Serencam H, Gundogdu A, Uygur Y, Kemer B, Bulut V N, Duran C, Soylak M, Tufekci M
Department of Chemistry, Faculty of Arts and Sciences, Karadeniz Technical University, 61080, Trabzon, Turkey.
Bioresour Technol. 2008 Apr;99(6):1992-2000. doi: 10.1016/j.biortech.2007.03.021. Epub 2007 May 1.
The utility of Nordmann fir (Abies nordmanniana (Stev.) Spach. Subsp. nordmanniana) leaves from Eastern Black Sea region for the removal (sorption) of metal ions from aqueous solutions was investigated. For this, the optimum values of pH, time, metal concentration, leaf concentration, leaf particle size and adsorption capacity were determined. Also the recovery conditions of the metals from leaves were studied. Cd metal was selected because of its toxic properties. Freundlich isotherm model was used to describe the adsorption behaviour and the experimental results obtained for Cd(2+) adsorption, followed this model well. The utility of Nordmann fir leaves to remove toxic metals from aqueous solutions was proved. Hence, this study showed that the leaves of Nordmann fir can provide cheap source as biosorbents for toxic metal removal from natural or wastewaters.
研究了黑海东部地区高加索冷杉（Abies nordmanniana (Stev.) Spach. Subsp. nordmanniana）叶片对水溶液中金属离子的去除（吸附）效用。为此，确定了pH值、时间、金属浓度、叶片浓度、叶片粒径和吸附容量的最佳值。还研究了从叶片中回收金属的条件。由于镉金属具有毒性，故选择镉金属进行研究。采用弗罗因德利希等温线模型描述吸附行为，镉(2+)吸附的实验结果与该模型拟合良好。证明了高加索冷杉叶片可用于去除水溶液中的有毒金属。因此，本研究表明，高加索冷杉叶片可为从天然或废水中去除有毒金属提供廉价的生物吸附剂来源。
