Garlic root biomass as novel biosorbents for malachite green removal: Parameter optimization, process kinetics and toxicity test
Garlic root biomass as novel biosorbents for malachite green removal: Parameter optimization, process kinetics and toxicity test
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大蒜根生物质作为新型生物吸附剂去除孔雀石绿：参数优化、过程动力学和毒性测试
DOI：
10.1007/s40242-016-6095-5
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发表时间：
2016-06
影响因子：
3.1
通讯作者：
Wang Yan
中科院分区：
文献类型：
--
作者：
Ren Hejun;Zhang Ruonan;Wang Qiaochu;Pan Hongyu;Wang Yan
研究了农业废弃物大蒜根对水溶液中孔雀石绿色（MG）的去除效果。通过傅立叶变换红外光谱（FTIR）和扫描电镜（SEM）研究了大蒜根对染料的吸附。吸附平衡数据符合Langmuir模型（R2>0.99），吸附动力学符合准二级动力学方程（R2>0.99）。添加1和2 g/L大蒜根时，吸附剂对MG的最大吸附量分别为172.41和232.56 mg/g。通过正交试验（OA 16基质）确定了去除MG的最佳条件。MG和大蒜根的浓度均显著影响去除效果。急性毒性试验表明，处理后的MG溶液的毒性低于母体溶液。结果表明，大蒜根是一种潜在的低成本吸附剂，用于去除工业废水中的染料。
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 adsorption 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(OA16matrix). 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.
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