Garlic Root Biomass as Novel Biosorbents for Malachite Green Removal： Parameter Optimization, Process Kinetics and Toxicity Test

作     者：REN Hejun ZHANG Ruonan WANG Qiaochu PAN Hongyu WANG Yan 

作者机构：Key Laboratory of Groundwater Resources and Environment Ministry of Education College of Environment and Resources Jilin University Changchun 130021 P. R. China College of Plant Sciences Jilin University Changchun 130062 P. R. China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2016年第32卷第4期

页      面：647-654页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 0906[农学-兽医学] 09[农学] 0703[理学-化学] 

基　　金：Supported by the 12th Five-year Plan Project of the Science and Technology Support  China(No.2014BADI4B02) and the National Natural Science Foundation of China(Nos.31500432  41471252) 

主　　题：Garlic root Malachite green Adsorption Toxicity test Wastewater 

摘      要：The potential of the agricultural waste garlic root to remove malachite green（MG） from aqueous solutions was evaluated. The adsorption of this dye onto garlic root was confirmed by means of Fourier transform infrared analysis（FTIR） and scanning electron microscopy（SEM）. The equilibrium data fitted well into the Langmuir model（R2〉0.99）, and the adsorption kinetics followed the pseudo-second-order equation（R2〉0.99）. The maximum ad- sorption capacities of MG onto the adsorbent were 172.41 and 232.56 mg/g with the addition of 1 and 2 g/L garlic root, respectively. The optimal conditions for MG removal were established on the basis of orthogonal experiments（OAl6 matrix）. The concentrations of both MG and garlic root significantly affected the removal efficiency. The acute toxicity test indicated that the treated MG solutions were less toxic than the parent solutions. These results suggest that garlic root is a potential low-cost adsorbent for removing dye from industrial wastewater.