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Sharma A, Devi I. Animal waste as a valuable biosorbent in the removal of heavy metals from aquatic ecosystem-an eco-friendly approach. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:606. [PMID: 38856948 DOI: 10.1007/s10661-024-12740-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 05/17/2024] [Indexed: 06/11/2024]
Abstract
Toxic pollutants in the form of heavy metals are added through various anthropogenic activities daily into the aquatic ecosystem beyond their permissible limits, and their bioaccumulation capacity makes them hazardous substances for the survival of all organisms. Thus, their removal from aquatic ecosystems is the need of the hour. Treatment of wastewater containing heavy metals through biosorption is gaining popularity and is being explored all around the world due to its various advantages over conventional methods of treatment. Utilization of animal waste as a biomaterial could be the best solution to remove it from the ecosystem. Such treatment methods are a blessing for developing and underdeveloped countries due to their low cost. This paper provides in-depth details about heavy metals, their health implications, mechanisms of toxicity, modes of transportation, and conventional treatment approaches. A comprehensive understanding of the biosorption process, encompassing its world scenario, evolution, mechanisms, factors affecting the process, and advantages, will also be covered. Finally, animal wastes and their applicability in the removal of heavy metal pollutants from wastewater shall also be thoroughly reviewed, followed by their future utility and recommendations.
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Affiliation(s)
- Arti Sharma
- Department of Zoology, University of Jammu, Jammu, Jammu and Kashmir, 180006, India
| | - Isha Devi
- Department of Zoology, University of Jammu, Jammu, Jammu and Kashmir, 180006, India.
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2
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Kong Q, Zhang H, Wang P, Lan Y, Ma W, Shi X. NiCo bimetallic and the corresponding monometallic organic frameworks loaded CMC aerogels for adsorbing Cu 2+: Adsorption behavior and mechanism. Int J Biol Macromol 2023:125169. [PMID: 37270131 DOI: 10.1016/j.ijbiomac.2023.125169] [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: 04/05/2023] [Revised: 05/13/2023] [Accepted: 05/29/2023] [Indexed: 06/05/2023]
Abstract
In this study, three-dimensional (3D) carboxymethylcellulose sodium (CMC) aerogel was decorated with NiCo bimetallic and the corresponding monometallic organic frameworks to prepare MOFs-CMC composite adsorbents for the removal of Cu2+. The obtained MOFs-CMC composite including Ni/Co-MOF-CMC, Ni-MOF-CMC, and Co-MOF-CMC were characterized by SEM, FT-IR, XRD, XPS analysis, and zeta potential. The adsorption behavior of MOFs-CMC composite for Cu2+ was explored by batch adsorption test, adsorption kinetics and adsorption isotherms. The experimental data satisfied the pseudo-second-order model and Langmuir isotherm model. The maximum adsorption capacities followed the sequence of Ni/Co-MOF-CMC (233.99 mg/g) > Ni-MOF-CMC (216.95 mg/g) > Co-MOF-CMC (214.38 mg/g), indicating that there was a synergistic effect between Ni and Co to promote the adsorption of Cu2+. Combining characterization analysis and density functional theory (DFT) calculation, it is clarified that the adsorption mechanism of MOFs-CMC for Cu2+ includes ion exchange, electrostatic interactions, and complexation.
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Affiliation(s)
- Qiaoping Kong
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Hongzheng Zhang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Peigan Wang
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Yunlong Lan
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Weiwei Ma
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China
| | - Xueqing Shi
- School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266520, PR China.
