A specious relevance between theory and practice: Insights into temperature parameter and multi-phase strategy of anaerobic digestion of straw

The Science of the Total Environment
Yu HuaXiaohu Dai

Abstract

Anaerobic digestion (AD) of straw is a highly complex and dynamic process. The temperature range of mesophilic (30-40 °C) and thermophilic (50-65 °C) are usually recommended in textbook notion. The two-phase strategy is usually applied based on the classical theory, including acidification-phase and methanation-phase. However, both the optimized temperature parameter and the enhanced multi-phase strategy solely focus on the local AD process. A specious relevance between theory and practice during AD process of straw has always been argued. Classical AD theory was not necessarily the sufficient approach to guide the anaerobic biological transformation of straw. More profound investigations of optimum temperature are still needed, uniquely synergistic mechanisms of functional microorganisms, as well as process stability, should be taken into account. Besides, additional research should focus on the matching between the physicochemical properties and process parameters/strategies choosing. A multi-stage operation strategy based on straw material composition is a potential operation approach to improve its efficiency. Furthermore, more comprehensive attention should be paid to the collaborative response mechanism by coupling substr...Continue Reading

References

Jul 27, 2011·Environmental Science & Technology·Abdul-Sattar Nizami, Jerry D Murphy
Sep 9, 2018·Bioresource Technology·Sebastian HupfaufSabine Marie Podmirseg

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