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首页> 外文期刊>Environmental Science & Technology >Soil Buffering Capacity Can Be Used To Optimize Biostimulation of Psychrotrophic Hydrocarbon Remediation
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Soil Buffering Capacity Can Be Used To Optimize Biostimulation of Psychrotrophic Hydrocarbon Remediation

机译:土壤缓冲能力可用于优化心理脱发碳氢化合物修复的生物刺激

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摘要

Effective bioremediation of hydrocarbons requires innovative approaches to minimize phosphate precipitation in soils oi different buffering capacities. Understanding the mechanisms underlying sustained stimulation of bacterial activity remains a key challenge for optimizing bioremediation-particularly in northern regions. Positron emission tomography (PET) can trace microbial activity within the naturally occurring soil structure ot intact soils. Here, we use PET to test two hypotheses: (1) optimizing phosphate bioavailability in soil will outperform a generic biostimulatory solution in promoting hydrocarbon remediation and (2) oligotrophic biostimulation will be more effective than eutrophic approaches. In so doing, we highlight the key bacterial taxa that underlie aerobic and anaerobic hydrocarbon degradation in subarctic soils. In particular, we showed that (ⅰ) optimized phosphate bioavailability outperformed generic biostimulatory solutions in promoting hydrocarbon degradation, (ⅱ) oligotrophic biostimulation is more effective than eutrophic approaches, and (ⅲ) optimized biostimulatory solutions stimulated specific soil regions and bacterial consortia. The knowledge gleaned from this study will be crucial in developing field-scale biodegradation treatments for sustained stimulation of bacterial activity in northern regions.
机译:烃的有效生物修复需要创新的方法来最小化土壤中的磷酸盐沉淀,不同的缓冲能力。了解持续刺激的潜在刺激的机制仍然是优化生物修复的关键挑战 - 特别是在北部地区。正电子发射断层扫描(PET)可以在完整的土壤中追踪天然土壤结构内的微生物活性。在这里,我们使用PET测试两个假设:(1)优化土壤中的磷脂利用性将优于促进碳氢化合物修复的通用生物刺激性溶液,并且(2)寡营性生物刺激将比富营养的方法更有效。在这样做时,我们突出了亚治疗中有氧和厌氧烃降解的关键细菌分类群。特别地,我们表明(Ⅰ)优化的磷酸盐生物利用度优于促进烃降解的通用生物刺激性溶液,(Ⅱ)寡营性生物致刺激比富营养方法更有效,(Ⅲ)优化的生物刺激溶液刺激特异性土壤区域和细菌组成溶液。本研究中收集的知识对于开发北部地区细菌活性持续刺激的田间级生物降解处理至关重要。

著录项

  • 来源
    《Environmental Science & Technology》 |2021年第14期|9864-9875|共12页
  • 作者单位

    College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N 5A8 Canada;

    College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N 5A8 Canada;

    College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N SA8 Canada;

    Department of Physics University of Regina Regina Saskatchewan S4S 0A2 Canada;

    Department of Physics University of Regina Regina Saskatchewan S4S 0A2 Canada;

    Department of Physics University of Regina Regina Saskatchewan S4S 0A2 Canada;

    Department of Physics University of Regina Regina Saskatchewan S4S 0A2 Canada Department of Mechanical and Marine Engineering Western Norway University of Applied Sciences Bergen Norway Nuclear Medicine and Radiation Biology Research Group Department of Clinical Medicine UiT The Arctic University of Norway 9037 Tromso Norway;

    Department of Chemistry University of Saskatchewan Saskatoon Saskatchewan S7N SC9 Canada College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N 5A8 Canada;

    College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N SA8 Canada;

    College of Agriculture and Bioresources Department of Soil Science University of Saskatchewan Saskatoon Saskatchewan S7N SA8 Canada;

  • 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

    bioremediation; biodegradation; phosphate; positron emission tomography; permafrost; microbial ecology;

    机译:生物修复;生物降解;磷酸盐;正电子发射断层扫描;永久冻土;微生物生态学;

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