Ajmal Mohammad, Rao R A K, Ahmad Jameel, Ahmad Rais
Environmental Research Laboratory, Department of Applied Chemistry, Faculty of Engg. & Tech., AMU, Aligarh 202 002 (UP), India.
J Environ Sci Eng. 2006 Jul;48(3):221-4.
This paper presents the use of testa of groundnut shell for the removal of nickel from dilute aqueous solutions at laboratory scale. The adsorption isotherm of Ni(II) on the testa of groundnut shell was carried out by the batch adsorption process. Various parameters such as initial concentration, pH and amount of the adsorbent doses were studied. The experimental adsorption data obtained followed both Langmuir as well as Freundlich isotherms. Maximum adsorption (85%) was observed at pH 6. The monolayer adsorption capacity was found to be 18.79 mg/g, which is greater than most of the low-cost adsorbents reported.
本文介绍了在实验室规模下，利用花生壳种皮从稀水溶液中去除镍的方法。通过分批吸附过程研究了Ni(II)在花生壳种皮上的吸附等温线。研究了初始浓度、pH值和吸附剂剂量等各种参数。所获得的实验吸附数据符合Langmuir等温线和Freundlich等温线。在pH值为6时观察到最大吸附量（85%）。发现单层吸附容量为18.79 mg/g，这比大多数报道的低成本吸附剂都要高。
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