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Hu H, Yang Y, Zhou G, Wang N, Gu H. Hydrothermal chemical modification of red mud for efficient adsorption of methylene blue. ENVIRONMENTAL TECHNOLOGY 2024:1-14. [PMID: 39150860 DOI: 10.1080/09593330.2024.2391078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Accepted: 08/02/2024] [Indexed: 08/18/2024]
Abstract
Red mud (RM) is the industrial solid waste produced after alumina extraction from bauxite, and most RM is directly discharged to the landfill yards without any treatment. In this study, modified red mud (MRM) was synthesized by a hydrothermal chemical modification method as an efficient adsorbent for methylene blue (MB) removal. The prepared MRM was characterized by X-ray fluorescence spectroscopy, X-ray diffraction, scanning electron microscope, transmission electron microscope, and Fourier transform infrared spectrometer. The effects of reaction time, initial MB concentrations, MRM dosage, temperature, and system pH were investigated in the MB batch adsorption experiments. The results showed that the modification method increased the specific surface area of RM material from 16.72 to 414.47 m2/g. The maximum adsorption capacity of MRM for MB was 280.18 mg/g under the conditions of initial MB concentration of 1000 mg/L, reaction time of 300 min, temperature of 25 ℃, and natural pH of 6.06. Meanwhile, the adsorption kinetics and equilibrium isotherms were demonstrated to fit well with the pseudo-second-order kinetic model and Temkin isotherm, respectively. This study provides a new method for the valorization of RM and demonstrates that MRM can be used as a low cost and environmentally friendly potential adsorbent for the removal of MB from wastewater.
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Affiliation(s)
- Haiyi Hu
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yongqiong Yang
- School of Geography and Environmental Science, Guizhou Normal University, Guiyang, People's Republic of China
| | - Guiyong Zhou
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
- University of the Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ning Wang
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
| | - Hannian Gu
- Key Laboratory of High-Temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, People's Republic of China
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2
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Fouda-Mbanga BG, Pillay K, Tywabi-Ngeva Z. Novel development of zinc oxide-coated carbon nanoparticles from pineapple leaves using sol gel method for optimal adsorption of Cu 2+ and reuse in latent fingerprint application. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:38801-38820. [PMID: 36811786 PMCID: PMC11186909 DOI: 10.1007/s11356-023-25474-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
This study underlines a latest approach of preparing nitrogen carbon nanoparticles fused on zinc oxide nanoparticle nanocomposite (N-CNPs/ZnONP nanocomposite) for the uptake of copper ions (Cu2+) from wastewater using a sol gel method. The metal loaded adsorbent was then applied in the latent fingerprint application. N-CNPs/ZnONP nanocomposite proved to be a good sorbent for the optimal adsorption of Cu2+ at pH 8 and 1.0 g/L dosage. Langmuir isotherm best fitted the process with the maximum adsorption capacity of 285.71 mg/g that was superior to most values reported in other studies for the removal of Cu2+. At 25 °C, the adsorption was spontaneous and endothermic. Furthermore, Cu2+-N-CNPs/ZnONP nanocomposite revealed to be sensitive and selective for latent fingerprint (LFP) identification on a variety of porous surfaces. As a result, it is an excellent identifying chemical for latent fingerprint recognition in forensic science.
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Affiliation(s)
| | - Kriveshini Pillay
- Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus, Johannesburg, 2028, South Africa
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3
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Ulatowska J, Szewczuk-Karpisz K, Polowczyk I. Evaluation of the Effect of Polyethylenimine on Boron Adsorption by Soil Minerals. Chemphyschem 2024; 25:e202400055. [PMID: 38415970 DOI: 10.1002/cphc.202400055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 02/15/2024] [Accepted: 02/26/2024] [Indexed: 02/29/2024]
Abstract
The removal of hazardous ions from water is crucial for safeguarding both the environment and human health. Soil minerals, integral components of soil, play a vital role as adsorbents for various contaminants, including heavy metal ions, organic dyes, and detergents. This study investigates the interaction between boron ions and soil minerals (gibbsite, kaolinite, and montmorillonite) in the presence of polyethylenimine (PEI). The minerals underwent characterization based on specific surface area, particle size distribution, zeta potential, and the presence of functional groups. The influence of PEI addition on the stability of the soil mineral suspension was evaluated by turbidimetry. Mineral-boron and mineral-boron-PEI interactions were explored under varying conditions, including pH, initial boron concentration, and mineral quantity, with all adsorption experiments conducted over 24 hours. Using the Langmuir isotherm, the maximum adsorption capacity of the studied minerals was determined for boron both without and in the presence of PEI. For gibbsite, kaolinite and montmorillonite, it was 30.63, 24.55 and 26.62 mg g-1, respectively, while in the presence of PEI, it increased to 33.11, 26.61 and 45.47 mg g-1, respectively. The addition of PEI enhanced boron adsorption from aqueous solutions, increasing the removal efficiency from 65 % to about 80 %.
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Affiliation(s)
- Justyna Ulatowska
- Department of Process Engineering and Technology of Polymers and Carbon Materials, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego Street 27, 50-370, Wrocław, Poland
| | - Katarzyna Szewczuk-Karpisz
- Department of Process Engineering and Technology of Polymers and Carbon Materials, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego Street 27, 50-370, Wrocław, Poland
| | - Izabela Polowczyk
- Department of Process Engineering and Technology of Polymers and Carbon Materials, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego Street 27, 50-370, Wrocław, Poland
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Adeoye JB, Balogun DO, Etemire OJ, Ezeh PN, Tan YH, Mubarak NM. Rapid adsorptive removal of eosin yellow and methyl orange using zeolite Y. Sci Rep 2023; 13:21373. [PMID: 38049520 PMCID: PMC10695964 DOI: 10.1038/s41598-023-48675-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023] Open
Abstract
In this study, zeolite Y was synthesised using a novel method. The heat generated from the reaction of H2SO4 with metakaolin was used as a heat source instead of applying external heat for the dealuminated process. The synthesised zeolite Y produced was analysed by scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier-infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDS) and Brunauer-Emmett-Teller (BET). Zeolite Y synthesis was mesoporous because of its pore diameter (30.53 nm), as shown in the BET results. Surface area and pore size decrease after adsorption due to dye deposition on the adsorbent's surface. FTIR has bonds like O-H, C-H, -CH3, and -COOH responsible for adsorption. The maximum adsorption capacity of eosin yellow (EY) and methyl orange (MO) on to zeolite Y by the Langmuir isotherm was 52.91 mg/g and 20.62 mg/g respectively, at pH 2.5 and 8 for EY and MO dye. The batch adsorption studies were conducted, and the influence of different parameters (i.e., adsorbent dose, adsorption time, initial dye concentration, pH and temperature) was investigated. Experimental data were analysed by two linear model equations (Langmuir and Freundlich isotherms), and it was found that the Langmuir isotherm model best describes the adsorption data for methyl orange and Freundlich isotherm for eosin yellow, respectively. Adsorption rate constants were determined using linear pseudo-first-order and pseudo-second-order. The results showed that MO and EY dye adsorption onto zeolite Y followed a pseudo-second-order kinetic model. Thermodynamic studies show that adsorption was an exothermic reaction (enthalpy < 0) and feasible ([Formula: see text]) at various temperatures under investigation.
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Affiliation(s)
- John Busayo Adeoye
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - David Ololade Balogun
- Chemical Engineering Department, Faculty of Engineering, Landmark University, P.M.B 1001, Omu-Aran, Kwara, Nigeria
| | | | - Princewill Nnaneme Ezeh
- Chemical Engineering Department, Faculty of Engineering, Landmark University, P.M.B 1001, Omu-Aran, Kwara, Nigeria
| | - Yie Hua Tan
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia.
| | - Nabisab Mujawar Mubarak
- Petroleum and Chemical Engineering, Faculty of Engineering, Universiti Teknologi Brunei, Bandar Seri Begawan, BE1410, Brunei Darussalam.
