Environmental Engineering Department, Atatürk University, 25240 Erzurum, Turkey E-mail:
Water Sci Technol. 2020 Dec;82(12):3032-3046. doi: 10.2166/wst.2020.547.
Abies bornmulleriana cone was used to investigate its biosorption efficiency and capacity of Pb, Cu, Cd, Co, and Ni heavy metal ions in a quinary system. The mechanism of multi-metal removal was illustrated in terms of FTIR results. Electrophoretic mobilities of the biosorbents were determined to access the information about the competitive biosorption. BET surface area and pore volume of the biosorbents before and after the biosorption were defined to be (5.05 m g and 0.0018 cm g) and (0.97 m g and 0.00032 cm g), respectively. The average pore width of the biosorbent before and after the biosorption was calculated as 9.34 and 13.04 Å, respectively. The pseudo-first-order model and the pseudo-second-order model were applied to analyze the experimental data. Experimental data have been evaluated according to the Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms. The maximum biosorption efficiency and capacity for Pb, Cu, Cd, Ni, and Co ions were defined as (85.4, 56.4, 35.4, 21.7 and 18.9%) and (8.5, 5.6, 3.5, 2.2 and 1.9 mg g), respectively. The selectivity of heavy metal ions resulted in the magnitude order of Pb > Cu > Cd > Ni > Co.
使用冷杉球果研究了五重体系中 Pb、Cu、Cd、Co 和 Ni 重金属离子的生物吸附效率和容量。根据 FTIR 结果说明了多金属去除的机制。通过测定生物吸附剂的电泳迁移率，获得了有关竞争生物吸附的信息。生物吸附前后，生物吸附剂的 BET 表面积和孔体积分别定义为（5.05 m g 和 0.0018 cm g）和（0.97 m g 和 0.00032 cm g）。生物吸附前后，生物吸附剂的平均孔径分别计算为 9.34 和 13.04 Å。分别应用了伪一级和伪二级模型来分析实验数据。根据 Langmuir、Freundlich、Temkin 和 Dubinin-Radushkevich 等温线对实验数据进行了评估。Pb、Cu、Cd、Ni 和 Co 离子的最大生物吸附效率和容量分别定义为（85.4、56.4、35.4、21.7 和 18.9%）和（8.5、5.6、3.5、2.2 和 1.9 mg g）。重金属离子的选择性导致其大小顺序为 Pb > Cu > Cd > Ni > Co。
