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Zhang L, Xu M, Li L. Amino-Functionalized Lotus Stem Hydrochar for Rapid Adsorption and In Situ Detoxification of Cr(VI) from Water. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6016-6025. [PMID: 38448398 DOI: 10.1021/acs.langmuir.4c00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The development of low-cost, efficient, and environmentally friendly adsorbents is the key to highly toxic hexavalent chromium [Cr(VI)] removal by adsorption. In this paper, amino-functionalized lotus stem hydrochar (ALSHC) was prepared from an agricultural waste lotus stem (LS) for the adsorption removal of Cr(VI) from water. The effects of the initial Cr(VI) concentration, contact time, temperature, coexisting anions, and reusability of ALSHC on Cr(VI) removal were examined in detail. The adsorption mechanism was further discussed by investigating the impact of the solution's initial pH, the relation between the pH change in solution and Cr(VI) removal during the process, the changes of chromium (Cr) species in solution and on ALSHC during adsorption, and the XPS characterization. The results demonstrated that ALSHC effectively removed Cr(VI) from water with rapid adsorption (the removal rate reached 80.90% in only 10 min) and in situ detoxification. Most importantly, ALSHC still had better adsorption performance (adsorption capacity of 30.95 mg g-1) than commercially activated carbon, even at pH = 9.00. The adsorption of Cr(VI) by ALSHC accorded with the pseudo-second-order kinetic model and Langmuir isotherm model, indicating a monolayer chemisorption process. The adsorption process was shown to be spontaneous and endothermic based on the thermodynamic characteristics (ΔG0 < 0, ΔH0 > 0, and ΔS0 > 0). The mechanism of Cr(VI) removal was mainly composed of three parts in sequence: Firstly, Cr(VI) in solution was quickly adsorbed onto ALSHC with protonated -NH2 through electrostatic attraction; subsequently, the adsorbed Cr(VI) on ALSHC was mostly detoxicated by in situ reduction; and finally, the reduced Cr(III) and the remaining Cr(VI) were fixed on the ALSHC surface by complexation. The prepared ALSHC displayed a certain superiority in Cr(VI) adsorption and had the prospect of further development.
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Affiliation(s)
- Ling Zhang
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China
| | - Min Xu
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China
| | - Lingzhen Li
- School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China
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Su X, He J, Khan MA, Chang K, Liu Y, Guo G, Li X, Jin F, Kuang M, Gouda S, Huang Q. Potential Application Performance of Hydrochar from Kitchen Waste: Effects of Salt, Oil, Moisture, and pH. TOXICS 2023; 11:679. [PMID: 37624184 PMCID: PMC10459985 DOI: 10.3390/toxics11080679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/26/2023]
Abstract
The surge in kitchen waste production is causing food-borne disease epidemics and is a public health threat worldwide. Additionally, the effectiveness of conventional treatment approaches may be hampered by KW's high moisture, salt, and oil content. Hydrothermal carbonization (HTC) is a promising new technology to convert waste biomass into environmentally beneficial derivatives. This study used simulated KW to determine the efficacy of hydrothermal derivatives (hydrochar) with different salt and oil content, pH value, and solid-liquid ratio for the removal of cadmium (Cd) from water and identify their high heating value (HHV). The findings revealed that the kitchen waste hydrochar (KWHC) yield decreased with increasing oil content. When the water content in the hydrothermal system increased by 90%, the yield of KWHC decreased by 65.85%. The adsorption capacity of KWHC remained stable at different salinities. The KWHC produced in the acidic environment increases the removal efficiency of KWHC for Cd. The raw material was effectively transformed into a maximum HHV (30.01 MJ/kg). HTC is an effective and secure method for the resource utilization of KW based on the adsorption capacity and combustion characteristic indices of KWHC.