- Department of Biosciences, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India.
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Venkatraman Y, Arunkumar P, Kumar NS, Osman AI, Muthiah M, Al-Fatesh AS, Koduru JR. Exploring Modified Rice Straw Biochar as a Sustainable Solution for Simultaneous Cr(VI) and Pb(II) Removal from Wastewater: Characterization, Mechanism Insights, and Application Feasibility. ACS OMEGA 2023; 8:38130-38147. [PMID: 37867658 PMCID: PMC10586276 DOI: 10.1021/acsomega.3c04271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/12/2023] [Indexed: 10/24/2023]
Abstract
This study aimed to investigate the efficacy of a rice straw biosorbent in batch adsorption for the removal of chromium (Cr(VI)) and lead (Pb(II)) heavy-metal ions from wastewater. The biosorbent was chemically synthesized and activated by using concentrated sulfuric acid. The produced biosorbent was then characterized by using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) analyses, which provided insights into surface morphology and functional groups. The study examined the effects of pH, rice straw dose, ion concentration, and contact time on metal ion adsorption. Optimal conditions for efficient removal (95.57% for Cr(VI) and 85.68% for Pb(II)) were achieved at a pH of 2.0, a biosorbent dose of 2 g/L, an initial concentration of 20 mg/L, and a contact time of 50 min in synthetic solutions. The isotherms and kinetics model fitting results found that both metal ion adsorption processes were multilayer on the hetero surface of rice straw biosorbent via rate diffusion kinetics. Thermodynamic investigations were conducted, and the results strongly indicate that the adsorption process is endothermic and spontaneous. Notably, the results indicated that the highest desorption rate was achieved by adding 0.3 N HCl to the system.
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Affiliation(s)
- Yogeshwaran Venkatraman
- Department
of Civil Engineering, Sri Krishna College
of Engineering and Technology, Coimbatore 641008, India
| | - Priya Arunkumar
- Department
of Chemical Engineering, KPR Institute of
Engineering and Technology, Coimbatore 641047, India
- Project
Prioritization, Monitoring & Evaluation and Knowledge Management
Unit, ICAR Indian Institute of Soil &
Water Conservation (ICAR-IISWC), Dehradun 248195, India
| | - Nadavala Siva Kumar
- Department
of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Ahmed I. Osman
- School
of Chemistry and Chemical Engineering, Queen’s
University Belfast, Belfast BT9 5AG, Northern Ireland U.K.
| | - Muruganandam Muthiah
- Project
Prioritization, Monitoring & Evaluation and Knowledge Management
Unit, ICAR Indian Institute of Soil &
Water Conservation (ICAR-IISWC), Dehradun 248195, India
| | - Ahmed S. Al-Fatesh
- Department
of Chemical Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
| | - Janardhan Reddy Koduru
- Department
of Environmental Engineering, Kwangwoon
University, Seoul 01897, Republic of Korea
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Sočo E, Domoń A, Papciak D, Michel MM, Pająk D, Cieniek B, Azizi M. Characteristics of Adsorption/Desorption Process on Dolomite Adsorbent in the Copper(II) Removal from Aqueous Solutions. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4648. [PMID: 37444961 DOI: 10.3390/ma16134648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/25/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
The removal of hazardous heavy metals that have been released into the environment due to industrial activities has become an important issue in recent years. The presented study concerned the removal of copper(II) ions from aqueous solutions using dolomites. Dolomite is a very attractive adsorbent due to its wide availability, low cost, good adsorption, and environmental compatibility. The paper describes the properties of D-I and D-II dolomites from two different open-cast mines in Poland. The properties of natural adsorbents were determined based on point of zero charges (PZC), elemental analysis of the adsorbent composition, FT-IR, XRD, and SEM spectra analysis. Depending on the initial concentration of the solution used, the adsorption efficiency of copper(II) ions was 58-80% for D-I and 80-97% for D-II. The adsorption mechanism in the case of D-II dolomite was mainly based on ion exchange, while chemisorption dominated the D-I dolomite surface. Considering the possibility of the regeneration and reuse of the adsorbent, dolomite D-II is a better material (the desorption efficiency of copper(II) ions was 58-80%). The adsorption behavior of dolomites has been described using six adsorption isotherms. The best fit was obtained for the Redlich-Peterson, Jovanović, and Langmuir isotherms, indicating that monolayer adsorption occurred. The maximum adsorption capacity for copper(II) was 378 mg/g of D-I and 308 mg/g of D-II.
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Affiliation(s)
- Eleonora Sočo
- Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Andżelika Domoń
- Department of Water Purification and Protection, Faculty of Civil, Environmental Engineering and Architecture, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Dorota Papciak
- Department of Water Purification and Protection, Faculty of Civil, Environmental Engineering and Architecture, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Magdalena M Michel
- Institute of Environmental Engineering, Warsaw University of Life Sciences-SGGW, 02-787 Warsaw, Poland
| | - Dariusz Pająk
- Department of Casting and Welding, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, 35-959 Rzeszow, Poland
| | - Bogumił Cieniek
- Institute of Materials Engineering, College of Natural Sciences, University of Rzeszow, Pigonia 1, 35-310 Rzeszow, Poland
| | - Mostafa Azizi
- Institute of Environmental Engineering, Warsaw University of Life Sciences-SGGW, 02-787 Warsaw, Poland
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Hussain M, Hussaini SS, Shariq M, Alzahrani H, Alholaisi AA, Alharbi SH, Alsharif SA, Al-Gethami W, Ali SK, Alaghaz ANMA, Siddiqui MA, Seku K. Enhancing Cu 2+ Ion Removal: An Innovative Approach Utilizing Modified Frankincense Gum Combined with Multiwalled Carbon Tubes and Iron Oxide Nanoparticles as Adsorbent. Molecules 2023; 28:4494. [PMID: 37298968 PMCID: PMC10254508 DOI: 10.3390/molecules28114494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 05/25/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
Aquatic pollution, which includes organic debris and heavy metals, is a severe issue for living things. Copper pollution is hazardous to people, and there is a need to develop effective methods for eliminating it from the environment. To address this issue, a novel adsorbent composed of frankincense-modified multi-walled carbon nanotubes (Fr-MMWCNTs) and Fe3O4 [Fr-MWCNT-Fe3O4] was created and subjected to characterization. Batch adsorption tests showed that Fr-MWCNT-Fe3O4 had a maximum adsorption capacity of 250 mg/g at 308 K and could efficiently remove Cu2+ ions over a pH range of 6 to 8. The adsorption process followed the pseudo-second-order and Langmuir models, and its thermodynamics were identified as endothermic. Functional groups on the surface of modified MWCNTs improved their adsorption capacity, and a rise in temperature increased the adsorption efficiency. These results highlight the Fr-MWCNT-Fe3O4 composites' potential as an efficient adsorbent for removing Cu2+ ions from untreated natural water sources.
