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Perspective on enhancing the anaerobic digestion of waste activated sludge.
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2019-12-09 , DOI: 10.1016/j.jhazmat.2019.121847 Ying Xu 1 , Yiqing Lu 2 , Linke Zheng 1 , Zhiwei Wang 1 , Xiaohu Dai 3
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2019-12-09 , DOI: 10.1016/j.jhazmat.2019.121847 Ying Xu 1 , Yiqing Lu 2 , Linke Zheng 1 , Zhiwei Wang 1 , Xiaohu Dai 3
Affiliation
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Anaerobic digestion (AD) of waste activated sludge (WAS) is an important bio-energy strategy that has been hindered by low conversion efficiency. This paper presents a comprehensive review of research on the sludge's property and enhancing AD of WAS, and proposes two perspectives of material structure and microbial activity on improving AD efficiency. In the first part of this review, the key principle problems for hindering AD efficiency are identified based on the concept of AD. Then, the possibility that the complex microstructure and composition of WAS are responsible for poor biodegradability is considered and main methods for enhancing AD are summarized. In the third part, according to the published works, the main knowledge gaps in research are recognized as the identification and specific activity adjustment of functional microbes, the understanding of key constituents of WAS and their interactions, the deciphering of complex structure of sludge organic substance, and the revealing of relationships between complex nature of WAS and biodegradability. Further discussions reveal that to enhance AD more studies should be centered on the sludge's structure and properties in future. However, this review is expected to provide the clear and accurate research directions for enhancing AD efficiency of WAS.
中文翻译：
加强废物活性污泥厌氧消化的观点。
废物活性污泥（WAS）的厌氧消化（AD）是一种重要的生物能源策略，其转化效率低已受到阻碍。本文对污泥的性质和提高WAS的AD进行了全面的综述，并提出了从材料结构和微生物活性两个方面来提高AD效率的观点。在本综述的第一部分中，基于AD的概念确定了阻碍AD效率的关键原理问题。然后，考虑了WAS复杂的微观结构和成分导致生物降解性差的可能性，并总结了增强AD的主要方法。在第三部分中，根据已发表的著作，研究中的主要知识空白被认为是对功能微生物的鉴定和比活的调整，对WAS的关键成分及其相互作用的理解，对污泥有机物复杂结构的破译以及对WAS复杂性质与生物降解性之间关系的揭示。进一步的讨论表明，为了增强抗污垢能力，今后应将更多的研究集中在污泥的结构和性质上。但是，该综述有望为提高WAS的AD效率提供清晰准确的研究方向。
更新日期：2019-12-09
中文翻译：
加强废物活性污泥厌氧消化的观点。
废物活性污泥（WAS）的厌氧消化（AD）是一种重要的生物能源策略，其转化效率低已受到阻碍。本文对污泥的性质和提高WAS的AD进行了全面的综述，并提出了从材料结构和微生物活性两个方面来提高AD效率的观点。在本综述的第一部分中，基于AD的概念确定了阻碍AD效率的关键原理问题。然后，考虑了WAS复杂的微观结构和成分导致生物降解性差的可能性，并总结了增强AD的主要方法。在第三部分中，根据已发表的著作，研究中的主要知识空白被认为是对功能微生物的鉴定和比活的调整，对WAS的关键成分及其相互作用的理解，对污泥有机物复杂结构的破译以及对WAS复杂性质与生物降解性之间关系的揭示。进一步的讨论表明，为了增强抗污垢能力，今后应将更多的研究集中在污泥的结构和性质上。但是，该综述有望为提高WAS的AD效率提供清晰准确的研究方向。
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