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Affiliation(s)
- Xuesong Su
- School of Ecology & Environment, Hainan University, Haikou 570228, China
| | - Jizu He
- School of Ecology & Environment, Hainan University, Haikou 570228, China
| | | | - Kenlin Chang
- Institute of Environmental Engineering, Department of Public Health, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;
| | - Yin Liu
- School of Ecology & Environment, Hainan University, Haikou 570228, China
| | - Genmao Guo
- School of Ecology & Environment, Hainan University, Haikou 570228, China
| | - Xiaohui Li
- Hainan Inspection and Detection Center for Modern Agriculture, Haikou 570100, China
| | - Fangming Jin
- School of Ecology & Environment, Hainan University, Haikou 570228, China
| | - Meijuan Kuang
- Hainan Pujin Environmental Engineeering, Haikou 570100, China
| | - Shaban Gouda
- Agricultural and Biosystems Engineering Department, Faculty of Agriculture, Benha University, Toukh 13736, Egypt
| | - Qing Huang
- School of Ecology & Environment, Hainan University, Haikou 570228, China
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Wang M, Chen Y, Zhang Y, Zhao K, Feng X. Selective removal of Cr(VI) by tannic acid and polyethyleneimine modified zero-valent iron particles with air stability. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:132018. [PMID: 37441863 DOI: 10.1016/j.jhazmat.2023.132018] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/23/2023] [Accepted: 07/06/2023] [Indexed: 07/15/2023]
Abstract
In this study, a new composite adsorbent for Cr(VI) removal was developed by immobilizing polyethyleneimine (PEI) on the surface of zero-valent iron (ZVI) particles with tannic acid (TA) as a stabilizer. The adsorbent (denoted as Fe-TA-PEI-10) was easy to prepare and regenerate, requiring no conditions for storage. It was found to be particularly effective for Cr(VI) removal from wastewater via reduction and adsorption. Electrochemical analysis revealed that TA significantly reduced the electron transfer resistance of Fe-TA-PEI-10 and reduced the highly toxic Cr(VI)to the less toxic Cr(III). In addition, PEI endowed amino groups to Fe-TA-PEI-10, raising the zero charge point (pHpzc) of Fe-TA-PEI-10 (pHpzc= 7.80), allowing it to adsorb Cr(VI) from the solution rapidly under electrostatic forces and chelating effects. The adsorption process was consistent with the pseudo-first-order model (R2 >0.99) and the Langmuir isotherm model (R2 >0.99), and the maximum adsorption capacity could reach 161.6 mg/g. In particular, this study presented for the first time that TA-modified Fe(0) had excellent stability in the air, and the adsorbent showed no decrease in performance for Cr(VI) removal even after exposure to the air for 30 days. When tested with a simulated electroplating rinsing wastewater, the Fe-TA-PEI-10 showed very high selectivity for Cr(VI) removal. The mechanism of Cr(VI) removal with Fe-TA-PEI-10 was found to be based on adsorption and reduction. This work provided a new scheme for developing efficient and long-lasting reactive adsorbent for Cr(VI) removal.
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Affiliation(s)
- Meng Wang
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China
| | - Yingbo Chen
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China.