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Affiliation(s)
- Mushtaq Hussain
- Engineering Department, College of Engineering and Technology, University of Technology and Applied Sciences, Shinas 324, Oman
| | - Syed Sulaiman Hussaini
- Engineering Department, College of Engineering and Technology, University of Technology and Applied Sciences, Shinas 324, Oman
| | - Mohammad Shariq
- Department of Physics, College of Science, Jazan University, Jazan 45142, Saudi Arabia
| | - Hanan Alzahrani
- Department of Physics, College of Science, Jazan University, Jazan 45142, Saudi Arabia
| | - Arafa A. Alholaisi
- Department of Physics, Al-Qunfudah University College, Umm Al-Qura University, Makkah 24382, Saudi Arabia
| | - Samar H. Alharbi
- Department of Physics, Al-Qunfudah University College, Umm Al-Qura University, Makkah 24382, Saudi Arabia
| | - Sirajah A. Alsharif
- Department of Physics, Al-Qunfudah University College, Umm Al-Qura University, Makkah 24382, Saudi Arabia
| | - Wafa Al-Gethami
- Chemistry Department, Faculty of Science, Taif University, Al-Hawiah, Taif City P.O. Box 11099, Saudi Arabia
| | - Syed Kashif Ali
- Department of Chemistry, College of Science, Jazan University, Jazan 45142, Saudi Arabia
| | | | - Mohd Asim Siddiqui
- Engineering Department, College of Engineering and Technology, University of Technology and Applied Sciences, Shinas 324, Oman
| | - Kondaiah Seku
- Engineering Department, College of Engineering and Technology, University of Technology and Applied Sciences, Shinas 324, Oman
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Hidayat E, Yoshino T, Yonemura S, Mitoma Y, Harada H. A Carbonized Zeolite/Chitosan Composite as an Adsorbent for Copper (II) and Chromium (VI) Removal from Water. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16062532. [PMID: 36984412 PMCID: PMC10057389 DOI: 10.3390/ma16062532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 06/12/2023]
Abstract
To address Cu(II) and Cr(VI) water pollution, a carbonized zeolite/chitosan (C-ZLCH) composite adsorbent was produced via pyrolysis at 500 °C for two hours. C-ZLCH was characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and zeta potential measurements. The batch experiments were performed by varying the initial pH, concentration, and contact time. The optimal pH values for Cu(II) and Cr(VI) were 8.1 and 9.6, respectively. The highest adsorption capacities for Cu(II) and Cr(VI) were 111.35 mg/g at 60 min and 104.75 mg/g at 90 min, respectively. The effects of chemicals such as sodium (Na+), glucose, ammonium (NH4+), and acid red 88 (AR88) were also studied. Statistical analysis showed that sodium had no significant effect on Cu(II) removal, in contrast to Cr(VI) removal. However, there was a significant effect of the presence of glucose, ammonium, and AR88 on both Cu(II) and Cr(VI) removal. The adsorption isotherm and kinetic models were fitted using Langmuir and pseudo-second-order models for Cu(II) and Cr(VI), respectively.
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Affiliation(s)
- Endar Hidayat
- Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, Japan; (E.H.); (T.Y.); (S.Y.); (Y.M.)
- Department of Life and Environmental Science, Prefectural University of Hiroshima, Shobara 727-0023, Japan
| | - Tomoyuki Yoshino
- Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, Japan; (E.H.); (T.Y.); (S.Y.); (Y.M.)
- Department of Life and Environmental Science, Prefectural University of Hiroshima, Shobara 727-0023, Japan
| | - Seiichiro Yonemura
- Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, Japan; (E.H.); (T.Y.); (S.Y.); (Y.M.)
- Department of Life and Environmental Science, Prefectural University of Hiroshima, Shobara 727-0023, Japan
| | - Yoshiharu Mitoma
- Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, Japan; (E.H.); (T.Y.); (S.Y.); (Y.M.)
- Department of Life and Environmental Science, Prefectural University of Hiroshima, Shobara 727-0023, Japan
| | - Hiroyuki Harada
- Graduate School of Comprehensive and Scientific Research, Prefectural University of Hiroshima, Shobara 727-0023, Japan; (E.H.); (T.Y.); (S.Y.); (Y.M.)
- Department of Life and Environmental Science, Prefectural University of Hiroshima, Shobara 727-0023, Japan
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Bate B, Cao J, Yang Y, Cao J, Zhang C, Zhang S. Investigation of Cu Adsorption and Migration with Spectral Induced Polarization in Activated Carbon. TOXICS 2023; 11:221. [PMID: 36976986 PMCID: PMC10057908 DOI: 10.3390/toxics11030221] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
In this paper, the adsorption process of copper ions on activated carbon (AC) was simulated in a column test. It was deduced that it is consistent with the pseudo-second-order model. Cation exchange was observed to be the major mechanism of Cu-AC interactions through scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) measurements. Adsorption isotherms were fitted well using the Freundlich model. Adsorption thermodynamics at 298, 308, 318 K demonstrated that the adsorption process is spontaneous and endothermic. Spectral induced polarization (SIP) technique was used to monitor the adsorption process, and the double Cole-Cole model was used to analyze the SIP results. The normalized chargeability was proportional to the adsorbed copper content. Two measured relaxation times from the SIP testing were converted into the average pore sizes of 2, 0.8, 0.6, 100-110, 80-90, and 53-60 µm by the Schwartz equation, which are consistent with the measured pore sizes from both mercury intrusion porosimetry and scanning electron microscopy (SEM). The reduction in the pore sizes by SIP during the flow-through tests suggested that the adsorbed Cu2+ gradually migrated into small pores as with continued permeation of the influent. These results showcased the feasibility of using SIP technique in engineering practice involving the monitoring of copper contamination in land near a mine waste dump or in adjacent permeable reactive barriers.
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Affiliation(s)
- Bate Bate
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Jingjing Cao
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Yixin Yang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
| | - Junnan Cao
- Department of Civil Engineering and Construction, Georgia Southern University, Statesboro, GA 30458, USA
| | - Chi Zhang
- Department of Meteorology and Geophysics, University of Vienna, Josef-Holaubek-Platz 2 (UZA II), 1010 Vienna, Austria
| | - Shuai Zhang
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China
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10
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Thongkon N, Sutthamee C. Application of PAR Modified Fish Scales for Adsorption and Colorimetric Detection of Heavy Metal Ions in Water Samples. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY, TRANSACTIONS A: SCIENCE 2022. [DOI: 10.1007/s40995-022-01403-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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11
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Teshager FM, Habtu NG, Mequanint K. A systematic study of cellulose-reactive anionic dye removal using a sustainable bioadsorbent. CHEMOSPHERE 2022; 303:135024. [PMID: 35618062 DOI: 10.1016/j.chemosphere.2022.135024] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 05/01/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Cellulose-reactive anionic dyes are one of the dominant colorants used in textile finishing. Unfortunately, they also produce large quantities of wastewater that must be treated before discharge, demanding low-cost and sustainable adsorbents that can easily be implemented, especially for developing countries with thriving cotton-based textile sectors. In this study, a high specific surface area (670 m2/g) water hyacinth root powder (WHRP) bioadsorbent that is neither carbonized nor activated was prepared to remove cellulose-reactive anionic blue dye from an aqueous solution. The effect of adsorption pH (pH = 2-8), adsorbent dose (1 g/L-6 g/L), dye concentration (50 mg/L-500 mg/L), adsorbent particle size (50 μm-1000 μm), mixing speed (100 rpm -200 rpm), and adsorption temperatures (22 °C-60 °C) were systematically studied. It was found that the protonation of lignin polyphenols in WHRP at pH = 2 was responsible for the observed high (∼99%) adsorptive removal of reactive blue dye. The maximum equilibrium adsorption capacity was 128.8 mg/g when 1 g/L WHRP and 500 mg/L dye concentration were used. In addition, adsorption isotherms, kinetic models, and adsorption thermodynamics were investigated. Increasing adsorbent dose, decreasing adsorbent particle size, increasing mixing speed, and lowering temperature favored the adsorption of reactive dye to WHRP adsorbent. The batch adsorption data were best fitted with both Langmuir and Temkin models, especially at 22 °C, while the adsorption kinetic behavior was described best using pseudo-second-order kinetics. Adsorption of cellulose-reactive blue dye to WHRP was spontaneous as characterized by the negative Gibbs energy (-11 kJ/mol to -24 kJ/mol) and exothermic with negative enthalpy (-13 kJ/mol to -23 kJ/mol). The overall adsorption process was controlled by more than one mechanism since the intraparticle diffusion was not the only rate-limiting step under our experimental conditions. Taken together, the abundantly available and sustainable WHRP is an efficient adsorbent that could be scaled up for treating cellulose-reactive dye-contaminated water.
