Enhancing biogas production from hemp biomass residue through hydrothermal pretreatment and co-digestion with cow manure: Insights into methane yield, microbial communities, and metabolic pathways.

This study investigates the enhancement of biogas production from hemp biomass residue (HBR) through hydrothermal pretreatment and co-digestion with cow manure (CM). Hydrothermal pretreatment at 200 °C for 15 min significantly improved the methane yield from 311.5 to 434.

Synergistic sodium alginate- and biochar-immobilized cells for enhancing fermentative hydrogen production from food waste.

An immobilized hydrogen-producing consortium investigated biohydrogen production from food waste using a combination of sodium alginate and cassava rhizome biochar. We investigated the effect of varying the biochar concentration from 0 to 3% and the size of immobilized cells from 1 to 7 mm. Immobilized cells were prepared using 50% (v/v) enriched hydrogen-producing consortium, 2% (w/v) sodium alginate, and 0 to 3% (w/v) cassava rhizome biochar.

Two-step polyhydroxybutyrate production from hydrogenic effluent by freshwater microalgae sp. KKU-P1 and sp. KKU-P2 under mixotrophic cultivation.

This study aimed to produce PHB using hydrogenic effluent discharged from the biohydrogen production process with freshwater microalgae including sp. KKU-P1, and sp. KKU-P2.

Conversion of carbon dioxide in biogas into acetic acid by immobilized on porous support materials.

This study aimed to convert CO in biogas into acetic acid using immobilized cells on various support materials, including activated carbon, expanded clay, and coir. Immobilized cells and free cells were evaluated for their CO conversion ability into acetic acid using H as an electron donor at an H to CO in biogas ratio of 2:1 (v/v), 30 °C, 150 rpm. Results showed that immobilized cells on activated carbon increased CH content to 96.