Integrating strategies for sustainable conversion of waste biomass into dark-fermentative hydrogen and value-added products

Sanjay K.S. Patel, Devashish Das, Sun Chang Kim, Byung-Kwan Cho, Vipin Chandra Kalia and Jung-Kul Lee

Renewable and Sustainable Energy Reviews, 2021, vol. 150, issue C

Abstract: Inefficient waste management and associated environmental pollution are exhausting societies’ precious renewable resources. Moreover, their effects on human health adversely affect the global economic scenario. These adverse effects are a constant cause of concern for environmental and health management. This review presents alternatives to uneconomical and non-eco-friendly methods for waste management and treatment. The multistep microbial anaerobic digestion (AD) process has the potential to metabolize up to 95% of organic matter to energy-rich methane (CH4) and carbon dioxide. The intermediates of AD can be transformed into value-added products, such as hydrogen (H2), polyhydroxyalkanoates (PHAs), and CH4. The unique feature of these value-added products is their eco-friendly nature (non-polluting and biodegradable). The use of biowaste as feed makes the process economical. A few limiting factors that must be circumvented include (i) the slow metabolic rates of methanogens, (ii) high susceptibility to oxygen concentrations, and (iii) the complexity of biowaste. Here, we focus on using biowaste as a feed for integrating dark-fermentative H2 production processes with those of i) photo-fermentative H2, ii) PHAs, and (iii) CH4. This strategy could encourage a transition to an economy based on sustainable waste management and energy generation.

Keywords: Bioactive molecules; Biofuel; Biohydrogen; Biomethane; Fermentation; Polyhydroxyalkanoates (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S1364032121007723
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:rensus:v:150:y:2021:i:c:s1364032121007723

Ordering information: This journal article can be ordered from
http://www.elsevier.com/wps/find/journaldescription.cws_home/600126/bibliographic
http://www.elsevier. ... 600126/bibliographic

DOI: 10.1016/j.rser.2021.111491

Access Statistics for this article

Renewable and Sustainable Energy Reviews is currently edited by L. Kazmerski

More articles in Renewable and Sustainable Energy Reviews from Elsevier
Bibliographic data for series maintained by Catherine Liu ().