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Gong H, Cao Y, Zeng W, Sun C, Wang Y, Su J, Ren H, Wang P, Zhou L, Kai G, Qian J. Manganese dioxide decorated kiwi peel powder for efficient removal of lead from aqueous solutions, blood and Traditional Chinese Medicine extracts. Environ Res 2024; 249:118360. [PMID: 38325779 DOI: 10.1016/j.envres.2024.118360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/02/2023] [Accepted: 12/26/2023] [Indexed: 02/09/2024]
Abstract
For human health and environment safety, it is of great significance to develop novel materials with high effectiveness for removal of lead from not only aqueous solutions but also human body and traditional Chinese medicines. Here, functional kiwi peel composite, manganese dioxide decorated kiwi peel powder (MKPP), is proposed for the removal of Pb2+ effectively. The adsorption of Pb2+ in aqueous solution is a highly selective and endothermic process and kinetically follows a pseudo-second-order model, which can reach equilibrium with the capacity of 192.7 mg/g within 10 min. Comprehensive factors of hydration energy, charge-to-radius ratio and softness of Pb2+ make a stronger affinity between MKPP and Pb2+. The possible adsorption mechanism involves covalent bond, electrostatic force and chelation, etc. MKPP can be efficiently regenerated and reused with high adsorption efficiency after five cycles. Besides, MKPP can remove over 97% of Pb2+ from real water samples. MKPP can also alleviate lead poisoning to a certain extent and make the Pb level of TCM extract meet the safety standard. This work highlights that MKPP is a promising adsorbent for the removal of Pb2+ and provides an efficient strategy for reusing kiwi peel as well as dealing with the problem of Pb pollution.
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Affiliation(s)
- Hangxin Gong
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Yiyao Cao
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China.
| | - Weihuan Zeng
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Chen Sun
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Yue Wang
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Jiajia Su
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Hong Ren
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China.
| | - Peng Wang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China.
| | - Lei Zhou
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310009, China.
| | - Guoyin Kai
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
| | - Jun Qian
- Zhejiang Provincial TCM Key Laboratory of Chinese Medicine Resource Innovation and Transformation, Zhejiang Provincial International S&T Cooperation Base for Active Ingredients of Medicinal and Edible Plants and Health, School of Pharmaceutical Sciences, Jinhua Academy, Zhejiang Chinese Medical University, Hangzhou 311402, China.
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2
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Tan R, Li K, Sun Y, Fan X, Shen Z, Tang L. Sustainable management of campus fallen leaves through low-temperature pyrolysis and application in Pb immobilization. J Environ Sci (China) 2024; 139:281-292. [PMID: 38105055 DOI: 10.1016/j.jes.2023.05.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/30/2023] [Accepted: 05/30/2023] [Indexed: 12/19/2023]
Abstract
Realizing campus sustainability requires the environmental-friendly and economical treatment of tremendous fallen leaves. Producing fallen leaf biochar at a low temperature is a candidate approach. In this study, six common types of fallen leaves on the campus were pyrolyzed at 300 °C. The obtained biochars were characterized and the adsorption mechanisms of lead (Pb) by the fallen leaf biochars were investigated. The adsorption capacity of leaf biochar for Pb was relatively high, up to 209 mg/g (Yulania denudata leaf biochar). Adsorption of Pb onto active sites was the rate-limiting step for most leaf biochars. But for Platanus leaf biochar, intraparticle diffusion of Pb2+ dominated owing to the lowest adsorption capacity. However, the highest exchangeable Pb fraction (27%) indicated its potential for removing aqueous Pb2+. Ginkgo and Prunus cerasifera leaf biochar immobilized Pb by surface complexation and precipitation as lead oxalate. Hence, they were suitable for soil heavy metal remediation. This study shed the light on the sustainable utilization of campus fallen leaves and the application of fallen leaf biochars in heavy metal remediation.
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Affiliation(s)
- Rongli Tan
- School of Environment, Nanjing University, Nanjing 210023, China
| | - Ke Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yue Sun
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiaoliang Fan
- School of Earth and Engineering Sciences, Nanjing University, Nanjing 210023, China
| | - Zhengtao Shen
- School of Earth and Engineering Sciences, Nanjing University, Nanjing 210023, China.
| | - Lingyi Tang
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton T6G 2E3, Canada.
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3
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Rostami M, Jahed-Khaniki G, Molaee-Aghaee E, Shariatifar N, Sani MA, Azami M, Rezvantalab S, Ramezani S, Ghorbani M. Polycaprolactone/polyacrylic acid/graphene oxide composite nanofibers as a highly efficient sorbent to remove lead toxic metal from drinking water and apple juice. Sci Rep 2024; 14:4372. [PMID: 38388664 PMCID: PMC10884409 DOI: 10.1038/s41598-024-54969-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/19/2024] [Indexed: 02/24/2024] Open
Abstract
Due to the characteristics of electrospun nanofibers (NFs), they are considered a suitable substrate for the adsorption and removal of heavy metals. Electrospun nanofibers are prepared based on optimized polycaprolactone (PCL, 12 wt%) and polyacrylic acid (PAA, 1 wt%) polymers loaded with graphene oxide nanoparticles (GO NPs, 1 wt%). The morphological, molecular interactions, crystallinity, thermal, hydrophobicity, and biocompatibility properties of NFs are characterized by spectroscopy (scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, Thermogravimetric analysis), contact angle, and MTT tests. Finally, the adsorption efficacy of NFs to remove lead (Pb2+) from water and apple juice samples was determined using inductively coupled plasma optical emission spectroscopy (ICP-OES). The average diameter for PCL, PCL/PAA, and PCL/PAA/GO NFs was 137, 500, and 216 nm, respectively. Additionally, the contact angle for PCL, PCL/PAA, and PCL/PAA/GO NFs was obtained at 74.32º, 91.98º, and 94.59º, respectively. The cytotoxicity test has shown non-toxicity for fabricated NFs against the HUVEC endothelial cell line by more than 80% survival during 72 h. Under optimum conditions including pH (= 6), temperature (25 °C), Pb concentration (25 to 50 mg/L), and time (15 to 30 min), the adsorption efficiency was generally between 80 and 97%. The adsorption isotherm model of PCL/PAA/GO NFs in the adsorption of lead metal follows the Langmuir model, and the reaction kinetics follow the pseudo-second-order. PCL/PA/GO NFs have shown adsorption of over 80% in four consecutive cycles. The adsorption efficacy of NFs to remove Pb in apple juice has reached 76%. It is appropriate and useful to use these nanofibers as a high-efficiency adsorbent in water and food systems based on an analysis of their adsorption properties and how well they work.
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Affiliation(s)
- Mohammadreza Rostami
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Food Science and Nutrition Group (FSAN), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Gholamreza Jahed-Khaniki
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
| | - Ebrahim Molaee-Aghaee
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.
- Food Science and Nutrition Group (FSAN), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
| | - Nabi Shariatifar
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmood Alizadeh Sani
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmood Azami
- Department of Tissue Engineering, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sima Rezvantalab
- Department of Chemical Engineering, Urmia University of Technology, 57166-419, Urmia, Iran
| | - Soghra Ramezani
- Faculty of Textile Engineering, Urmia University of Technology, 5716693188, Urmia, Iran
| | - Marjan Ghorbani
- Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Jiang J, Li R, Yang K, Li Y, Deng L, Che D. Investigation on Pb 2+ adsorption characteristics by AAEMs-rich biochar in aqueous solution: Performance and mechanism. Environ Res 2023; 236:116731. [PMID: 37517492 DOI: 10.1016/j.envres.2023.116731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/14/2023] [Accepted: 07/23/2023] [Indexed: 08/01/2023]
Abstract
Biochar derived from soybean straw with AAEMs (alkali and alkaline earth metals) enrichment could efficiently remove heavy metals from contaminated water. In this study, the influences of pyrolysis temperature on the physicochemical property and adsorption performance of soybean straw biochar were investigated. The contributions of different adsorption mechanisms were analyzed quantitatively. The results show that the soybean straw biochar exhibits excellent Pb2+ adsorption performance (157.2-227.2 mg g-1), with an order of BC800 > BC400 > BC600 > BC700 > BC500. The mechanisms of metal ion exchange (37.49%-72.58%) and precipitation with minerals (22.38%-58.03%) mainly control the Pb2+ adsorption, whereas complexation with organic functional groups (OFGs) and cation-Cπ interaction make the less contribution. The order of cation exchange capacity (CEC) is BC400 > BC800 > BC700 > BC600 > BC500, showing a high correlation (0.965) with the contribution of metal ion exchange with AAEMs. Moreover, Ca exhibits the strongest exchange capacity. The contribution of precipitation is consistent with the variation of soluble CO32- content in biochar. These results suggest that soybean straw biochar rich in AAEMs is a prospective adsorbent for Pb2+ elimination.
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Affiliation(s)
- Jiahao Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China.
| | - Ruiyu Li
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Shunde Institue of Inspection, Guangdong Institue of Special Equipment Inspection and Research, Foshan, 528300, China.
| | - Kaixuan Yang
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Shanghai Power Equipment Research Institute Co.,Ltd., Shanghai, 200240, China.
| | - Yuhang Li
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China; Xi'an Thermal Power Research Institue Co., Ltd., Xi'an, 710032, China.
| | - Lei Deng
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China.
| | - Defu Che
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'a, 710049, China
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Kamali M, Ebrahimi A, Vatanpour V. New dithiocarbamate-based polymer (DTCP) as an additive to improve microporous polysulfone membrane efficiency in lead and dye removal. J Environ Manage 2023; 339:117925. [PMID: 37060696 DOI: 10.1016/j.jenvman.2023.117925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 04/06/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
For fabricating a membrane with hydrophilic and complexing agent groups, a new dithiocarbamate-based polymer (DTCP) containing dithiocarbamate, thioamide, and ethereal oxygen groups was synthesized and blended in polysulfone (PSF) matrix with 1, 2, 5, and 10 wt% proportion. The membranes were produced by the nonsolvent induced phase separation method. For DTCP characterization, NMR, FTIR, TGA and GPC techniques were used. SEM images show that no morphological change can be seen even in 10 wt% blended membranes. AFM surface images show that the roughness of 5 and 10 wt% membranes extremely increased. The performance of the DTCP/PSF membranes were investigated in the separation of lead ions and Reactive Yellow 39 dye from the contaminated water. The outcomes indicated that by increasing the amount of DTCP up to 10 wt%, the pure water flux, bovine serum albumin flux, and the lead removal increased very efficiently compared to the bare one. Blending of more than 1 wt% DTCP, cause to removal of 99.6% lead ions. The water contact angle decreased by the adding of DTCP, caused to increase fouling resistance. The results of this research shows that the synthesized DTCP can be used as a good additive for improving membrane permeability, anti-fouling and especially heavy metal removal efficiency.
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Affiliation(s)
- Mahmood Kamali
- Department of Organic Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran.
| | - Asadollah Ebrahimi
- Department of Organic Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran
| | - Vahid Vatanpour
- Department of Applied Chemistry, Faculty of Chemistry, Kharazmi University, 15719-14911, Tehran, Iran; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, Turkey
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Arabia G, Mitacchione G, Cersosimo A, Calvi E, Salghetti F, Bontempi L, Giacopelli D, Cerini M, Curnis A. Long-term outcomes following transvenous lead extraction: Data from a tertiary referral center. Int J Cardiol 2023; 378:32-38. [PMID: 36841289 DOI: 10.1016/j.ijcard.2023.02.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 02/16/2023] [Accepted: 02/22/2023] [Indexed: 02/27/2023]
Abstract
BACKGROUND Transvenous lead extraction (TLE) has shown a safe and efficacy profile in the intraoperative and short-term setting; however, data on long-term outcomes are limited. OBJECTIVE The purpose of this study was to assess long-term outcomes and prognostic factors in patients who underwent TLE. METHODS Consecutive patients with cardiac implantable electronic device (CIED) who underwent TLE between 2014 and 2016 were retrospectively studied. The primary outcome was the composite endpoint of death and repeated TLE stratified by infective/non-infective indication. Individual components of the primary outcome were also evaluated. RESULTS One hundred ninety-one patients were included in the analysis, 50% extracted for CIED-related infection. Complete procedural success was achieved in 189 patients (99%) with no major acute complications. After a median of 6.5 years, infection indication was associated with significantly lower event-free survival (67% vs. 83% non-infection group, adjusted hazard ratio [aHR] 1.97, 95% confidence interval [CI] 1.02-3.81, p = 0.04). All-cause mortality rate was higher in the TLE infection group (30% vs. 10%, p < 0.01). The rate of repeated TLE did not differ between groups (4% vs. 7%, p = 0.62). Among patients who had TLE for infection, the presence of vegetation (aHR 2.56; 95%CI 1.17-5.63, p = 0.02) and positive blood cultures (aHR 2.64; 95%CI 1.04-6.70, p = 0.04) were independently associated with the primary outcome. CONCLUSION Patients who underwent TLE for CIED-related infection exhibit a high mortality risk during long-term follow-up. Vegetation and positive blood cultures in patients with CIED-related infection are associated with a worse prognosis regardless of successful and uncomplicated TLE.
