石的性浸出对硫酸盐还原活性和使用不同来源的无氧微生物注射剂的细菌群体组成的影响
Ayoub Bounaga1, Anwar Alsanea2, Mohammed Danouche1
1Department of Chemical & Biochemical Sciences-Green Process Engineering (CBS), Mohammed VI Polytechnic University (UM6P), Benguerir, 43150, Morocco.
The Science of the total environment
|August 17, 2023
概括
这项研究优化了从石中硫酸盐的出,以通过减少硫酸盐的细菌 (SRB) 增强生物硫酸盐的减少. 研究确定了有效的SRB联盟和处理方法,以产生高度的硫化物,这对于元素硫的回收至关重要.
科学领域:
- 环境微生物学 环境微生物学
- 生物技术是生物技术.
- 工业副产品的价值化 工业副产品的价值化
背景情况:
- 石 (PG) 是酸盐工业的副产品,富含硫酸盐 (SO42−).
- 减少硫酸盐的细菌 (SRB) 可以将硫酸盐转化为硫化,这是元素硫回收的关键步骤.
- 从PG中优化硫酸盐出对于有效的生物硫酸盐减少至关重要.
研究的目的:
- 为了优化硫酸盐从 (PG) 的液.
- 通过使用孤立的SRB联盟来实现高生物硫酸盐减少.
- 为了产生高度的硫化物,用于元素硫的回收.
主要方法:
- 从各种环境样本中分离和丰富五个SRB联盟.
- 使用不同电子捐赠者 (乳酸盐,乙酸盐,葡萄糖) 的PG液测试SRB活性.
- 用NaOH溶液 (2%和5%) 处理PG,以增强硫酸盐出.
- 对SRB联盟的元基因组学分析.
主要成果:
- 在IS (工业污泥) 联盟中,乳酸盐的硫酸盐降解率最高 (81.5%).
- 5%的NaOH处理实现了从PG中释放97%的硫酸盐,液被稀释到12.4g·L−1 SO42−.
- 甲基因组分析显示,在使用PG的联盟中,Deltaproteobacteria的丰富性增加,包括已知的和新的SRB属.
结论:
- 优化的硫酸盐和SRB联盟可以有效地增强生物硫酸盐从的减少.
- 该研究表明,特定的SRB联盟和NaOH处理对于高效的硫酸盐回收具有潜力.
- 发现的新型SRB属显示了使用PG作为硫酸盐来源减少硫酸盐的显著潜力.
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