A review on dark fermentative biohydrogen production from organic biomass: Process parameters and use of by-products

Advances in biological hydrogen production processes

Fermentative hydrogen production: Principles, progress, and prognosis

Hydrogen applicability in the power, chemical and petrochemical industries is constantly growing. Efficient methods of hydrogen generation from renewable sources, including waste products, are currently being developed, even though hydrogen is mainly produced through steam reforming or thermal cracking of natural gas or petroleum fractions. In paper alternative methods of hydrogen production with a particular emphasis on dark fermentation are discussed. The review compiles essential information on strains of bacteria used in the production of hydrogen from waste products in the agroindustry and from lignocellulosic biomass. The effect of such parameters as kind of raw material, method of processing, temperature, pH, substrate concentration, partial pressure of hydrogen, hydraulic retention time, method of inoculum preparation and the type and operating parameters of a reactor on the yield of dark fermentation is discussed. The review aims at presentation of current state of knowledge on the dark fermentation process utilizing waste materials as substrates. The results of investigations with emphasis on the most important issues regarding operating parameters of dark fermentation are also included.

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Hydrogen production from biomass using dark fermentation

Advances in biohydrogen production processes: An approach towards commercialization

When the partial pressure of H(2) was decreased by lowering the total pressure in the headspace of the reactor in a batch fermentation process from 760 mm Hg to 380 mm Hg containing Enterobacter cloacae, the molar yield of H(2) increased from 1.9 mol to 3.9 mol H(2)/mol glucose. The maximum production rate was 0.017 mmol H(2)/h l at 380 mm Hg. The lag period as well as total batch time of H(2) production decreased using a decreased partial pressure.

Improvement of Biohydrogen Production Under Decreased Partial Pressure of H2 by Enterobacter cloacae

DFT simulation of NaFeSnO4 structure, electronic and electrochemical properties validated by experimental results

Surfactant assisted synthesis of Ni3V2O8 and their application as a supercapacitor

Synthesis of C-V2O3 composite for electrode materials of rechargeable batteries

ABSTRACT Acrylic acid (AA) and Acrylamide (AM) are copolymerised to produce copolymer of Poly-acrylic acid-co-acrylamide (PAA) in the aqueous solution of Polyvinyl alcohol (PVA). Both the polymers PVA and PAA were cross-linked in situ by glutaraldehyde and N, N O-methylene bis acrylamide (MBA) respectively using 2 mass% of polymer basis for both of them. Thus, three different full interpenetrating network (FIPN) hydrogels were synthesised varying the mass ratio of PVA to PAA. The hydrogel of PVA: PAA  = 1:0.50 composition designated as PAA50 found competitive for separating Malachite green from its 50 ppm aqueous solution by adsorption compared to the other two. PAA50 was further modified by incorporating 2, 5, 8 and 10 mass% nano size sodium monomontellite filler and produced four filled FIPN hydrogels designated as PAA52, PAA55, PAA58 and PAA510, respectively. These four nano-filled FIPN hydrogels along with unfilled PAA50 and pure nano size sodium monomontellite were used for adsorption in same dye solution of 5, 10, 25, 50, 75 and 100 ppm concentrations and different pH of 4, 7, 9, 10 & 11. Highest 98.039% dye removal was done by PAA58 from 75 ppm feed at 9 pH. 93.7% recovery was observed at 3 pH in desorption study. GRAPHICAL ABSTRACT

Biswajit Mandal

Papers

Improvement of Biohydrogen Production Under Decreased Partial Pressure of H2 by Enterobacter cloacae

DFT simulation of NaFeSnO4 structure, electronic and electrochemical properties validated by experimental results

Surfactant assisted synthesis of Ni3V2O8 and their application as a supercapacitor

Synthesis of C-V2O3 composite for electrode materials of rechargeable batteries

Adsorptive separation of dye by filled polymeric FIPN hydrogel