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Adsorptive removal of cationic dye by synthesized sustainable xanthan gum-g p(AMPS-co-AAm) hydrogel from aqueous media: Optimization by RSM-CCD model. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Adsorption of malachite green on the modified montmorillonite/xanthan gum-sodium alginate hybrid nanocomposite. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03889-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Low-Cost RSAC and Adsorption Characteristics in the Removal of Copper Ions from Wastewater. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12115612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Adsorption is a typical method for treating copper-containing wastewater. Fly ash and steel slag both have a good adsorption performance, and activated clay is added in this study, too. In this study, the performance of residue and soil adsorption composite (RSAC) particles for copper ion adsorption was discussed through the substrate ratio and the influence mechanism, to achieve the win–win effect of industrial waste reuse and copper ion wastewater treatment. The results indicated that adsorption time, dosage, initial copper ion concentration, coexisting ions, and temperature showed different effects on the adsorption, respectively. Additionally, the adsorption kinetic study showed the removal of copper ions by adsorption of RSAC particles was in accordance with quasi-primary kinetic model and quasi-secondary kinetic model. The adsorption thermodynamics study shows the adsorption process of ΔG0 < 0, ΔH0 > 0 and ΔS0 > 0, indicating that the process of copper ion adsorption by RSAC particles was spontaneous, heat-absorbing, and entropy-increasing. The research demonstrates that RSAC particles have a certain adsorption capacity for copper ion.
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Chitosan–collagen/hydroxyapatite and tripolyphosphate nanocomposite: characterization and application for copper removal from aqueous solution. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03998-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Maaloul N, Oulego P, Rendueles M, Ghorbal A, Díaz M. Enhanced Cu(II) adsorption using sodium trimetaphosphate-modified cellulose beads: equilibrium, kinetics, adsorption mechanisms, and reusability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:46523-46539. [PMID: 32696406 DOI: 10.1007/s11356-020-10158-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
The current study is focused on the simple synthesis of two novel biosorbent beads: BASB/STMP and CNFB/STMP, derived respectively from bleached almond shell (BAS) and cellulose nanofiber from almond shell (CNF) by means of chemical crosslinking with sodium trimetaphosphate (STMP). These biosorbents were thoroughly characterized in terms of structure (FTIR), texture (N2 adsorption-desorption), thermal behavior (TGA/DTG), morphology (SEM), and surface properties (XPS). The adsorption kinetics of Cu(II) ions onto BASB/STMP and CNFB/STMP materials proved the chemisorption interaction between Cu(II) ions and the STMP functionalized beads. The BASB/STMP equilibrium data were successfully described by the Redlich-Peterson model and the CNFB/STMP data by the Sips model which disclosed maximum adsorption capacities of 141.44 mg g-1 and 147.90 mg g-1, respectively. Furthermore, the BASB/STMP bioadsorbent offers easy regeneration and better reusability with high efficiency (> 83%). This study sheds light on the preparation of low-cost adsorbents for wastewater treatment in order to improve the competitiveness and eco-friendliness of agrowaste-based processes.
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Affiliation(s)
- Najeh Maaloul
- Applied Thermodynamic Research Laboratory LR18ES33, National Engineering School of Gabes, University of Gabes, Avenue Omar Ibn El Khattab, 6029, Gabes, Tunisia
| | - Paula Oulego
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería s/n, E-33071, Oviedo, Spain
| | - Manuel Rendueles
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería s/n, E-33071, Oviedo, Spain
| | - Achraf Ghorbal
- Applied Thermodynamic Research Laboratory LR18ES33, National Engineering School of Gabes, University of Gabes, Avenue Omar Ibn El Khattab, 6029, Gabes, Tunisia
- Higher Institute of Applied Sciences and Technology of Gabes, University of Gabes, Avenue Omar Ibn El Khattab, 6029, Gabes, Tunisia
| | - Mario Díaz
- Department of Chemical and Environmental Engineering, University of Oviedo, C/ Julián Clavería s/n, E-33071, Oviedo, Spain.