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Affiliation(s)
- Gianmarco Arabia
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy.
| | | | - Angelica Cersosimo
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
| | - Emiliano Calvi
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
| | - Francesca Salghetti
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
| | - Luca Bontempi
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
| | - Daniele Giacopelli
- Clinical Unit, Biotronik Italia, Cologno Monzese (MI), Italy; Department of Cardiac, Thoracic, Vascular Sciences & Public Health, University of Padova, Italy
| | - Manuel Cerini
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
| | - Antonio Curnis
- Cardiology Department, Spedali Civili Hospital, University of Brescia, Italy
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Esmaeili Bidhendi M, Parandi E, Mahmoudi Meymand M, Sereshti H, Rashidi Nodeh H, Joo SW, Vasseghian Y, Mahmoudi Khatir N, Rezania S. Removal of lead ions from wastewater using magnesium sulfide nanoparticles caged alginate microbeads. Environ Res 2023; 216:114416. [PMID: 36181897 DOI: 10.1016/j.envres.2022.114416] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/24/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
In this study, an adsorbent made of alginate (Alg) caged magnesium sulfide nanoparticles (MgS) microbeads were used to treat lead ions (Pb2+ ions). The MgS nanoparticles were synthesized at low temperatures, and Alg@MgS hydrogel microbeads were made by the ion exchange process of the composite materials. The newly fabricated Alg@MgS was characterized by XRD, SEM, and FT-IR. The adsorption conditions were optimized for the maximum removal of Pb2+ ions by adjusting several physicochemical parameters, including pH, initial concentration of lead ions, Alg/MgS dosage, reaction temperature, equilibration time, and the presence of co-ions. This is accomplished by removing the maximum amount of Pb2+ ions. Moreover, the adsorbent utilized more than six times with a substantial amount (not less than 60%) of Pb2+ ions was eliminated. Considering the ability of sodium alginate (SA) for excellent metal chelation and controlled nanosized pore structure, the adsorption equilibrium of Alg@MgS can be reached in 60 min, and the highest adsorption capacity for Pb2+ was 84.7 mg/g. The sorption mechanism was explored by employing several isotherms. It was found that the Freundlich model fits the adsorption process quite accurately. The pseudo-second-order model adequately described the adsorption kinetics.
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Affiliation(s)
- Mehdi Esmaeili Bidhendi
- Department of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, Iran
| | - Ehsan Parandi
- Department of Food Science & Technology, Faculty of Agricultural Engineering and Technology, University of Tehran, Karaj, Iran; Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj, Iran
| | - Masoumeh Mahmoudi Meymand
- Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj, Iran
| | - Hassan Sereshti
- Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran.
| | - Hamid Rashidi Nodeh
- Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj, Iran
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea
| | - Yasser Vasseghian
- Department of Chemistry, Soongsil University, Seoul, 06978, South Korea; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - Nadia Mahmoudi Khatir
- Department of Biotechnology, Faculty of Biological Sciences, Alzahra University, Tehran, Iran
| | - Shahabaldin Rezania
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
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Gul Zaman H, Baloo L, Kutty SR, Aziz K, Altaf M, Ashraf A, Aziz F. Insight into microwave-assisted synthesis of the chitosan-MOF composite: Pb(II) adsorption. Environ Sci Pollut Res Int 2023; 30:6216-6233. [PMID: 35989404 DOI: 10.1007/s11356-022-22438-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
Heavy metal contamination has increased over the globe, causing significant environmental issues owing to direct and indirect releases into water bodies. As a result, metal removal from water entities must be addressed soon. Various adsorbents such as MOFs and chitosan have demonstrated promising results in water treatment. The present study prepared a composite material (chitosan-UiO-66-glycidyl methacrylate MOF) by a microwave-assisted method. The structure and morphology of the chitosan-MOF composite were studied using FE-SEM, EDX, XRD, BET, FT-IR, and TGA techniques. In addition, the adsorption of Pb(II) from aqueous solution onto the chitosan-MOF composite was analyzed in a batch study concerning pH, contact time, initial metal ion concentration, and adsorbent dosage. The composite has a large surface area of 867 m2/g with a total pore volume of 0.51 cm3/g and thermal stability of up to 400 [Formula: see text]. Following an analysis of the adsorption isotherms, kinetics, and thermodynamics, the Langmuir model showed an excellent fit with the adsorption data (R2 = 0.99) and chi-squared (X2 = 3.609). The adsorption process was a spontaneous exothermic reaction and the pseudo-second-order rate equation fitted the kinetic profile well. Moreover, the composite is recyclable, retaining 83.45% of its removal effectiveness after 5 consecutive cycles, demonstrating it as a sustainable adsorbent for metal recovery. This study introduces a novel synthesized composite with enhanced recyclability and a higher potential for eliminating pollutants from industrial wastewater.
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Affiliation(s)
- Humaira Gul Zaman
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Lavania Baloo
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia.
| | - Shamsul Rahman Kutty
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Khalid Aziz
- Laboratory of Biotechnology, Materials, and Environment, Faculty of Sciences, Ibn Zohr University, Agadir, Morocco
| | - Muhammad Altaf
- Civil and Environmental Engineering Department, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak, Malaysia
| | - Aniqa Ashraf
- CAS Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, People's Republic of China
| | - Faissal Aziz
- Laboratory of Water, Biodiversity and Climate Change, Faculty of Science Semlalia of Marrakech, Cadi Ayyad University, Marrakech, Morocco
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9
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Zhang X, Zhang X, Li X, Liu Y, Yu H, Ma M. Porous geopolymer with controllable interconnected pores-a viable permeable reactive barrier filler for lead pollutant removal. Chemosphere 2022; 307:136128. [PMID: 35995199 DOI: 10.1016/j.chemosphere.2022.136128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 08/04/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
Most of the commonly used traditional permeable reactive barrier (PRB) fillers have many drawbacks, such as poor retention of hydraulic conductivity, high cost, and a complex preparation process. Porous geopolymers (PGPs) with controllable pore structures could circumvent these drawbacks owing to their high adsorption capacity, cost-effective synthesis, and good chemical stability. In this study, based on our previous research, the "foaming-liquid film" balance control method was proposed and used to fabricate three PGPs with gradient pore connectivity. The influence of pore structure on the Pb2+ removal performance and migration mechanism were investigated by conducting both batch and column experiments. Closed, dead-end, capillary, and interconnected pores exist in the PGPs, and results indicated that interconnected pores effectively promote the migration of solute in the main flow channels to the deeper matrix, thereby enhancing the long-term dynamic removal efficiency. At breakthrough, the Pb2+ uptake of PGP-3 reached 146 mg g-1. Further, the proposed "foaming-liquid film" balance control method is effective to prepare PGPs with controllable connectivity, and the PGP-PRBs with a high proportion of interconnected pores exhibit excellent performance for the removal of heavy metals, which is advantageous for their future applications in groundwater decontamination.
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Affiliation(s)
- Xuhao Zhang
- Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, China; Institute of Geothermal Development, Shandong University, Weifang, 261200, China
| | - Xiao Zhang
- Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, China; Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, China; Institute of Geothermal Development, Shandong University, Weifang, 261200, China.
| | - Xianghui Li
- Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, China; Institute of Geothermal Development, Shandong University, Weifang, 261200, China
| | - Yanshun Liu
- Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, China; Institute of Geothermal Development, Shandong University, Weifang, 261200, China
| | - Hao Yu
- Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, China; Institute of Geothermal Development, Shandong University, Weifang, 261200, China
| | - Minghui Ma
- Institute of Geothermal Development, Shandong University, Weifang, 261200, China
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10
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Mosleh N, Joolaei Ahranjani P, Parandi E, Rashidi Nodeh H, Nawrot N, Rezania S, Sathishkumar P. Titanium lanthanum three oxides decorated magnetic graphene oxide for adsorption of lead ions from aqueous media. Environ Res 2022; 214:113831. [PMID: 35841973 DOI: 10.1016/j.envres.2022.113831] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/29/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
The current study presents a viable and straightforward method for synthesizing titanium lanthanum three oxide nanoparticles (TiLa) and their decoration onto the ferrous graphene oxide sheets to produce FeGO-TiLa as efficient magnetic adsorbent. Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and vibration sample magnetometer (VSM) were used to evaluate the physical and chemical properties of the produced nanocomposites. The FeGO-TiLa was used to enhance the removal of lead ions from aqueous solution. The FeGO-TiLa nanocomposite exhibited a much higher removal efficiency (93%) for lead ions than pure TiLa nanoparticles (81%) and magnetic graphene oxide (74%). The influence of FeGO-TiLa dosage, contact time, solution pH, solution temperature, and starting quantity on the lead ions was evaluated and adjusted. The investigations demonstrated that a pH 6 with 40 mg adsorbent resulted in >91% removal of lead ions at ambient temperature after 120 min. Isotherm models were used to analyze experimental results, and Langmuir model fitted the data well as compared Freundlich model with a maximum adsorption capacity of 109.89 mg g-1. Kinetic and studies are performed the lead adsorption over FeGO-TiLa follow pseudo-second-order rate. Langmuir and Free energy suggested the lead ions uptake with FeGO-TiLa was monolayer and physical adsorption mechnaism, respectively. Finally, the FeGO-TiLa nanocompoiste can be used as an alternative adsorbent for water remediation.
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Affiliation(s)
- Nazanin Mosleh
- Department of Food Science & Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Parham Joolaei Ahranjani
- Department of Microbial and Molecular Systems, Faculty of Bioscience Engineering, KU Leuven, Kasteelpark Arenberg 20, Box 2300, 13, B3001, Leuven, Belgium
| | - Ehsan Parandi
- Department of Food Science & Technology, Faculty of Agricultural Engineering and Technology, University of Tehran, Karaj, Iran; Food Technology and Agricultural Products Research Centre, Standard Research Institute (SRI), Karaj, Iran
| | - Hamid Rashidi Nodeh
- Food Technology and Agricultural Products Research Centre, Standard Research Institute (SRI), Karaj, Iran
| | - Nicole Nawrot
- Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - Shahabaldin Rezania
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
| | - Palanivel Sathishkumar
- Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600 077, India.
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11
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Kypritidou Z, El-Bassi L, Jellali S, Kinigopoulou V, Tziritis E, Akrout H, Jeguirim M, Doulgeris C. Lead removal from aqueous solutions by olive mill wastes derived biochar: Batch experiments and geochemical modelling. J Environ Manage 2022; 318:115562. [PMID: 35764000 DOI: 10.1016/j.jenvman.2022.115562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 05/14/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
In this study, lead removal from aqueous solutions using biochar derived from olive mill solid and liquid wastes has been investigated by applying batch experiments and geochemical modelling. The batch adsorption experiments included the assessment of several key parameters such as the contact time (kinetic), initial concentration (isotherm), pH, adsorbent dose, and the presence of competitive cations, whilst the geochemical modelling focused on the involved adsorption mechanisms using the PHREEQC code. The kinetic studies showed that lead adsorption is a relatively fast process, where intraparticle diffusion is the rate-limiting step. Biochar dose, solution pH and the presence of competitive ions significantly affected the Pb adsorption effectiveness by the biochar. Especially the higher Pb removal percentages were observed in mono-elemental solutions with high biochar dose at mildly acidic solution pH values. The maximum Pb adsorption capacity of biochar was estimated as 40.8 mg g-1 which is higher than various biochars derived from sludge, lignocellulosic and animal biomasses. On the other hand, the geochemical modelling employing the PHREEQC code showed that ion exchange and Pb precipitation are the main reactions controlling its removal from aqueous solutions, whilst surface complexation is insignificant, mainly due to the low surface functional groups on the used biochar.
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Affiliation(s)
- Zacharenia Kypritidou
- Dept. of Economic Geology and Geochemistry, Faculty of Geology and Geo-environment, National & Kapodistrian University of Athens, 15784, Athens, Greece
| | - Leila El-Bassi
- Wastewaters and Environment Laboratory, Water Research and Technologies Center (CERTE), Technopark Borj Cedria, University of Carthage, P.O.Box 273, Soliman, 8020, Tunisia
| | - Salah Jellali
- Center for Environmental Studies and Research, Sultan Qaboos University, Al-Khoud 123, Muscat, Oman
| | - Vasiliki Kinigopoulou
- Soil and Water Resources Institute (SWRI), Hellenic Agricultural Organisation, 574 00, Sindos, Greece
| | - Evangelos Tziritis
- Soil and Water Resources Institute (SWRI), Hellenic Agricultural Organisation, 574 00, Sindos, Greece
| | - Hanene Akrout
- Wastewaters and Environment Laboratory, Water Research and Technologies Center (CERTE), Technopark Borj Cedria, University of Carthage, P.O.Box 273, Soliman, 8020, Tunisia
| | - Mejdi Jeguirim
- Université de Haute-Alsace, CNRS, Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361, F-68100, Mulhouse, France
| | - Charalampos Doulgeris
- Soil and Water Resources Institute (SWRI), Hellenic Agricultural Organisation, 574 00, Sindos, Greece.
