Jiawei Dai1, Xiangfu Meng2, Yuhu Zhang3, Yunjie Huang1. 1. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China. 2. Department of Chemistry, Capital Normal University, Beijing 100048, China. 3. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China. Electronic address: zhang_yuhu@163.com.
Abstract
Rice straw derived biochar shows low-cost superiority as a potential adsorbent in tetracycline (TC) removal, but limited by its poor adsorption capacity and N, P leaking risk. Herein, an alkali-acid combined and magnetization method was proposed for its modification. The sorption kinetic and isotherm data showed modification enhanced the performance for tetracycline removal with adsorption capacity up to 98.33 mg·g-1. The strong adsorption mechanisms were dominated by hydrogen bonding and pore-filling effect due to the increase of specific surface area and pore volume. Furthermore, the effect of pH was insignificant over a pH range from 3 to 10. The strong competition between ionic and TC was identified, where Ca2+ and PO43- markedly inhibited the sorption. The enhanced TC adsorption, strong N and P removal, easy magnetic recovery, and good reusability in water samples entrusted it with good potential for wastewater treatment and rice straw resource disposal.
n class="Species">Rice straw derived biochar shows low-cost superiority as a potenpan>tial adsorbenpan>t in pan> class="Chemical">tetracycline (TC) removal, but limited by its poor adsorption capacity and N, P leaking risk. Herein, an alkali-acid combined and magnetization method was proposed for its modification. The sorption kinetic and isotherm data showed modification enhanced the performance for tetracycline removal with adsorption capacity up to 98.33 mg·g-1. The strong adsorption mechanisms were dominated by hydrogen bonding and pore-filling effect due to the increase of specific surface area and pore volume. Furthermore, the effect of pH was insignificant over a pH range from 3 to 10. The strong competition between ionic and TC was identified, where Ca2+ and PO43- markedly inhibited the sorption. The enhanced TC adsorption, strong N and P removal, easy magnetic recovery, and good reusability in water samples entrusted it with good potential for wastewater treatment and rice straw resource disposal.
Authors: Mubark Alshareef; Razan M Snari; Omaymah Alaysuy; Afrah M Aldawsari; Hana M Abumelha; Hanadi Katouah; Nashwa M El-Metwaly Journal: ACS Omega Date: 2022-05-05
Authors: Wu Junfeng; Hou Bowen; Wang Xiaoqing; Liu Zuwen; Wang Zhaodong; Liu Biao; Li Songya; Gao Hongbin; Zhu Xinfeng; Mao Yanli Journal: RSC Adv Date: 2022-04-19 Impact factor: 3.361