Abstract
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•Influence of tenside on sonic disintegration potential of biomass was investigated.•Sonic-tenside disintegration was effective at 0.07 g/g SS tenside dosage.•At an energy input of 9600 kJ/kg TS, biomass lysis of 23.9% was achieved.•Coupled pretreatment enhanced hydrolysis and biomethane generation.•Tenside lowers sonic energy usage and it resulted a net gain of 2 USD/ton of biomass.
An exploration into the symbiotic impact of sonic-tenside (SDBS - sodium dodecyl benzene sulfonate) on biomass disintegration potential and to reduce the energy consumption was studied. At optimized condition (specific energy input 9600 kJ/kg TS; SDBS dosage 0.07 g/g SS), higher percentage of biomass lysis and solids reduction (23.9% and 19.8%) was obtained in blended sonic-tenside disintegration (STD), than sonic disintegration (SD) (17.6% and 9.8%). The bioacidogenic potential (BAP) assay in terms of volatile fatty acids (VFA) production (722 mg/L) was found to be higher for STD, in comparison to SD (350 mg/L). The impact of STD on anaerobic digestion was evident from its methane yield (0.239 g/g COD), higher than SD (0.182 g/g COD). A monetary evaluation of the present study provides a net gain of 2 USD/ton for STD, indicating the profitability of the technique.