TY - JOUR
T1 - Pyrolysis condition affected sulfamethazine sorption by tea waste biochars
AU - Rajapaksha, Anushka Upamali
AU - Vithanage, Meththika
AU - Zhang, Ming
AU - Ahmad, Mahtab
AU - Mohan, Dinesh
AU - Chang, Scott X.
AU - Ok, Yong Sik
N1 - Funding Information:
This work is supported by the Korea Ministry of Environment , as a Geo-Advanced Innovative Action Project (G112-00056-0004-0). Instrumental analyses were partly supported by the Korea Basic Science Institute , the Environmental Research Institute , and the Central Laboratory of Kangwon National University , Korea. This study was also supported by 2013 Research Grant from Kangwon National University (project title: Development of designer biochar technology).
PY - 2014/8
Y1 - 2014/8
N2 - 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°C with or without N2 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 (~3) and the highest sorption density of 33.81mgg-1 was achieved by the steam activated biochar produced at 700°C. The steam activation process increased the adsorption capacity by increasing the surface area of the biochar. The π-π electron donor-acceptor interaction, cation-π 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.
AB - 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°C with or without N2 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 (~3) and the highest sorption density of 33.81mgg-1 was achieved by the steam activated biochar produced at 700°C. The steam activation process increased the adsorption capacity by increasing the surface area of the biochar. The π-π electron donor-acceptor interaction, cation-π 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.
KW - Black carbon
KW - Charcoal
KW - Emerging contaminant
KW - Low cost adsorbent
KW - Veterinary antibiotics
UR - http://www.scopus.com/inward/record.url?scp=84902211992&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.05.029
DO - 10.1016/j.biortech.2014.05.029
M3 - Article
C2 - 24926603
AN - SCOPUS:84902211992
SN - 0960-8524
VL - 166
SP - 303
EP - 308
JO - Bioresource technology
JF - Bioresource technology
ER -