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Affiliation(s)
- Fitfety M Teshager
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Ethiopia
| | - Nigus G Habtu
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, Bahir Dar University, Ethiopia
| | - Kibret Mequanint
- Department of Chemical and Biochemical Engineering, University of Western Ontario, London, Ontario, N6A5B9, Canada.
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Mokokwe G, Letshwenyo MW. Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed - bed column studies. Heliyon 2022; 8:e09963. [PMID: 35874057 PMCID: PMC9304740 DOI: 10.1016/j.heliyon.2022.e09963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/09/2022] [Accepted: 07/12/2022] [Indexed: 11/10/2022] Open
Abstract
The adsorption of copper, iron and nickel ions from an aqueous solution using Makoro granite clay brick waste through batch and fixed – bed column modes was investigated. The adsorbent was characterised using X-Ray Fluorescence, X-Ray Diffraction (XRD), Thermogravimetric Analysis, and Scanning Electron Microscopy (SEM). XRD results revealed crystalline peaks of Quartz (51.28 %) and mullite (23.40%) in fresh and loaded adsorbent with unnotable changes before and after adsorption. SEM images indicate the presence of micro pores and irregularly distributed surfaces. Batch kinetic maximum adsorption capacities for iron, copper, and nickel are 7.60, 6.70 and 6.20 mg g−1 media respectively with 60 min as the optimum time. The maximum adsorption capacities at adsorbent dosage of 5 g L−1 were 10.0, 7.60 and 7.20 mg L−1 for iron, copper and nickel ions. The corresponding adsorption capabilities from the fixed-bed column reactor were 2.23, 2.22 and 0.74 mg g−1 media respectively. The thermodynamics parameters of enthalpy change (ΔH) were 5.21, 9.32 and 5.22 kJ mol−1 respectively for Copper, iron and nickel ions and the corresponding entropy change (ΔS) were -0.04, -0.05 and -0.03 kJmol−1K−1respectively and the process being non-spontaneous and exothermic. Thomas and Yoon-Nelson models yielded similar low coefficient of determination (R2) values (0.06 and 0.07) for copper and iron ions. Further investigations such as the use of real wastewater, competition of anions and further media characterisation and modifications are recommended.
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Affiliation(s)
- Gobusaone Mokokwe
- Botswana International University of Science and Technology, Faculty of Engineering and Technology, Botswana.,Department of Civil and Environmental Engineering, Private Bag 16, Palapye, Botswana
| | - Moatlhodi Wise Letshwenyo
- Botswana International University of Science and Technology, Faculty of Engineering and Technology, Botswana.,Department of Civil and Environmental Engineering, Private Bag 16, Palapye, Botswana
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Investigation of the Attenuation and Release of Cu2+ Ions by Polymer-Treated Tailings. MINERALS 2022. [DOI: 10.3390/min12070846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study investigated the attenuation and release behaviour of copper ions using a standard kaolin-silt slurry as the synthetic tailings in a high solids/high salinity application before and after inline flocculation. A homogenous, synthetic tailings slurry was prepared in a 0.6 M NaCl solution and treated in a low-shear mixer by adding Magnafloc® 336 flocculant. Following the evaluation of morphological properties of both the untreated (UT) and polymer-treated tailings (PT), identical equilibrium tests were performed via the bottle-point method constant concentration technique. The maximum copper ions uptake capacity of polymer-treated tailings was 25% more than the untreated slurry at the equilibrium state in a chemisorption process in which the ions had the capability of binding onto one location on the sorbent, which could be influencing other binding sites on the same sorbent. Polymer treatment resulted in a highly porous structure that exhibited an increased capacity to adsorb and retain copper ions compared to the UT materials. This behaviour indicates the strong binding between the copper ions and active site of the treated tailings particles with greater capability of this material for preserving heavy metal ions within their structure across a wide pH range (2–10) compared to the UT materials. The results advance the fundamental understanding of how inline flocculation can considerably improve the sorption capacity of high solids/high salinity tailings favouring potential long-term rehabilitation purposes at mine closure and the role of sorption and desorption of heavy metal ions’ behaviour play to achieve this goal.
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Synthesis and Characterization of Activated Carbon from Agrowastes for the Removal of Acetic Acid from an Aqueous Solution. ADSORPT SCI TECHNOL 2022. [DOI: 10.1155/2022/7701128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, activated carbons prepared from agrowastes by chemical activation were used to remove acetic acid from an aqueous solution through a batch process. The prepared adsorbents were characterized by SEM, XRD, FT-IR, and point of zero charge (pHpzc). The effects of adsorbent dosage, initial concentration, and contact time were considered. Equilibrium data was tested using Langmuir, Freundlich, Temkin, and Frenkel–Halsey–Hill models. The degree of adsorption of acetic acid increased for both adsorbents as contact time, and adsorbent dosage and initial concentration were increased. The adsorption data were described well by the (Freundlich=Frenkel–Halsey–Hill) models with the highest regression coefficient of
and
for Rice Husk Activated Carbon (RH-AC) and Potato Peels Activated Carbon (PP-AC), respectively. This suggests a multilayer through the existence of a heterogeneous pore distribution in the adsorbent surface. Kinetic data agreed well with pseudosecond-order (
and
) RH-AC and PP-AC, correspondingly. This indicates that the adsorption process was chemisorption in nature. The regeneration studies showed that the adsorbents prepared could be renewed and reused before losing their adsorbing affinity for acetic acid.
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15
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Synthesis and Characterization of Activated Carbons Prepared from Agro-Wastes by Chemical Activation. J CHEM-NY 2022. [DOI: 10.1155/2022/9975444] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In this present study, activated carbons were prepared from rice husks and potato peels by chemical activation with 40% phosphoric acid (H3PO4). The effects of carbonization temperature and impregnation ratio were investigated with a continuous activation period. Physicochemical characteristics such as surface morphology, surface charge, and surface functional groups were assessed. According to X-ray diffraction measurements, the results showed that the activated carbons had identical pHpzc (6.8) and that the activated carbons generated were carbonaceous. The existence of hydroxyl, carbonyl, amines, aromatic, and other functional groups, which are excellent for adsorption, was revealed by surface chemistry studies. Micrographs taken with a scanning electron microscope indicated wide opening pores with a larger mesoporous surface area and many linked pores. Rice husk activated carbon outperformed potato peel activated carbon in laboratory tests. The research has shown that the agro-wastes employed in the study are possible precursors for making locally activated carbons at a low cost, thus resolving the problem of agro-waste disposal.
