Biohydrogen production from macroalgae via sonic biosurfactant disintegration: An energy efficient approach

IF 12.4 Q1 ENVIRONMENTAL SCIENCES Resources Environment and Sustainability Pub Date : 2023-03-01 DOI:10.1016/j.resenv.2022.100093

Shabarish S. , Tamilarasan K. , Rajesh Banu J. , Godvin Sharmila V.

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引用次数: 3

Abstract

An energy-efficient disintegration approach used to produce biohydrogen from marine macroalgae biomass (Chaetomorpha antennina) was demonstrated in this study. The suggested research aimed to explain the function of macroalgae disintegration by sonication (DS) and disintegration by a sonic surfactant (DSS) in biohydrogen production. Biosurfactant dosage (3 $μ$ L/g TS), sonic intensity (50%) and disintegration duration (30 min) were found to be an optimum conditions for DSS with respect to dissoluted organics release (DOR). Volatile fatty acids (VFA) generation was higher in DSS (1845 mg/L) than DS (864 mg/L) When DS and DSS were compared, DSS had a substantially higher disintegration efficiency (DE) and biohydrogen yield (26%, 147 mL $H_{2}$ /gCOD) than DS (21.5%, 121 mL $H_{2}$ /gCOD). Net energy (NE) obtained in DSS (0.044 kWh/kg of biomass) was more than the DS (−0.02 kWh/kg of biomass). DSS had a higher energy ratio of 1.8, while DS had a lower energy ratio of 0.7. Overall, DSS was found to be an energetic way to produce biohydrogen.

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通过声波生物表面活性剂分解从大型藻类生产生物氢:一种节能方法

本研究展示了一种利用大型海藻生物质(Chaetomorpha antennina)高效分解生产生物氢的方法。本研究旨在解释大型藻类的超声分解(DS)和超声表面活性剂(DSS)在生物制氢中的作用。生物表面活性剂用量(3 μL/g TS)、声波强度(50%)和崩解时间(30 min)是DSS溶出有机物(DOR)的最佳条件。DSS的挥发性脂肪酸(VFA)生成量(1845 mg/L)高于DS (864 mg/L)。比较DSS和DSS的降解效率(26%，147 mL H2/gCOD)和生物氢产率(21.5%，121 mL H2/gCOD)， DSS的降解效率(26%，147 mL H2/gCOD)显著高于DS (21.5%， 121 mL H2/gCOD)。DSS获得的净能量(0.044 kWh/kg生物质)大于DS (- 0.02 kWh/kg生物质)。DSS的能量比较高，为1.8，而DS的能量比较低，为0.7。总的来说，DSS被认为是一种高效的生产生物氢的方法。

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