Anaerobic digestion of sewage sludge for biogas & biohydrogen production: State-of-the-art trends and prospects

Advancement in the anaerobic digestion of sewage sludge for biogas production is constantly required for effective commercialization. There is great interest in exploring the scientometric and technical assessment in biogas production using sewage sludge from various sources in the anaerobic digestion process. Therefore, this work provides a bibliometric and technical study of anaerobic digestion for biogas production from sewage sludge in the last ten years, based on Web of Science data. The vital parameters of the bibliometric study are authors, countries, and institutional collaboration along with the authors' keywords. In terms of technical assessment, challenges are highlighted with critical analysis of previous work performed both on a laboratory scale and on a pilot scale. The study recommends key considerations and new combination techniques to enhance biohydrogen production with optimized process conditions which will provide vital economic impact for technological adaptation and commercialization.

Automated summary

This work presents a bibliometric and technical study on anaerobic digestion for biogas production from sewage sludge in the past ten years. The study evaluates the authors, countries, institutional collaboration, and keywords as vital parameters in the bibliometric analysis. The technical assessment focuses on highlighting challenges from previous laboratory and pilot-scale studies. The study recommends key considerations and new combination techniques to enhance biohydrogen production and attain optimized process conditions for significant economic impact in technological adaptation and commercialization.