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Abidli A, Huang Y, Ben Rejeb Z, Zaoui A, Park CB. Sustainable and efficient technologies for removal and recovery of toxic and valuable metals from wastewater: Recent progress, challenges, and future perspectives. CHEMOSPHERE 2022; 292:133102. [PMID: 34914948 DOI: 10.1016/j.chemosphere.2021.133102] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 11/08/2021] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
Due to their numerous effects on human health and the natural environment, water contamination with heavy metals and metalloids, caused by their extensive use in various technologies and industrial applications, continues to be a huge ecological issue that needs to be urgently tackled. Additionally, within the circular economy management framework, the recovery and recycling of metals-based waste as high value-added products (VAPs) is of great interest, owing to their high cost and the continuous depletion of their reserves and natural sources. This paper reviews the state-of-the-art technologies developed for the removal and recovery of metal pollutants from wastewater by providing an in-depth understanding of their remediation mechanisms, while analyzing and critically discussing the recent key advances regarding these treatment methods, their practical implementation and integration, as well as evaluating their advantages and remaining limitations. Herein, various treatment techniques are covered, including adsorption, reduction/oxidation, ion exchange, membrane separation technologies, solvents extraction, chemical precipitation/co-precipitation, coagulation-flocculation, flotation, and bioremediation. A particular emphasis is placed on full recovery of the captured metal pollutants in various reusable forms as metal-based VAPs, mainly as solid precipitates, which is a powerful tool that offers substantial enhancement of the remediation processes' sustainability and cost-effectiveness. At the end, we have identified some prospective research directions for future work on this topic, while presenting some recommendations that can promote sustainability and economic feasibility of the existing treatment technologies.
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Affiliation(s)
- Abdelnasser Abidli
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, Faculty of Applied Science and Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada; Institute for Water Innovation (IWI), Faculty of Applied Science and Engineering, University of Toronto, 55 St. George Street, Toronto, Ontario, M5S 1A4, Canada.
| | - Yifeng Huang
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, Faculty of Applied Science and Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada; Institute for Water Innovation (IWI), Faculty of Applied Science and Engineering, University of Toronto, 55 St. George Street, Toronto, Ontario, M5S 1A4, Canada; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang, China
| | - Zeineb Ben Rejeb
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, Faculty of Applied Science and Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
| | - Aniss Zaoui
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, Faculty of Applied Science and Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
| | - Chul B Park
- Microcellular Plastics Manufacturing Laboratory (MPML), Department of Mechanical and Industrial Engineering, Faculty of Applied Science and Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada; Institute for Water Innovation (IWI), Faculty of Applied Science and Engineering, University of Toronto, 55 St. George Street, Toronto, Ontario, M5S 1A4, Canada.
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Jiang L, Chen Y, Wang Y, Lv J, Dai P, Zhang J, Huang Y, Lv W. Contributions of Various Cd(II) Adsorption Mechanisms by Phragmites australis-Activated Carbon Modified with Mannitol. ACS OMEGA 2022; 7:10502-10515. [PMID: 35382289 PMCID: PMC8973121 DOI: 10.1021/acsomega.2c00014] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 03/07/2022] [Indexed: 05/16/2023]
Abstract
Due to its high toxicity, persistence, and bioaccumulation in the food chain, controlling cadmium (Cd) pollution in wastewater is urgent. Activated carbon is a popular material for removing Cd. To improve the Cd(II) adsorption efficiency by increasing the number of oxygen-containing functional groups, Phragmites australis-activated carbon (PAAC) was modified with mannitol at a low temperature (150 °C). The textural and chemical characteristics of PAAC and modified PAAC (M-PAAC) were analyzed by surface area analysis, elemental analysis, Boehm's titration, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Batch adsorption experiments were conducted to investigate the influence of Cd(II) concentration, contact time, ionic strength, and pH on Cd(II) adsorption. The main adsorption mechanisms of Cd(II) on activated carbon were quantitatively calculated. The results showed that mannitol modification slightly decreased the S BET (5.30% of PAAC) and increased the content of carboxyl, lactone, and phenolic groups (total increase of 43.96% with PAAC), which enhanced the adsorption capacity of PAAC by 58.59%. The adsorption isotherms of PAAC and M-PAAC were described well using the Temkin model, while the intraparticle diffusion model fitted the Cd(II) adsorption kinetics best. Precipitation with minerals was a crucial factor for Cd(II) adsorption on activated carbon (50.40% for PAAC and 40.41% for M-PAAC). Meanwhile, the Cd(II) adsorption by M-PAAC was also dominated by complexation with oxygen-containing functional groups (33.60%). This research provides a method for recovering wetland plant biomass to prepare activated carbon and efficiently treat Cd-containing wastewater.