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12
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Tungala LS, Mekala S, Pala SL, Biftu WK, Ravindhranath K. Stem powder and its active carbon of Arachis hypogaea plant for lead (II) removal: application to treat battery-based industrial effluents. Int J Phytoremediation 2022; 25:598-608. [PMID: 35815696 DOI: 10.1080/15226514.2022.2095975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Stem powder and its active carbon of Arachis hypogaea plant are identified to have strong adsorptivity for lead ions. The bio-sorbents are characterized by conventional methods including XRD and FTIR analysis. These biomaterials are investigated for their maximum adsorption for lead ions by optimizing the extraction conditions. The maximum removal is observed in the pH range of 6-7 for both sorbents. With stem powders, the removal is 76.0% from a simulated lead solution of concentration: 20.0 mg/L with 1.5 g/L of the sorbent and at an equilibration time of 2.0 h. With the active carbon, the maximum extraction of: 86.0% is observed at pH: 6.5 with 1.0 g/L of the sorbent after an equilibration time of 1.5 h. The sorption capacities are 32.0 mg/g for stem powders, and 40.5 mg/g for active carbon. Many co-ions have marginal interference. Spent adsorbents can be recycled after regeneration. Thermodynamic investigations reveal the spontaneity and endothermic nature of adsorption. High ΔH values viz., 26.45 kJ/mole for AHSP and 46.40 kJ/mole for AHSAC, confirm the bonding of Pb2+ ions with the sorbents is either "ion-exchange" and/or a sort of "complex formation." The disorder at the solid and liquid boundary is indicated by high positive ΔS values and it is a favorable condition for good Pb2+ adsorption. On analysis of different kinetic and isotherm models, the sorption of Pb2+ ions follows Pseudo-2nd order and Langmuir models. This confirms the mono-layer adsorption of Pb2+ ions on the humongous surface of the sorbent. The adsorbents are successfully applied to treat industrial effluent samples.
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Affiliation(s)
- Leela Srinivas Tungala
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, India
| | | | - Sneha Latha Pala
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, India
| | - Wondwosen Kebede Biftu
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, India
- Ethiopian Radiation Protection Authority, Addis Ababa, Ethiopia
| | - Kunta Ravindhranath
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Green Fields, Vaddeswaram, India
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13
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Tan ES, Lee JY, Boey E, Soh R, Sim MG, Yeo WT, Seow SC, Kojodjojo P. Use of extendable helix leads for conduction system pacing: differences in lead handling and performance: Conclusion. J Cardiovasc Electrophysiol 2022; 33:1550-1557. [PMID: 35524417 DOI: 10.1111/jce.15528] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/12/2022] [Accepted: 05/04/2022] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Pacing leads with extendable-retractable helix (EHL) are alternatives to fixed-helix leads (FHL) for conduction system pacing (CSP), but data on handling characteristics are limited. This study evaluated a dual-center experience of lead handling and performance during CSP. METHODS AND RESULTS Consecutive patients with His-bundle pacing (HBP) or left bundle branch pacing (LBBP) were evaluated for the primary outcome of lead failure, defined as structural damage to the lead necessitating lead replacement. Differences in pacing characteristics were compared. Among 280 patients (mean age 74±11 years, 44% male, 50% LBBP), 246 (88%) received FHL and 34 (12%) received EHL. Of 299 leads used, lead failure occurred more frequently among patients with EHL than FHL (29% vs 2%, p<0.001), regardless of CSP modality. Majority of damaged leads (89%) in the form of helix deformation were successfully removed, with failure occurring in only 2 patients, both EHL, leading to helix fracture and retention within the septal myocardium. EHL, compared to FHL, was associated with 25-fold increased odds of lead failure (odds ratio 25.21, 95% confidence interval 7.35-86.51), and persisted after adjustment in turn for age, pacing modality and indication. CSP implant success rates did not differ by lead design (FHL 80% vs EHL 71%, p=0.18), with similar pacing thresholds at implant and follow-up. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Eugene Sj Tan
- Department of Cardiology, National University Heart Centre, Singapore.,Yong Loo Lin School of Medicine, National University Singapore
| | - Jie-Ying Lee
- Department of Cardiology, National University Heart Centre, Singapore
| | - Elaine Boey
- Department of Cardiology, Ng Teng Fong General Hospital, Singapore
| | - Rodney Soh
- Department of Cardiology, National University Heart Centre, Singapore
| | - Ming Gin Sim
- Yong Loo Lin School of Medicine, National University Singapore
| | - Wee-Tiong Yeo
- Department of Cardiology, National University Heart Centre, Singapore.,Yong Loo Lin School of Medicine, National University Singapore
| | - Swee-Chong Seow
- Department of Cardiology, National University Heart Centre, Singapore.,Yong Loo Lin School of Medicine, National University Singapore
| | - Pipin Kojodjojo
- Department of Cardiology, National University Heart Centre, Singapore.,Yong Loo Lin School of Medicine, National University Singapore.,Department of Cardiology, Ng Teng Fong General Hospital, Singapore
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14
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Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Corcia MCG, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Ann Pediatr Cardiol 2022; 15:323-346. [PMID: 36589659 PMCID: PMC9802608 DOI: 10.4103/0974-2069.361245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California
| | - Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York
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15
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Giri DD, Alhazmi A, Mohammad A, Haque S, Srivastava N, Thakur VK, Gupta VK, Pal DB. Lead removal from synthetic wastewater by biosorbents prepared from seeds of Artocarpus Heterophyllus and Syzygium Cumini. Chemosphere 2022; 287:132016. [PMID: 34523437 DOI: 10.1016/j.chemosphere.2021.132016] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/18/2021] [Accepted: 08/23/2021] [Indexed: 06/13/2023]
Abstract
The present investigation deals with removal of lead (Pb+2) ions from waste water using biosorbent prepared from seeds of Artocarpus heterophyllus (SBAh) and Syzygium cumini (SBSc). Biosorbents surface has been characterized through FT-IR spectroscopy to probe the presence of functional groups. Response surface methodology enabled optimized conditions (Pb+2 concentration 2 μg/mL, pH 5.8 and bioadsorbent dose 60 mg) resulted in Pb+2 removal ~96% for SBAh and ~93% for SBSc at agitation speed 300 rpm. The adsorption capacity has been found to be 4.93 mg/g for SBAh and 3.95 mg/g for SBSc after 70 min. At optimal experimental conditions, kinetics of biosorption was explained well by inter-particle diffusion model for SBAh (R2 = 0.99) whereas Elovich model best fitted for SBSc (R2 = 0.98). Further, both the biosorbents followed Temkin adsorption isotherm model.
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Affiliation(s)
- Deen Dayal Giri
- Department of Botany, Maharaj Singh College, Saharanpur, Uttar Pradesh, 247001, India
| | - Alaa Alhazmi
- Medical Laboratory Technology Department Jazan University, Jazan, Saudi Arabia; SMIRES for Consultation in Specialized Medical Laboratories, Jazan University, Jazan, Saudi Arabia
| | - Akbar Mohammad
- School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk, 38541, South Korea
| | - Shafiul Haque
- Research and Scientific Studies Unit, College of Nursing and Allied Health Sciences, Jazan University, Jazan, 45142, Saudi Arabia; Bursa Uludağ University Faculty of Medicine, Görükle Campus, 16059, Nilüfer, Bursa, Turkey
| | - Neha Srivastava
- Department of Chemical Engineering, Indian Institute of Technology (BHU) Varanasi, Uttar Pradesh, 221005, India
| | - Vijay Kumar Thakur
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK; School of Engineering, University of Petroleum & Energy Studies (UPES), Dehradun, Uttarakhand, India
| | - Vijai Kumar Gupta
- Biorefining and Advanced Materials Research Center, Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh EH9 3JG, UK; Center for Safe and Improved Food, Scotland's Rural College (SRUC), Kings Buildings, West Mains Road, Edinburgh, EH9 3JG, UK.
| | - Dan Bahadur Pal
- Department of Chemical Engineering, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India.
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16
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Shah MJ, Silka MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Bergen NHV, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Developed in collaboration with and endorsed by the Heart Rhythm Society (HRS), the American College of Cardiology (ACC), the American Heart Association (AHA), and the Association for European Paediatric and Congenital Cardiology (AEPC) Endorsed by the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). JACC Clin Electrophysiol 2021; 7:1437-1472. [PMID: 34794667 DOI: 10.1016/j.jacep.2021.07.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In view of the increasing complexity of both cardiovascular implantable electronic devices (CIEDs) and patients in the current era, practice guidelines, by necessity, have become increasingly specific. This document is an expert consensus statement that has been developed to update and further delineate indications and management of CIEDs in pediatric patients, defined as ≤21 years of age, and is intended to focus primarily on the indications for CIEDs in the setting of specific disease categories. The document also highlights variations between previously published adult and pediatric CIED recommendations and provides rationale for underlying important differences. The document addresses some of the deterrents to CIED access in low- and middle-income countries and strategies to circumvent them. The document sections were divided up and drafted by the writing committee members according to their expertise. The recommendations represent the consensus opinion of the entire writing committee, graded by class of recommendation and level of evidence. Several questions addressed in this document either do not lend themselves to clinical trials or are rare disease entities, and in these instances recommendations are based on consensus expert opinion. Furthermore, specific recommendations, even when supported by substantial data, do not replace the need for clinical judgment and patient-specific decision-making. The recommendations were opened for public comment to Pediatric and Congenital Electrophysiology Society (PACES) members and underwent external review by the scientific and clinical document committee of the Heart Rhythm Society (HRS), the science advisory and coordinating committee of the American Heart Association (AHA), the American College of Cardiology (ACC), and the Association for European Paediatric and Congenital Cardiology (AEPC). The document received endorsement by all the collaborators and the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). This document is expected to provide support for clinicians and patients to allow for appropriate CIED use, appropriate CIED management, and appropriate CIED follow-up in pediatric patients.
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Affiliation(s)
- Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.
| | - Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California, USA.
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York, USA
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri, USA
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois, USA
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan, USA
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah, USA
| | - Melissa Olen
- Nicklaus Children's Hospital, Miami, Florida, USA
| | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York, USA
| | | | - Nicholas H Von Bergen
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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17
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Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Heart Rhythm 2021; 18:1925-1950. [PMID: 34363987 DOI: 10.1016/j.hrthm.2021.07.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California.
| | - Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
| | | | | | | | - Monica N Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York University Grossman School of Medicine, New York, New York
| | | | - Aarti S Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter P Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | | | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary C Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, United Kingdom
| | | | | | | | - Reina B Tan
- New York University Langone Health, New York, New York
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18
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Silka MJ, Shah MJ, Silva JNA, Balaji S, Beach CM, Benjamin MN, Berul CI, Cannon B, Cecchin F, Cohen MI, Dalal AS, Dechert BE, Foster A, Gebauer R, Gonzalez Corcia MC, Kannakeril PJ, Karpawich PP, Kim JJ, Krishna MR, Kubuš P, LaPage MJ, Mah DY, Malloy-Walton L, Miyazaki A, Motonaga KS, Niu MC, Olen M, Paul T, Rosenthal E, Saarel EV, Silvetti MS, Stephenson EA, Tan RB, Triedman J, Von Bergen NH, Wackel PL; Document Reviewers: Philip M. Chang, Fabrizio Drago, Anne M. Dubin, Susan P. Etheridge, Apichai Kongpatanayothin, Jose Manuel Moltedo, Ashish A. Nabar and George F. Van Hare. 2021 PACES expert consensus statement on the indications and management of cardiovascular implantable electronic devices in pediatric patients: executive summary. Cardiol Young 2021; 31:1717-37. [PMID: 34796795 DOI: 10.1017/S1047951121003395] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Rusmin R, Sarkar B, Mukhopadhyay R, Tsuzuki T, Liu Y, Naidu R. Facile one pot preparation of magnetic chitosan-palygorskite nanocomposite for efficient removal of lead from water. J Colloid Interface Sci 2021; 608:575-587. [PMID: 34628317 DOI: 10.1016/j.jcis.2021.09.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/31/2021] [Accepted: 09/19/2021] [Indexed: 12/16/2022]
Abstract
Development of polymeric magnetic adsorbents is a promising approach to obtain efficient treatment of contaminated water. However, the synthesis of magnetic composites involving multiple components frequently involves tedious preparation steps. In the present study, a magnetic chitosan-palygorskite (MCP) nanocomposite was prepared through a straight-forward one pot synthesis approach to evaluate its lead (Pb2+) removal capacity from aqueous solution. The nano-architectural and physicochemical properties of the newly-developed MCP composite were described via micro- and nano-morphological analyses, and crystallinity, surface porosity and magnetic susceptibility measurements. The MCP nanocomposite was capable to remove up to 58.5 mg Pb2+ g-1 of MCP from water with a good agreement of experimental data to the Langmuir isotherm model (R2 = 0.98). The Pb2+ adsorption process on MCP was a multistep diffusion-controlled phenomenon evidenced by the well-fitting of kinetic adsorption data to the intra-particle diffusion model (R2 = 0.96). Thermodynamic analysis suggested that the adsorption process at low Pb2+ concentration was controlled by chemisorption, whereas that at high Pb2+ concentration was dominated by physical adsorption. X-ray photoelectron and Fourier transform infrared spectroscopy results suggested that the Pb adsorption on MCP was governed by surface complexation and chemical reduction mechanisms. During regeneration, the MCP retained 82% Pb2+ adsorption capacity following four adsorption-desorption cycles with ease to recover the adsorbent using its strong magnetic property. These findings highlight the enhanced structural properties of the easily-prepared nanocomposite which holds outstanding potential to be used as an inexpensive and green adsorbent for remediating Pb2+ contaminated water.
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Affiliation(s)
- Ruhaida Rusmin
- Faculty of Applied Sciences, Universiti Teknologi MARA, Negeri Sembilan Branch, Kuala Pilah Campus, Kuala Pilah, Negeri Sembilan 72000, Malaysia; Future Industries Institute, University of South Australia, Mawson Lakes, SA 5095, Australia.
