Pharmaceuticals and personal care products removal from aqueous solution by nitrogen-functionalized carbon adsorbent derived from pomelo peel waste

2019 9th International Conference on Future Environment and Energy

生态环境科学;能源学

Prarat, P.^1 ; Hadsakunnee, K.^2 ; Padejepan, L.^2 ; Inlee, P.^1 ; Wongpaisan, S.^1 ; Prasertboonyai, K.^1

Faculty of Science, Energy and Environment, King Mongkut's University of Technology North Bangkok, Rayong Campus, Rayong, Thailand^1

Department of Agro-Industrial Food and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok, Bangkok, Thailand^2

关键词: Adsorbent materials;    Adsorption behavior;    Carbon adsorbents;    Freundlich models;    Langmuir models;    Oxytetracyclines (OTC);    Pharmaceuticals and personal care products;    Pseudo-second-order kinetic models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/257/1/012019/pdf
DOI  :  10.1088/1755-1315/257/1/012019

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aim of this work is to investigate the feasibility of the preparation of nitrogen-functionalized adsorbent material from waste pomelo peel by using diammonium hydrogen orthophosphate (DAP) activation for the removal of Pharmaceuticals and personal care products (PPCPs) such as carbamazepine (CBZ), clofibric acid (CFA) and oxytetracycline (OTC). Our results showed that the adsorbent prepared by chemical activation in the presence of DAP lead to mesoporous material. The adsorbent exhibits acid and basic groups at its porous surface. The kinetic data are found to follow a pseudo-second order kinetic model. The Langmuir model provided a good description of the experimental isotherms for CBZ, whereas CFA and OTC adsorption behavior rather follow the Freundlich model. Moreover, the PPCPs adsorption was found to be strongly dependent on the pH of solution as well as the pKa of both adsorbents and PPCPs. The strong adsorptive interaction between PPCPs and P-DAP was mainly attributed to the combination interactions of electrostatic interaction, hydrogen bonding and π-π interactions.