Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jclepro.2018.10.027
Title: Removal of nitrate and phosphate by chitosan composited beads derived from crude oil refinery waste: Sorption and cost-benefit analysis
Authors: Cui Xiaoqiang
Li He
Yao Zhiyi 
Shen Ye 
He Zhenli
Yang Xiaoe
Ng How Yong 
Wang Chi-Hwa 
Keywords: Adsorbent
Carbon waste
Cost-benefit analysis
Nitrate
Phosphate
Issue Date: 10-Jan-2019
Citation: Cui Xiaoqiang, Li He, Yao Zhiyi, Shen Ye, He Zhenli, Yang Xiaoe, Ng How Yong, Wang Chi-Hwa (2019-01-10). Removal of nitrate and phosphate by chitosan composited beads derived from crude oil refinery waste: Sorption and cost-benefit analysis. Journal of Cleaner Production 207 : 846-856. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jclepro.2018.10.027
Abstract: A granular composite sorbent (LC-CF) was synthesized from acid-leached carbon waste using chitosan and FeCl3, and its feasibility for nitrate and phosphate removal was investigated in this study. The sorption data was well described by the pseudo-second-order kinetic model, and the maximum sorption capacity of LC-CF predicted by Langmuir model for nitrate and phosphate were 41.90 mg g?1 and 62.72 mg g?1, respectively. In comparison, LC-CF had a greater affinity for phosphate and exhibited a better reusability for nitrate removal during the sorption-desorption cycles. Ion exchange, electrostatic interaction, and hydrogen bond are the potential sorption mechanisms. In light of the cost-benefit analysis, the proposed treatment of carbon waste was more economically feasible as compared with existing incineration scheme. These results illuminated that synthesis of granular sorbent with carbon waste could achieve the harmless disposal of hazardous industrial waste as well as the production of value-added sorbent for water treatments. © 2018 Elsevier Ltd
Source Title: Journal of Cleaner Production
URI: https://scholarbank.nus.edu.sg/handle/10635/168176
ISSN: 0959-6526
1879-1786
DOI: 10.1016/j.jclepro.2018.10.027
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