Efficacy of carbonaceous nanocomposites for sorbing ionizable antibiotic sulfamethazine from aqueous solution

被引：328
作者：
Zhang, Chen [1 ,2 ]
Lai, Cui [1 ,2 ]
Zeng, Guangming [1 ,2 ]
Huang, Danlian [1 ,2 ]
Yang, Chunping [1 ,2 ]
Wang, Yang [1 ,2 ]
Zhou, Yaoyu [1 ,2 ]
Cheng, Min [1 ,2 ]
机构：
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China
来源：
WATER RESEARCH | 2016年 / 95卷
基金：
中国国家自然科学基金;
关键词：
Sorption; Carbonaceous nanocomposites; Sulfamethazine; Aqueous solution; Aging; WASTE-WATER TREATMENT; ACTIVATED CARBON; VETERINARY ANTIBIOTICS; LIGNOCELLULOSIC WASTE; BLACK CARBON; REMOVAL; ADSORPTION; SORPTION; DEGRADATION; SULFONAMIDE;
D O I：
10.1016/j.watres.2016.03.014
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This paper investigated the key factors and mechanisms of sulfamethazine (SMT) sorption on a novel carbonaceous nanocomposite, and the effects of harsh aging on SMT sorption in the presence and absence of soil and before as well as after aging. The carbonaceous nanocomposites were synthesized by dip-coating straw biomass in carboxyl functionalized multi-walled carbon nanotubes solution and then pyrolyzed at 300 degrees C and 600 degrees C in the absence of air. The sorption performance of high temperature carbonaceous nanocomposite on SMT was excellent, as measured sorption distribution coefficient in the order of 10(3)-10(5.5) L kg(-1). Carbonaceous nanocomposites were aged either alone or mixed with soil via exposure to nutrients and soil extract (biological aging) or 80 degrees C for 100 d (chemical aging). No obvious effects of harsh aging on SMT sorption were observed in the presence of soil and/or biological and chemical aging. The primary mechanisms for SMT sorption included partition caused by Van der Waals forces and adsorption caused by hydrogen bonding and pi-pi electron-donor-acceptor interaction. Comprehensively considering the cost, renewability, and the application to real water samples, the carbonaceous nanocomposites have potential in removal of SMT and possibly other persistent organic pollutants from wastewater. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：103 / 112
页数：10
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