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Saeed A, Murshed MN, Al-Shahari EA. Effect of low-dose fast neutrons on the protein components of peripheral blood mononuclear cells of whole-body irradiated Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40443-40455. [PMID: 32666461 DOI: 10.1007/s11356-020-10085-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
The immune system is exposed to extremely low doses of neutrons under different circumstances, such as through exposure to cosmic rays, nuclear accidents, and neutron therapy. Peripheral blood mononuclear cells (PBMCs) are the primary immune cells that exhibit selective immune responses. Changes in the functions of the protein components of PBMC can be induced by structural modifications of these proteins themselves. Herein, we have investigated the effect of low-dose fast neutrons on PBMC proteins at 0, 2, 4, and 8 days post-whole body irradiation. 64 Wistar rats were used in this study of which, 32 were exposed to fast neutrons at a total dose of 10 mGy (241Am-Be, 0.2 mGy/h), and the other 32 were used as controls. Blood samples were drawn, and PBMCs were isolated from whole blood. Fourier transform infrared (FTIR) spectroscopy and fluorescence spectroscopy were used to estimate the changes in the proteins of PBMCs. An alkaline comet assay was performed to assess DNA damage. Hierarchical cluster analysis (HCA) and principal components analysis (PCA) were utilized to discriminate between irradiated and non-irradiated samples. FTIR and fluorescence spectra of the tested samples revealed alterations in the amides and tryptophan, and therefore protein structure at time intervals of 2 and 4 days post-irradiation. No changes were recorded in samples tested at time intervals of 0 and 8 days post-irradiation. The FTIR band intensities of the PBMC proteins of the irradiated samples decreased slightly and were statistically significant. Curve fitting of the amide I band in the FTIR spectra showed changes in the secondary structure of the proteins. At 2 days post-irradiation, fluorescence spectra of the tested samples revealed decreases in the band tryptophan. The comet assay revealed low levels of DNA damage. In conclusion, low-dose fast neutrons can affect the proteins of PBMC.
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Affiliation(s)
- Abdu Saeed
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Department of Physics, Thamar University, Thamar, Yemen.
| | - Mohammad N Murshed
- Department of Physics, Faculty of Science and Arts, Mohayel Aser, King Khalid University, Abha, Saudi Arabia
- Department of Physics, Faculty of Science, Ibb University, Ibb, Yemen
| | - Eman Abdulqader Al-Shahari
- Department of Biology, Faculty of Science and Arts, Mohayel Aser, King Khalid University, Abha, Saudi Arabia
- Department of Biology, Faculty of Science, Ibb University, Ibb, Yemen
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Ighalo JO, Eletta OAA. Recent advances in the biosorption of pollutants by fish scales: a mini-review. CHEM ENG COMMUN 2020. [DOI: 10.1080/00986445.2020.1771322] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Joshua O. Ighalo
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Omodele A. A. Eletta
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
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Eletta OAA, Adeniyi AG, Ighalo JO, Onifade DV, Ayandele FO. Valorisation of Cocoa (Theobroma cacao) pod husk as precursors for the production of adsorbents for water treatment. ACTA ACUST UNITED AC 2020. [DOI: 10.1080/21622515.2020.1730983] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Omodele A. A. Eletta
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Adewale George Adeniyi
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Joshua O. Ighalo
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Damilola Victoria Onifade
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
| | - Fisayo Oyepeju Ayandele
- Chemical Engineering Department, Faculty of Engineering and Technology, University of Ilorin, Ilorin, Nigeria
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A mini-review of the morphological properties of biosorbents derived from plant leaves. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2335-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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12
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Achieng GO, Kowenje CO, Lalah JO, Ojwach SO. Preparation, characterization of fish scales biochar and their applications in the removal of anionic indigo carmine dye from aqueous solutions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:2218-2231. [PMID: 32198339 DOI: 10.2166/wst.2020.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The preparation and applications of Tilapia (Oreochromis niloticus) fish scale biochars (FSB) as an adsorbent in the removal of indigo carmine dye (ICD) from aqueous solutions is described. The biochars were prepared through pyrolysis over a temperature range of 200 °C-800 °C and characterized for surface charge, functional groups, thermal stability, particle size and morphology, elemental composition, crystallinity, and surface area by using pHpzc, Fourier transform infrared (FTIR) spectroscopy, thermo-gravimetric analysis (TGA), transmission electron microscopy/scanning electron microscopy (TEM/SEM), energy dispersive X-ray (EDX) spectroscopy, powder X-ray diffraction (PXRD) and Brunauer-Emmett-Teller (BET) techniques, respectively. Batch experiments were carried out to determine the variation of adsorption process with initial dye concentration, contact time, initial solution pH, adsorbent load, temperature and adsorbent pyrolysis temperature on the removal of the dye. The percentage removal increased with increase in initial dye concentration and adsorbent dosage. A pH of 2 was the most appropriate for the adsorption experiments. The equilibrium data fitted pseudo-first-order kinetics and Freundlich models, while the thermodynamic parameters confirmed that the adsorption process was endothermic.
