Chemo-Sonic Pretreatment Approach on Marine Macroalgae for Energy Efficient Biohydrogen Production

The core objective of this analysis is to implement a combination alkaline (NaOH) and sonication pretreatment techniques produce energy-efficient biohydrogen from the marine macroalgae Chaetomorpha antennina. Anaerobic fermentation was implemented in control, sonic solubilization (SS) alkali (SAS) for 15 days. In production 40 mL H2/gCOD obtained. sonicator intensities varied 10% 90% period 1 h during SS pretreatment. About 2650 mg/L SCOD release with COD 21% obtained at an optimum intensity 50% 30 min duration, which 119 produced anaerobic fermentation. SAS performed by varying pH 8 12 conditions where 3400 mg/L, efficiency 26% maximum 150 high range 11 specific energy required (9000 kJ/kgTS) comparatively higher than (4500 kJ/kg TS). reduced half consumption when compared SS. Overall, found be energetically favorable field application.