Biohydrogen production from seagrass via novel energetically efficient ozone coupled rotor stator homogenization |
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| Affiliation: | 1. Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamilnadu, India;2. Department of Physics, Anna University Regional Campus, Tirunelveli, India;3. Green Processing, Bioremediation and Alternative Energies Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, 200241, PR China;1. Department of Life Sciences, Central University of Tamil Nadu, CUTN Bridge, Neelakudy, Tamil Nadu 610005, India;2. Department of Civil Engineering, Anna University Regional Campus Tirunelveli, India;3. Green Processing, Bioremediation and Alternative Energies Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;1. Department of Life Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur, Tamil Nadu, India;2. Department of Civil Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai 600062, India;3. Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea;4. Institution of Research and Development, Duy Tan University, Da Nang 550000, Vietnam;5. Department of Medicinal and Applied Chemistry, & Research Center for Environmental Medicine, Kaoshiung Medical University, Kaoshiung City-807, Taiwan;6. School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, Republic of Korea;1. Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India;2. Sino-Forest Applied Research Centre for Pearl River Delta Environment, Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region;3. College of Marine and Environmental Science, James Cook University, Townsville, Queensland, Australia;4. Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India;1. Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China;2. School of Environment and Resource, Renmin University of China, Beijing 100872, China;1. Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India;2. Graduate School of Water Resource, Sungkyunkwan University, Suwon, South Korea;1. Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India;2. Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur, India |
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| Abstract: | Biohydrogen production from seagrass (SG) has gained much attention due to their chemical composition (carbohydrate rich biomass). In this study, an attempt was made to enhance the biohydrogen production from sea grass through novel ozone coupled rotor-stator homogenization (ORSH). The efficiency of the homogenization pretreatment was evaluated in terms of seagrass lysis and biohydrogen generation. Initially, sea grass was subjected to rotor-stator homogenization (RSH) to optimize its power input (5.4–19.1 W) and energy spent (0–1285 kJ/kg TS). RSH consumes specific energy of 510 kJ/kg TS to achieve seagrass lysis of 10.45%, whereas ORSH achieved 23.7% of seagrass lysis at less energy (212.4 kJ/kg TS) input. The outcome of the present study reveals ORSH reduced 58.3% of energy input and increased 55.9% of SG lysis when compared with RSH. Hence, a considerable amount of energy could be saved through this combinative pretreatment. Biohydrogenesis was done to evaluate and compare the biohydrogen production potential of ORSH sample. Higher ultimate biohydrogen production was achieved by ORSH (90.7 mL/g COD) than RSH (39.6 mL/g COD). A higher energy ratio of 1.17 could be achieved through ORSH. |
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| Keywords: | Seagrass Ozone coupled rotor-stator homogenization Lysis Specific energy Biohydrogen Energy ratio |
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