Pyrolysis condition affected sulfamethazine sorption by tea waste biochars

被引：270

作者：

Rajapaksha, Anushka Upamali ^{[1
,2
,3
]}

Vithanage, Meththika ^{[1
,2
,3
]}

Zhang, Ming ^{[1
,2
,4
]}

Ahmad, Mahtab ^{[1
,2
,5
]}

Mohan, Dinesh ^{[6
]}

Chang, Scott X. ^{[7
]}

Ok, Yong Sik ^{[1
,2
,7
]}

机构：

[1] Kangwon Natl Univ, Korea Biochar Res Ctr, Chunchon 200701, South Korea

[2] Kangwon Natl Univ, Dept Environm Biol, Chunchon 200701, South Korea

[3] Inst Fundamental Studies, Chem & Environm Syst Modeling Res Grp, Kandy, Sri Lanka

[4] China Jiliang Univ, Dept Environm Engn, Hangzhou 310018, Zhejiang, Peoples R China

[5] King Saud Univ, Dept Soil Sci, Coll Food & Agr Sci, Riyadh 11451, Saudi Arabia

[6] Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi 110067, India

[7] Univ Alberta, Dept Renewable Resources, Edmonton, AB T6G 2M7, Canada

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 166卷

关键词：

Black carbon; Emerging contaminant; Low cost adsorbent; Charcoal; Veterinary antibiotics; ANTIMICROBIAL SULFATHIAZOLE; SULFONAMIDE ANTIBIOTICS; VETERINARY ANTIBIOTICS; ADSORPTION; WATER; SOIL; REMOVAL; MANURE; SULFAMETHOXAZOLE; TEMPERATURE;

D O I：

10.1016/j.biortech.2014.05.029

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Sulfamethazine (SMT) as a veterinary drug has been detected frequently in the environment. In this study, six biochars produced from tea waste (TW) at 300 and 700 degrees C with or without N-2 and steam activation were characterized and evaluated for SMT sorption in water. The sorption of SMT was interpreted as a function of biochar production condition, SMT concentration, pH and physicochemical characteristics of biochar. Distribution coefficient data showed high sorption of SMT at low pH (similar to 3) and the highest sorption density of 33.81 mg g(-1) was achieved by the steam activated biochar produced at 700 degrees C. The steam activation process increased the adsorption capacity by increasing the surface area of the biochar. The pi-pi electron donor-acceptor interaction, cation-pi interaction and cation exchange at low pH were the primary mechanisms governing SMT retention by biochars. Overall, steam activated tea waste biochar could be a promising remedy of SMT removal from water. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：303 / 308

页数：6

共 34 条

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