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Affiliation(s)
- Li Jiang
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
- Shandong
Key Laboratory of Water Pollution Control and Resource Reuse, School
of Environmental Science and Engineering, Shandong University, Jinan 250100, China
| | - Yating Chen
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Yifei Wang
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Jiayang Lv
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Peng Dai
- Department
of Civil & Environmental Engineering, South Dakota State University, Brookings, South Dakota 57007, United States
| | - Jian Zhang
- College
of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- Shandong
Key Laboratory of Water Pollution Control and Resource Reuse, School
of Environmental Science and Engineering, Shandong University, Jinan 250100, China
| | - Ying Huang
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
| | - Wenzhou Lv
- School
of Civil and Environmental Engineering, Ningbo University, Ningbo 315211, China
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Herce-Sesa B, López-López JA, Moreno C. Advances in ionic liquids and deep eutectic solvents-based liquid phase microextraction of metals for sample preparation in Environmental Analytical Chemistry. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116398] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Ahmed W, Mehmood S, Núñez-Delgado A, Ali S, Qaswar M, Shakoor A, Mahmood M, Chen DY. Enhanced adsorption of aqueous Pb(II) by modified biochar produced through pyrolysis of watermelon seeds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 784:147136. [PMID: 33892324 DOI: 10.1016/j.scitotenv.2021.147136] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 04/10/2021] [Accepted: 04/10/2021] [Indexed: 06/12/2023]
Abstract
A biochar (BC) was obtained by the pyrolysis of watermelon seeds (WM) in nitrogen environment. In addition, a modified biochar (HP-BC) was obtained by means of H2O2 treatment of BC. Later on, both kinds of biochar (BC and HP-BC) were characterized and compared as regards their potential for Pb(II) adsorption from wastewater. Characterization was performed by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), Zeta potential analysis, elemental mapping, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Pb(II) adsorption characteristics for HP-BC and BC as were evaluated as a function of solution pH, contact time and Pb(II) equilibrium concentration, using kinetic and thermodynamic studies, as well as adsorption isotherms. Regarding kinetics, the pseudo-second order model showed good fitting to experimental data. Based on the Langmuir model, the maximum Pb(II) adsorption capacities were calculated as 44.32 mg g-1 and 60.87 mg g-1 for BC and HP-BC, respectively. Thermodynamic study indicated that Pb(II) adsorption onto BC and HP-BC was spontaneous and primarily governed by chemisorption and surface complexation. In view of the results, the H2O2 modification of the watermelon seeds biochar can be considered as a promising and cost effective approach as regards Pb(II) removal from water/wastewater, which would not cause adverse impacts on the surrounding environments. Overall, it can be seen as a procedure promoting the effective recycling of a waste/by-product, in line of the precepts of the circular economy, aiding to protect human and environmental health.
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Affiliation(s)
- Waqas Ahmed
- Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Sajid Mehmood
- Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | - Sehrish Ali
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Muhammad Qaswar
- Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Awais Shakoor
- Department of Environment and Soil Sciences, University of Lleida, 25198, Lleida, Spain
| | - Mohsin Mahmood
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest Agriculture and Forestry (A & F) University, Yangling 712100, China
| | - Di-Yun Chen
- Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China; School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.
