Renewable and robust biomass waste-derived Co-doped carbon aerogels for PMS activation: Catalytic mechanisms and phytotoxicity assessment

被引：51

作者：

Geng, Guomin ^{[1
]}

Gao, Yanhui ^{[1
]}

Zhang, Zhitong ^{[1
]}

Gao, Kangqi ^{[1
]}

Zhang, Wenyu ^{[1
]}

Song, Jianjun ^{[1
]}

机构：

[1] Qilu Univ Technol, Shandong Acad Sci, Sch Chem & Pharmaceut Engn, Shandong Prov Key Lab Mol Engn, Jinan 250353, Peoples R China

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2021年 / 220卷

基金：

中国国家自然科学基金;

关键词：

Carbon aerogel; PMS activation; Monolithic catalyst; Phytotoxicity assessment; 2; 4-Dichlorophenol degradation; PEROXYMONOSULFATE ACTIVATION; GRAPHENE AEROGEL; DEGRADATION; EFFICIENT; WATER; OXIDATION; KINETICS; REMOVAL; HYBRID; FOAM;

D O I：

10.1016/j.ecoenv.2021.112381

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Developing monolithic carbon-based catalyst with low cost, easy separation and high performance to degrade pollutants via PMS activation is crucial. In this work, a series of novel monolithic Me-CA catalysts based on biomass derived carbon aerogel were prepared by hydrothermal method using waste watermelon peel as raw material. Co-CA catalyst showed excellent performance to activate PMS for 2, 4-DCP degradation in different temperature and different water matrices. Different pollutants, such as ciprofloxacin (CIP), bisphenol A (BPA), and 2, 4-dichlorophenoxyacetic acid (2, 4-D) could also be removed in the Co-CA/PMS system. As expected, CoCA could be easily separated from degraded solution, and show high stability and reusability for PMS activation with a lower cobalt leaching. Based on the results of the quenching tests, electron paramagnetic resonance (EPR) spectra, Chronoamperometric test (i-t curves) and electro-chemical impedance spectroscopy (EIS), the PMS activation mechanism was proposed. The phytotoxicity assessment determined by germination situation of mung bean indicated that PMS activation could eliminate the hazards of 2, 4-D. Therefore, this study provides a low cost, efficient and environmental-friendly monolithic biomass carbon aerogel catalyst for different pollutants degradation, which further advances monolithic catalyst for practical wastewater treatment.

引用

页数：12

共 61 条

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