Removal of Fe(III), Mn(II) and Zn(II) from palm oil mill effluent (POME) by natural zeolite
Removal of Fe(III), Mn(II) and Zn(II) from palm oil mill effluent (POME) by natural zeolite
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DOI：
10.1016/j.jtice.2012.02.014
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发表时间：
2012-09
影响因子：
5.7
通讯作者：
M. Shavandi;Zahra Haddadian;M. Ismail;N. Abdullah;Z. Abidin
中科院分区：
文献类型：
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作者：
M. Shavandi;Zahra Haddadian;M. Ismail;N. Abdullah;Z. Abidin
本研究研究了天然沸石去除棕榈油厂废水中重金属离子、锌 Zn(II)、锰 Mn(II) 和铁 Fe(III) 的吸附能力。评估了接触时间、搅拌速度、pH 值和吸附剂用量对重金属吸附的影响。还研究了沸石的解吸潜力。吸附速度快，180分钟内达到平衡。金属吸附随着pH值的增加而增加，吸附容量在0.015和1.157mg/g沸石之间。平衡数据遵循Langmuir等温线模型，而动力学数据则由伪二阶模型很好地描述。 HCl 实现最大解吸，Fe、Zn 和 Mn 分别为初始吸附量的 69.638、58.575 和 61.516%。实验中可以去除50%以上的Zn(II)和Mn(II)以及约60%的Fe(III)。
The adsorption capacity of natural zeolite for the removal of heavy metal ions, zinc Zn(II), manganese Mn(II) and iron Fe(III), found in palm oil mill effluent was investigated in this study. The effects of contact time, agitation speed, pH, and sorbent dosage on the sorption of heavy metals were evaluated. The desorption potential of zeolite was also investigated. The sorption was fast with equilibrium reached within 180min. The metal sorption increased with pH, and adsorption capacities ranged between 0.015 and 1.157mg/g of zeolite. Equilibrium data followed the Langmuir isotherm model while the kinetic data were well described by the pseudo-second-order model. Maximum desorption was attained by HCl with 69.638, 58.575 and 61.516% of the initial adsorbed amount for Fe, Zn and Mn, respectively. More than 50% of Zn(II) and Mn(II) and about 60% of Fe(III) could be removed in the experiments.