Strategies for boosting biomethane production from rice straw: A systematic review

Abstract Anaerobic digestion (AD) is considered as the best route to utilise the bio-energy potential of rice straw (RS). However, the excessive lignocellulosic content of RS curbs the biomethane potential during AD and dilutes its energy, environmental, and economic benefits. In this review, several strategies (pretreatment, co-digestion, trace element dosing, etc.) to delignify RS and improve the biomethane yield are extensively reviewed with their limitations, through systematically selected literature. In addition, innovative ideas based on recently reported research are also included. The results suggest that combining pretreatment methods and co-digestion is essential for enhanced biomethane production. Furthermore, a possible concept for the current development of RS-AD is proposed to improve the circular economy concept. Moreover, this study presents a future research direction to curtail the gaps for enhanced biomethane production, microbial community shifts and the possible utilisation of digestate.

• Publication year

  2021

• Venue

  Bioresource Technology Reports

• Publication date

  2021-09-01

• Fields of study

  Chemistry, Environmental Science

• Identifiers
  DOI 10.1016/j.biteb.2021.100813
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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