Department of Chemical Engineering, Islamic Azad University, North Tehran Branch, Tehran, Iran.
Nat Prod Res. 2010 Mar;24(4):341-8. doi: 10.1080/14786410903064915.
In this study, the batch removal of copper(II) ions from an aqueous solution and wastewater using marine brown alga Sargassum sp. was investigated. Activated carbon prepared from Sargassum sp. by acid decomposition was also used for the removal of copper from the aqueous solution and wastewater. Activated carbon-prepared marine algae were used as a low-cost sorbent. The effect of pH, biosorption time, adsorbent dose and metal ion concentration were considered. The most effective pH was found to be 4.0. The biosorption capacities were pH dependent on the solution and the maximum uptake for copper with initial concentrations of 70, 100 and 150 mg L(-1) at pH 4.0 were obtained as 95.68, 95.09 and 94.83%, respectively. Total metal ion biosorption occurs within 2 h. The equilibrium adsorption data are fitted to Lomgmuir and Frendlich isotherm models. Both models represent the experimental data satisfactorily. The adsorption follows second-order kinetics. This study shows that the use of activated carbon is a valuable material for the removal of copper from aqueous solutions and wastewater, and a better substitute for use in activated marine brown algae.
在这项研究中，研究了从水溶液和废水中批量去除铜（II）离子的方法，使用的是海洋褐藻马尾藻。还使用通过酸分解制备的马尾藻活性炭来从水溶液和废水中去除铜。经过活化的海藻被用作一种低成本的吸附剂。考察了 pH 值、生物吸附时间、吸附剂用量和金属离子浓度的影响。最有效的 pH 值被发现为 4.0。在 pH 值为 4.0 时，对于初始浓度为 70、100 和 150mg/L 的铜，吸附容量随溶液的 pH 值而变化，最大吸附量分别为 95.68%、95.09%和 94.83%。总金属离子的生物吸附在 2 小时内完成。平衡吸附数据拟合朗缪尔和弗雷德里希等温线模型。这两个模型都能很好地代表实验数据。吸附遵循二级动力学。这项研究表明，使用活性炭是从水溶液和废水中去除铜的一种有价值的材料，是活性海洋褐藻的更好替代品。
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