Efficient removal of tetracycline in water using modified eggplant straw biochar supported green nanoscale zerovalent iron: synthesis, removal performance, and mechanism

被引：4

作者：

Huang, Guofu ^{[1
,2
,3
]}

Wang, Mianmian ^{[1
,2
,3
]}

Liu, Qing ^{[1
,2
,3
]}

Zhao, Shasha ^{[1
,2
,3
]}

Liu, Haijian ^{[1
,2
,3
]}

Liu, Fangfang ^{[1
,2
]}

Liu, Jun ^{[1
,2
]}

机构：

[1] Weifang Univ Sci & Technol, Sch Chem Engn & Environm, Weifang 262700, Peoples R China

[2] Shandong Engn Lab Clean Utilizat Chem Resources, Weifang 262700, Peoples R China

[3] Weifang Key Lab Chem Wastewater Pollut Control & R, Weifang 262700, Peoples R China

来源：

RSC ADVANCES | 2024年 / 14卷 / 05期

关键词：

ZERO-VALENT IRON; HYDROTHERMAL CARBONIZATION; NANOPARTICLES; DEGRADATION; ADSORPTION; COMPOSITE; PYROLYSIS; INSIGHTS; COPPER;

D O I：

10.1039/d3ra08417e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel NaOH modified eggplant straw biochar supported green nanoscale zerovalent iron (P-nZVI/ESBC) composite was synthesized and its removal performance and reaction mechanism for tetracycline (TC) in water were investigated. Multiple characterizations showed that the prepared P-nZVI/ESBC composite contained oxygen-containing functional groups (hydroxyl, carbonyl, and carboxyl groups) and Fe species (nZVI and its oxides). The dosage of composite, temperature, and solution pH significantly affected the removal capacity of the P-nZVI/ESBC composite for TC. The Avrami fraction-order kinetic model and Sips adsorption isotherm model can fit well the removal process of TC by the P-nZVI/ESBC composite, indicating that the adsorption behavior of TC involved multiple adsorption mechanisms and chemical adsorption might occur. The maximum adsorption capacity of the P-nZVI/ESBC composite for TC was 304.62 mg g-1. The adsorption and reductive degradation were the dominant mechanisms of TC removal by the P-nZVI/ESBC composite. This work offers abundant information on the application of eggplant straw to manufacture biochar-based composites for the efficient removal of antibiotic contaminants from aquatic environments. A novel NaOH modified eggplant straw biochar supported green nanoscale zerovalent iron (P-nZVI/ESBC) composite was synthesized and its removal performance and reaction mechanism for tetracycline (TC) in water were investigated.

引用

页码：3567 / 3577

页数：11

共 46 条

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