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用于酸性废水预处理的多功能伊胺-酸盐双网水凝,具有依赖交叉连接度的结构性质
Yu Wang1, Chunrong Wang1, Yansen Wei1
1School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Bioresource technology
|January 22, 2026
概括
一种新型的多糖化水凝为酸性矿井排水 (AMD) 预处理提供可调节的pH调节. 这种材料提供了温和的,双向的pH控制和增强的中和,显示出对废水整治的希望.
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:
- 酸性矿井排水 (AMD) 带来了重大的环境挑战,需要有效的pH预处理以实现稳定的修复.
- 现有的AMD pH控制方法往往缺乏效率,可控性,或引入突然的pH变化.
研究的目的:
- 开发一种基于多糖的多功能水凝,用于精确和温和地调节酸性和性溶液的pH值.
- 研究用于废水处理应用的水凝的调节性结构-属性关系.
主要方法:
- 制造一个可调节交联的伊米因-酸盐双网水凝 (PVA/QCMC/DSA/BA).
- 在一系列酸性和性条件下评估水凝的pH调节能力.
- 开发一种加载CaCO3的水凝变体,以提高中和性.
- 描述水凝的特性,包括膨胀率,机械强度,自我愈合和抗菌活性.
- 建立剂量反应模型来预测pH调节性能.
主要成果:
- 水凝证明了双向pH调节,将pH 3.0的溶液中和到8.0和pH 11.0的溶液中和到9.5而不会超标.
- 可调节的交叉连接允许膨胀比率高达4110.3%,pH调整率高达50%.
- 在高酸性条件下,加载CaCO3的变体显示了增强的持续中和.
- 水凝表现出良好的机械性能 (延长>1000%),自我愈合 (72-100%) 和强大的抗菌活性 (>99%的抑制).
结论:
- 开发的多糖水凝为酸性废水的pH预处理提供了可控制和有效的解决方案.
- 可调节的结构-功能关系和多功能性质使其成为AMD修复的有希望的候选人.
- 预测剂量反应模型支持其在工业废水处理中的实际应用.
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