| | - Yuanyuan Zhang
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China
| | - Ke Zhao
- School of Materials Science and Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China
| | - Xianshe Feng
- Department of Chemical Engineering, University of Waterloo, Waterloo N2L 3G1, Ontario, Canada
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Li X, Xiao Q, Shao Q, Li X, Kong J, Liu L, Zhao Z, Li R. Adsorption of Cd (II) by a novel living and non-living Cupriavidus necator GX_5: optimization, equilibrium and kinetic studies. BMC Chem 2023; 17:54. [PMID: 37316907 DOI: 10.1186/s13065-023-00977-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 05/30/2023] [Indexed: 06/16/2023] Open
Abstract
Biosorbents have been extensively studied for heavy metal adsorption due to their advantages of low cost and high efficiency. In the study, the living and non-living biomass of Cupriavidus necator GX_5 previously isolated were evaluated for their adsorption capacity and/or removal efficiency for Cd (II) through batch experiments, SEM and FT-IR investigations. The maximum removal efficiency rates for the live and dead biomass were 60.51% and 78.53%, respectively, at an optimum pH of 6, a dosage of 1 g/L and an initial Cd (II) concentration of 5 mg/L. The pseudo-second-order kinetic model was more suitable for fitting the experimental data, indicating that the rate-limiting step might be chemisorption. The Freundlich isotherm model fit better than the Langmuir isotherm model, implying that the adsorption process of both biosorbents was heterogeneous. FT-IR observation reflected that various functional groups were involved in Cd (II) adsorption: -OH, -NH, C=O, C-O and C-C groups for the living biomass and -OH, -NH, C-H, C = O, C-N and N-H groups for the dead biomass. Our results imply that non-living biosorbents have a higher capacity and stronger strength for absorbing Cd (II) than living biomass. Therefore, we suggest that dead GX_5 is a promising adsorbent and can be used in Cd (II)-contaminated environments.
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Affiliation(s)
- Xingjie Li
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China.
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun, 336000, China.
- Key Laboratory of Crop Growth and Development Regulation of Jiangxi Province, Yichun, 336000, China.
| | - Qiusheng Xiao
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun, 336000, China
- Key Laboratory of Crop Growth and Development Regulation of Jiangxi Province, Yichun, 336000, China
| | - Qin Shao
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
| | - Xiaopeng Li
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun, 336000, China
| | - Jiejie Kong
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
| | - Liyan Liu
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
| | - Zhigang Zhao
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun, 336000, China
| | - Rungen Li
- College of Life Science and Environmental Resources, Yichun University, Yichun, 336000, China
- Key Laboratory of Crop Growth and Development Regulation of Jiangxi Province, Yichun, 336000, China
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Han X, Wang Z, Lu N, Tang J, Lu P, Zhu K, Guan J, Feike T. Comprehensive study on the hydrochar for adsorption of Cd(II): preparation, characterization, and mechanisms. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:64221-64232. [PMID: 37061638 DOI: 10.1007/s11356-023-26956-9] [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: 01/11/2023] [Accepted: 04/07/2023] [Indexed: 05/11/2023]
Abstract
Hydrothermal carbonization process via converting invasive plants into functional materials may provide a novel strategy to comprehensively control and utilized the exotic invasive plants. In this study, Eupatorium adenophorum was utilized to fabricate the hydrochar via hydrothermal carbonization process, which was further applied to remove Cd(II). The results showed that the hydrochar was a mesoporous material with abundant O-containing functional groups (OFPs) on the surface. The adsorption isotherms were fitted by both the Langmuir and Freundlich models, and the maximum adsorption amount achieved 24.53 mg/g. The adsorption dynamics were governed by surface adsorption and film diffusion. pH and ionic strength can exert a strong influence on the adsorption efficiency. The mechanisms on the adsorption of Cd(II) on the hydrochar concluded the pore-filling effects, electrostatic interactions, ion exchange, precipitation, coordination with π electrons, and surface complexation with the OFPs, such as hydroxyl, carboxylic, phenol, acetyl, and ester groups. Thus, hydrothermal carbonization process may provide a promising technique to fabricate the hydrocar for the treatment of Cd(II), which may facilitate comprehensive control of invasive plants and boost to the carbon neutrality.
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Affiliation(s)
- Xu Han
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Zirui Wang
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Nan Lu
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
| | - Jiaqing Tang
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210046, People's Republic of China
| | - Ping Lu
- College of Resources and Environment, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ke Zhu
- School of Thermal Engineering, Shandong Jianzhu University, Jinan, 250000, People's Republic of China
| | - Jiunian Guan
- School of Environment, Northeast Normal University, Changchun, 130117, People's Republic of China.
| | - Til Feike
- Federal Research Centre for Cultivated Plants, Inst. for Strategies and Technology Assessment, Julius Kühn-Institut, 14532, Kleinmachnow, Germany
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