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首页> 外文期刊>Environmental Science and Pollution Research >Rarasaponin-bentonite-activated biochar from durian shells composite for removal of crystal violet and Cr(VI) from aqueous solution
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Rarasaponin-bentonite-activated biochar from durian shells composite for removal of crystal violet and Cr(VI) from aqueous solution

机译：Rarasaponin-Bentonite-活性生物炭来自榴莲壳复合材料，用于从水溶液中去除水晶紫和Cr（VI）

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摘要

This paper presents the preparation of composite material and its application for the adsorption of crystal violet and Cr(VI) from aqueous solution onto acid-activated bentonite (AAB) and rarasaponin–bentonite-activated biochar from durian shells composite (RBAB). The influence of initial pH of the solution and the temperature of adsorption on the adsorbents adsorption performance was also studied. Langmuir and Freundlich models could represent the adsorption equilibria equally well. Thermodynamic parameters such as ? G °, ? H °, and ? S ° were evaluated based on the adsorption isotherms. The values of ? G °, ? H °, and ? S ° for crystal violet adsorption system demonstrate behavior contrary to the Cr(VI) adsorption system. Where crystal violet adsorption is preferred at high temperatures with q ~(max), value is 518.64?mg/L; while adsorption Cr(VI) is better at low temperature with q ~(max), value is 106.30?mg/L. Pseudo-first-order and pseudo-second-order kinetic models could represent the kinetic data well.
机译：本文介绍了复合材料的制备及其在耐核壳复合物（RBAB）中从水溶液中吸附水溶液和Rarasaponin-膨润土 - 活化的生物炭的应用。还研究了初始pH的初始pH和吸附温度对吸附剂吸附性能的影响。 Langmuir和Freundlich模型可以同样代表吸附均衡。热力学参数如？ G°，？ H°，和？基于吸附等温线评估S°。值的值？ g°，？ H°，和？ S°用于晶体紫色吸附系统，展示与CR（VI）吸附系统相反的行为。在用q〜（max）的高温下优选晶体紫色吸附，值为518.64Ωmg/ l;当吸附Cr（vi）在低温下q〜（max）时，值为106.30？mg / l。伪一阶和伪二阶动力学模型可以很好地代表动力学数据。

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