Kinetics of decolourization of malachite green from aqueous medium by maize cob (Zea maize): An agricultural solid waste
Kinetics of decolourization of malachite green from aqueous medium by maize cob (Zea maize): An agricultural solid waste
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DOI：
10.1016/j.desal.2009.01.006
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发表时间：
2009-10
期刊：
影响因子：
9.9
通讯作者：
G. Sonawane;V. Shrivastava
中科院分区：
文献类型：
--
作者：
G. Sonawane;V. Shrivastava
以农业废弃物玉米芯粉（MCP）为原料制备吸附剂，成功地去除了水中的孔雀石绿。在27℃恒温条件下，通过改变搅拌时间、染料浓度、吸附剂剂量和pH等参数进行吸附。确定了Lagergren伪一阶、伪二阶、Elovich模型和颗粒内扩散模型等吸附动力学参数。平衡吸附数据符合Langmuir和Freundlich等温线。吸附量为80.64 mg染料/g吸附剂。这些研究表明，MCP可以作为一种低成本的染料去除废水处理替代方案。并用FTIR、XRD和SEM对吸附剂进行了表征。
Adsorbent prepared from maize cob powder (MCP), an agricultural waste, was successfully used to remove the malachite green from an aqueous solution. The adsorption was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose and pH at constant temperature of 27 °C. Kinetic parameters of adsorption such as Lagergren pseudo first-order, pseudo second-order, Elovich and intraparticle diffusion models were determined. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms. The adsorption capacity was found to be 80.64 mg dye/g of adsorbent. These studies suggested that MCP could be used as a lowcost alternative in wastewater treatment for dye removal. The adsorbent was also characterized by FTIR, XRD and SEM analyses.