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Affiliation(s)
- George O Achieng
- Department of Chemistry, Maseno University, P.O. Box 333-40105, Maseno, Kenya
| | - Chrispin O Kowenje
- Department of Chemistry, Maseno University, P.O. Box 333-40105, Maseno, Kenya
| | - Joseph O Lalah
- Department of Geochemistry and Environmental Chemistry, School of Chemistry and Material Science, Technical University of Kenya, P.O. Box 52428-00200, Nairobi, Kenya
| | - Stephen O Ojwach
- School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa E-mail:
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Song S, Song Y, Shi M, Hu Z, Li T, Lin S. Transport and numerical simulation of Cu 2+ in saturated porous medium in the presence of magnetic nanoparticles. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:35827-35837. [PMID: 31705411 DOI: 10.1007/s11356-019-06441-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Fe3O4 magnetic nanoparticles (MNPs) can control and remove heavy metal pollution from wastewater. This approach has gained broad attention due to its excellent surface properties. However, there have been limited studies for Cu2+ retention and transfer regulation in saturated porous media in the presence of MNPs. The objectives of this study were to analyze the migration and deposition mechanism of Cu2+ under different conditions through static adsorption and numerical models. The results indicated that the MNPs-quartz sand had better adsorption capacity for Cu2+ (59.1 mg/kg) than quartz sand only (26.84 mg/kg), and thus it inhibited the migration of Cu2+; the effect improved with increasing MNP content. Furthermore, high ion strength (IS) and flow velocity were beneficial to the migration of Cu2+, and a high pH inhibited the migration of Cu2+. The numerical simulation results showed that the two-site model (TSM) nicely fitted the migration of Cu2+ in quartz sand and MNPs-sand. The migration of Cu2+ in both media was affected by chemical nonequilibrium. We also found that the presence of MNPs had little impact on the dispersion of porous media by observing the fitting parameters D (dispersion coefficient) 0.202 for both media. Our results can evaluate the risk of heavy metal migration and retention in saturated porous media in the presence of nanoparticles; this can prevent aquifer pollution.
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Affiliation(s)
- Shihui Song
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Yinghao Song
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Mengdi Shi
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Zheng Hu
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Tianyu Li
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China
| | - Shanshan Lin
- School of Environment, Northeast Normal University, No. 2555, Jingyue Street, Changchun, 130117, Jilin, People's Republic of China.
