壳聚糖/凹凸棒石复合絮凝剂的制备及应用

IF 0.6 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
Y. Zhong, Jie Wu, Su-Zhen Wang, S. Tang
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引用次数: 0

摘要

以壳聚糖(CS)和凹凸棒土(ATP)为原料,制备了一种吸附性能优良的壳聚糖/凹凸棒土(CS/ATP)复合絮凝剂。用扫描电镜和红外光谱对复合絮凝剂的微观形貌和结构进行了表征。研究了CS/ATP复合絮凝剂对某制药厂苯扎酸(BZ)废水中主要成分回收的影响。以回收粗产物BZ含量为评价指标,考察絮凝温度、搅拌时间、静置时间对絮凝效果的影响,得出最佳的回收工艺。实验结果表明,在废液中加入20 mg/mL的CS/ATP, 30℃搅拌10 min,静置30 min为最佳絮凝条件。与传统的回收工艺相比,CS/ATP复合絮凝剂可将回收粗产品的BZ含量从47%提高到74%。该絮凝剂能有效克服物质残留单一、分离困难的缺陷,有效加速废液中杂质的沉降,可用于溶液净化和废液分离领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
PREPARATION AND APPLICATION OF CHITOSAN/ATTAPULGITE COMPOSITE FLOCCULANT
A chitosan/attapulgite (CS/ATP) composite flocculant with excellent adsorption was prepared from chitosan (CS) and attapulgite clay (ATP). The micro morphology and structure of the composite flocculant were characterized with SEM and IR. The effect of the CS/ATP composite flocculant on the recovery of the main components from the bezafibrate (BZ) wastewater of a pharmaceutical plant was investigated. The influences of the flocculation temperature, mixing time and standing time on the flocculation effect were investigated by determining the BZ content of the recovered crude products as the evaluation index so as to obtain the best recovery process. The experimental results show that the best flocculation condition is created when we add 20 mg/mL of CS/ATP to the waste liquid, stir it at 30 °C for 10 min and allow it to stand for 30 min. Compared with the traditional recovery process, the BZ content of the recovered crude products can be increased from 47 % to 74 % when using the CS/ATP composite flocculant. This flocculant can effectively overcome the defects of single material residues and difficult separation, accelerate the settlement of impurities in a waste liquid effectively, and can be used in the field of solution clearing and waste liquid separation.
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来源期刊
Materiali in tehnologije
Materiali in tehnologije 工程技术-材料科学:综合
CiteScore
1.30
自引率
0.00%
发文量
73
审稿时长
4-8 weeks
期刊介绍: The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.
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