Biohydrogen Generation From Macroalgal Biomass, Chaetomorpha antennina Through Surfactant Aided Microwave Disintegration

Abstract

This present work intends to improve on the possibility of enhancing solubilization and biohydrogen (H 2) production from Chaetomorpha antennina (marine macroalgae) through surfactants (ammonium dodecyl sulfate-ADS) aided with microwave disintegration pretreatment (SMD). Microwave disintegration (MD) was implemented by varying power intensity from 10 to 70% for the time period of 0 to 30 min. In microwave disintegration (MD), maximum soluble organic release of 1,260 mg/L and solubilization of 14.6% were achieved within 15 min. Through surfactants, soluble organic release improves up to 1,490 mg/L at the optimum MD power condition of 40%. High solubilization of 17.3% was achieved at dosage of 0.0035 g/g TS. Higher H 2 generation of 74.5 ml/g COD was obtained in the SMD method. SMD pretreatment therefore reduces pretreatment time and increases the organic release compared to MD.

Surfactant induced microwave disintegration for enhanced biohydrogen production from macroalgae biomass: Thermodynamics and energetics

“…After well acclimatized, higher hydrogen generation of 54.9 mL is attained in SIMD comparing 14 mL (control) and 39.7 mL (MD), respectively. Similar, Kumar et al (2019b) stated that about 74.5 mL of biohydrogen produced by treating Chaetomorpha antennina through surfactant induced microwave process. By using modified Gompertz model, the kinetic parameters are calculated and the correlation coefficient (R 2 ) values falls between 0.993 and 0.996 which implies that the predicted and experimental values are good.…”

An Overview of Challenges for the Future of Hydrogen

“…where En represents the net energy (kWh), Eo is the output energy (kWh), and Ei is the input energy (kWh) [18]. This energy analysis is crucial for assessing the financial viability of large-scale production units.…”

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

“…The output biohydrogen production energy of (0.09 kWh/kg solids) was obtained for both SS and SAS since the SCOD solubilization efficiency was taken as 21% to derive the energy parameters. Net energy and energy ratio are the two fundamental factors that conclude the energy competence and pretreatment efficiency [2,45,53,54]. The net energy (−0.01 kWh) and energy ratio (0.8) for SS were less compared to SAS, where the net energy (0.04 kWh) and an energy ratio of (1.8) were obtained.…”

“…Furthermore, most countries extract energy from many natural resources such as wind, hydropower and solar power. Biomass is a significant potential source of energy among these energy resources [2]. As a photosynthetic organism, marine macroalgae has the promising potential to act as a bioresource for biofuel production.…”