浸渍SDS阴离子表面活性剂颗粒活性炭对氰化物的吸附

IF 2.2 4区工程技术 Q2 Chemistry

Gold Bulletin Pub Date : 2022-06-25 DOI:10.1007/s13404-022-00314-y

C. Vargas, P. Navarro, E. Mejía, P. Hernández

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引用次数: 2

摘要

研究了负离子表面活性剂十二烷基硫酸钠(SDS)对颗粒活性炭的浸渍，并对其吸附氰化物的影响进行了评价。测定了热力学和动力学参数。SDS浸渍活性炭后，活性炭对金的吸附能力提高了10%，对活性炭表面有清洁作用，比表面积增大。比孔容和平均孔径变化不大。温度升高会降低金在改性碳上的吸附。计算了标准吸附焓和活化能，分别为- 41.3 kJ/mol和15.0 kJ/mol。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Aurocyanide adsorption onto granular activated carbon impregnated with SDS anionic surfactant

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Aurocyanide adsorption onto granular activated carbon impregnated with SDS anionic surfactant

The impregnation of granular activated carbon with the anionic surfactant sodium dodecylsulfate (SDS) was studied and the influence on aurocyanide adsorption was evaluated. Thermodynamic and kinetic parameters were also determined. The impregnation of activated carbon with SDS improves gold adsorption by 10%, showing a cleansing effect on the carbon surface which was displayed in a higher specific surface area. Specific pore volume and average pore diameter did not undergo important changes. Increasing the temperature decreases gold adsorption on modified carbon. The standard enthalpy of adsorption and the activation energy were calculated, getting values of − 41.3 kJ/mol and 15.0 kJ/mol, respectively.

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来源期刊

Gold Bulletin 工程技术-材料科学：综合

CiteScore

3.30

自引率

4.50%

发文量

审稿时长

3 months

期刊介绍： Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.