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首页> 外文期刊>RSC Advances >Fast, efficient and clean adsorption of bisphenol-A using renewable mesoporous silica nanoparticles from sugarcane waste ash
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Fast, efficient and clean adsorption of bisphenol-A using renewable mesoporous silica nanoparticles from sugarcane waste ash

机译：使用来自甘蔗废灰的可再生介孔二氧化硅纳米粒子快速，高效和清洁的双酚-A吸附

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Even with all the biological problems associated with bisphenol-A (BPA), this chemical is still being widely used, especially in thermal paper receipts. In this study, renewable mesoporous silica nanoparticles (MSN), obtained from sugarcane ash, functionalized with hexadecyltrimethylammonium (CTAB) were applied as an adsorbent in the removal of BPA from the aqueous solution. The versatility of this material and its BPA adsorption capacity were tested at different pH values, being practically constant at pH between 4 and 9, with a slight increase in pH 10 and a greater increase in pH 11. The removal time evaluation indicates a very fast adsorption process, removing almost 90% of BPA in the first 20 min of contact. The kinetic model indicates a monolayer formation of BPA molecules on the MSN-CTAB surface. The maximum adsorption capacity ( Q _(max) ) was 155.78 mg g ~(?1) , one of the highest found in literature, and the highest for material from a renewable source.
机译：即使与双酚-A（BPA）相关的所有生物问题，这种化学物质仍然被广泛使用，尤其是热纸张收据。在该研究中，从甘蔗灰获得的可再生介孔二氧化硅纳米粒子（MSN），用六烷基三甲基铵（CTAB）官能化以从水溶液中除去BPA的吸附剂。在不同的pH值下测试该材料的多功能性及其BPA吸附能力，实际上在4至9之间处于pH值，pH10略有增加，pH 11的增加。去除时间评估表明非常快吸附过程，在前20分钟内除去近90％的BPA。动力学模型表明MSN-CTAB表面上BPA分子的单层形成。最大吸附容量（q _（max））为155.78 mg g〜（？1），其中最高的文献中的最高之一，是来自可再生源的材料最高。

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