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Su Y, Wang J, Li S, Zhu J, Liu W, Zhang Z. Self-templated microwave-assisted hydrothermal synthesis of two-dimensional holey hydroxyapatite nanosheets for efficient heavy metal removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30076-30086. [PMID: 31418146 DOI: 10.1007/s11356-019-06160-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 07/31/2019] [Indexed: 06/10/2023]
Abstract
Heavy metals have caused serious environmental problems and threat to human health. Ultrathin and holey two-dimensional (2D) nanosheets have recently drawn significant attention as superb adsorbent material to remove heavy metal ions due to their unique physicochemical properties. Herein, we report a self-template-directed ultrafast reaction route to synthesis porous hydroxyapatite (Ca10(PO4)6(OH)2) nanosheets via a microwave-assisted hydrothermal method using poly(allylamine hydrochloride) as an additive. The resulting hydroxyapatite nanosheets showed a high specific surface area (92.9 m2 g-1) and excellent adsorption performance for various heavy metal ions including Pb(II), Cu(II), and Cd(II), with maximum adsorption capacities of 210.5, 31.6, and 24.9 mg g-1, respectively. The adsorption kinetics fitted well with the pseudo-second-order equation and the equilibrium data showed a high correlation coefficient with the Langmuir model. Based on the experimental results and analysis, we can conclude that the sorption of heavy metal ions with the hydroxyapatite nanosheets mainly attributes to surface complexation and cation exchange. The present synthetic strategy allows the fast and massive production of porous hydroxyapatite ultrathin nanosheets and may also potentially be applicable to the fabrication of other metal phosphates with assembled or hierarchical porous structures towards various applications such as water purification.
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Affiliation(s)
- Yiping Su
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
- Beijing Key Lab of New Energy Materials and Technology, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jing Wang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China
| | - Shun Li
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
| | - Jianhua Zhu
- Anhui Province Key Laboratory of Metallurgical Emission Reduction and Resources, Metallurgical Reduction and Comprehensive Utilization of Resources of Key Laboratory of Ministry of Education, Anhui University of Technology, Maanshan, 243002, Anhui, China
| | - Weishu Liu
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Zuotai Zhang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Southern University of Science and Technology, Shenzhen, 518055, Guangdong, China.
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Yang H, Hu Y, Wang X, Fu W, Tian H, Alam E. Investigation on synthesis of ion-imprinted mesoporous adsorbents by using ultrasound- and microwave-assisted preparation and their dynamic adsorption properties on heavy metals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:10987-10999. [PMID: 30783933 DOI: 10.1007/s11356-019-04436-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
Removal of the heavy metal ions in aqueous solution is an important technology for waste water treatment. The effects of using ultrasonic and microwave on synthesizing Pb2+, Zn2+, and Cu2+ imprinted mesoporous adsorbents (Pb-IMA-UM, Zn-IMA-UM, and Cu-IMA-UM) and their dynamic adsorption properties were studied. The microstructure and composition of the ion-imprinted mesoporous adsorbents were discussed in detail by TEM, FTIR, N2 adsorption-desorption, XRD, and EDS. The pore sizes of mesoporous absorbents were improved more uniformly by using ultrasonic agitation than magnetic stirring. The elution efficiency of imprinting ions can be enhanced by microwave elution. Prepared Pb-IMA-UM, Zn-IMA-UM, and Cu-IMA-UM were used for dynamic adsorption study of heavy metals. The detected optimal feed rate was 20.0 mL/min and the influent concentration was 60 mg/L; the equilibrium adsorption capacities of Pb-IMA-UM, Cu-IMA-UM, and Zn-IMA-UM could reach 198 mg/g, 51.5 mg/g, and 57.3 mg/g, respectively. The dynamic regeneration performance of the adsorbent was also investigated with the Cu-IMA-UM sample. The adsorption rate remained above 89% after five dynamic regeneration experiments. At last, the actual wastewater from an electroplating industry was used as the research object. Three groups of dynamic adsorption coefficient contours of Pb-IMA-UM, Zn-IMA-UM, and Cu-IMA-UM were obtained when influents flowed into three adsorption columns separately. The experimental results showed that an ion-imprinted adsorbent had a much better adsorption capacity of imprinted ions under the various metals mixed conditions.
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Affiliation(s)
- Hong Yang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, People's Republic of China.
| | - Yanling Hu
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, People's Republic of China
| | - Xiaoyu Wang
- School of Chemical Engineering, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Weng Fu
- School of Chemical Engineering, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Huijuan Tian
- School of Geomatics and Marine Information, Huaihai Institute of Technology, Lianyungang, 222005, People's Republic of China
| | - Easar Alam
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, 221116, People's Republic of China
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