دورية أكاديمية
Adsorption of organic and inorganic arsenic from aqueous solution: Optimization, characterization and performance of Fe-Mn-Zr ternary magnetic sorbent.
| العنوان: | Adsorption of organic and inorganic arsenic from aqueous solution: Optimization, characterization and performance of Fe-Mn-Zr ternary magnetic sorbent. |
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| المؤلفون: | Zou SW; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; Shanghai Emperor of Cleaning Hi-tech Limited Company, 1230 North Zhongshan Road, Shanghai, 200437, China., Koh KY; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore., Chen Z; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore., Wang YY; Shanghai Emperor of Cleaning Hi-tech Limited Company, 1230 North Zhongshan Road, Shanghai, 200437, China., Chen JP; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore, 117411, Singapore; NUS Graduate School - Integrative Sciences and Engineering Programme, National University of Singapore, Singapore 21 Lower Kent Ridge Road, Singapore, 119077, Singapore. Electronic address: jpaulchen@u.nus.edu., Zheng YM; Department of Civil and Environmental Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore, 119260, Singapore; CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China. Electronic address: ymzheng@iue.ac.cn. |
| المصدر: | Chemosphere [Chemosphere] 2022 Feb; Vol. 288 (Pt 3), pp. 132634. Date of Electronic Publication: 2021 Oct 23. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0320657 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1298 (Electronic) Linking ISSN: 00456535 NLM ISO Abbreviation: Chemosphere Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: Oxford : Elsevier Science Ltd Original Publication: Oxford, New York, : Pergamon Press. |
| مواضيع طبية MeSH: | Arsenic*/analysis , Water Pollutants, Chemical*/analysis , Water Purification*, Adsorption ; Humans ; Hydrogen-Ion Concentration ; Kinetics ; Magnetic Phenomena ; Water |
| مستخلص: | Arsenic is a highly toxic pollutant and exists in inorganic and organic forms in groundwater and industrial wastewater. It is of great importance to reduce the arsenic content to lower levels in the water (e.g., <10 ppb for drinking) in order to minimize risk to humans. In this study, a Fe-Mn-Zr ternary magnetic sorbent was fabricated via precipitation for removal of inorganic and organic arsenate. The synthesis of sorbent was optimized by Taguchi method, which leads to an adsorbent with higher adsorption capacity. The adsorption of As(V) was pH dependent; the optimal removal was achieved at pH 2 and 5 for inorganic and organic As(V), respectively. Contact time of 25 h was sufficient for complete adsorption of both inorganic and organic As(V). The adsorption isotherm study revealed that the adsorbent performed better in sequestration of inorganic As(V) than that of organic As(V); both adsorption followed the Langmuir isotherm with maximum adsorption capacities of 81.3 and 16.98 mg g -1 for inorganic and organic As(V), respectively. The existence of anions in the water had more profound effect on the adsorption of organic As(V) than the inorganic As(V). The co-existing silicate and phosphate ions caused significantly negative impacts on the adsorption of both As(V). Furthermore, the existence of humic acid caused the deterioration of inorganic As(V) removal but showed insignificant impact on the organic As(V) adsorption. The mechanism study demonstrated that ion exchange and complexation played key roles in arsenic removal. This study provides a promising magnetic adsorptive material for simultaneous removal of inorganic and organic As(V). (Copyright © 2021 Elsevier Ltd. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Anions; Competitive matters; Groundwater; Ion exchange; Natural organic matters |
| المشرفين على المادة: | 0 (Water Pollutants, Chemical) 059QF0KO0R (Water) N712M78A8G (Arsenic) |
| تواريخ الأحداث: | Date Created: 20211026 Date Completed: 20211217 Latest Revision: 20211217 |
| رمز التحديث: | 20240628 |
| DOI: | 10.1016/j.chemosphere.2021.132634 |
| PMID: | 34699882 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1879-1298 |
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| DOI: | 10.1016/j.chemosphere.2021.132634 |