Preparation and characterization of renewable biopolymer based alginate adsorbent for removing of crystal violet dye from water

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2025-05-09 DOI:10.1016/j.jics.2025.101766

Kadriye Oktor , Guler Hasirci , Nilufer Hilmioglu

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Abstract

Purifying water resources with sustainable technologies is essential for the future of humanity. Crystal violet is one of the most polluting dyes and is harmful to aquatic ecosystems. Therefore, its removal from water is very important for environmental health. In this study, the removal of crystal violet dye from water was investigated using a carbon nanotube-loaded alginate adsorbent, which is environmentally friendly and does not generate unwanted byproducts. Modified alginate attracts attention as a biocompatible, sustainable, environmentally friendly and renewable adsorbent. Functionalized multi-walled carbon nanotube-loaded alginate adsorbent beads were developed for the removal of crystal violet from water. Adsorbents were characterized by FTIR, TGA, and SEM analyses. The Design Expert 12 student version was used for the statistical analysis. Three variables adsorbent dosage, solution concentration, and time, were investigated using the Response Surface Method (Box-Behnken design model) to determine the response (crystal violet removal %). The experimental data were found to be compatible with the quadratic model. According to the ANOVA, the most effective variable was the removal timeby adsorption. An adsorption capacity of 32.05 mg/g was obtained from the adsorbents for the adsorption of crystal violet from water. It was observed that the experimental data were compatible with the Langmuir isotherm and the pseudo-second-order kinetic model. It was concluded that the prepared composite adsorbents are suitable for the removal of crystal violet from water.

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海藻酸盐基可再生生物高分子吸附剂的制备及表征

用可持续技术净化水资源对人类的未来至关重要。结晶紫是污染最严重的染料之一，对水生生态系统有害。因此，将其从水中去除对环境健康非常重要。在本研究中，研究了碳纳米管负载藻酸盐吸附剂从水中去除结晶紫染料，该吸附剂是环保的，不会产生有害的副产物。改性海藻酸盐作为一种具有生物相容性、可持续性、环保性和可再生的吸附剂受到了广泛的关注。研制了功能化多壁碳纳米管负载海藻酸盐吸附珠，用于去除水中的结晶紫。通过红外光谱（FTIR）、热重分析（TGA）和扫描电镜（SEM）对吸附剂进行了表征。采用Design Expert 12学生版进行统计分析。采用响应面法（Box-Behnken设计模型）考察了吸附剂用量、溶液浓度和时间三个变量，以确定响应（结晶紫去除率%）。实验数据与二次模型基本一致。方差分析表明，最有效的变量是吸附去除时间。吸附剂对结晶紫的吸附量为32.05 mg/g。实验数据与Langmuir等温线和拟二级动力学模型相符。结果表明，所制备的复合吸附剂适用于水中结晶紫的去除。

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来源期刊

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.