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Bioreduction of iron nitrate hexahydrate by Roselle hibiscus fruit extract: applications. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-02032-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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17
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Afolabi HK, Nasef MM, Nordin NAHM, Ting TM, Harun NY, Saeed AAH. Isotherms, kinetics, and thermodynamics of boron adsorption on fibrous polymeric chelator containing glycidol moiety optimized with response surface method. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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18
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Brahimi A, Mellah A, Hanini S. Adsorption of strontium (II) ions from aqueous solution onto bottom ash of expired drug incineration. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-08054-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Sulaiman S, Azis RS, Ismail I, Man HC, Yusof KFM, Abba MU, Katibi KK. Adsorptive Removal of Copper (II) Ions from Aqueous Solution Using a Magnetite Nano-Adsorbent from Mill Scale Waste: Synthesis, Characterization, Adsorption and Kinetic Modelling Studies. NANOSCALE RESEARCH LETTERS 2021; 16:168. [PMID: 34837537 PMCID: PMC8627547 DOI: 10.1186/s11671-021-03622-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 11/07/2021] [Indexed: 05/12/2023]
Abstract
In this study, magnetite nano-adsorbent (MNA) was extracted from mill scale waste products, synthesized and applied to eliminate Cu2+ from an aqueous solution. Mill scale waste product was ground using conventional milling and impacted using high-energy ball milling (HEBM) for varying 3, 5, and 7 milling hours. In this regard, the prepared MNA was investigated using X-ray diffraction (XRD), high-resolution transmission electron microscope (HRTEM), field emission scanning electron microscopy-energy-dispersive X-ray spectroscopy (FESEM-EDS), UV-Vis spectroscopy, Fourier-transform infrared (FTIR), Brunauer-Emmett-Teller (BET) and zeta potential. The resultant MNA-7 h milling time displayed a crystalline structure with irregular shapes of 11.23 nm, specific surface area of 5.98 m2g-1, saturation magnetization, Ms of 8.35 emug-1, and isoelectric point charge at pH 5.4. The optimum adsorption capacity, qe of 4.42 mg.g-1 for the removal of Cu2+ ions was attained at 120 min of contact time. The experimental data were best fitted to the Temkin isotherm model. A comparison between experimental kinetic studies and the theoretical aspects showed that the pseudo-second-order matched the experimental trends with a correlation coefficient of (R2 > 0.99). Besides, regeneration efficiency of 70.87% was achieved after three cycles of reusability studies. The MNA offers a practical, efficient, low-cost approach to reutilize mill scale waste products and provide ultra-fast separation to remove Cu2+ from water.
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Affiliation(s)
- Syazana Sulaiman
- Material Synthesis and Characterization Laboratory, Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Raba’ah Syahidah Azis
- Material Synthesis and Characterization Laboratory, Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
- Department of Physics, Faculty of Science, UPM, 43400 Serdang, Selangor, Malaysia
| | - Ismayadi Ismail
- Material Synthesis and Characterization Laboratory, Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor, Malaysia
| | - Hasfalina Che Man
- Department of Biological and Agricultural Engineering, Faculty of Engineering, UPM, 43400 Serdang, Selangor, Malaysia
| | - Khairul Faezah Muhammad Yusof
- Department of Process and Food Engineering Faculty of Engineering, Universiti Putra Malaysia, 43400 Selangor, Malaysia
| | - Muhammad Umar Abba
- Department of Biological and Agricultural Engineering, Faculty of Engineering, UPM, 43400 Serdang, Selangor, Malaysia
- Department of Agricultural and Bioenvironmental Engineering, Federal Polytechnic Mubi, Mubi, 650221 Nigeria
| | - Kamil Kayode Katibi
- Department of Biological and Agricultural Engineering, Faculty of Engineering, UPM, 43400 Serdang, Selangor, Malaysia
- Department of Agricultural and Biological Engineering, Faculty of Engineering and Technology, Kwara State University, Malete, 23431 Nigeria
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Pechishcheva N, Korobitsyna A, Ordinartsev D, Zaitceva P, Melchakova O, Estemirova S. EFFECTIVE SIMULTANEOUS SEPARATION OF COPPER (II) AND MOLYBDENUM (VI) FROM RHENIUM (VII) BY ADSORPTION ON X- ALUMINA. SEP SCI TECHNOL 2021. [DOI: 10.1080/01496395.2021.1891436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Nadezhda Pechishcheva
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
| | - Anna Korobitsyna
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
- Ural Federal University, Institute of Physics and Technology, Yekaterinburg, Russia
| | - Denis Ordinartsev
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
| | - Polina Zaitceva
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
- Ural Federal University, Institute of Physics and Technology, Yekaterinburg, Russia
| | - Olga Melchakova
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
| | - Svetlana Estemirova
- Institute of Metallurgy, UB RAS, Physical Chemistry department, Yekaterinburg, Russia
- Ural Federal University, Institute of New Materials and Technologies, Yekaterinburg, Russia
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Harja M, Buema G, Lupu N, Chiriac H, Herea DD, Ciobanu G. Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater. MATERIALS (BASEL, SWITZERLAND) 2020; 14:E63. [PMID: 33375597 PMCID: PMC7795148 DOI: 10.3390/ma14010063] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 01/14/2023]
Abstract
Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins-Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash.
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Affiliation(s)
- Maria Harja
- Chemical Engineering Department, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73 Prof.dr.doc. Dimitrie Mangeron Street, 700050 Iasi, Romania;
| | - Gabriela Buema
- National Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania; (N.L.); (H.C.); (D.D.H.)
| | - Nicoleta Lupu
- National Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania; (N.L.); (H.C.); (D.D.H.)
| | - Horia Chiriac
- National Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania; (N.L.); (H.C.); (D.D.H.)
| | - Dumitru Daniel Herea
- National Institute of Research and Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania; (N.L.); (H.C.); (D.D.H.)
| | - Gabriela Ciobanu
- Chemical Engineering Department, Faculty of Chemical Engineering and Environmental Protection, “Gheorghe Asachi” Technical University of Iasi, 73 Prof.dr.doc. Dimitrie Mangeron Street, 700050 Iasi, Romania;
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22
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Bisiriyu IO, Meijboom R. Adsorption of Cu(II) ions from aqueous solution using pyridine-2,6-dicarboxylic acid crosslinked chitosan as a green biopolymer adsorbent. Int J Biol Macromol 2020; 165:2484-2493. [DOI: 10.1016/j.ijbiomac.2020.10.150] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 11/24/2022]
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23
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Kıvanç MR, Ozay O, Ozay H, Ilgin P. Removal of anionic dyes from aqueous media by using a novel high positively charged hydrogel with high capacity. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1847658] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mehmet Rıza Kıvanç
- Department of Chemistry, Faculty of Education, Van Yüzüncü Yıl University, Van, Turkey
| | - Ozgur Ozay
- Laboratory of Inorganic Materials, Department of Chemistry, Faculty of Science and Arts, Canakkale Onsekiz Mart University, Canakkale, Turkey
- Department of Bioengineering, Faculty of Engineering, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Hava Ozay
- Laboratory of Inorganic Materials, Department of Chemistry, Faculty of Science and Arts, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Pinar Ilgin
- Department of Chemistry and Chemical Processing Technologies, Lapseki Vocational School, Canakkale Onsekiz Mart University, Canakkale, Turkey
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El Bouraie M, Ibrahim S. Differentiation Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes Onto MgO Nanoparticles. Int J Nanomedicine 2020; 15:7117-7141. [PMID: 33061371 PMCID: PMC7533914 DOI: 10.2147/ijn.s265739] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 08/12/2020] [Indexed: 11/23/2022] Open
Abstract
Background Metronidazole (MNZ) is an antibiotic form that is considered as a dangerous environmental pollutant due to its widespread use as growth promoters in livestock and aquaculture operations along with its therapeutic application for humans. Purpose The objective of this work was to conduct a comparative study between the efficiency of the adsorption and photocatalytic degradation of MNZ in an aqueous solution by using magnesium oxide nanoparticles (MgO NP) under different effects, as well as evaluate the performance, reusability and cost study. Materials and Methods Several instruments such as XRD, EDX, SEM, and TEM were used to characterize the chemical composition and morphological properties of the synthesized MgO NP, while the GC-MS analysis was used to monitor the degradation pathway of MNZ particles within 180 min. The simple photo-batch reactor was used to investigate the degradation of MNZ under the effect of UV radiation, initial concentration of MNZ, pH, catalyst loading, inorganic salts addition, time, and temperature. Results The degradation efficiency is mainly divided into two steps: 35.7% for maximum adsorption and 57.5% for photodegradation. Adsorption isotherm models confirmed that the process nature is chemisorption and appropriate Langmuir model, as well as to be a nonspontaneous and endothermic reaction according to the thermodynamic study. Adsorption constant during dark condition is smaller than typical adsorption equilibrium constant derived from the Langmuir-Hinshelwood kinetic model through photodegradation of MNZ that follows pseudo-first-order kinetics. Toxicity rates were reduced considerably after the photodegradation process to 88.21%, 79.84%, and 67.32% and 57.45%, 51.98%, and 43.87% by heamolytic and brine shrimp assays, respectively, for initial MNZ concentrations (20, 60, and 100 mg/L). Conclusion We significantly recommend using MgO NP as a promising catalyst in the photodegradation applications for other organic pollutants in visible light.
