...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Simple Organic Carbon Sources and High Diversity Inocula Enhance Microbial Bioneutralization of Alkaline Bauxite Residues
【24h】

Simple Organic Carbon Sources and High Diversity Inocula Enhance Microbial Bioneutralization of Alkaline Bauxite Residues

机译：简单的有机碳源和高多样性接种物增强碱性铝土矿残留物的微生物双激序

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Bioneutralization of pH by microbial fermentation of added carbon substrates is a promising new method for remediation of the 1.7 GT/ yr of alkaline mining tailings produced globally. Here, we present the first study to systematically compare and optimize the efficacy of microbial inocula of varying diversities, structures, and provenance and organic carbon substrates of varying complexities on the rate and extent of pH bioneutralization in alkaline bauxite residue tailings. Laboratory-scale bioreactors inoculated with soda lake sediments or with monosaccharide substrates added had a significantly lower minimum pH (＜8) and a significantly higher maximum rate of pH neutralization (＞0.02 μmol H+ day~(-1)) and achieved these in significantly less time (＜26 days) compared to bioreactors with other inocula or substrates. The soda lake sediment introduced a significantly higher-diversity microbial community with a distinct structure (dominated by Euryarchaeota and Bacteroidetes, rather than Acidobacteria and Actinobacteria), supporting higher acetate and formate-yielding fermentation pathways compared to other inocula. The strong performance of monosaccharides is attributed to widespread microbial capacity for efficient fermentation. Using either monosaccharide carbon substrates or soda lake sediments is recommended to maximize bioneutralization efficiency at the industrial scale.
机译：通过微生物发酵的加入碳基材的双抗体化pH是一个很有希望修复全球生产的1.7 gt / Yr的碱性采矿尾矿的新方法。在这里，我们提出了第一项研究以系统地比较和优化不同多样性，结构和物质的微生物接种物的疗效，不同的复杂性的不同复杂性和有机碳基材对碱性铝土矿残留尾矿中pH双升级的速率和程度的速率和程度。用苏打苏湖沉积物或加入的单糖底物接种的实验室型生物反应器具有显着较低的最低pH（<8）和显着较高的pH中和速率（>0.02μmolH+日〜（-1）），并显着实现了这些与具有其他接种器或基材的生物反应器相比减少时间（<26天）。苏打湖沉积物引入了具有明显高度多样化的微生物群体，具有明显的结构（由EuryarchaeoTa和Bacteropetes，而不是acoricobacteres，而不是achicobacteria），与其他接种物相比，支撑高醋酸酯和甲酸甲酸产物发酵途径。单糖的强大性能归因于广泛的微生物能力以获得有效发酵。建议使用单糖碳基材或苏打湖沉积物以最大化工业规模的双抗体化效率。

著录项

  • 来源
    《Environmental Science & Technology》 |2021年第6期|3929-3939|共11页
  • 作者

    Talitha C. Santini; Jack C. Wang; Kimberley L. Warren; Giselle Pickering; Maija J. Raudsepp;

  • 作者单位

    UWA School of Agriculture and Environment The University of Western Australia Crawley Western Australia 6009 Australia School of Earth and Environmental Sciences The University of Queensland Brisbane Queensland 4072 Australia;

    School of Biomedical Sciences The University of Queensland Brisbane Queensland 4072 Australia;

    School of Earth and Environmental Sciences The University of Queensland Brisbane Queensland 4072 Australia;

    School of Earth and Environmental Sciences The University of Queensland Brisbane Queensland 4072 Australia;

    School of Earth and Environmental Sciences The University of Queensland Brisbane Queensland 4072 Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号