Dobaradaran Sina, Nabipour Iraj, Keshtkar Mozhgan, Ghasemi Fatemeh Faraji, Nazarialamdarloo Tayebeh, Khalifeh Farzaneh, Poorhosein Marjan, Abtahi Mehrnoosh, Saeedi Reza
The Persian Gulf Marine Biotechnology Research Center, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran; Systems Environmental Health, Oil, Gas and Energy Research Center, Bushehr University of Medical Sciences, Bushehr, Iran.
The Persian Gulf Tropical Medicine Research Center, Bushehr University of Medical Sciences, Bushehr, Iran.
Water Sci Technol. 2017 Jan;75(2):474-481. doi: 10.2166/wst.2016.533.
The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0-7.0) were investigated in a single component batch system at room temperature (25 ± 1 °C). The heavy metal adsorption by cuttlebone was relatively rapid and reached equilibrium in 120 min in all the cases. The pseudo-second order rate equation described the adsorption kinetic of both the ions. The adsorption capacities of Pb and Cu were constantly increased by pH and the optimum condition of pH was determined to be 7.0. The Freundlich model was better fitted than other models with the isotherm data, indicating sorption of the metal ions in a heterogeneous surface. According to the Langmuir model, the maximum adsorption capacities of cuttlebone for Pb and Cu were determined to be 45.9 and 39.9 mg/g, respectively. The results indicated cuttlebone as a promising adsorbent for Pb and Cu, which presents a high capacity of self-purification in marine environments and also can be used for removal of the metal ions from water and wastewater.
本研究旨在确定作为死亡生物量的乌贼骨对水溶液中铅（II）和铜（II）的吸附特性。在室温（25±1°C）下，于单一组分间歇系统中研究了吸附动力学、等温线以及pH值（2.0 - 7.0范围内）的影响。在所有情况下，乌贼骨对重金属的吸附相对较快，120分钟内达到平衡。准二级速率方程描述了两种离子的吸附动力学。铅和铜的吸附容量随pH值不断增加，确定最佳pH条件为7.0。Freundlich模型比其他模型更能拟合等温线数据，表明金属离子在非均相表面的吸附。根据Langmuir模型，乌贼骨对铅和铜的最大吸附容量分别确定为45.9和39.9 mg/g。结果表明乌贼骨是一种有前景的铅和铜吸附剂，其在海洋环境中具有高自净能力，也可用于从水和废水中去除金属离子。
