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使用生物聚合物壳聚糖珠通过吸附去除水中磷酸盐的优化

Optimization of Removal of Phosphate from Water by Adsorption Using Biopolymer Chitosan Beads.

作者信息

Oktor Kadriye, Yuzer Nazlı Yenihan, Hasirci Guler, Hilmioglu Nilufer

机构信息

Department of Environmental Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey.

Department of Chemical Engineering, Kocaeli University, 41001 İzmit, Kocaeli Turkey.

出版信息

Water Air Soil Pollut. 2023;234(4):271. doi: 10.1007/s11270-023-06230-x. Epub 2023 Apr 11.

DOI:10.1007/s11270-023-06230-x
PMID:37064075
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10088684/
Abstract

The need for clean water is the most basic human right. Water scarcity will be one important environmental problem of all countries in the future. Phosphate is a harmful matter for public health and the environment. In this study, the removal of phosphate from water by chitosan, which is an environmentally friendly material, was investigated. Chitosan adsorbent spheres were prepared for phosphate separation from water by adsorption, which is a feasible method. The effects of phosphate concentration, adsorbent dosage, and operation time on the removal were investigated. The removal increased with acid concentration and adsorbent amount. The maximum adsorption capacity of chitosan beads is 87.26 mg/g. Adsorption behavior of the chitosan beads were examined by Langmuir and Freundlich isotherms and pseudo-first and second-order kinetic models. The adsorption process was optimized by the response surface method (RSM). Trial version of Design Expert® 12.0 was used in the study. It has been understood as a result of the RSM statistical analysis that higher phosphate removal values would be obtained by increasing the amount of adsorbent. ANOVA analysis showed that adsorbent dosage had the biggest effect on removal of phosphate using chitosan beads prepared for adsorption.

摘要

对清洁水的需求是最基本的人权。水资源短缺将是未来所有国家面临的一个重要环境问题。磷酸盐对公众健康和环境都是有害物质。在本研究中，对壳聚糖（一种环境友好型材料）去除水中磷酸盐的情况进行了研究。制备了壳聚糖吸附球，通过吸附从水中分离磷酸盐，这是一种可行的方法。研究了磷酸盐浓度、吸附剂用量和操作时间对去除效果的影响。去除率随酸浓度和吸附剂用量的增加而提高。壳聚糖珠的最大吸附容量为87.26 mg/g。用朗缪尔等温线、弗伦德里希等温线以及准一级和准二级动力学模型研究了壳聚糖珠的吸附行为。采用响应面法（RSM）对吸附过程进行了优化。研究中使用了Design Expert® 12.0试用版。通过RSM统计分析可知，增加吸附剂用量可获得更高的磷酸盐去除值。方差分析表明，对于为吸附制备的壳聚糖珠，吸附剂用量对磷酸盐去除的影响最大。

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