High performance removal of sulfamethoxazole using large specific area of biochar derived from corncob xylose residue  

作　　者：Yinxue Li Hongru Shang Yongna Cao Chunhui Yang Yujie Feng Yanling Yu 

机构地区：[1]School of Chemistry and Chemical Engineering,The 1st campus,Harbin Institute of Technology,No 92 Xidazhi Street,Nangang District,Harbin 150001,People’s Republic of China [2]State Key Laboratory of Urban Water Resource and Environment,Harbin 150090,People’s Republic of China

出　　处：《Biochar》2022年第1期1013-1023,共11页生物炭（英文）

基　　金：the National Key Research and Development Program of China[2017YFA0207201];the National Natural Science Foundation of China(Grant No.2197020577).

摘　　要：To remove antibiotics from waste water,an alkali active porous biochar,850BC,was prepared from corncob xylose residue.In preparation,NaOH dipping was used for silicon removal and KOH activation was operated at 850℃.Further characterization containing BET,SEM,and FTIR were confirmed.850BC possessed a huge specific surface area of 3043 m^(2)·g^(−1),developed pore structure and abundant oxygen functional groups.The adsorption performance of sulfamethoxazole on 850BC was quick and efficient,and the adsorption capacity reached 1429 mg·g^(−1),which was significantly higher than other adsorbents reported previously.While pseudo-second-order kinetic model and Langmuir model could better describe the adsorption,chemisorp-tion dominated the SMX adsorption onto 850BC.In virtue of pore-filling andπ-πinteraction as major mechanism,a large surface area and rich oxygen-containing functional groups led to an excellent adsorption performance.Thus,this preparation method provided a biochar-based adsorbent with enhanced specific surface for efficient removal of antibiotic pollutants.

关 键 词：Corncob xylose residue BIOCHAR SULFAMETHOXAZOLE Adsorption behavior Adsorption mechanism 

分 类 号：O64[理学—物理化学]