4.7 Article

Construction of a novel microbial consortium valued for the effective degradation and detoxification of creosote-treated sawdust along with enhanced methane production

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 418, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2021.126091

关键词

Polycyclic aromatic hydrocarbons; Lignocellulosic biomass; Microbial consortium; Toxicity; Anaerobic digestion

资金

  1. National Key R&D Program of China [2018YFE0107100]
  2. National Natural Science Foundation of China [31772529]
  3. Priority of Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [4013000011]
  4. Egyptian Ministry of Higher Education & Scientific Research (MHESR), Support of Excellent Students Projects (SESP), Egypt
  5. Taif University Researchers Supporting Project, Taif University, Taif, Saudi Arabia [TURSP-2020/95]
  6. Operational Programme Competitiveness, Entrepreneurship and Innovation (NSRF) [MIS-5002495]
  7. European Union (European Regional Development Fund)

向作者/读者索取更多资源

This study demonstrates the successful degradation of birchwood sawdust using a novel bacterial consortium SST-4, which can concurrently remove lignocellulose and creosote compounds, leading to efficient bioenergy production.
Lignocellulosic biomass represents an unlimited and ubiquitous energy source, which can effectively address current global challenges, including climate change, greenhouse gas emissions, and increased energy demand. However, lignocellulose recalcitrance hinders microbial degradation, especially in case of contaminated materials such as creosote (CRO)-treated wood, which necessitates appropriate processing in order to eliminate pollution. This study might be the first to explore a novel bacterial consortium SST-4, for decomposing birchwood sawdust, capable of concurrently degrading lignocellulose and CRO compounds. Afterwards, SST-4 which stands for molecularly identified bacterial strains Acinetobacter calcoaceticus BSW-11, Shewanella putrefaciens BSW-18, Bacillus cereus BSW-23, and Novosphingobium taihuense BSW-25 was evaluated in terms of biological sawdust pre-treatment, resulting in effective lignocellulose degradation and 100% removal of phenol and naphthalene. Subsequently, the maximum biogas production observed was 18.7 L/kg VS, while cumulative methane production was 162.8 L/kg VS, compared to 88.5 without microbial pre-treatment. The cumulative energy production from AD-I and AD-II through biomethanation was calculated as 3177.1 and 5843.6 KJ/kg, respectively. The pretreatment process exhibited a significant increase in the energy yield by 83.9%. Lastly, effective CRO detoxification was achieved with EC50 values exceeding 90%, showing the potential for an integrated process of effective contaminated wood management and bioenergy production.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据