文献类型：期刊文献

英文题名：Preparation of magnetic chitosan corn straw biochar and its application in adsorption of amaranth dye in aqueous solution

作者：Wang, Fang[1];Li, Long[2];Iqbal, Jibran[3];Yang, Zhuoran[1];Du, Yiping[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Henan Acad Sci, Zhengzhou, Peoples R China;[3]Zayed Univ, Coll Nat & Hlth Sci, Abu Dhabi, U Arab Emirates

年份：2022

卷号：199

起止页码：234

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20240815601113);WOS:【SCI-EXPANDED(收录号:WOS:000784245500007)】；

基金：Acknowledgment The research was supported by the research cluster grant R20142 from Zayed University, Abu Dhabi, United Arab Emirates.

语种：英文

外文关键词：Biochar; Magnetic; Chitosan; Adsorption; Amaranth dye

摘要：In this study, the magnetic chitosan biochar (MCB) was magnetized by chemical coprecipitation after loading chitosan with Schiff base reaction. The prepared MCB was used to remove amaranth dye in solution. The syn-thesized MCB was characterized to define its surface morphology and specific elements. The amaranth dye adsorption system was optimized by varying the contact time, pH, and initial concentration. The adsorption of MCB on amaranth dye was measured in a wide pH range. According to Zeta potential, the surface of MCB was positively charged in the acidic pH region, which was more conducive to the adsorption of anionic amaranth dye. In addition, the adsorption data was fitted with the pseudo-first-order model and Langmuir adsorption model and the maximum adsorption capacity reached 404.18 mg/g. The adsorption efficiency of MCB was still above 95% after three cycles of adsorption and desorption. The removal percentage in the real sample of amaranth dye by MCB was within 94.5-98.6% and the RSD was within 0.14-1.08%. The MCB adsorbent with advantages of being easy to prepare, easy to separate from solution after adsorption, has good adsorption performance for amaranth dye and is effective potential adsorbent to remove organic anionic dye in wastewater.