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK.
| | - Raj Mukhopadhyay
- Division of Irrigation and Drainage Engineering, ICAR-Central Soil Salinity Research Institute, Karnal 132001, Haryana, India
| | - Takuya Tsuzuki
- Research School of Engineering, College of Engineering and Computer Science, Australian National University, Acton, ACT 2601, Australia
| | - Yanju Liu
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, ATC Building, Callaghan, NSW 2308, Australia
| | - Ravi Naidu
- Global Centre for Environmental Remediation, The University of Newcastle, Callaghan, NSW 2308, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of the Environment, ATC Building, Callaghan, NSW 2308, Australia
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Narayana PL, Maurya AK, Wang XS, Harsha MR, Srikanth O, Alnuaim AA, Hatamleh WA, Hatamleh AA, Cho KK, Paturi UMR, Reddy NS. Artificial neural networks modeling for lead removal from aqueous solutions using iron oxide nanocomposites from bio-waste mass. Environ Res 2021; 199:111370. [PMID: 34043971 DOI: 10.1016/j.envres.2021.111370] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 06/12/2023]
Abstract
Heavy metal ions in aqueous solutions are taken into account as one of the most harmful environmental issues that ominously affect human health. Pb(II) is a common pollutant among heavy metals found in industrial wastewater, and various methods were developed to remove the Pb(II). The adsorption method was more efficient, cheap, and eco-friendly to remove the Pb(II) from aqueous solutions. The removal efficiency depends on the process parameters (initial concentration, the adsorbent dosage of T-Fe3O4 nanocomposites, residence time, and adsorbent pH). The relationship between the process parameters and output is non-linear and complex. The purpose of the present study is to develop an artificial neural networks (ANN) model to estimate and analyze the relationship between Pb(II) removal and adsorption process parameters. The model was trained with the backpropagation algorithm. The model was validated with the unseen datasets. The correlation coefficient adj.R2 values for total datasets is 0.991. The relationship between the parameters and Pb(II) removal was analyzed by sensitivity analysis and creating a virtual adsorption process. The study determined that the ANN modeling was a reliable tool for predicting and optimizing adsorption process parameters for maximum lead removal from aqueous solutions.
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Affiliation(s)
- P L Narayana
- School of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University, Jinju, Republic of Korea
| | - A K Maurya
- School of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University, Jinju, Republic of Korea
| | - Xiao-Song Wang
- School of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University, Jinju, Republic of Korea
| | - M R Harsha
- Machine Learning and Artificial Intelligence, International Institute of Information Technology, Banglore, India
| | - O Srikanth
- Department of Mechanical Engineering, Dhanekula Institute of Engineering & Technology, Ganguru, Vijayawada, 521139, India
| | - Abeer Ali Alnuaim
- Department of Computer Science and Engineering, College of Applied Studies and Community Services, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Wesam Atef Hatamleh
- Department of Computer Science, College of Computer and Information Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ashraf Atef Hatamleh
- Department of Botany and Microbiology, College of science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - K K Cho
- Department of Materials Engineering and Convergence Technology & RIGET, Gyeongsang National University, Jinju, South Korea
| | | | - N S Reddy
- School of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University, Jinju, Republic of Korea.
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21
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Shah MJ, Silka MJ, Silva JA, Balaji S, Beach C, Benjamin M, Berul C, Cannon B, Cecchin F, Cohen M, Dalal A, Dechert B, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril P, Karpawich P, Kim J, Krishna MR, Kubuš P, Malloy-Walton L, LaPage M, Mah D, Miyazaki A, Motonaga K, Niu M, Olen M, Paul T, Rosenthal E, Saarel E, Silvetti MS, Stephenson E, Tan R, Triedman J, Von Bergen N, Wackel P. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients. Heart Rhythm 2021; 18:1888-1924. [PMID: 34363988 DOI: 10.1016/j.hrthm.2021.07.038] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 07/15/2021] [Indexed: 01/10/2023]
Abstract
In view of the increasing complexity of both cardiovascular implantable electronic devices (CIEDs) and patients in the current era, practice guidelines, by necessity, have become increasingly specific. This document is an expert consensus statement that has been developed to update and further delineate indications and management of CIEDs in pediatric patients, defined as ≤21 years of age, and is intended to focus primarily on the indications for CIEDs in the setting of specific disease categories. The document also highlights variations between previously published adult and pediatric CIED recommendations and provides rationale for underlying important differences. The document addresses some of the deterrents to CIED access in low- and middle-income countries and strategies to circumvent them. The document sections were divided up and drafted by the writing committee members according to their expertise. The recommendations represent the consensus opinion of the entire writing committee, graded by class of recommendation and level of evidence. Several questions addressed in this document either do not lend themselves to clinical trials or are rare disease entities, and in these instances recommendations are based on consenus expert opinion. Furthermore, specific recommendations, even when supported by substantial data, do not replace the need for clinical judgment and patient-specific decision-making. The recommendations were opened for public comment to Pediatric and Congenital Electrophysiology Society (PACES) members and underwent external review by the scientific and clinical document committee of the Heart Rhythm Society (HRS), the science advisory and coordinating committee of the American Heart Association (AHA), the American College of Cardiology, (ACC) and the Association for European Paediatric and Congenital Cardiology (AEPC). The document received endorsement by all the collaborators and the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). This document is expected to provide support for clinicians and patients to allow for appropriate CIED use, appropriate CIED management, and appropriate follow-up in pediatric patients.
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Affiliation(s)
- Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
| | - Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California.
| | | | | | - Cheyenne Beach
- Yale University School of Medicine, New Haven, Connecticut
| | - Monica Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York Univeristy Grossman School of Medicine, New York, New York
| | | | - Aarti Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | - Doug Mah
- Harvard Medical School, Boston, Massachussetts
| | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | | | | | | | - Reina Tan
- New York University Langone Health, New York, New York
| | - John Triedman
- University of Missouri-Kansas City School of Medicine, Kansas City, Missouri
| | - Nicholas Von Bergen
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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22
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Shah MJ, Silka MJ, Silva JA, Balaji S, Beach C, Benjamin M, Berul C, Cannon B, Cecchin F, Cohen M, Dalal A, Dechert B, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril P, Karpawich P, Kim J, Krishna MR, Kubuš P, Malloy-Walton L, LaPage M, Mah D, Miyazaki A, Motonaga K, Niu M, Olen M, Paul T, Rosenthal E, Saarel E, Silvetti MS, Stephenson E, Tan R, Triedman J, Von Bergen N, Wackel P; Writing Committee Members., Document Reviewers. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients. Indian Pacing Electrophysiol J 2021:S0972-6292(21)00115-7. [PMID: 34333141 DOI: 10.1016/j.ipej.2021.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
In view of the increasing complexity of both cardiovascular implantable electronic devices (CIEDs) and patients in the current era, practice guidelines, by necessity, have become increasingly specific. This document is an expert consensus statement that has been developed to update and further delineate indications and management of CIEDs in pediatric patients, defined as ≤21 years of age, and is intended to focus primarily on the indications for CIEDs in the setting of specific disease categories. The document also highlights variations between previously published adult and pediatric CIED recommendations and provides rationale for underlying important differences. The document addresses some of the deterrents to CIED access in low- and middle-income countries and strategies to circumvent them. The document sections were divided up and drafted by the writing committee members according to their expertise. The recommendations represent the consensus opinion of the entire writing committee, graded by class of recommendation and level of evidence. Several questions addressed in this document either do not lend themselves to clinical trials or are rare disease entities, and in these instances recommendations are based on consensus expert opinion. Furthermore, specific recommendations, even when supported by substantial data, do not replace the need for clinical judgment and patient-specific decision-making. The recommendations were opened for public comment to Pediatric and Congenital Electrophysiology Society (PACES) members and underwent external review by the scientific and clinical document committee of the Heart Rhythm Society (HRS), the science advisory and coordinating committee of the American Heart Association (AHA), the American College of Cardiology (ACC), and the Association for European Paediatric and Congenital Cardiology (AEPC). The document received endorsement by all the collaborators and the Asia Pacific Heart Rhythm Society (APHRS), the Indian Heart Rhythm Society (IHRS), and the Latin American Heart Rhythm Society (LAHRS). This document is expected to provide support for clinicians and patients to allow for appropriate CIED use, appropriate CIED management, and appropriate CIED follow-up in pediatric patients.
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23
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Silka MJ, Shah MJ, Silva JA, Balaji S, Beach C, Benjamin M, Berul C, Cannon B, Cecchin F, Cohen M, Dalal A, Dechert B, Foster A, Gebauer R, Gonzalez Corcia MC, Kannankeril P, Karpawich P, Kim J, Krishna MR, Kubuš P, Malloy-Walton L, LaPage M, Mah D, Miyazaki A, Motonaga K, Niu M, Olen M, Paul T, Rosenthal E, Saarel E, Silvetti MS, Stephenson E, Tan R, Triedman J, Von Bergen N, Wackel P. 2021 PACES Expert Consensus Statement on the Indications and Management of Cardiovascular Implantable Electronic Devices in Pediatric Patients: Executive Summary. Indian Pacing Electrophysiol J 2021; 21:349-366. [PMID: 34333142 PMCID: PMC8577082 DOI: 10.1016/j.ipej.2021.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Guidelines for the implantation of cardiac implantable electronic devices (CIEDs) have evolved since publication of the initial ACC/AHA pacemaker guidelines in 1984 [1]. CIEDs have evolved to include novel forms of cardiac pacing, the development of implantable cardioverter defibrillators (ICDs) and the introduction of devices for long term monitoring of heart rhythm and other physiologic parameters. In view of the increasing complexity of both devices and patients, practice guidelines, by necessity, have become increasingly specific. In 2018, the ACC/AHA/HRS published Guidelines on the Evaluation and Management of Patients with Bradycardia and Cardiac Conduction Delay [2], which were specific recommendations for patients >18 years of age. This age-specific threshold was established in view of the differing indications for CIEDs in young patients as well as size-specific technology factors. Therefore, the following document was developed to update and further delineate indications for the use and management of CIEDs in pediatric patients, defined as ≤21 years of age, with recognition that there is often overlap in the care of patents between 18 and 21 years of age. This document is an abbreviated expert consensus statement (ECS) intended to focus primarily on the indications for CIEDs in the setting of specific disease/diagnostic categories. This document will also provide guidance regarding the management of lead systems and follow-up evaluation for pediatric patients with CIEDs. The recommendations are presented in an abbreviated modular format, with each section including the complete table of recommendations along with a brief synopsis of supportive text and select references to provide some context for the recommendations. This document is not intended to provide an exhaustive discussion of the basis for each of the recommendations, which are further addressed in the comprehensive PACES-CIED document [3], with further data easily accessible in electronic searches or textbooks.
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Affiliation(s)
| | - Michael J Silka
- University of Southern California Keck School of Medicine, Los Angeles, California.
| | - Maully J Shah
- University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.
| | | | | | - Cheyenne Beach
- Yale University School of Medicine, New Haven, Connecticut
| | - Monica Benjamin
- Hospital de Pediatría Juan P. Garrahan, Hospital El Cruce, Hospital Británico de Buenos Aires, Instituto Cardiovascular ICBA, Buenos Aires, Argentina
| | | | | | - Frank Cecchin
- New York Univeristy Grossman School of Medicine, New York, New York
| | | | - Aarti Dalal
- Washington University in St. Louis, St. Louis, Missouri
| | | | - Anne Foster
- Advocate Children's Heart Institute, Chicago, Illinois
| | - Roman Gebauer
- Heart Centre Leipzig, University of Leipzig, Leipzig, Germany
| | | | | | - Peter Karpawich
- University Pediatricians, Children's Hospital of Michigan, Detroit, Michigan
| | | | | | - Peter Kubuš
- Children's Heart Center, Charles University in Prague and Motol University Hospital, Prague, Czech Republic
| | | | | | - Doug Mah
- Harvard Medical School, Boston, Massachussetts
| | - Aya Miyazaki
- Shizuoka General Hospital and Mt. Fuji Shizuoka Children's Hospital, Shizuoka, Japan
| | | | - Mary Niu
- University of Utah Health Sciences Center, Salt Lake City, Utah
| | | | - Thomas Paul
- Georg-August-University Medical Center, Göttingen, Germany
| | - Eric Rosenthal
- Evelina London Children's Hospital and St Thomas' Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | | | | | | | - Reina Tan
- New York University Langone Health, New York, New York
| | - John Triedman
- University of Missouri-Kansas City School of Medicine, Kansas City, Missouri
| | - Nicholas Von Bergen
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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Aibeche C, Selami N, Zitouni-Haouar FEH, Oeunzar K, Addou A, Kaid-Harche M, Djabeur A. Bioremediation potential and lead removal capacity of heavy metal-tolerant yeasts isolated from Dayet Oum Ghellaz Lake water (northwest of Algeria). Int Microbiol 2021; 25:61-73. [PMID: 34227024 DOI: 10.1007/s10123-021-00191-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 05/22/2021] [Accepted: 06/29/2021] [Indexed: 11/30/2022]
Abstract
Seven metal-resistant yeast strains were isolated and selected from Dayet Oum Ghellaz Lake water (northwest of Algeria) known as a highly polluted area by lead and cadmium. The yeast strains were screened on the basis of their resistance to seven heavy metals Hg, Cr, Cd, Pb, Cu, Zn, and Fe and characterized by molecular and phylogenetic analysis. The sequencing of the D1/D2 domain of the 26S rRNA genes revealed the affiliation of the seven yeast isolates to Rhodotorula mucilaginosa, Clavispora lusitaniae, and Wickerhamomyces anomalus species. All yeast strains were halotolerant as they were able to grow in 10-15% NaCl. The yeast isolates were highly resistant to the studied heavy metals and exhibited different tolerance according to the metal type. The highest minimum inhibitory concentrations (MIC) were observed in R. mucilaginosa RO7 and W. anomalus WO2 strains which were then selected for lead removal assays. The present study is the first to investigate the lead elimination by W. anomalus. The lead uptake was significantly affected by biomass concentration in a reverse relationship, with purification percentages estimated at 98.15 ± 0.9% and 97.046 ± 0.47% and removal efficiency of 12.68 ± 0.91 and 15.55 ± 0.72 mg/g for W. anomalus WO2 and R. mucilaginosa RO7, respectively. The investigated metal-tolerant yeast strains proved to be promising candidates for bioremediation processes of heavy metals. This work amends the metal-resistant yeast bank with new strains having interesting abilities to resist to relatively high concentrations of toxic heavy metals and which can be used in the near future as low-cost biosorbents.
