农业废弃物对雷马唑亮紫5R (RBV-5R)和雷马唑亮蓝R (RBBR)的吸附研究

Honglin Lai
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引用次数: 22

摘要

研究了农业废弃物对合成染料雷马佐亮紫5R (RBV-5R)和雷马佐亮蓝R (RBBR)的去除率。染料是水污染的主要来源,不仅对水体造成严重损害,而且由于其高毒性和致癌性对人体健康产生负面影响。农业废弃物是可再生吸附剂,因为它们容易获得且价格低廉,而且它们也可以用来代替传统的活性炭。因此,本文研究了染料溶液中RBV-5R和RBBR在处理后的吸附剂上的吸附去除。以RBBR为试验染料,从10种吸附剂中筛选出两种最佳吸附剂。本分析的关键吸附剂是椰子壳和芒果种子,与其他吸附剂相比,它们的去除率最高。用所选的吸附剂继续实验,观察不同的初始染料浓度、吸附剂用量、接触时间、pH值和粒径对染料吸附的影响。结果表明,不同的参数对吸附剂的去除率和吸附电位有不同的影响。利用傅里叶变换红外光谱(FTIR)研究了吸附剂在吸附前后的官能团对水溶液中染料的吸附作用,发现官能团影响吸附剂的吸附效果或去除率以及吸附能力。结果表明,5 g芒果籽对RBV-5R的提取率为85.54%,吸附力为1.26 mg/g。在21小时内,椰壳去除了74.39%的RBBR,吸附量为8.01 mg/g。研究结果表明,这些农业废弃物可以作为一种替代吸附剂,用于去除水溶液中的染料。
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Adsorption of Remazol Brilliant Violet 5R (RBV-5R) and Remazol Brilliant Blue R (RBBR) from Aqueous Solution by Using Agriculture Waste
The ability of agricultural waste materials to remove synthetic dyes such as Remazol Brilliant Violet 5R (RBV-5R) and Remazol Brilliant Blue R (RBBR) from aqueous solutions was investigated. Dyes are a major source of water contamination that not only cause significant damage to water bodies but also have a negative effect on human health due to their high toxicity and carcinogenic nature. Agricultural wastes are renewable adsorbents because they are readily available and inexpensive, and they can also be used instead of conventional activated carbon. As a result, the removal of RBV-5R and RBBR from dye solutions by adsorption onto treated adsorbent was investigated in this review. The two best adsorbents out of ten were selected via a screening process with RBBR as the test dye. The key adsorbents in this analysis were coconut shells and mango seeds, which had the highest removal rate as compared to others. The experiment was continued with the chosen adsorbent to see how different initial dye concentrations, adsorbent dosage, contact time, pH, and particle size affected dye adsorption. The results show that different parameters have different effects on the removal rate and adsorption potential of the adsorbent. The adsorption of dye from aqueous solution onto adsorbent was investigated using Fourier transform infrared spectroscopy (FTIR) to investigate the functional groups of the adsorbent before and after the adsorption operation, and it was discovered that the functional group affected the effectiveness or removal rate as well as the adsorption capability of adsorbents. According to the findings, 5 gram mango seeds can extract 85.54 percent of RBV-5R with adsorption power of 1.26 mg/g. For 21 hours, coconut shells removed 74.39 percent of RBBR with an adsorption capacity of 8.01 mg/g. The findings indicated that these agricultural wastes could be useful as an alternative adsorbent for removing dye from aqueous solutions.
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