Profitable disperser coupled surfactant pretreatment of aquatic phytomass for energy efficient solubilization and biomethanation: a study on lignin inhibition and its possible solutions

Abstract

The effect of cost-effective combined pretreatment on rice straw for lignin solubilization and the recovery of biomethane.

Effect of surfactant addition on disperser disintegration of water hyacinth: a new insight to overcome the inhibitory effects of lignin on methanogenesis and improve the energy and economic aspects

“…with an individual disperser pretreatment. 23–25 The released SCOD in the present study at the optimal point was comparable with the result of Banu et al 25 where the authors achieved nearly 831 mg L −1 of SCOD while pretreating aquatic phytomass. This could be due to the rapid fractionation of the WHB by forceful shear stress that was produced during severe pretreatment conditions.…”

“…and solubilization in excess of 10% was not reported to be achieved with this pretreatment. 23,25 The prole of biopolymer concentration (cellulose, hemicellulose and lignin) versus specic energy of DMD at the optimal power input of 16.4 kW is depicted in Fig. 2b.…”

“…5a that the trend of methane production is linked to methanogenic microbial growth. 25 The methane prole shows very slow growth in methane production for the rst ve days of biomethanation. Aer 5 days, the methane prole shows very low levels of methane production (0.024, 0.05 and 0.15 L g −1 COD) for the control, DMD and SDMD, respectively.…”

“…Many researchers have studied the combined surfactant and disperser pretreatment of various biomasses (waste-activated sludge, aquatic phytomass, macroalgal biomass, etc.). [23][24][25] However, these authors focused only on the liquefaction and energy efficiency of the pretreatments and these reports do not focus on the mechanistic action of the combined pretreatments. Some researchers have focused only on the individual disperser or individual surfactant pretreatments.…”

“…). 23–25 However, these authors focused only on the liquefaction and energy efficiency of the pretreatments and these reports do not focus on the mechanistic action of the combined pretreatments. Some researchers have focused only on the individual disperser or individual surfactant pretreatments.…”