Open AccessBio-hydrogen production by co-digestion of domestic wastewater and biodiesel industry effluent
Author(s) -
Jyotsana Prakash,
Rakesh Sharma,
Sanjay K.S. Patel,
In-Won Kim,
Vipin Chandra Kalia
Publication year - 2018
Publication title -
plos one
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.99
H-Index - 332
ISSN - 1932-6203
DOI - 10.1371/journal.pone.0199059
Subject(s) - biodiesel , effluent , pulp and paper industry , biodiesel production , wastewater , chemistry , biofuel , waste management , digestion (alchemy) , hydrogen production , environmental science , bioenergy , food science , hydrogen , biochemistry , environmental engineering , engineering , chromatography , catalysis , organic chemistry
The increasing water crisis makes fresh water a valuable resource, which must be used wisely. However, with growing population and inefficient waste treatment systems, the amount of wastewater dispelled in rivers is increasing abominably. Utilizing this freely available waste-water along with biodiesel industry waste- crude glycerol for bio-hydrogen production is being reported here. The bacterial cultures of Bacillus thuringiensis strain EGU45 and Bacillus amyloliquefaciens strain CD16 produced2.4–3.0 L H 2 /day/L feed during a 60 days continuous culture system at hydraulic retention time of 2 days. An average H 2 yield of 100–120 L/L CG was reported by the two strains. Recycling of the effluent by up to 25% resulted in up to 94% H 2 production compared to control.