其他题名Biomass feedstocks and carbonization methods affect antibiotic adsorption on biochar
冯丽蓉1,2; 校亮1
; 袁国栋3,4; 毕冬雪1; 韦婧1发表期刊中国环境科学
ISSN1000-6923
2020
卷号40期号:3页码:1156-1165
关键词生物炭制炭方式土霉素磺胺甲恶唑吸附
研究领域Environmental Sciences & Ecology
英文摘要Biochar has been reported as a useful adsorbent of organic contaminants. Here, reed, cotton stalk, and bamboo willow were selected as feedstocks to produce biochars via oxygen-limited or aerobic methods for carbonization. The obtained biochars were first characterized for their physical and chemical properties and then investigated for their performance in adsorbing oxytetracycline (OTC) and sulfamethoxazole (SMX). It was found that both feedstocks and carbonization methods affected OTC and SMX adsorption. Reed and cotton stalks were better carbonized under oxygen-limited conditions to produce biochars (O_2-limited biochars), whereas bamboo willow was suitable to produce biochars via aerobic carbonization (aerobic biochar). The aerobic biochar adsorbed 11.98 and 10.12mg/g of OTC and SMX, respectively, from a solution with an initial concentration of 50mg/L of the biotics. Batch adsorption experiments and the Fourier transform infrared spectroscopic analysis indicated that pi-pi electron donor-acceptor interaction was the primary mechanisms for OTC and SMX adsorption on the aerobic biochar. Electrostatic attraction further promoted OTC adsorption on aerobic biochar at high pHs, whereas pore filling could contribute to SMX adsorption. This work showed that aerobic biochar were better adsorbents of OTC and SMX than O_2-limited biochars, and suggested that biochar adsorbents can be tailor-made for different contaminants by judicious selection of feedstocks and carbonization processes.
中文摘要为研究原料和制炭方法对生物炭吸附抗生素性能的影响,选取芦苇、棉杆和竹柳,经限氧和曝氧法制备得到生物炭,研究其对土霉素(OTC)和磺胺甲恶唑(SMX)的吸附性能及其吸附机理.研究发现:物源特征和制炭方法共同决定了生物炭对抗生素的吸附功效.芦苇和棉秆宜采用限氧法制备成炭,竹柳宜采用曝氧法制备成炭;整体上以曝氧竹柳炭对抗生素的吸附性能最优,单一浓度(50mg/L)下,其对OTC和SMX的吸附量分别为11.98和10.12mg/g.批吸附实验和傅里叶变换红外光谱分析表明,pi-pi EDA相互作用是竹柳炭吸附抗生素的主要机理.静电吸引有助于高pH值下曝氧竹柳炭对OTC的吸附,而孔隙填充可能对曝氧竹柳炭吸附SMX起到促进作用.曝氧竹柳炭对抗生素的吸附性能优于其他炭品,是去除水体抗生素的优选材料.
文章类型Article
资助机构国家重点研发计划项目; 烟台市重点研发计划项目
收录类别CSCD
语种中文
CSCD记录号CSCD:6688635
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30369
专题中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
作者单位1.中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,山东烟台264003;
2.中国科学院大学,北京100049;
3.广东省环境健康与资源利用重点实验室,广东肇庆526061;
4.肇庆学院环境与化学工程学院,广东肇庆526061
推荐引用方式
GB/T 7714冯丽蓉,校亮,袁国栋,等. 原料和制炭方式对生物炭吸附抗生素的影响[J]. 中国环境科学,2020,40(3):1156-1165.
APA冯丽蓉,校亮,袁国栋,毕冬雪,&韦婧.(2020).原料和制炭方式对生物炭吸附抗生素的影响.中国环境科学,40(3),1156-1165.
MLA冯丽蓉,et al."原料和制炭方式对生物炭吸附抗生素的影响".中国环境科学 40.3(2020):1156-1165.
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