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Affiliation(s)
- Chahrazed Aibeche
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria.
| | - Nawel Selami
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria
| | - Fatima El-Houaria Zitouni-Haouar
- Laboratoire de Biologie Des Microorganismes Et de Biotechnologie, Département de Biotechnologie, Faculté Des Sciences de La Nature Et de La Vie, Université Oran, 1 Ahmed Ben Bella, Oran, Algeria
| | - Khadidja Oeunzar
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria
| | - Amira Addou
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria
| | - Meriem Kaid-Harche
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria
| | - Abderrezak Djabeur
- Laboratoire Des Productions, Valorisations Végétales Et Microbiennes (LP2VM), Département de Biotechnologie, Université Des Sciences Et de La Technologie D'Oran Mohamed Boudiaf (USTO-MB), B.P. 1505, El-Mn'aour, 31000, Oran, Algeria
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25
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Agnello M, Vottero M, Bertapelle P. Removal of sacral neuromodulation quadripolar tined-lead using a straight stylet: description of a surgical technique. Tech Coloproctol 2021; 25:957-963. [PMID: 33886009 PMCID: PMC8289802 DOI: 10.1007/s10151-020-02403-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/28/2020] [Indexed: 11/26/2022]
Abstract
Background Up to 7.5% of tined-lead removals in patients having sacral neuromodulation (SNM) therapy are associated with a lead breakage. It is still unclear what adverse effects can be caused by unretrieved fragments. The aim of our study was to describe the lead removal technique we have been using for the last 2 years in our centre. Methods We retrospectively enrolled patients who had lead removal between January 2018 and January 2020 using our standardized technique. The novelty of the technique is in the use of the straight stylet, which is available in the quadripolar tined-lead kit. The stylet gives the electrode greater stiffness, reducing interactions with surrounding tissues and probability of damage or breakage during removal. Results In 59 patients (42 women, mean age 57.2 years [range 40–79 years]) the lead was removed using our standardized technique. In 44 of 59 patients, the tined-lead was removed within 2 months from the SNM-test, due to lack of beneficial effects. In 15 patients the electrode was removed because of failure of definitive implantation. Meantime from definitive implantable pulse generator (IPG) implantation to lead removal was 67.9 months. We recorded only 1 case of lead-breakage during removal: a female patient with a non-tined lead fixed on sacral bone, placed 18 years previously using an open technique. Conclusions Lead breakage during removal is not uncommon and adverse effects of retained fragments may occur. Our technique has been safely used for the last 2 years in our centre, with no episodes of lead breakage or retained fragments, except for one non-tined electrode. Supplementary Information The online version contains supplementary material available at 10.1007/s10151-020-02403-6.
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Affiliation(s)
- M Agnello
- Scuola di Medicina, Dipartimento di Scienze Chirurgiche, SC Neuro-Urologia, A.O.U. Città della Salute e della Scienza di Torino, Università degli Studi di Torino, Turin, Italy.
| | - M Vottero
- SC Neuro-Urologia, A.O.U. Città della Salute e della Scienza, Turin, Italy
| | - P Bertapelle
- SC Neuro-Urologia, A.O.U. Città della Salute e della Scienza, Turin, Italy
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26
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Wei J, Duan L, Wei J, Hoffmann E, Song Y, Meng X. Lead removal from water using organic acrylic amine fiber (AAF) and inorganic-organic P-AAF, fixed bed filtration and surface-induced precipitation. J Environ Sci (China) 2021; 101:135-144. [PMID: 33334509 DOI: 10.1016/j.jes.2020.08.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 06/12/2023]
Abstract
Granular porous sorbents were normally used for heavy metals removal from water. To search for the new commercial sorbent and treatment strategy, an organic acrylic amine fiber (AAF) and phosphorus loading inorganic-organic AAF (P-AAF) were prepared and used for lead (Pb) removal from water. A new strategy of inorganic-organic coupling technology was proposed for Pb removal, based on the hypothesis of surface-induced precipitation mechanism. The AAF showed a Pb adsorption capacity of 417 mg/g from the Langmuir fitting, while the column filtration technology was further applied to measure the adsorption edge and applications. Effects of different initial Pb concentrations, hydraulic retention time, and co-existing P were considered in the filtration experiments. The presence of 0.8 mg/L P in water significantly improved the Pb breakthrough point from 15,000 to 41,000 bed volumes of water spiked with 85 µg/L Pb, while the P-AAF fixed bed showed better removal of Pb than AAF SEM/EDX and XRD spectra were employed for determining the surface functional groups and the formation of surface-induced precipitation of pyromorphite (Pb5(PO4)3OH) on AAF. This study verified the application of AAF sorbent for Pb removal and the enhanced effect of coating P on AAF, thus improved our fundamental understanding and application of the surface chemistry process of Pb with P.
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Affiliation(s)
- Jinshan Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, USA; School of Environment, Tsinghua University, Beijing 100084, China.
| | - Lijie Duan
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; School of Environment, Tsinghua University, Beijing 100084, China
| | - Jian Wei
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Erhard Hoffmann
- Department of Aquatic Environmental Engineering, Karlsruhe Institute of Technology, Karsruhe 76131, Germany
| | - Yonghui Song
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
| | - Xiaoguang Meng
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
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27
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Goyal P, Tiwary CS, Misra SK. Ion exchange based approach for rapid and selective Pb(II) removal using iron oxide decorated metal organic framework hybrid. J Environ Manage 2021; 277:111469. [PMID: 33049615 DOI: 10.1016/j.jenvman.2020.111469] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 09/13/2020] [Accepted: 10/02/2020] [Indexed: 06/11/2023]
Abstract
Polyacrylic acid capped Fe3O4 - Cu-MOF (i-MOF) hybrid was prepared for rapid and selective lead removal, with 93% removal efficiency, exceptional selectivity, and adsorption capacity of 610 mg/g and 91% of i-MOF hybrid could be easily separated from the contaminated water using magnetic separation. The adsorption process followed a pseudo-second-order model and the adsorption efficiency decreased from 93% to 83% on raising the temperature from 25 °C to 40 °C. The change in equilibrium adsorption capacity with respect to equilibrium adsorbate concentration followed the Langmuir isotherm model. i-MOF had a high selectivity coefficient and removal efficiency for lead ions even when exposed simultaneously with naturally abundant cations (Na(I), Ca(II), Mg(II)). Release of Cu(II) ions from the i-MOF after Pb(II) removal suggested suggested ion-exchange to be the dominant removal mechanism. This new finding for Pb(II) removal with excellent adsorption performance using i-MOF through ion exchange based approach is a viable option for treating lead contaminated water.
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Affiliation(s)
- Prateek Goyal
- Materials Science and Engineering, Indian Institute of Technology Gandhinagar, Gujarat, India
| | - Chandra Shekhar Tiwary
- Materials Science & Metallurgical Engineering, Indian Institute of Technology Kharagpur, India
| | - Superb K Misra
- Materials Science and Engineering, Indian Institute of Technology Gandhinagar, Gujarat, India; Mechnanical Engineering, Indian Institute of Technology Gandhinagar, Gujarat, India.
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Cheraghipour E, Pakshir M. Process optimization and modeling of Pb(II) ions adsorption on chitosan-conjugated magnetite nano-biocomposite using response surface methodology. Chemosphere 2020; 260:127560. [PMID: 32688314 DOI: 10.1016/j.chemosphere.2020.127560] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 06/25/2020] [Accepted: 06/26/2020] [Indexed: 05/13/2023]
Abstract
This study aimed to investigate the performance of a magnetic nano-biocomposite, chitosan conjugated magnetite nanoparticle (CH-MNP), for the removal of lead ions. The magnetite nanoparticles were synthesized through a controlled co-precipitation technique and were stabilized with citric acid. Subsequently, they were covalently bonded to chitosan via carbodiimide chemistry using EDAC/NHS activation. One of the notable advantages of this nano-biocomposite is its chemical conjugation, which does not have the weakness of the ultimate chitosan detachment of a physical bond and makes it an encouraging candidate for magnetic separation with no secondary waste production. The CH-MNPs had a diameter of ∼10 nm, with a saturation magnetization of 76.01 emu/g ensuring a superparamagnetic property. The response surface methodology (RSM) with a central composite design (CCD) framework was used for optimizing the adsorption process. The optimum conditions to achieve 92.15% of Pb(II) removal were found to be at a pH of 6.1 with the nano-adsorbent concentration of 1.04 g/L and a contact time of 59.92 min. Our adsorption isotherm data were fitted well with the Langmuir adsorption isotherm model, and the equilibrium data followed the pseudo-second-order kinetics and intraparticle diffusion kinetic model. The maximum Langmuir Pb(II) adsorption capacity was calculated to be 192.308 mg/g. These results suggest that the proposed synthetic nano-biocomposite is quite an ideal nano-adsorbent for Pb(II) removal in wastewater treatment technology.
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Affiliation(s)
- Elham Cheraghipour
- Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, 7134851154, Iran.
| | - Mahmoud Pakshir
- Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, 7134851154, Iran.
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Simonescu CM, Mason TJ, Călinescu I, Lavric V, Vînătoru M, Melinescu A, Culiţă DC. Ultrasound assisted preparation of calcium alginate beads to improve absorption of Pb +2 from water. Ultrason Sonochem 2020; 68:105191. [PMID: 32485629 DOI: 10.1016/j.ultsonch.2020.105191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 05/22/2020] [Accepted: 05/25/2020] [Indexed: 06/11/2023]
Abstract
Calcium alginate (CaAlg) beads were prepared using ultrasound for use in the removal of lead from natural and wastewaters by ion exchange. Ultrasound was applied in a batch mode with an ultrasonic bath or in a flow mode using an ultrasonic clamp-on device. For comparison purposes the synthesis was performed in batch mode in the absence of the ultrasound. The beads prepared using ultrasound showed a greater ion exchange capability which could be ascribed to a larger specific surface area as a result of surface roughening induced by cavitation. Scanning Electron Microscopy (SEM) images revealed that the roughening was in the form of corrugation for the product with the best ion exchange capability obtained in the flow process where preformed CaAlg droplets were subjected to ultrasound during the setting process. These beads performed 11% better for lead removal than those synthesized in the absence of ultrasound.
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Affiliation(s)
- Claudia Maria Simonescu
- Faculty of Applied Chemistry and Material Science, University "Politehnica" of Bucharest, 1-7, Gh. Polizu, Bucharest 011061, Romania
| | - Timothy J Mason
- Centre for Research in the Built and Natural Environment, Coventry University, United Kingdom.
| | - Ioan Călinescu
- Faculty of Applied Chemistry and Material Science, University "Politehnica" of Bucharest, 1-7, Gh. Polizu, Bucharest 011061, Romania.
| | - Vasile Lavric
- Faculty of Applied Chemistry and Material Science, University "Politehnica" of Bucharest, 1-7, Gh. Polizu, Bucharest 011061, Romania
| | - Mircea Vînătoru
- Faculty of Applied Chemistry and Material Science, University "Politehnica" of Bucharest, 1-7, Gh. Polizu, Bucharest 011061, Romania
| | - Alina Melinescu
- Faculty of Applied Chemistry and Material Science, University "Politehnica" of Bucharest, 1-7, Gh. Polizu, Bucharest 011061, Romania
| | - Daniela Cristina Culiţă
- Ilie Murgulescu Institute of Physical Chemistry, 202 Splaiul Independentei, Bucharest 060021, Romania
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Meng L, Li Z, Liu L, Chen X, Li W, Zhang X, Dong M. Lead removal from water by a newly isolated Geotrichum candidum LG-8 from Tibet kefir milk and its mechanism. Chemosphere 2020; 259:127507. [PMID: 32650171 DOI: 10.1016/j.chemosphere.2020.127507] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 06/01/2020] [Accepted: 06/20/2020] [Indexed: 06/11/2023]
Abstract
In this study, a yeast-like fungal strain (LG-8), newly isolated from spontaneous Tibet kefir in China, was identified as Geotrichum candidum on the basis of its morphological characteristics and ITS5.8S gene sequence. Interestingly, the strain was able to remove more than 99% of Pb2+ ions in water at low concentrations and a maximum of 325.68 mg lead/g of dry biomass. The results of selective passivation experiments suggested that phosphate, amide and carboxyl groups on the cell wall contributed to lead removal. Scanning electron microscopy (SEM) photomicrographs revealed that large amounts of micro/nanoparticles formed on the cell wall, and energy dispersive X-ray spectroscopy (EDX) results further indicated the presence of lead along with phosphorus and chlorine in the particles. Furthermore, the results of Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analyses revealed that the particles were composed of pyromorphite [Pb5(PO4)3Cl], a highly insoluble lead mineral. Importantly, this is the first time that the biomineralization of lead into pyromorphite has been observed as the major mechanism for lead removal by G. candidum LG-8, providing a new strategy to scavenge heavy metals from aquatic environment in an eco-friendly manner.
