Co-polymerization of polysilicic-zirconium with enhanced coagulation properties for water purification
Co-polymerization of polysilicic-zirconium with enhanced coagulation properties for water purification
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具有增强混凝性能的聚硅锆共聚用于水净化
DOI：
10.1016/j.seppur.2018.01.070
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发表时间：
2018
影响因子：
8.6
通讯作者：
Meilin Liu
中科院分区：
文献类型：
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作者：
Binglu Deng;Hanjin Luo;Zhongqing Jiang;Zhong-Jie Jiang;Meilin Liu
采用一种简单的共聚方法制备了由化学物种ZrSi24O50、ZrSiO4和Zr5Si3组成的聚硅酸锆(PSZr)。结果表明，所制得的PSZr具有较高的净化原水和腐植酸废水的混凝剂活性。PSZr的合成温度、硅锆摩尔比和碱度对PSZr的净化效果有很大影响。结果表明，在聚硅酸质量分数为1.5%、硅锆摩尔比为1：1、碱度为0.25、温度为20~25 °C的条件下合成的聚硅酸锆对水的净化效果较好，对水中的UV254(紫外光波长小于254 nm)和总有机碳的去除效果分别为81.23%和66.85%，残余浊度为0.86NUT，对模拟腐植酸废水中UV254和TOC的去除效果分别为99.20%和74.21%。结果表明，PSZr可以作为废水处理的混凝剂。
A simple co-polymerization method has been employed to prepare polysilicic-zirconium (PSZr), consisting of chemical species of ZrSi24O50, ZrSiO4, and Zr5Si3. The obtained PSZr is found to be highly active as the coagulant for the purification of the raw water and humic acid wastewater. The performance of PSZr on the wastewater purification is greatly dependent upon the synthetic temperature of PSZr, and the mole ratio of Si:Zr, and the basicity of the PSZr. It shows that PSZr synthesized at the temperature of 20–25 °C with the mass fraction of polysilicic acid of 1.5%, the mole ratio of Si:Zr of 1:1, and a basicity of 0.25, is relatively more efficient for water purification and could achieve the UV254(Ultraviolet wavelength less than 254 nm) and total organic carbon removals of 81.23% and 66.85% and residual turbidity of 0.86 NUT in the raw water, and the UV254and TOC removals of 99.20% and 74.21% in simulated humic acid wastewater, respectively. These results clearly demonstrate that PSZr could be used as the coagulant for the wastewater treatments.