Effect of protein on biohydrogen production from starch of food waste

Abstract

This study demonstrated the influence of protein on biohydrogen production from carbohydrates, especially starch, by using different combinations of two model food wastes, rice as starch-rich and soybean residue as protein-rich food waste. It was found the maximum specific hydrogen production potential, 0.99 mol H2/mol initial starch as glucose, and the maximum specific hydrogen production rate, 530 ml H2/h g-VS, occurred at a starch/protein ratio of 1.7. The protein content in the initial food waste not only provided buffering capacity to neutralize the volatile fatty acids as concurrent products but also enhanced the hydrogen production by providing readily available organic nitrogen such as soluble proteins and amino acids to microorganisms.

Hydrogen and methane potential based on the nature of food waste materials in a two-stage thermophilic fermentation process

“…The nitrogen deficiency also caused continuous H 2 production to cease [9]. The organic protein content in feedstock needs to be optimized to achieve the maximum possible amount of H 2 from carbohydrate [10]. The problem with food waste is the variations in carbohydrate and protein types and the content of the mixture.…”

Factors influencing the production of Hidrogen by fermentative processes

“…However, studies indicate that a combination of proteins and carbohydrates results in greater production of H 2 . According to DING et al (2008), the presence of protein among the substrates not only increases the ability of the process to neutralize volatile acids due to the alkalinity of the process but also increases the production of H 2 by off ering readily available organic nitrogen in the form of soluble protein and amino acids to the microorganisms (GHIMIRE et al, 2016).…”

“…However, studies indicate that a combinati carbohydrates results in greater production of H 2 . According to DING et al (2008 protein among the substrates not only increases the ability of the process to neutralize to the alkalinity of the process but also increases the production of H 2 by offering 2010), food waste (KIN & SHIN, 2008), dairy waste (MOHAN et al, 2008), pulp of cassava (PHOWAN et al, 2010), glycerol waste (ITO et al, 2005), sugarcane bagasse (PATTRA et al, 2008), sugarcane vinasse (LAZARO et al, 2014) and others proved to be susceptible for dark fermentation.…”

Carbon Dioxide Utilization for an Enhanced Biohydrogen Production of a Biomass Hydrolysate

“…Most of the studies on H 2 production are carbohydrate-based (Bai et al, 2004;Ding et al, 2008;Lin and Lay, 2004;Roychaudhury et al, 1988;Zhang et al, 2003) since these materials can be improved by inhibition of the activity of H 2 -quenching pathways or by reduction of H 2 and CO 2 partial pressure (Nath and Das, 2004;Ewan and Allen, 2005;Kim et al, 2008;Nandi and Sengupta, 1998;Hallenbeck and Benemann, 2002;Bai et al, 2004;Ding et al, 2008;Lin and Lay, 2004;Roychaudhury et al, 1988;Zhang et al, 2003;Das and Veziroglu, 2001;Lamed et al, 1988;Oh et al, 2003;Park et al, 2005;Kim et al, 2004).…”