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Affiliation(s)
- Ling Meng
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Zhiyu Li
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Lizhi Liu
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Xiaohong Chen
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China.
| | - Wei Li
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China
| | - Xuhui Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, 210037, Nanjing, Jiangsu, China
| | - Mingsheng Dong
- College of Food Science and Technology, Nanjing Agricultural University, 210095, Nanjing, Jiangsu, China.
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Wei J, Meng X, Song Y, Shi Q, Wen X, Korfiatis G. Surface mole-ratio method to distinguish surface precipitation and adsorption on solid-liquid interface. J Hazard Mater 2020; 397:122781. [PMID: 32388096 DOI: 10.1016/j.jhazmat.2020.122781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 06/11/2023]
Abstract
The enhancement effects of phosphate (P) on Pb removal by adsorbents have been attributed to co-adsorption of P and Pb, the formation of P-Pb surface ternary surface complexes, and surface precipitation of P and Pb. However, distinguishing adsorption from surface precipitation in multi-adsorbate systems has been a challenge. For the first time, a surface mole-ratio (SMR) method was established and applied for delineating Pb-P precipitation and Pb adsorption on an acrylic amine fiber (AAF) adsorbent. In elaborating the SMR method, we developed Pb removal experiments by mixing solutions containing 0.2 g/L of AAF, 6 and 12 μmol/L P, and 0-35 μmol/L Pb. When the removed Pb/P (μmol/μmol) was plotted as a function of the equilibrium Pb (μmol/L), the SMR diagram exhibited a turning-point similar to the Pb/P mole ratio of 5/3 = 1.67 in pyromorphite (Pb5(PO4)3OH) precipitate. The SMR diagram indicated that when the Pb concentration increased, the precipitate formed first; after all P formed precipitates, Pb was removed by adsorption. The precipitation and adsorption processes were further confirmed by other SMR diagrams, FTIR, SEM-EDX, and XRD analysis. The SMR method will have broad applications in determining the removal mechanisms of multi-adsorbates by adsorbents and coagulants, and stabilization mechanisms of heavy metals in soils. With the development and application of more modern in-situ characterization techniques, SMR method will be more effective.
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Affiliation(s)
- Jinshan Wei
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China.
| | - Xiaoguang Meng
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ, USA.
| | - Yonghui Song
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China.
| | - Qiantao Shi
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ, USA
| | - Xianghua Wen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - George Korfiatis
- Center for Environmental Systems, Stevens Institute of Technology, Hoboken, NJ, USA
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Zhang S, Du Q, Sun Y, Song J, Yang F, Tsang DCW. Fabrication of L-cysteine stabilized α-FeOOH nanocomposite on porous hydrophilic biochar as an effective adsorbent for Pb 2+ removal. Sci Total Environ 2020; 720:137415. [PMID: 32325559 DOI: 10.1016/j.scitotenv.2020.137415] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 02/04/2020] [Accepted: 02/16/2020] [Indexed: 06/11/2023]
Abstract
Lead (Pb) pollution has caused worldwide attention as it can cause hazards to humans and the environment. Chemical properties and structures of the adsorbent greatly influence the Pb2+ removal efficiency. L-cysteine (L-cy) stabilized porous hydrophilic biochar-supported α-FeOOH nanocomposites (L-cy/FeOOH@PHB) are prepared as an efficient adsorbent via a cheap and simple one-step hydrothermal method for removing Pb2+ from aqueous solution. Characterizations of the synthesized L-cy/FeOOH@PHB revealed that the iron particles distributed uniformly on the surface of porous hydrophilic biochar. The equilibrium adsorption capacity of the L-cy/FeOOH@PHB reaches up to 103.04 mg g-1for Pb2+ removal, higher than other typical materials reported preiously. The adsorption kinetics and isotherms were fitted well with the pseudo-second-order model and the Freundlich model, respectively, suggesting chemical adsorption on the heterogeneous surface and pores of L-cy/FeOOH@PHB. The introduction of L-cysteine provides abundant surface N- and S-containing functional groups as active sites for Pb2+ adsorption and also plays an important role in altering the porous structure, distribution of α-FeOOH nanoparticles, affinity of iron species to biochar, and surface functional groups, which determined the performance of the resultant composites. Notably, regeneration experiments show that Pb2+ adsorption capacity still maintains at 77.3 mg g-1 on L-cy/FeOOH@PHB after five successive utilizations, indicating the potential applicability for removing Pb2+ from aqueous solution.
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Affiliation(s)
- Shuaishuai Zhang
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China
| | - Qing Du
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Yuqing Sun
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jingpeng Song
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Fan Yang
- Joint laboratory of Northeast Agricultural University and Max Planck Institute of Colloids and Interfaces (NEAU-MPICI), Harbin 150030, China; School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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Zeng C, Hu H, Feng X, Wang K, Zhang Q. Activating CaCO 3 to enhance lead removal from lead-zinc solution to serve as green technology for the purification of mine tailings. Chemosphere 2020; 249:126227. [PMID: 32087456 DOI: 10.1016/j.chemosphere.2020.126227] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 02/07/2020] [Accepted: 02/13/2020] [Indexed: 06/10/2023]
Abstract
Efficient lead removal from metal-containing wastewater, such as acid mine drainage (AMD), is an important step in environmental purification and secondary resources recovery. In this paper, a novel approach by mechanochemically activating CaCO3 through simply wet ball milling in metal-containing solution was developed, where selective Pb2+ precipitation in the form of PbCO3 was achieved based on its reaction with the CO32- from the activated CaCO3. By such milling operation, the removal efficiency of Pb2+ from aqueous solution could reach over 99%, while more than 99% Zn2+ (as well as Mn, Ni and Cd) was remaining in the solutions, demonstrating the feasibility and high effectiveness of precipitating Pb2+ and serving the purpose of recovering other metals without Pb impurity. The solubility differences between Pb carbonate and other carbonates of Zn, Mn, Ni or Cd were understood to be the main pathway and using CaCO3 would offer an easy operation and environmental friendly process to purify the metals-containing wastewater by precipitating Pb, compared with the difficulties when using alkaline neutralization to treat them. In addition, basic zinc carbonate (a zinc-containing ore waste) as an alternative precipitant to CaCO3 in the separation process was also confirmed to increase the zinc recovery in the solution while maintaining high Pb2+ removal efficiency.
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Affiliation(s)
- Chaocheng Zeng
- School of Resources & Environmental Engineering, Wuhan University of Technology, 430070, Wuhan, China
| | - Huimin Hu
- School of Resources & Environmental Engineering, Wuhan University of Technology, 430070, Wuhan, China.
| | - Xinhao Feng
- School of Resources & Environmental Engineering, Wuhan University of Technology, 430070, Wuhan, China
| | - Kui Wang
- School of Resources & Environmental Engineering, Wuhan University of Technology, 430070, Wuhan, China
| | - Qiwu Zhang
- School of Resources & Environmental Engineering, Wuhan University of Technology, 430070, Wuhan, China.
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Zhang J, Hou D, Shen Z, Jin F, O'Connor D, Pan S, Ok YS, Tsang DCW, Bolan NS, Alessi DS. Effects of excessive impregnation, magnesium content, and pyrolysis temperature on MgO-coated watermelon rind biochar and its lead removal capacity. Environ Res 2020; 183:109152. [PMID: 32006766 DOI: 10.1016/j.envres.2020.109152] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/14/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
MgO-coated watermelon rind biochar (MWRB) is a potentially highly-effective waste-derived material in environmental applications. This research aims to provide valuable insights into the optimization of the production of MWRB for superior environmental performance. It was found that the Mg content of the MWRB could be easily controlled by adjusting the Mg/feedstock mass ratio during excessive impregnation. The BET surface area was found to first increase and then decrease as the Mg content of the MWRB (produced at 600 °C) increased from 1.52% to 10.1%, with an optimal surface area of 293 m2/g observed at 2.51%. Similarly, an optimum pyrolysis temperature of 600 °C was observed in the range of 400-800 °C for a maximum surface area of the MWRB at a fixed Mg/feedstock ratio of 0.48% (resulting in MWRBs with Mg contents of 1.89-2.51%). The Pb removal capacity of the MWRB (produced at 600 °C) increased with increasing Mg content, with a greatest Pb removal capacity of 558 mg/g found for the MWRB with the highest Mg content (10.1%), an improvement of 208% over the 181 mg/g Pb removal capacity of unmodified WRB produced at 600 °C. The Pb removal capacity of the MWRB (produced with 1.89-2.51% Mg) was also discovered to increase from 81.7 mg/g (at 400 °C) to 742 mg/g (at 700 °C), before dropping to 368 mg/g at 800 °C. These findings suggest that the MWRB can be more efficiently utilized in soil and water remediation by optimizing its synthesis conditions.
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Affiliation(s)
- Jingzhuo Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing, 100084, China.
| | - Zhengtao Shen
- School of Environment, Tsinghua University, Beijing, 100084, China; Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, T6G 2E3, Canada.
| | - Fei Jin
- School of Engineering, University of Glasgow, Glasgow, G12 8QQ, United Kingdom
| | - David O'Connor
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Shizhen Pan
- School of Environment, Tsinghua University, Beijing, 100084, China; School of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing, 100083, China
| | - Yong Sik Ok
- Korea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI) & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Nanthi S Bolan
- Global Centre for Environmental Remediation, ATC Building, Faculty of Science and Information Technology, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Daniel S Alessi
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, T6G 2E3, Canada
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Ramola S, Belwal T, Li CJ, Wang YY, Lu HH, Yang SM, Zhou CH. Improved lead removal from aqueous solution using novel porous bentonite - and calcite-biochar composite. Sci Total Environ 2020; 709:136171. [PMID: 31905582 DOI: 10.1016/j.scitotenv.2019.136171] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/13/2019] [Accepted: 12/15/2019] [Indexed: 06/10/2023]
Abstract
Biochar-mineral (bentonite/calcite) composite (BC-CM) prepared at different temperatures were tested under varied conditions for effective removal of lead (Pb) from aqueous solution. With increasing pyrolysis temperature, increased surface area, pore volume, bentonite decomposition and less or no decomposition of calcite occurred. Bentonite-biochar (BCS) and calcite-biochar (CCS) prepared at 700 °C were found most suitable for efficient removal of Pb (99.9%). Bentonite and calcite acted as catalyst and contributed to changes in yield, pH, texture, functional groups, minerals and carbonization that facilitated efficient Pb removal by BCS 700 and CCS 700. Pb concentration, pH, dose of BCS and CCS, and contact time were further optimized using response surface methodology (RSM) for maximizing removal percentage (R%) of Pb and adsorption capacity (qt). Both BCS 700 and CCS 700 showed similar effects (positive/negative) of factors on R% and qt. Under optimized conditions, 0.21 g of BCS 700 effectively removed 99.2% of 431 mg/L in 3.6 h at solution pH of 4.2, while 0.07 g CCS 700 removed 97.06% of 232 mg/L in 3.5 h at 5.5 pH. Removal of Pb onto both BCS and CCS was by monolayer adsorption with maximum adsorption capacity of 500 mg/g. Rapid Pb removal was observed within 2 h of contact time (CCS 700 > BCS 700) and equilibrium was achieved within 10 h. BCS 700 followed first order and CCS 700 followed second order kinetic model. Electrostatic attraction between Pb ions and mineral groups present in BCS 700 and CCS 700 also played important role in Pb removal. This study clearly demonstrated that composite of biochar with bentonite or calcite under optimized conditions significantly improved Pb removal and adsorption capacity that can be further utilized for larger scale applications.
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Affiliation(s)
- Sudipta Ramola
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang 242804, An Hui, China
| | - Tarun Belwal
- Zhejiang University, College of Biosystems Engineering and Food Science, Zhejiang Key Laboratory for Agri-Food Processing, Key Laboratory of Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Hangzhou, 310058, China
| | - Cun Jun Li
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang 242804, An Hui, China
| | - Yu Ying Wang
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; Engineering Research Center of Biochar of Zhejiang Province, Hangzhou 310021, China
| | - Hao Hao Lu
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; Engineering Research Center of Biochar of Zhejiang Province, Hangzhou 310021, China
| | - Sheng Mao Yang
- Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; Engineering Research Center of Biochar of Zhejiang Province, Hangzhou 310021, China.
| | - Chun Hui Zhou
- Research Group for Advanced Materials & Sustainable Catalysis (AMSC), State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China; Qing Yang Institute for Industrial Minerals, You Hua, Qing Yang 242804, An Hui, China.
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Zhang J, Hu X, Yan J, Long L, Xue Y. Crayfish shell biochar modified with magnesium chloride and its effect on lead removal in aqueous solution. Environ Sci Pollut Res Int 2020; 27:9582-9588. [PMID: 31916176 DOI: 10.1007/s11356-020-07631-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
In this study, crayfish shell was pyrolyzed at 600 °C to obtain an unmodified biochar (CS600). MgCl2 was used as a modifier to pretreat crayfish shell to produce a modified biochar (CS600-MgCl2) under the same pyrolysis conditions. The two biochars were characterized for physicochemical properties and evaluated for lead (Pb2+) sorption ability to determine the modification mechanism. Mono-element batch adsorption experiments were conducted to compare the sorption performances of CS600 and CS600-MgCl2 to Pb2+ in aqueous solutions. All the experiments were carried out at pH of 7. According to the Freundlich-Langmuir model, CS600-MgCl2 had a higher adsorption capacity (152.3 mg/g) than CS600 (134.3 mg/g). FTIR, SEM, XRD, BET, and ICP analyses were applied to inform the interpretation of the mechanism. CS600 was calcium-rich and mainly removed Pb2+ through the ion exchange mechanism by replacing Ca2+ in the biochar. The increased Pb2+ adsorption capacity of CS600-MgCl2 was mainly due to the enlarged specific surface area and the formation of Mg3(OH)5Cl·4H2O on the modified biochar. Findings of this study suggest that both CS600 and CS600-MgCl2 can be used to remove heavy metal ions from wastewater and MgCl2 can improve the sorption performance of biochar.
