Removal of acetaminophen from synthetic wastewater in a fixed-bed column adsorption using low-cost coconut shell waste pretreated with NaOH, HNO 3 , ozone, and/or chitosan.

Autor: Yanyan L; Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University (XMU), Xiamen, 361102, Fujian Province, China., Kurniawan TA; Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University (XMU), Xiamen, 361102, Fujian Province, China. Electronic address: tonni@xmu.edu.cn., Zhu M; Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University (XMU), Xiamen, 361102, Fujian Province, China., Ouyang T; Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University (XMU), Xiamen, 361102, Fujian Province, China., Avtar R; Faculty of Environment and Earth Science, Hokkaido University, Sapporo, Japan., Dzarfan Othman MH; Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, UTM Johor Bahru, Johor, Malaysia., Mohammad BT; Pharmaceutical and Chemical Engineering Department, School of Applied Medical Sciences, German Jordanian University, Amman, 11180, Jordan., Albadarin AB; Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2018 Nov 15; Vol. 226, pp. 365-376. Date of Electronic Publication: 2018 Aug 20.
DOI: 10.1016/j.jenvman.2018.08.032
Abstrakt: Acetaminophen (Ace) is a trace pollutant widely found in sewage treatment plant (STP) wastewater. We test the feasibility of coconut shell waste, a low cost adsorbent from coconut industry, for removing Ace from synthetic solution in a fixed-bed column adsorption. To enhance its performance, the surface of granular activated carbon (GAC) was pre-treated with NaOH, HNO 3 , ozone, and/or chitosan respectively. The results show that the chemical modification of the GAC's surface with various chemicals has enhanced its Ace removal during the column operations. Among the modified adsorbents, the ozone-treated GAC stands out for the highest Ace adsorption capacity (38.2 mg/g) under the following conditions: 40 mg/L of Ace concentration, 2 mL/min of flow rate, 45 cm of bed depth. Both the Thomas and the Yoon-Nelson models are applicable to simulate the experimental results of the column operations with their adsorption capacities: ozone-treated GAC (20.88 mg/g) > chitosan-coated GAC (16.67 mg/g) > HNO 3 -treated GAC (11.09 mg/g) > NaOH-treated GAC (7.57 mg/g) > as-received GAC (2.84 mg/g). This suggests that the ozone-treated GAC is promising and suitable for Ace removal in a fixed-bed reactor.
(Copyright © 2018 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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