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使用pH调节的生物原的合成有效地去除酸盐:与非生物原和生物原的比较洞察力

Upasana Jhariya¹, Mei-Fang Chien¹, Masaki Umetsu¹

¹Graduate School of Environmental Studies, Tohoku University, Miyagi 980-8579, Japan.

Journal of hazardous materials

|October 29, 2024

概括

生物石有效地从废水中去除有毒酸盐 (Se(VI)). 这种硫酸铁矿物质显示出作为稳定的替代石替代修复的稳定替代品.

科学领域:

环境科学环境科学
地质化学地质化学
微生物学微生物学

背景情况:

是必不可少的微量元素,但在高度下是有毒的,需要废水去除.
石是一种硫酸铁矿物质,已经显示出重金属衰减的潜力.
酸 (Se(VI)) 是污染水中普遍存在且有毒的形式.

研究的目的:

调查生物原石在废水中去除酸盐的疗效.
为了比较生物原石与非生物原石和生物原石的性能.
为了评估在修复过程中生物性jarosite的稳定性和硫酸盐释放.

主要方法:

生物性罗石通过在不同pH值 (1.5-4.0) 的Acidithiobacillus铁氧化物介导的Fe(II) 氧化合成.
为进行比较分析而合成的非生物原石和生物原石.
在不同初始Se(VI) 度 (0.2mM和2.0mM) 评估的酸盐去除效率.

主要成果:

生物原石 (J-2.5) 与其他石变体和非生物原石相比,表现出优异的Se(VI) 去除.
通过J-2.5的Se(VI) 去除效率在0.2mM时为63%,相当于施瓦特曼尼特 (77%).
来自生物原石的硫酸盐释放量明显低于来自施瓦特曼尼特的.

结论:

生物石是从废水中去除酸盐的高效材料.
在修复应用中,石为施瓦特曼尼特提供了更稳定的替代品.
这项研究突出了生物原石作为水处理中的可持续沉降器的潜力.

关键词:

在Jarosite上使用.施瓦特曼尼特 (Schwertmannite) 是一种重型人造石.删除Se(VI) 的删除是一种.硫酸盐的释放是可以释放的.废水是废水,废水就是废水.

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