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Affiliation(s)
- Jiaqi Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Xiaolan Hu
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Jinpeng Yan
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Li Long
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China.
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Thilagar G, Samuthirapandian R. Chitosan from crustacean shell waste and its protective role against lead toxicity in Oreochromis mossambicus. Toxicol Rep 2020; 7:296-303. [PMID: 32071883 PMCID: PMC7016161 DOI: 10.1016/j.toxrep.2020.02.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 01/14/2020] [Accepted: 02/06/2020] [Indexed: 12/29/2022] Open
Abstract
In the current study heavy metal removing capability and antioxidant properties of chitosan supplemented diet tested in lead poisoning induced Oreochromis mossambicus in comparison with and standard fish diet. O. mossambicus fishes weighed (20 ± 2gm) were purchased from a local commercial fish pond and acclimated to the laboratory conditions for 10 days. After that fish were dived into four groups, each group received respective feed throughout the experimental period. The fish fed with standard diet exhibited drastic weakening of superoxide dismutase (SOD), catalase (CAT), reduced glutathione (GR), glutathione peroxidase (GPx), ascorbic acid, α- tocopherol and β-carotene and also displayed abnormal histological changes in gills, liver, and intestine. The fish fed with a chitosan supplemented diet for 10 days showed substantial enhancements in antioxidant levels and also normal histological structures of organs in the fish.
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Zhang K, Xue Y, Zhang J, Hu X. Removal of lead from acidic wastewater by bio-mineralized bacteria with pH self-regulation. Chemosphere 2020; 241:125041. [PMID: 31610457 DOI: 10.1016/j.chemosphere.2019.125041] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 09/03/2019] [Accepted: 10/02/2019] [Indexed: 06/10/2023]
Abstract
Microorganisms with the function of bio-mineralization were isolated from a soil. They were identified as urease-producing bacteria and phosphate-solubilizing bacteria. These two kinds of bacteria belong to the eosinophilic bacteria, which regulated the pH of solution and removed Pb2+ the best at the initial solution pH of 4. The Pb2+ removal mechanism was further explored using various techniques including zeta potential measurement, three-dimensional fluorescence, FTIR, XRD, and TEM-EDS. The results showed that extracellular adsorption, intracellular accumulation and bio-mineralization occurred at the same time and converted to each other. The extracellular adsorption of urease-producing bacteria was through electrostatic adsorption and gradually decomposed urea to produce PbCO3 minerals. The extracellular adsorption of phosphate-solubilizing bacteria was controlled by extracellular polymeric substances (EPS) and rapidly formation of Pb3(PO4)2 stable minerals. In addition, the stabilities of Lead minerals of the two strains were compared. The results showed that the precipitates of phosphate-solubilizing bacteria were more stable. While phosphate-solubilizing bacteria have some advantages, both strains can play important roles in bio-mineralization of HMs in acidic wastewater.
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Affiliation(s)
- Kejing Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China.
| | - Jiaqi Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Xiaolan Hu
- School of Civil Engineering, Wuhan University, Wuhan, China
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Gao R, Xiang L, Hu H, Fu Q, Zhu J, Liu Y, Huang G. High-efficiency removal capacities and quantitative sorption mechanisms of Pb by oxidized rape straw biochars. Sci Total Environ 2020; 699:134262. [PMID: 31677473 DOI: 10.1016/j.scitotenv.2019.134262] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/31/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Chemical oxidation is an effective method to improve the ability of biochars for metals removal, but there are too few studies on screening of high-efficiency oxidants and quantitative analysis of sorption mechanisms. In this study, rape straw biochars (BC) were oxidized with HNO3, H2O2, and KMnO4, and noted as BC-HNO3, BC-H2O2, and BC-Mn, respectively. The Pb removal capacities and quantitative sorption mechanisms of biochars were explored through batch sorption experiments. Compared with that of BC (175 mmol kg-1), the maximum Pb sorption capacities of BC-HNO3 and BC-H2O2 increased to 526 and 917 mmol kg-1, in which contribution of surface complexation accounted for 55.1% and 39.0%, respectively. Due to the large surface area and abundant newly formed MnO2, BC-Mn showed the maximum Pb sorption capacity of 1343 mmol kg-1, and its high removal efficiency appeared even at low pH value (pH = 2) and high initial Pb concentration (1.0 mol L-1). The contribution of cation exchange accounted for 97.4% of the Pb sorption by BC-Mn. These results suggested BC-Mn had great potential for Pb removal from aqueous solution, and the quantitative analyses of sorption mechanisms revealed the contribution of each mechanism and provided a basis for evaluating application prospects of biochars.
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Affiliation(s)
- Ruili Gao
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Lin Xiang
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongqing Hu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Qingling Fu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Jun Zhu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Yonghong Liu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Guoyong Huang
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
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Maged A, Ismael IS, Kharbish S, Sarkar B, Peräniemi S, Bhatnagar A. Enhanced interlayer trapping of Pb(II) ions within kaolinite layers: intercalation, characterization, and sorption studies. Environ Sci Pollut Res Int 2020; 27:1870-1887. [PMID: 31760617 PMCID: PMC6994523 DOI: 10.1007/s11356-019-06845-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/21/2019] [Indexed: 05/24/2023]
Abstract
Lead (Pb(II)) pollution in water poses a serious threat to human health in many parts of the world. In the past decades, research has been aimed at developing efficient and cost-effective methods to address the problem. In this study, dimethyl sulfoxide (DMSO) and potassium acetate (K-Ac) intercalated kaolinite complexes were synthesized and subsequently utilized for Pb(II) removal from water. The intercalation of kaolinite with DMSO was found to be useful for expanding the interlayer space of the clay mineral from 0.72 to 1.12 nm. Kaolinite intercalation with K-Ac (KDK) increased the interlayer space from 1.12 to 1.43 nm. The surface area of KDK was found to be more than threefold higher as compared to natural kaolinite (NK). Batch experimental results revealed that the maximum Pb(II) uptake capacity of KDK was 46.45 mg g-1 which was higher than the capacity of NK (15.52 mg g-1). Reusability studies showed that KDK could be reused for 5 cycles without substantially losing its adsorption capacity. Furthermore, fixed-bed column tests confirmed the suitability of KDK in continuous mode for Pb(II) removal. Successful application of intercalated kaolinite for Pb(II) adsorption in batch and column modes suggests its application in water treatment (especially removal of divalent metals).
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Affiliation(s)
- Ali Maged
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland.
- Geology Department, Faculty of Science, Suez University, P.O. Box 43518, El Salam City, Suez Governorate, Egypt.
| | - Ismael Sayed Ismael
- Geology Department, Faculty of Science, Suez University, P.O. Box 43518, El Salam City, Suez Governorate, Egypt
| | - Sherif Kharbish
- Geology Department, Faculty of Science, Suez University, P.O. Box 43518, El Salam City, Suez Governorate, Egypt
| | - Binoy Sarkar
- Department of Animal and Plant Sciences, The University of Sheffield, Western Bank, Sheffield, S10 2TN, UK
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, UK
| | - Sirpa Peräniemi
- School of Pharmacy, University of Eastern Finland, FI-70211, Kuopio, Finland
| | - Amit Bhatnagar
- Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211, Kuopio, Finland
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Xiong B, Zhang T, Zhao Y, Wen T, Zhang Q, Bao S, Song S. Utilization of carbonate-based tailings to remove Pb(II) from wastewater through mechanical activation. Sci Total Environ 2020; 698:134270. [PMID: 31494418 DOI: 10.1016/j.scitotenv.2019.134270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
The removal of lead in water and disposal of tailings are important environmental issues that need to be addressed urgently. This work explored the feasibility of utilizing the carbonate-based tailings (CBT) for removing lead from the simulated wastewater with the aid of wet stirred ball milling (mechanical activation). Batch experiments were performed to evaluate the influences of various experimental parameters like dosage of CBT, milling balls addition and initial concentration of lead. Under the action of mechanical activated CBT, the lead removal in the solution could reach more than 99% in 2 h, and the lead removal capacity reached 832 mg/g. The results of X-Ray Diffraction (XRD), Fourier Transform infrared spectroscopy (FTIR) and Scanning Electron Microscope-Energy Dispersive Spectra (SEM-EDS) revealed that the calcite (CaCO3) in CBT played a major role in removing lead and the lead in the solution was transferred to the precipitate as cerussite (PbCO3). The mechanical activation promoted the dissolution of calcite, reduced the particle size of CBT and peeled off the lead carbonate precipitation on the surface of calcite, thereby enabling the reaction to be efficiently and thoroughly completed. The lead content in the precipitate after the reaction reached 38.4 wt%, which made it possible for lead recovery.
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Affiliation(s)
- Bowen Xiong
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Tingting Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Yunliang Zhao
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA.
| | - Tong Wen
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Qiwu Zhang
- School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Shenxu Bao
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
| | - Shaoxian Song
- Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China
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Chu Y, Zhang X, Chen W, Wu F, Wang P, Yang Y, Tao S, Wang X. Plasma assisted-synthesis of magnetic TiO 2/SiO 2/Fe 3O 4-polyacrylic acid microsphere and its application for lead removal from water. Sci Total Environ 2019; 681:124-132. [PMID: 31102813 DOI: 10.1016/j.scitotenv.2019.05.064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 05/05/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
Hybrid microsphere of polyacrylic acid (PAA) grafted TiO2/SiO2/Fe3O4 (TSF-PAA) was synthesized via coating polyacrylic acid on the core-shell-shell TiO2/SiO2/Fe3O4 (TSF) structure with the aid of plasma technique. The synthesized microsphere was applied to remove Pb2+ from water. The state-of-the techniques including TEM, FTIP, TGA, and XPS were used to characterize the morphology and the surface functionalities of the microsphere and confirmed that PAA was successfully grafted on TSF surfaces and active functional groups were introduced. A combination of the BET, VSM, and XRD results showed that plasma treatment decreased surface area of TSF by 36%, whereas its magnetic property and crystalline structure were not significantly altered. Both the Pb2+-sorbed magnetic TSF and TSF-PAA can be separated with a magnet from the aqueous phase. The pH and dosage changes of the microspheres exerted an intense influence on their lead removal efficiency. Compared to TSF, the removal capacity of Pb2+ by TSF-PAA was considerably improved from 65% to 95%, attributable to the fact that PAA coating induced by plasma treatment additionally introduced carboxylic and hydroxyl groups to TSF. Their introduction greatly enhanced the interaction between Pb2+ and TSF-PAA relative to that with TSF, which had hydroxyl groups only as supported by XPS analysis.
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Affiliation(s)
- Yangyang Chu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xinyu Zhang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Weixiao Chen
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Fan Wu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Peng Wang
- Water Desalination and Reuse Center, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Yu Yang
- Department of Civil and Environmental Engineering, University of Nevada, Reno, NV 89557, USA
| | - Shu Tao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xilong Wang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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43
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Aziz MA, Chowdhury IR, Mazumder MAJ, Chowdhury S. Highly porous carboxylated activated carbon from jute stick for removal of Pb 2+ from aqueous solution. Environ Sci Pollut Res Int 2019; 26:22656-22669. [PMID: 31168714 DOI: 10.1007/s11356-019-05556-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
Drinking water is a potential source of human exposure to lead (Pb2+), which can induce several health effects upon exposure to low dose for a long period. In particular, the children and young populations are the vulnerable groups. Removal of Pb2+ from drinking water using an inexpensive adsorbent is a challenge. In this research, activated carbon adsorbent was developed using jute stick, an agricultural by-product. Following carboxylic acid functionalization, the jute stick activated carbon (JSAC) was applied for Pb2+ removal from aqueous solution. The carboxylated JSAC (JSAC-COO-) was characterized using several techniques. The surface area of the JSAC-COO- was 615.3 m2/g. The JSAC-COO- was tested for variable concentrations of Pb2+ (10 and 25 mg/L) at different pH (4.0 and 7.0), temperature (15 °C and 27 °C), and contact periods (1, 5, 10, 15, 30, and 60 min). Up to 99.8% removal of Pb2+ was achieved for these concentrations of Pb2+ within 15 min of contact time. The adsorption process followed standard kinetics, and the adsorption capacity was > 25.0 mg Pb2+/g of JSAC-COO-. The JSAC-COO- can be used for fast and easy removal of Pb2+ from aqueous solution, which has the potential for domestic and industrial applications.
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Affiliation(s)
- Md Abdul Aziz
- Center of Research Excellence in Nanotechnology (CENT), King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Imran Rahman Chowdhury
- Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | | | - Shakhawat Chowdhury
- Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.
