不同修饰剂对从过剩的污泥中提取的凝固剂的制剂和性能的影响
Xueying Li1, Sujie Shan1,2, Hui Liang1
1School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, China.
Environmental science and pollution research international
|August 24, 2023
概括
使用酸优化基于污泥的酸 (SBC) 增强了阴离子凝固剂的特性. 由此产生的SBC-CA-g-DMC在处理水的度去除方面表现优异.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 聚合物化学 聚合物化学
背景情况:
- 含有氧的功能组对于通过移植共聚合制备阴离子化合物凝固剂至关重要.
- 基于泥的碳水化合物 (SBC) 是开发有效凝固剂的潜在前体.
- SBC前体的表面修饰会影响最终的阴离子凝固剂的特性.
研究的目的:
- 为了优化水热条件,以生产基于污泥的碳水化合物 (SBC) 前体.
- 研究不同修饰剂 (HCOOH,酸 (CA),H2SO4,H2O2) 对SBC表面特性的影响.
- 为了评估衍生阴离子凝固剂 (SBC-g-DMC) 的花表现.
主要方法:
- 用各种修饰剂对污泥进行水热处理,以产生SBC前体.
- 将DMC单体的移植共聚化到SBC前体上,以形成阴离子凝固剂.
- 表面特性 (酸性群,性基群) 和泽塔潜力的表征.
- 评估花的性能,包括去除度的效率.
主要成果:
- 这四种修饰剂都增加了SBC表面的酸性群;酸 (CA) 显著增强了基基.
- 衍生出的阴离子凝固剂在广泛的pH范围 (3.011.0) 中表现出正泽塔潜力.
- SBCCA-g-DMC表现出最高的接种比率,效率和阴离度,导致卓越的花性能.
- 在4毫克/升的剂量下,SBCCA-g-DMC可以达到94.44%的度去除.
- 发现过氧化 (H2O2) 是SBC制剂中效率较低的修饰剂.
结论:
- 酸是一种有效的修饰剂,用于生产高性能基于污泥的碳化合物化凝固剂.
- 优化的SBCCA-g-DMC凝固剂在水处理中显示出有机物回收和污染物去除的绝佳潜力.
- 这项研究为合成有效的基于SBC的凝固剂提供了宝贵的参考.
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