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作为电催化剂的和硫酸盐从电废水的生物上循环

Xian-Zhong Fu¹, Yu-Ru Yang², Tian Liu²

¹School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China; CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China; Sustainable Energy and Environmental Materials Innovation Center, Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China.

|January 3, 2024

概括

本研究介绍了一种可持续的生物方法,将从电废水中循环升级为高效的电催化剂. 这个过程可以回收和硫酸盐资源,同时有效地处理废水.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
生物技术是生物技术.

背景情况:

从电废水到催化剂中再循环 (Ni) 提供了一个低碳的解决方案,但由于高成本和化学品的使用而受到阻碍.
现有的回收和废水处理方法通常需要昂贵的膜或大量的化学投入.

研究的目的:

开发一种成本效益高,可持续的生物上循环路径,同时从电废水中回收和硫酸盐.
为了合成和表征生物-NiFeS纳米颗粒作为高效的氧气进化电催化剂.

主要方法:

利用Desulfovibrio vulgaris用于废水中的生物-NiFeS纳米颗粒的生物合成,利用其硫酸盐减少和金属排毒能力.
优化生物-NiFeS纳米粒子通过300°C的化.
评估了氧化演化反应 (OER) 的电催化性能,并对真实电废水进行了测试.

主要成果:

优化的生物-NiFeS证明了高效的氧化演化电催化剂活性 (10mA·cm-1在247mV超电位,60.2mV·dec-1Tafel斜率),表现优于商业RuO2.2.
实现了真正废水的高清除率:99.5%Ni2+和41.0%SO42−.
从废水中成功展示了低成本制造电催化剂的方法.

结论:

生物上循环方法为处理含的电废水提供了一种可持续和经济的方法.
这种方法可以同时回收资源 (和硫酸盐) 和生产催化剂.
这些发现为金属离子回收和废水处理创新提供了新的途径.

关键词:

生物原材料纳米材料电催化剂是一种电催化剂.电废水处理废水电处理尼克尔尼克尔是什么意思减少硫酸盐的减少升级循环是什么?

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