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44
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Gao R, Fu Q, Hu H, Wang Q, Liu Y, Zhu J. Highly-effective removal of Pb by co-pyrolysis biochar derived from rape straw and orthophosphate. J Hazard Mater 2019; 371:191-197. [PMID: 30851672 DOI: 10.1016/j.jhazmat.2019.02.079] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 01/18/2019] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
When used separately, biochar and orthophosphate are good materials to remove Pb from water, but few studies have been done on Pb removal by biochar-orthophosphate composite. Here biochar-orthophosphate composites were prepared by co-pyrolyzing rape straw with orthophosphate (Ca(H2PO4)2·H2O / KH2PO4) at ratio of 5:1 (W:W), noted as WBC-Ca and WBC-K, respectively, so as to explore the Pb removal capacities and mechanisms of co-pyrolysis biochars. The sorption isotherms of Pb were well fitted with Langmuir model and the maximum sorption capacities of Pb by original biochar, WBC-Ca, and WBC-K were 184.1, 566.3 and 1559 mmol kg-1, respectively. The results of FTIR, XRD, and XPS analyses showed that phosphorus in biochar played an important role to remove Pb by forming lead-precipitates. However, the species of lead-precipitates in three types of Pb-loaded biochars were Pb5(PO4)3Cl, Pb2P2O7, and Pbn/2(PO3)n, individually, and that was because speciation of phosphorus had undergone significant thermochemical transformation during pyrolysis process. Orthophosphate in WBC-Ca was mainly transformed to pyrophosphate, while orthophosphate in WBC-K was transformed to both metaphosphate and pyrophosphate. The present results warrant the promising application of co-pyrolysis biochar derived from rape straw and orthophosphate in removal of Pb from wastewater.
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Affiliation(s)
- Ruili Gao
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qingling Fu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Hongqing Hu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Qian Wang
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yonghong Liu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jun Zhu
- Key Laboratory of Subtropical Agricultural Resource and Environment, Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
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Zhang X, Shi D, Li X, Zhang Y, Wang J, Fan J. Nanoscale dispersing of zero-valent iron on CaCO 3 and their significant synergistic effect in high performance removal of lead. Chemosphere 2019; 224:390-397. [PMID: 30831489 DOI: 10.1016/j.chemosphere.2019.02.139] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 01/14/2019] [Accepted: 02/22/2019] [Indexed: 06/09/2023]
Abstract
Rapid aggregation and deactivation of nanoscale zero-valent iron (nZVI) hinder its application in environmental remediation. In this work, micro-scale CaCO3 is used as a dispersive carrier of nZVI to create a novel composite, CaCO3-supported nZVI (nZVI@CaCO3), through simplified liquid-phase reduction strategy. The morphology analysis shows that CaCO3 exhibits a fagot-like structure, and Fe0 particles are well dispersed on CaCO3 with an average diameter of around 15 nm. The removal of Pb(II) from water by nZVI@CaCO3 is studied, and it is found that the removal capacity of lead is as high as 3828 mg/g, which is much greater than that by neat CaCO3 (2209 mg/g) and bare nZVI (1308 mg/g). Owing to the loading of Fe (50%) in nZVI@CaCO3, a significant synergistic effect is observed between CaCO3 and nZVI in high performance removal of lead. Furthermore, a possible removal mechanism is proposed from a comparative investigation on the surface valence state and nZVI@CaCO3 phase before and after absorption of Pb(II). Considering the advantages of improved dispersibility, easy preparation and remarkable performance, the as-prepared nZVI@CaCO3 has the potential to become a promising remediation material for Pb(II) polluted water.
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Affiliation(s)
- Xiaodi Zhang
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Dongyang Shi
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Xiang Li
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Yajing Zhang
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Jianji Wang
- Henan Key Laboratory of Green Chemistry, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, PR China
| | - Jing Fan
- School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, PR China.
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Kheshtzar I, Ghorbani M, Gatabi MP, Lashkenari MS. Facile synthesis of smartaminosilane modified- SnO 2/porous silica nanocomposite for high efficiency removal of lead ions and bacterial inactivation. J Hazard Mater 2018; 359:19-30. [PMID: 30014911 DOI: 10.1016/j.jhazmat.2018.07.028] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 07/04/2018] [Accepted: 07/06/2018] [Indexed: 06/08/2023]
Abstract
The aim of the present study is to synthesize a new and proficient nanoadsorbent for rapid removal of heavy metals and disinfection of microorganisms. The proposed nanoadsorbent was fabricated using SnO2 nanoparticles as the core, coated with mesoporous silica and further modified with 3-Aminopropyl triethoxysilane to render SnO2/PSi/NH2 nanocomposite. The nanocomposite was characterized using Fourier Transform Infrared (FTIR), X-Ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Nitrogen adsorption-desorption analysis. The potential of the resultant SnO2/PSi/NH2 nanocomposite for the convenient removal of Lead ions in a batch systems was investigated as a function of solution pH, contact time, adsorbent dosage, temperature and metal ion concentration. The adsorption behavior was in good agreement with Sips and Langmuir isotherm models. The maximum adsorption capacity of SnO2/PSi/NH2 was 653.62 mg g-1. Furthermore, the desorption experiments demonstrated that the proposed nanocomposite could be used frequently for at least three consecutive cycles with minor losses in adsorption performance. The bacterial inactivation ability of SnO2/PSi/NH2 toward E-Coli and S. aureus bacteria was also evaluated using disk diffusion and linear cultivation tests, according to which the SnO2/PSi/NH2 nanocomposite possessed exceptional disinfection ability toward both bacteria, specifically S. aureus.
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Affiliation(s)
- Iman Kheshtzar
- Department of Chemical Engineering, Shomal University, Amol, Iran
| | - Mohsen Ghorbani
- Department of Chemical Engineerng, Babol Noshirvani University of Technolgy, Shariati Ave., Babol, 47148-71167, Iran.
| | - Maliheh Pashai Gatabi
- Solid State Physics Department, University of Mazandaran, 4741695447, Babolsar, Iran
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Gabris MA, Jume BH, Rezaali M, Shahabuddin S, Nodeh HR, Saidur R. Novel magnetic graphene oxide functionalized cyanopropyl nanocomposite as an adsorbent for the removal of Pb(II) ions from aqueous media: equilibrium and kinetic studies. Environ Sci Pollut Res Int 2018; 25:27122-27132. [PMID: 30022389 DOI: 10.1007/s11356-018-2749-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 07/11/2018] [Indexed: 06/08/2023]
Abstract
This work presents the synthesis of the novel silica-cyanopropyl functionalized magnetic graphene oxide (MGO/SiO2-CN) hybrid nanomaterial derived by sol-gel method as a cheap efficient magnetic sorbent for the removal of extremely hazardous lead ions from aqueous media. The integration of the magnetic property, the carbon substrate, and the nitrile (-C ≡ N) containing organic grafted silica matrix promoted the adsorption capability against lead ions along with its simple synthesis recovery and low cost. The prepared nanocomposite was comprehensively characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Adsorption of lead was found to be pH dependent because of the charged nature of both analyte and adsorbent surface. Adsorption experiments were conducted under the optimum conditions, and the obtained experimental data from atomic absorption spectroscopy were analyzed using the popular isothermal models namely Langmuir, Freundlich, and Dubinin-Radushkevich isotherms as well as kinetically studied and evaluated for adsorption standard free energy (E). The experimental results have demonstrated the enhanced adsorption capability of the proposed sorbent nanocomposite for lead ion removal with the maximum adsorption capacity of 111.11 mg/g at pH 5.0. The proposed mechanism of lead adsorption was mainly attributed to the complexation of lead positive ions with the grafted -C ≡ N bond. The synergistic effect of the combination of three components (i.e., the magnetic graphene oxide matrix, the triple bond containing organic moiety, and the inorganic porous silica framework) excelled the adsorption capability and proved to be a good candidate as adsorbent for the removal of lead ions.
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Affiliation(s)
- Mohammad Ali Gabris
- Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran
| | - Binta Hadi Jume
- Department of chemistry, Preparatory School, Aljoup University, Aljoup Region, KSA, Sakaka, 72388, Saudi Arabia
| | - Mostafa Rezaali
- Department of Civil and Environmental Engineering, Qom University of Technology, Qom, Iran
| | - Syed Shahabuddin
- Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Petaling Jaya, Selangor Darul Ehsan, Malaysia.
| | - Hamid Rashidi Nodeh
- Department of Food science and Technology, Faculty of Food Industry and Agriculture, Standard Research Institute (SRI), Karaj, Iran.
| | - Rahman Saidur
- Research Centre for Nano-Materials and Energy Technology (RCNMET), School of Science and Technology, Sunway University, No. 5, Jalan Universiti, Bandar Sunway, 47500, Petaling Jaya, Selangor Darul Ehsan, Malaysia
- Department of Engineering, Lancaster University, Lancaster, LA14YW, UK
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48
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Chen YD, Ho SH, Wang D, Wei ZS, Chang JS, Ren NQ. Lead removal by a magnetic biochar derived from persulfate-ZVI treated sludge together with one-pot pyrolysis. Bioresour Technol 2018; 247:463-470. [PMID: 28965077 DOI: 10.1016/j.biortech.2017.09.125] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 09/17/2017] [Accepted: 09/18/2017] [Indexed: 06/07/2023]
Abstract
In this study, a novel method to treat the persulfate-ZVI dewatered WAS by producing a magnetic biochar as an environmentally friendly biosorbent (nZVI-WSBC) to remove heavy metals (HMs) from wastewaters was proposed. The nZVI-WSBC exhibited good adsorption property of Pb2+ and the adsorption isotherm data were fitted well to Langmuir isotherm. Corresponding reaction kinetics fitted well with the pseudo second-order adsorption model. Notably, nZVI-WSBC was successfully used for efficient removal of HMs from real. This study comprehensively demonstrates the mechanisms between Pb2+ and nZVI-WSBC surfaces, providing a breakthrough in making a sustainable biosorbent from the dewatered iron-containing WAS.
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Affiliation(s)
- Yi-di Chen
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Dawei Wang
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23219, USA
| | - Zong-Su Wei
- Wolfson Faculty of Chemical Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 32000, Israel
| | - Jo-Shu Chang
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, PR China
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Tang J, Chen C, Chen L, Daroch M, Cui Y. Effects of pH, initial Pb 2+ concentration, and polyculture on lead remediation by three duckweed species. Environ Sci Pollut Res Int 2017; 24:23864-23871. [PMID: 28868570 DOI: 10.1007/s11356-017-0004-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
Various geographical duckweed isolates have been developed for phytoremediation of lead. The Pb2+ removal efficiency of Lemna aequinoctialis, Landoltia punctata, and Spirodela polyrhiza was investigated in monoculture and polyculture at different levels of pH and initial Pb2+ concentrations. L. aequinoctialis was not sensitive to the tested pH but significantly affected by initial Pb2+ concentration, whereas synergistic effect of pH and initial Pb2+ concentration on removal efficiency of L. punctata and S. polyrhiza was found. Although the majority of polycultures showed median removal efficiency as compared to respective monocultures, some of the polycultures achieved higher Pb2+ removal efficiencies and can promote population to remove Pb2+. Besides, the three duckweed strains could be potential candidates for Pb2+ remediation as compared to previous reports. Conclusively, this study provides useful references for future large-scale duckweed phytoremediation.
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Affiliation(s)
- Jie Tang
- School of Pharmacy and Bioengineering, Chengdu University, Chengdu, 610106, China
| | - Chunxia Chen
- College of Life Science, Hunan University of Arts and Science, Changde, 415000, China
| | - Lei Chen
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Maurycy Daroch
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Yan Cui
- School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen, 518055, China.
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50
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Wang L, Wang X, Li J, Feng X, Wang Y. Silica Aerogel-supported Hydrozincite and Carbonate-intercalated Hydrotalcite for High-efficiency Removal of Pb(II) Ions by Precipitation Transformation Reactions. Nanoscale Res Lett 2017; 12:549. [PMID: 28948484 PMCID: PMC5612910 DOI: 10.1186/s11671-017-2323-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
In this work, hydrozincite and Zn/Al-CO32- hydrotalcite supported on silica aerogel were prepared via a simple and economical process and used as adsorbents for Pb(II) removal. The supported hydrozincite and Zn/Al-CO32- hydrotalcite possess ultra-thin thickness, high surface area, and weak crystallinity. In the batch Pb(II) adsorption experiments, the adsorbents with higher Zn(II) contents showed higher Pb(II) adsorption capacities, and the adsorption data fitted well with the Langmuir isotherm model and pseudo-second-order kinetic model, indicating a mechanism of surface chemisorption. The adsorption capacities calculated based Langmuir isotherm model are 684.9 mg/g and 555.6 mg/g for the supported hydrozincite and Zn/Al-CO32- hydrotalcite, respectively, higher than the adsorption capacities of other hydrotalcite-based adsorbents and most of other inorganic adsorbents reported previously. The XRD diffraction peaks of hydrozincite and Zn/Al-CO32- hydrotalcite disappeared after the adsorption, and the Pb(II) species were uniformly dispersed in the adsorbents in form of Pb3(CO3)2(OH)2 proven by TEM, EDS mapping and XRD analysis, demonstrating the nature of the adsorption is the precipitation conversion of hydrozincite or Zn/Al-CO32- hydrotalcite into Pb3(CO3)2(OH)2. These results demonstrate the synergic Pb(II) removal effect of the CO32- and OH- derived from hydrozincite and Zn/Al-CO32- hydrotalcite together with their ultra-thin thickness and high surface area contribute the excellent properties of the adsorbents.
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Affiliation(s)
- Lijun Wang
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, People's Republic of China.
| | - Xiaoxia Wang
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Jianfa Li
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Xiaolan Feng
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, People's Republic of China
| | - Yusen Wang
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing, 312000, People's Republic of China
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