在固定床上进行的一项研究,用于通过修改的性素-藻酸盐复合水凝去除Pb
Qiaorui Wang1, Dingyun Liang1, Yalan Yang1
1Yan'an Key Laboratory of Agricultural Solidiste Resource Utilization, School of Petroleum Engineering and Environmental Engineering, Yan'an University 716000 P.R. China wang_qiaorui@foxmail.com niuzhirui@yau.edu.cn.
RSC advances
|July 29, 2024
概括
这项研究开发了一种由性木质素 (AL) 和trimercapto-s-triazine三盐 (TMT) 制成的复合水凝,用于有效地从水中去除 (Pb). 液凝显示出用于废水处理的优良再生能力.
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:
- 重金属污染,特别是 (Pb),对水生生态系统和人类健康构成重大风险.
- 开发高效,具有成本效益的方法来从废水中去除重金属至关重要.
- 性木质素 (AL) 和三三盐 (TMT) 作为水资源整治的可持续材料具有潜力.
研究的目的:
- 合成和描述一种新型复合液凝,用于从水溶液中去除双价 (Pb(ii)).
- 在各种操作条件下,研究水凝在固定床柱系统中的性能.
- 评估复合水凝的再生能力,用于重金属去除重复使用.
主要方法:
- 复合水凝珠使用性木质素 (AL) 与三三盐 (TMT) 和藻酸盐 (SA) 联合修改而制备.
- 水凝珠被装入固定床柱中进行连续流体实验.
- 进行了吸附-脱附循环,以评估水凝的再生效率.
主要成果:
- 在0.159L min-1的流入速度,40厘米的水凝填充高度,初始Pb2度为10毫克L-1和底部流入时实现了最佳Pb2去除.
- 突破曲线在第三次吸附-脱吸周期650分钟后达到平衡.
- 水凝表现出良好的再生能力,最初的突破平衡时间为855分钟.
结论:
- 开发的AL-TMT-SA复合水凝是有效的去除水中的.
- 具有优化参数的固定床柱系统显示出对实际废水处理的承诺.
- 水凝的良好的再生能力支持其对可持续重金属整治应用的潜力.
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