木麻黄球果粉作为低成本吸附剂对水溶液中罗丹明B染料的修复

M. K. Dahri, M. R. R. Kooh, L. Lim
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引用次数: 32

摘要

以木麻黄球果(CEC)为吸附剂,对水溶液中的有毒染料罗丹明B (RB)进行了脱除。采用间歇实验法考察了接触时间、pH、温度、离子强度、染料浓度等因素对吸附过程的影响。采用动力学和等温线理论模型对实验数据进行了分析,发现拟二阶动力学和Langmuir等温线模型最适合实验数据。测定了CEC的Langmuir最大吸附量为49.5 mg g−1。RB在CEC上的吸附在热力学上是有利的、可行的和吸热的。
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Remediation of Rhodamine B Dye from Aqueous Solution Using Casuarina equisetifolia Cone Powder as a Low-Cost Adsorbent
The removal of toxic dye rhodamine B (RB) from aqueous solution was achieved by using Casuarina equisetifolia cone (CEC) as an adsorbent. Batch experiment method was used in order to investigate the effects of contact time, pH, temperature, ionic strength, and dye concentration on the adsorption process. Kinetics and isotherm theoretical models were applied on the experimental data and it was found that the pseudo-2nd-order kinetics and the Langmuir isotherm model best fitted into the data. The Langmuir maximum adsorption capacity for CEC was determined as 49.5 mg g−1. The adsorption of RB onto CEC is thermodynamically favourable, feasible, and endothermic in nature.
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