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针对耐用膜催化剂薄膜反应器的优化双金属比率,用于处理酸盐污染水

Juliana Levi¹, Bongyeon Jung¹, Hunter P Jacobs²

¹Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-3005, United States; Biodesign Swette Center for Environmental Biotechnology, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-5701, United States.

The Science of the total environment

|June 10, 2024

概括

这项研究优化了膜催化剂薄膜反应器 (MCfR) 中的与催化剂比率,以有效地去除酸盐. 性能最好的催化剂实现了高酸盐减少,尽管长期使用需要解决催化剂损失和pH值变化.

科学领域:

环境工程环境工程
催化剂是一种催化剂.
水处理处理水的方法

背景情况:

酸盐污染构成了全球水质挑战.
传统的处理方法会产生集中废物流.
膜催化剂薄膜反应器 (MCfR) 提供了一种没有浪费的新型脱方法.

研究的目的:

研究与 (In:Pd) 摩尔比对MCfR中脱率的影响.
评估在连续流MCfR中优化In-Pd催化剂的长期性能.
为了确定影响脱效率的因素,随着时间的推移.

主要方法:

在批量模式的MCfR中评估了11个In-Pd双金属催化剂薄膜,具有不同的摩尔比率 (0.0029到0.28).
根据In:Pd比率来确定酸盐去除率.
进行了连续流体实验超过60天使用优化的In:PdMCfRs与酸盐的自来水.

主要成果:

亚酸盐去除显示出火山形的依赖于含量,在0.045.5的In:Pd比率达到峰值.
最佳的In:Pd催化剂实现了0.19 mgNO3--N-min-1 L-1的最大酸盐去除率.
连续流处理显示了三个阶段:初始的高效率,下降和稳定的脱.
催化剂损失 (Pd和In) 和升高的pH被确定为效率下降的关键因素.

结论:

优化的In:Pd双金属催化剂在MCfR中显示出高效的酸盐去除的潜力.
长期的脱效率受到催化剂失活和pH值增加的限制.
需要进一步的研究,以减轻催化剂损失和持续的酸盐去除的pH影响.

关键词:

催化剂是一种催化剂.脱化过程中的脱.膜催化膜反应堆中的催化膜反应堆亚酸盐是一种酸盐.处理水处理水处理水处理

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