处理过的Peganum harmala-L种子去除水溶液中Ni (II)的吸附能力:动力学、平衡和热力学研究

M. Ghasemi, N. Ghasemi, Javad Azimi-Amin
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引用次数: 5

摘要

本研究的主要目的是评价新型吸附剂处理过的Peganum harmala-L种子(TPHS)去除水溶液中Ni (II)的性能。对不同的实验参数进行了批量实验。吸附研究包括平衡吸附等温线和动力学。平衡数据与Langmuir等温线模型拟合得很好。pH值为7时,吸附量为91.74 mg/g。动力学研究表明,伪二阶模型对两种吸附剂均具有较好的适用性。负值证实了TPHS吸附Ni (II)的可行性和自发性。
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Adsorbent Ability of Treated Peganum harmala-L Seeds for the Removal of Ni (II) from Aqueous Solutions: Kinetic, Equilibrium and Thermodynamic Studies
The main goal of this study was to evaluate the performance of new adsorbent, treated Peganum harmala-L seeds (TPHS), for the removal of Ni (II) from aqueous solution. Batch experiments were performed as a function of various experimental parameters. The adsorption studies included both equilibrium adsorption isotherms and kinetics. Equilibrium data fitted very well with the Langmuir isotherm model. Maximum adsorption capacity was determined 91.74 mg/g at pH 7. Kinetics studies showed better applicability for pseudo-second-order model for both adsorbents. The negative value of confirmed the feasibility and spontaneity of TPHS for Ni (II) adsorption.
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