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Affiliation(s)
- Mohamed El Bouraie
- Central Laboratory for Environmental Quality Monitoring (CLEQM), National Water Research Center (NWRC), El Qanater El Khayria, Egypt
| | - Sabah Ibrahim
- Central Laboratory for Environmental Quality Monitoring (CLEQM), National Water Research Center (NWRC), El Qanater El Khayria, Egypt
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Chen H, Huang M, Liu Y, Meng L, Ma M. Functionalized electrospun nanofiber membranes for water treatment: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 739:139944. [PMID: 32535464 DOI: 10.1016/j.scitotenv.2020.139944] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Electrospun nanofiber membranes (ENMs) have high porosity, high specific surface area and unique interconnected structure. It has huge advantages and potential in the treatment and recycling of wastewater. In addition, ENMs can be easily functionalized by combining multifunctional materials to achieve different water treatment effects. Based on this, this review summarizes the preparation of functionalized ENMs and its detailed application in the field of water treatment. First, the process and influence factors of electrospinning process are introduced. ENMs with high porosity, thin and small fiber diameter have better performance. Secondly, the modification methods of ENMs are analyzed. Pre-electrospinning and post-electrospinning modification technology can prepare specific functionalized ENMs. Subsequently, functionalized ENMs show water treatment capabilities such as separation, adsorption, photocatalysis, and antimicrobial. Subsequently, the application of functionalized ENMs in water treatment capabilities such as separation, adsorption, photocatalysis, and antimicrobial capabilities were listed. Finally, we also made some predictions about the future development direction of ENMs in water treatment, and hope this article can provide some clues and guidance for the research of ENMs in water treatment.
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Affiliation(s)
- Haisheng Chen
- Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China; Aerospace Kaitian Environmental Technology Co., Ltd, Changsha 410100, China
| | - Manhong Huang
- Key Laboratory of Science & Technology of Eco-Textile, Ministry of Education, Donghua University, Shanghai 201620, China; College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China.
| | - Yanbiao Liu
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Lijun Meng
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
| | - Mengdie Ma
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai 201620, China
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Ifijen IH, Itua AB, Maliki M, Ize-Iyamu CO, Omorogbe SO, Aigbodion AI, Ikhuoria EU. The removal of nickel and lead ions from aqueous solutions using green synthesized silica microparticles. Heliyon 2020; 6:e04907. [PMID: 32984606 PMCID: PMC7498865 DOI: 10.1016/j.heliyon.2020.e04907] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/23/2020] [Accepted: 09/08/2020] [Indexed: 11/05/2022] Open
Abstract
Silica microparticles were synthesized from sugarcane bagasse via a green synthetic technique. The prepared silica microparticles were used to remove lead and nickel ions from their separate solutions. Microscopic analysis shows that the synthesized silica particles are spherical with good monodispersed properties. The average particle diameter of the silica microparticles is estimated to be about 432 nm. Batch adsorption experiment was employed to examine the influence of adsorbent dosage, contact time, heavy metal ion concentration and pH on the adsorption efficiency of the synthesized silica microparticles in removing the studied lead (Pb2+) and nickel (Ni2+) ions from their respective solutions. An increase in adsorbent dosage, heavy metal ion concentration, contact time and pH led to an increase in the percentage removal of Pb2+ and Ni2+ metal ions from their individual solutions. The adsorption process of Pb2+ ion onto the synthesized silica microparticles followed the Langmuir adsorption isotherm (R2 = 0.961), while, the nickel ion (Ni2+) followed the Freundlich isotherm (R2 = 0.869). The adsorption process of the studied heavy metals (Pb2+ and Ni2+) in their separate solutions favours pseudo-second-order reaction model (R2, 0.978 and 0.999) over the pseudo-first-order reaction model.
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Affiliation(s)
- Ikhazuagbe Hilary Ifijen
- Department of Research Operation, Rubber Research Institute of Nigeria, P.M.B. 1049, Benin City, Nigeria
| | - Anastasia B Itua
- Department of Chemistry, University of Benin, P.M.B. 1154, Benin City, Nigeria
| | - Muniratu Maliki
- Department of Chemistry, Edo University, Iyamho, Edo State, Nigeria
| | - Christy O Ize-Iyamu
- Department of Research Operation, Rubber Research Institute of Nigeria, P.M.B. 1049, Benin City, Nigeria
| | - Stanley O Omorogbe
- Department of Research Operation, Rubber Research Institute of Nigeria, P.M.B. 1049, Benin City, Nigeria
| | - Aireguamen I Aigbodion
- Department of Research Operation, Rubber Research Institute of Nigeria, P.M.B. 1049, Benin City, Nigeria
| | - Esther U Ikhuoria
- Department of Chemistry, University of Benin, P.M.B. 1154, Benin City, Nigeria
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Comparative Study Between Metronidazole Residues Disposal by Using Adsorption and Photodegradation Processes onto MgO Nanoparticles. J Inorg Organomet Polym Mater 2020. [DOI: 10.1007/s10904-020-01711-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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28
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The Synthesis and Effect of Silver Nanoparticles on the Adsorption of Cu2+ from Aqueous Solutions. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10144840] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The adsorption of Cu2+ ions from an aqueous solution using AgNPs synthesized from Convolvulus arvensis leaf extract was investigated. The characterization of AgNPs was investigated before and after the adsorption of Cu2+ ions via Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDS), and scanning electron microscopy (SEM) analyses. The adsorbent contained various functional groups in addition to the AgNPs, which contributed to the Cu2+ ions adsorption. The silver nanoparticle surface consisted of spherical particles and deep pores, which adsorbed numerous Cu2+ ions. The influences of dosage, pH, and contact time on adsorption of 10 and 50 mg/L Cu2+ at 298 K, and initial Cu2+ concentrations at 298 and 323 K were studied. It was found that the highest percentage of Cu2+ ions adsorbed from an aqueous solution was 98.99%; the aqueous solution had 10 mg/L of Cu2+ ions and 0.2 g of AgNPs, at pH 12 and 298 K. A pseudo-second kinetics model offered the most accurate description of the process of adsorption. The process of Cu2+ adsorption more resembled a Langmuir rather than a Freundlich isotherm model, including chemical and physical mixed adsorption (mixed adsorption) processes, and was exothermic and spontaneous.
