Microwave-assisted one-pot method preparation of ZnO decorated biochar for levofloxacin and Cr(VI) removal from wastewater

被引：28

作者：

Qin, Xiaojing ^{[1
]}

Tao, Rongrong ^{[2
]}

Cheng, Song ^{[2
,3
]}

Xing, Baolin ^{[2
,3
]}

Meng, Weibo ^{[2
]}

Nie, Yanhe ^{[2
]}

Zhang, Chuanxiang ^{[2
]}

Yu, Jianglong ^{[4
,5
]}

机构：

[1] Henan Polytech Univ, Sch Surveying & Land Informat Engn, Jiaozuo 454003, Peoples R China

[2] Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo 454003, Peoples R China

[3] Collaborat Innovat Ctr Coal Work Safety & Clean Hi, Jiaozuo 454003, Peoples R China

[4] Southeast Univ, Monash Univ Joint Grad Sch, Suzhou 215000, Peoples R China

[5] Suzhou Ind Pk Monash Res Inst Sci & Technol, Suzhou, Peoples R China

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2024年 / 208卷

关键词：

ZnO-BC; Levofloxacin; Cr(VI); Adsorbent; Photocatalyst; HEXAVALENT CHROMIUM; AQUEOUS-SOLUTION; CU(II) IONS; BIOMASS; EQUILIBRIUM; BIOSORPTION; PYROLYSIS; SORPTION; SYSTEM; STRAW;

D O I：

10.1016/j.indcrop.2023.117863

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

ZnO based-double functional biochar (ZnO-BC) derived pine sawdust is prepared by microwave heating using simple one-pot method for levofloxacin (LEV) and Cr(VI) removal from wastewater. ZnO-BC has well developed pore structure with BET surface area of 915.47 m2/g, which also has well ZnO crystalline. These characteristics make ZnO-BC available as the adsorbent and photocatalyst for LEV and Cr(VI) removal wastewater. LEV and Cr (VI) adsorption date fit well with the Hill and Pseudo-second order equation with LEV and Cr(VI) adsorption amount of 193.42 and 21.03 mg/g, respectively. The LEV and Cr(VI) adsorption behavior are determined by the chemisorption process. The hydrogen bond, n-n interaction, surface complexation, pore filling are responsible for LEV removal. While the hydrogen bonding, complexation and redox are crucial to the removal of Cr(VI) from wastewater. LEV removal is 85.72-97.19% at 15-25 mg/L at 120 min, and Cr(VI) removal is 72.62-99.9% at 40-60 mg/L at 75 min under UV irradiation. The possible photocatalytic mechanisms of the LEV and Cr(VI) are further investigated and analyzed.

引用

页数：10