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Removal of acetaminophen from synthetic wastewater in a fixed-bed column adsorption using low-cost coconut shell waste pretreated with NaOH, HNO3, ozone, and/or chitosan

Lin, Yanyan and Kurniawan, Tonni Agustiono and Zhu, Mengting and Tong, Ouyang and Avtar, Ram and Othman, Mohd. Hafiz Dzarfan and Mohammad, Balsam T. and Albadarin, Ahmad B. (2018) Removal of acetaminophen from synthetic wastewater in a fixed-bed column adsorption using low-cost coconut shell waste pretreated with NaOH, HNO3, ozone, and/or chitosan. Journal of Environmental Management, 226 . pp. 365-376. ISSN 0301-4797

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Official URL: http://dx.doi.org/10.1016/j.jenvman.2018.08.032

Abstract

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, HNO3, 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) > HNO3-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.

Item Type:Article
Uncontrolled Keywords:agricultural waste, endocrine disruptors, low-cost adsorbent, pharmaceuticals and personal care product (PPCPs), water treatment
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:85435
Deposited By: Yanti Mohd Shah
Deposited On:30 Jun 2020 16:45
Last Modified:30 Jun 2020 16:45

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