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Handayani KS, Irawan B, Soegianto A. Short-term mercury exposure in tilapia ( Oreochromis niloticus) at different salinities: impact on serum osmoregulation, hematological parameters, and Na +/K +-ATPase level. Heliyon 2020; 6:e04404. [PMID: 32685728 PMCID: PMC7358731 DOI: 10.1016/j.heliyon.2020.e04404] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 10/09/2019] [Accepted: 07/03/2020] [Indexed: 11/21/2022] Open
Abstract
The objectives of this study were to analyze and compare the effects of mercury (Hg) exposure on osmoregulation and hematological responses in East Java strain tilapia (Oreochromis niloticus). Fish were exposed to 0, 0.1, and 1 mg L-1 Hg at 0, 5, 10, and 15 g L-1 salinities, and serum osmolality (SO), ion level, hematological parameters, and sodium (Na+)/potassium (K+)-ATPase (NKA) levels in the gills and kidney were assessed after 96 h of exposure. SO significantly increased in fish exposed to Hg at 15 g L-1 salinity compared with those exposed at 0, 5, 10, and 15 g L-1 salinities, but SO did not significantly increase in fish exposed to Hg at 5 and 10 g L-1 salinities compared with those exposed at 0 g L-1 salinity. At 15 g L-1 salinity, the Na+ level was significantly different from that at 0, 5, and 10 g L-1 salinities. The chloride ion level significantly increased only at 15 g L-1 salinity. Furthermore, the K+ level was significantly different at 10 and 15 g L-1 salinities from that at 0 and 5 g L-1 salinities. Hematocrit and hemoglobin levels and red blood cell and white blood cell (WBC) counts were not significantly different among all salinities. At 15 g L-1 salinity, the NKA level in the gills was significantly different from that at 0 g L-1 salinity, but in the kidney, there was no difference among all salinities. These data provide useful information for future reference and aquaculture practices to reduce Hg effects on tilapia. In conclusion, higher salinity reduced the effect of Hg on the K+ level and WBC count in tilapia.
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Affiliation(s)
- Kiki Syaputri Handayani
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Jl Mulyorejo, Surabaya, Indonesia
| | - Bambang Irawan
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Jl Mulyorejo, Surabaya, Indonesia
| | - Agoes Soegianto
- Department of Biology, Faculty of Science and Technology, Universitas Airlangga, Jl Mulyorejo, Surabaya, Indonesia
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Militaru BA, Pode R, Lupa L, Schmidt W, Tekle-Röttering A, Kazamer N. Using Sewage Sludge Ash as an Efficient Adsorbent for Pb (II) and Cu (II) in Single and Binary Systems. Molecules 2020; 25:molecules25112559. [PMID: 32486401 PMCID: PMC7321074 DOI: 10.3390/molecules25112559] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 11/16/2022] Open
Abstract
Incineration of sewage sludge produces every year huge amounts of sewage sludge ash. Due to its porosity and composition, sewage sludge ash can be used as an adsorbent for heavy metal ions removal. The present paper discusses the efficiency and feasibility of its use as an adsorbent for Pb (II) and Cu (II) removal in single and binary systems. Sewage sludge ash dosage, pH influence, equilibrium and kinetic studies were examined. The results show that sewage sludge ash is an effective and environmentally friendly adsorbent. The maximum adsorption capacity was 25.0 mg/g for Pb (II) and 7.5 mg/g for Cu (II). The presence of the competitive metal led to lower adsorption rate. The study concludes that sewage sludge ash is a promising adsorbent for Pb (II) and Cu (II) removal from wastewater presenting both economic and environmental benefits.
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Affiliation(s)
- Bogdan Adrian Militaru
- Faculty of Industrial Chemistry and Environmental, Politehnica University of Timisoara, 300006 Timisoara, Romania; (R.P.); (L.L.)
- Correspondence: ; Tel.: +40-729811595
| | - Rodica Pode
- Faculty of Industrial Chemistry and Environmental, Politehnica University of Timisoara, 300006 Timisoara, Romania; (R.P.); (L.L.)
| | - Lavinia Lupa
- Faculty of Industrial Chemistry and Environmental, Politehnica University of Timisoara, 300006 Timisoara, Romania; (R.P.); (L.L.)
| | - Winfried Schmidt
- Westfälische Hochschule, University of Applied Sciences, 45897 Gelsenkirchen, Germany; (W.S.); (A.T.-R.); (N.K.)
| | - Agnes Tekle-Röttering
- Westfälische Hochschule, University of Applied Sciences, 45897 Gelsenkirchen, Germany; (W.S.); (A.T.-R.); (N.K.)
| | - Norbert Kazamer
- Westfälische Hochschule, University of Applied Sciences, 45897 Gelsenkirchen, Germany; (W.S.); (A.T.-R.); (N.K.)
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Bornillo KAS, Kim S, Choi H. Cu (II) removal using electrospun dual-responsive polyethersulfone-poly (dimethyl amino) ethyl methacrylate (PES-PDMAEMA) blend nanofibers. CHEMOSPHERE 2020; 242:125287. [PMID: 31896200 DOI: 10.1016/j.chemosphere.2019.125287] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 06/10/2023]
Abstract
A novel electrospun dual-responsive polyethersulfone-poly(dimethyl amino) ethyl methacrylate nanofibrous adsorbent was fabricated via electrospinning for the removal of Cu (II) from aqueous solution. Morphological, chemical, and dual-responsiveness of the composite nanofibrous adsorbent were characterized using scanning electron microscope equipped with energy dispersive x-ray, Fourier transform infrared, and UV-VIS spectrophotometer, respectively. The obtained uniform and bead-free nanofibers were then used for the removal of Cu (II) from aqueous solution. Results showed that the temperature-responsiveness of the nanofibers is dependent on the pH of the solution, as indicated by the decreasing lower critical solution temperature with increasing pH level. Temperature and pH offer a synergistic effect on the adsorption of Cu (II), with maximum adsorption observed at pH 6.5 at 55 °C. Kinetic, thermodynamic, and isotherm studies indicate that the adsorption of copper ions follows chemisorption and is thermodynamically favored at increasing temperature. From the Langmuir isotherm model, the obtained maximum adsorption capacity, qm, was 161.30 mg g-1 at 55 °C. From the desorption studies, results showed that the maximum desorption was observed at pH 3 at 25 °C. In conclusion, PES-PDMAEMA has the capability to adsorb and desorb Cu (II) by adjusting both pH and temperature, hence it can be considered as an efficient and economical adsorbent for heavy metals such Cu (II).
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Affiliation(s)
- Kristal Aubrey S Bornillo
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, South Korea
| | - Soyoung Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, South Korea
| | - Heechul Choi
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology (GIST), 123 Cheomdangwagi-ro, Buk-gu, Gwangju, South Korea.
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Parvin S, Biswas BK, Rahman MA, Rahman MH, Anik MS, Uddin MR. Study on adsorption of Congo red onto chemically modified egg shell membrane. CHEMOSPHERE 2019; 236:124326. [PMID: 31545218 DOI: 10.1016/j.chemosphere.2019.07.057] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/27/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
Consumption of eggs leads to generation of huge amount of waste in the form of egg shell, which consists of calcined shell and fibrous membrane. In this study, egg shell membrane (ESM) were chemically modified and used to adsorb congo red from its synthetic aqueous solution. Fourier Transform Infra-red (FTIR) spectra confirmed the presence of hydroxyl, carbonyl and methylene groups in egg shell membrane. Scanning Electron Micrographs (SEM) were also performed to characterize the modified egg shell membrane. Concentration of congo red was measured by using UV spectrophotometer. Effects of various parameters such as initial pH, ESM dosage, contact time and initial congo red concentration were investigated. Highest percentage of adsorption (98%) was obtained at pH 4.5 at a solid to liquid ratio of 1 g-100 ml of congo red solution of concentration of 100 mg/l. Pseudo-second order kinetic model was the best fitted model for this study. The reaction rate constant was found to be 58.04 × 10-3 g mg-1·min-1. The adsorption mechanism was supposed to happen via film diffusion as well as via intraparticle diffusion. Langmuir isotherm gave a better fit for the adsorption compared to the Freundlich isotherm. The maximum monolayer adsorption capacity was determined to be 117.65 mg/g. Thermodynamic parameters (ΔG, ΔH and ΔS) were also studied in this work. The change in enthalpy and change in entropy was found to be 29.217 kJ/mol and 0.124 kJ/mol·K, respectively. The values of ΔG were found to become more negative with increasing temperature.
