Pandey Piyush Kant, Choubey Shweta, Verma Yashu, Pandey Madhurima, Kamal S S Kalyan, Chandrashekhar K
Centre for Environmental Science & Engineering, Department of Engineering Chemistry, Bhilai Institute of Technology, Durg, 491002 (C.G.), India.
Int J Environ Res Public Health. 2007 Dec;4(4):332-9. doi: 10.3390/ijerph200704040009.
The objective of the present work was to investigate the removal of Ni(II) by the fresh biomass (FBM) and chemically treated leached biomass (LBM) of Calotropis procera. The scope of the work included screening of the biosorbents for their metal uptake potential, batch equilibrium, column mode removal studies and kinetic studies at varying pH (2-6), contact time, biosorbent dosages (1-25 g/L) and initial metal ion concentration (5-500 mg/L). The development of batch kinetic model and determination of order, desorption studies, column studies were investigated. It was observed that pH had marked effect on the Ni(II) uptake. Langmuir and Freundlich models were used to correlate equilibrium data on sorption of Ni(II) metallic ion by using both FBM and LBM at 28 degrees C and pH 3 and different coefficients were calculated. It was found that both biomasses were statistically significant fit for Freundlich model. The biomass was successfully used for removal nickel from synthetic and industrial effluents and the technique appears industrially applicable and viable.
本研究的目的是研究牛角瓜的新鲜生物质（FBM）和化学处理的浸出生物质（LBM）对镍（II）的去除效果。研究范围包括筛选生物吸附剂的金属吸收潜力、批次平衡、柱模式去除研究以及在不同pH值（2 - 6）、接触时间、生物吸附剂剂量（1 - 25 g/L）和初始金属离子浓度（5 - 500 mg/L）下的动力学研究。研究了批次动力学模型的建立、反应级数的确定、解吸研究和柱研究。结果表明，pH值对镍（II）的吸收有显著影响。在28℃和pH值为3的条件下，使用Langmuir和Freundlich模型来关联FBM和LBM对镍（II）金属离子吸附的平衡数据，并计算了不同的系数。结果发现，两种生物质对Freundlich模型的拟合在统计学上均具有显著性。该生物质已成功用于从合成废水和工业废水中去除镍，该技术在工业上似乎具有适用性和可行性。
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