洞察使用通过自由基中介结合制备的新型花剂CS-TA提高污泥脱水的性能
Yuejin Liu1, Xiaojun Niu1,2,3, Dongqing Zhang2
1School of Environment and Energy, South China University of Technology, Guangzhou, People's Republic of China.
Environmental technology
|July 16, 2024
概括
一种新的基托-酸 (CS-TA) 剂显著改善了污泥脱水. 这种环保方法提高了污泥蛋糕的脱水性能,并减少了与重金属相关的环境风险.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 污泥排水对于废物管理和资源回收至关重要.
- 传统的花剂在效率和环境影响方面存在局限性.
- 开发新型,环保的花剂对于可持续的污泥处理至关重要.
研究的目的:
- 从酸 (CS) 和酸 (TA) 合成和表征一种新型花剂CS-TA.
- 评估CS-TA在改善污泥脱水性能方面的效率.
- 调查CS-TA花的潜在机制和影响因素.
主要方法:
- 基和酸的自由基介导的结合,形成CS-TA.
- 福里埃变换红外光谱学和X射线衍射用于材料特征.
- 在不同的条件下 (剂量,pH值,温度) 进行泥脱水试验 (压力过,毛细血管吸收时间).
- 对粒子大小,泽塔潜力和细胞外聚合物物质 (EPS) 的分析.
主要成果:
- 成功合成了CS-TA,证实了CS-TA的结合.
- 最佳的CS-TA剂量为30 mg/g TS,可以显著降低含水量 (59.78%) 和CST (11.8s).
- CS-TA在广泛的pH范围内表现出有效性,在35°C的温度下表现最佳.
- 改善的脱水与增加的颗粒大小,泽塔潜力和污泥疏水性相关.
- 观察到重金属含量降低和漏毒性.
结论:
- CS-TA是一种高效和环保的花剂,用于增强污泥脱水.
- 该机制涉及电荷中和,吸附桥梁和增加污泥的疏水性.
- CS-TA的应用有助于减少环境风险,并促进可持续的污泥管理.
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