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Affiliation(s)
- Shahanaz Parvin
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Biplob Kumar Biswas
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh.
| | - Md Asadur Rahman
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Hafizur Rahman
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Shahyaz Anik
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Raes Uddin
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
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Othman NAF, Selambakkannu S, Ting TM, Hashim A, Tuan Abdullah TA. Integration of phosphoric acid onto radiation grafted poly (2,3-epoxypropyl methacrylate) -PP/PE non-woven fabrics aimed copper adsorbent via response surface method. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1963-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Modified natural loofah sponge as an effective heavy metal ion adsorbent: Amidoxime functionalized poly(acrylonitrile-g-loofah). Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.07.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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A Study on Photo-Fenton Method for Simulatenous and Synergic Decreasing Concentration of Pb(II) and Cu(II) in the Solution. JURNAL KIMIA SAINS DAN APLIKASI 2019. [DOI: 10.14710/jksa.22.5.192-199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
To prevent an environmental pollution by hazardous heavy metals, in the present study, a simulatenous decrease of the concentration of Pb((II) and Cu(II) in the solution by photo-Fenton method has been systematically studied. Photo-Fenton process proceeded in a close reactor by batch technique. The process was conducted by exposure solutions containing Pb(II) and Cu(II) ions, and Fenton’s reagent (Fe2+ and H2O2) under UV-A lamp. In this study, the initial concentations of Pb(II) and Cu(II), and the exposure time were optimized. The synergyc effect that may be appeared on the decrease of Pb(II) and Cu(II) ion concentrations simultaneously through photo-Fenton process was also addressed. The concentrations of Pb(II) and Cu(II) in the solution were determined by AAS. The research results exhibited that photo-Fenton process could decrease Pb(II) and Cu(II) concentrations, and the maximum decreases, 46.12 % dan 16.86% for Pb(II) and for Cu(II) respecticely, were found by applying both initial concentration of Pb(II) and Cu(II) as much 35 mg/L, and 60 min of the time. The concentration decreases of Pb (II) and Cu(II) were results of oxidation by OH and by electron to form PbO2 and Cu particles respectively as probed by EDX data. Furthermore, photo-Fenton process toward a solution containing Pb(II) and Cu(II) ions allowed oxidation of Pb(II) and reduction of Cu(II) simultaneously and showed a synergic effect. Such effect was demonstrated by the fact that the presence of Cu(II) ion in the photo-Fenton process of Pb(II) solution could improve the Pb(II) oxidation and the highest improvement of Pb(II) oxidation (81.06%) was shown by 35 mg/L of the Cu(II) concentration. Similarly, the presence of Pb(II) in the photo-Fenton process of Cu(II) solution could enhance the reduction of Cu(II), and the highest effect on the Cu(II) reduction enhancement was exhibited by 35 mg/L of the Pb(II) concentration.
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Jiang B, Fu L, Cao W, Zhang B, Li F, Liu Y. Microbial flocculant produced by a novel Paenibacillus sp., strain A9, using food processing wastewater to replace fermentation medium and its application for the removal of Pb(II) from aqueous solution. ADSORPT SCI TECHNOL 2019. [DOI: 10.1177/0263617419876850] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Due to high production costs, the popularization and application of microbial flocculants in the field of water treatment have been limited. In this study, the capture of lead ions by the fermentation broth of a novel Paenibacillus sp. strain A9 and cultured with food wastewater was further investigated. The results revealed that the production of MBFA9 could be increased significantly by adding a small amount of carbon and nitrogen to food wastewater. Under the best experimental conditions (pH 8.5, culture temperature 30°C, 150 r/min), adding 1% (m/v) carbon and 0.1% (m/v) nitrogen to 1% (v/v) wastewater resulted in a yield of MBFA9 of 6.29 g/l. At a temperature of 30°C, pH of 5, contact time of 35 min, and FBA9 dosage of 5%, the removal rate and removal capacity of Pb(II) reached the highest values of 95.1% and 317 mg/g, respectively. Field emission scanning electron microscopy analysis indicated that bacterial cells, metabolite small molecule acids, and MBFA9 in FBA9 all contributed to the removal of Pb(II). Fourier-transform infrared spectrometry analysis indicated that functional groups such as –OH, –COOH, –CO, and –NH2 existed in MBFA9 and on the cell surface. Various mechanisms involved in Pb(II) removal can occur simultaneously, including cell surface adsorption, microcrystallization, and biological flocculation.
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Affiliation(s)
- Binhui Jiang
- College of Resource and Civil Engineering, Northeastern University, Shenyang, China
| | - Lili Fu
- College of Petroleum and Gas Engineering, Liaoning Shihua University, Fushun, China
| | | | | | - Fengda Li
- College of Resource and Civil Engineering, Northeastern University, Shenyang, China
| | - Yana Liu
- College of Foreign Languages Department, Shenyang Ligong University, Shenyang, China
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Application of Response Surface Methodology and Desirability Function in the Optimization of Adsorptive Remediation of Arsenic from Acid Mine Drainage Using Magnetic Nanocomposite: Equilibrium Studies and Application to Real Samples. Molecules 2019; 24:molecules24091792. [PMID: 31075844 PMCID: PMC6539454 DOI: 10.3390/molecules24091792] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/02/2019] [Accepted: 05/04/2019] [Indexed: 11/25/2022] Open
Abstract
A magnetic multi-walled carbon nanotube/zeolite nanocomposite was applied for the adsorption and removal of arsenic ions in simulated and real acid mine drainage samples. The adsorption mechanism was investigated using two-parameter (Langmuir, Freundlich, Temkin) and three-parameter (Redlich–Peterson, and Sips) isotherm models. This was done in order to determine the characteristic parameters of the adsorptive removal process. The results showed that the removal process was described by both mono- and multilayer adsorptions. Adsorption studies demonstrated that a multi-walled carbon nanotube/zeolite nanocomposite could efficiently remove arsenic in simulated samples within 35 min. Based on the Langmuir isotherm, the adsorption capacity for arsenic was found to be 28 mg g−1. The nanocomposite was easily separated from the sample solution using an external magnet and the regeneration was achieved by washing the adsorbent with 0.05 mol L−1 hydrochloric acid solution. Moreover, the nanoadsorbent was reusable for at least 10 cycles of adsorption-desorption with no significant decrease in the adsorption capacity. The nanoadsorbent was also used for the arsenic removal from acid mine drainage. Overall, the adsorbent displayed excellent reusability and stability; thus, they are promising nanoadsorbents for the removal of arsenic from acid mine drainage.
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Chen C, Li F, Guo Z, Qu X, Wang J, Zhang J. Preparation and performance of aminated polyacrylonitrile nanofibers for highly efficient copper ion removal. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.02.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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39
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Nickel and cobalt adsorption on hydroxyapatite: a study for the de-metalation of electronic industrial wastewaters. ADSORPTION 2019. [DOI: 10.1007/s10450-019-00066-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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