用醋酸纤维素-(3-氨基丙基)-三乙氧基硅烷吸附剂去除水样中的罗丹明6G和结晶紫染料

Andriana Joanes Leong, Ng Nyuk-Ting, Nurafifah Mohd Nor, U. Baig, W. Ibrahim, M. M. Sanagi, A. S. A. Keyon
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引用次数: 8

摘要

本文首次研究了纤维素乙酸-(3-氨基丙基)三乙氧基硅烷(CA-APTES)作为吸附剂对水中罗丹明6G (R6G)和结晶紫(CV)的去除效果。首先合成了吸附剂,并用衰减全反射-傅里叶变换红外光谱(ATR-FTIR)对其进行了表征。C=O酰胺在1740.17 cm−1和N-H酰胺在3451.98 cm−1附近的存在证实了吸附剂的成功合成。采用紫外-可见分光光度法测定其去除率,最佳条件为初始染料浓度为2 ppm,样品溶液pH为7,吸附剂用量为50 mg,振荡时间为2 h。采用伪一阶和伪二阶模型对吸附剂进行动力学研究,前者的去除率R6G和CV的R2分别为0.0064和0.0523,后者的R2分别为0.75和0.87。动力学研究最好用伪二阶模型来描述。将优化后的方法用于实际蜡染废水中染料的去除,对CV的去除率为61.81%,对R6G的去除率为48.62%。本文首次研究了纤维素乙酸-(3-氨基丙基)三乙氧基硅烷(CA-APTES)作为吸附剂对水中罗丹明6G (R6G)和结晶紫(CV)的去除效果。首先合成了吸附剂,并用衰减全反射-傅里叶变换红外光谱(ATR-FTIR)对其进行了表征。C=O酰胺在1740.17 cm−1和N-H酰胺在3451.98 cm−1附近的存在证实了吸附剂的成功合成。采用紫外-可见分光光度法测定其去除率,最佳条件为初始染料浓度为2 ppm,样品溶液pH为7,吸附剂用量为50 mg,振荡时间为2 h。采用伪一阶和伪二阶模型对吸附剂进行动力学研究,前者的去除率R6G和CV的R2分别为0.0064和0.0523,后者的R2分别为0.75和0.87。动力学研究最好用pseudo…
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of rhodamine 6G and crystal violet dyes from water sample using cellulose acetate-(3-aminopropyl)-triethoxysilane sorbent
In this work, cellulose acetate-(3-aminopropyl)triethoxysilane (CA-APTES) was evaluated for the first time as adsorbent for the removal of rhodamine 6G (R6G) and crystal violet (CV) in water. The sorbent was first synthesized then characterized using attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). The presence of C=O amide at 1740.17 cm−1 and N-H amide around 3451.98 cm−1 confirmed that the sorbent has been successfully synthesized. The removal efficiency was determined using ultraviolet-visible (UV-Vis) spectrophotometry, where the optimum conditions were found to be at 2 ppm initial dyes concentration, sample solution of pH 7, 50 mg of sorbent, and 2 hours of shaking time. Kinetic studies for the sorbents were carried out using both pseudo-first-order and pseudo-second-order models, where the R2 values for removal R6G and CV were 0.0064 and 0.0523 respectively for the former, and R2 0.75 and 0.87 respectively for the latter. The kinetic study was best described using pseudo-second-order model. The optimized method was adopted for the dyes removal in real batik textile wastewater, whereby removal efficiencies of 61.81 % for CV and 48.62 % for R6G were obtained.In this work, cellulose acetate-(3-aminopropyl)triethoxysilane (CA-APTES) was evaluated for the first time as adsorbent for the removal of rhodamine 6G (R6G) and crystal violet (CV) in water. The sorbent was first synthesized then characterized using attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR). The presence of C=O amide at 1740.17 cm−1 and N-H amide around 3451.98 cm−1 confirmed that the sorbent has been successfully synthesized. The removal efficiency was determined using ultraviolet-visible (UV-Vis) spectrophotometry, where the optimum conditions were found to be at 2 ppm initial dyes concentration, sample solution of pH 7, 50 mg of sorbent, and 2 hours of shaking time. Kinetic studies for the sorbents were carried out using both pseudo-first-order and pseudo-second-order models, where the R2 values for removal R6G and CV were 0.0064 and 0.0523 respectively for the former, and R2 0.75 and 0.87 respectively for the latter. The kinetic study was best described using pseu...
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