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Yu W, Hu J, Yu Y, Ma D, Gong W, Qiu H, Hu Z, Gao HW. Facile preparation of sulfonated biochar for highly efficient removal of toxic Pb(II) and Cd(II) from wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 750:141545. [PMID: 33182166 DOI: 10.1016/j.scitotenv.2020.141545] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 08/04/2020] [Accepted: 08/04/2020] [Indexed: 05/28/2023]
Abstract
Biochar is deemed as the ideal material for the effective removal of heavy metals in wastewater treatment. Herein, we developed a facile one-step solvothermal method for the preparation of sulfonated biochar (SBC) from Axonopus compressus under a low-temperature condition. FTIR and XPS analysis demonstrate that plenty of -OH, -COOH and -SO3H moieties are generated on the surface of SBC during the sulfonation process. Due to high electronegativity and strong complexation of these moieties, SBC can rapidly adsorb Pb(II) and Cd(II) with capacities of 191.07 and 85.76 mg/g respectively within 5 min. SBC can be reused for 5 cycles with a negligible loss of adsorption capacity. In addition, different biomass-based biochars are prepared under the identical experimental conditions, and they are successfully applied in the treatments of Pb(II) and Cd(II). The satisfying results indicate that one-step low-temperature sulfonation could be a universal method, and various types of biomass waste could be the abundant, effective, economical material source for the treatment of environmental heavy metal pollution in future.
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Affiliation(s)
- Weibin Yu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Jiwen Hu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Department of Physics, Chemistry and Biology, Linköping University, Linköping 58183, Sweden.
| | - Yichang Yu
- Research Center of Environmental Engineering Technology, Chongqing Research Academy of Environmental Science, Chongqing 401147, China
| | - Dongdong Ma
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Wenting Gong
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Hongxuan Qiu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Zhangjun Hu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China; Department of Physics, Chemistry and Biology, Linköping University, Linköping 58183, Sweden
| | - Hong-Wen Gao
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Heavy Metal Extraction under Environmentally Relevant Conditions Using 3-Hydroxy-2-Naphthoate- Based Ionic Liquids: Extraction Capabilities vs. Acute Algal Toxicity. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10093157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We investigated the applicability of three task-specific ionic liquids (ILs) as heavy metal extracting agents by contrasting extraction capabilities with algal toxicity. The compounds tested were trihexyltetradecylphosphonium-, methyltrioctylphosphonium- and methyltrioctylammonium 3-hydroxy-2-naphthoates. Experiments were performed to assess if these ILs can provide environmentally safe residual concentrations of the target metals after extraction. Both pure water and natural mineral water samples were spiked with 20 µg L−1 of Cu, Ag, Cd, Hg and Pb, respectively. Quantitative extraction (> 99%) of Hg and Ag was achieved. Cu and Hg were below the respective no-observed-effect-concentrations (NOECs) after extraction and Ag below 0.03 µg L−1. Acute toxicity assays were conducted using two freshwater green algae Raphidocelis subcapitata and Tetradesmus obliquus. Growth inhibition and maximum photochemical quantum yield of photosystem II after 72 h were assessed. ILs were less toxic than similar compounds, but still must be classified as acute toxicants for algae. An inhibiting effect on both growth and chlorophyll fluorescence was observed. The leaching of the ILs into the samples remains a limitation regarding their environmental-friendly applicability. Nonetheless, the extremely efficient removal of Cu, Ag and Hg under environmentally relevant conditions calls for further research, which should focus on the immobilization of the ILs.
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Scheiflinger F, Habibi M, Zeynolabedini E, Plessl C, Wallner G. Radionuclide extraction with different ionic liquids. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06807-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Abstract
10 ionic liquids based on 3 different cations and 5 anions were investigated for radionuclide extraction from aqueous solutions. While uranium and 210Po were extracted with satisfying yields irrespective of the feed solution pH, 234Th, 226Ra and 210Pb extraction yields were rather low. The contact time necessary for near to complete extraction was determined as well as the conditions for successful back-extraction. The loading capacities of the ionic liquids for uranium were very high and depended on the uranyl counter-ion. From the leaching of the ionic liquids into the aqueous phase the predominant extraction mechanisms were derived.
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Affiliation(s)
- Frederik A. Hansen
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
| | - Stig Pedersen-Bjergaard
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
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