Conjoint effect of microwave irradiation and metal nanoparticles on biogas augmentation from anaerobic digestion of green algae |
| |
| Affiliation: | 1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, PR China;2. Department of Mechanical Engineering, Faculty of Engineering, Islamic University of Madinah, Madinah, P. O. Box 170, Saudi Arabia;3. Department of Engineering Sciences, PN Engineering College, National University of Sciences and Technology, Karachi 75350, Pakistan;4. Massachusetts Institute of Technology Portugal Program, Faculty of Engineering, University of Porto (FEUP), Portugal;1. Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan;2. Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan;3. College of Technology and Engineering, National Taiwan Normal University, Taipei 10610, Taiwan;1. Department of Biosystems Engineering, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran;2. Department of Environmental Science, Faculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, Iran;1. National Institute of Laser Enhanced Sciences (NILES), Cairo University, 12613 Giza, Egypt;2. Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt;3. Department of Agricultural Engineering, Faculty of Agriculture, Suez-Canal University, Egypt;4. Physical Chemistry Department, Faculty of Chemistry, and NANOMAG Laboratory, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain |
| |
| Abstract: | Pretreatment of biomass is a commonly applied technique for improving its biodegradability; however, such methods are energy intensive, which affects the overall efficiency. This study aims to provide an energy efficient solution by combining microwave (MW) pretreatment of algal biomass (Enteromorpha) and metal nanoparticles (NPs). The MW pretreatment of the biomass was in the form of a slurry (liquid:solid 20:1), while pretreatment time and MW pretreatment power were 6min and 600 W, respectively. Nickel (Ni) and Cobalt (Co) NPs with a concentration of 1 mg/L were used. Batch-wise anaerobic digestion was carried out for a period of 264 h. The results showed that MW pretreatment initiates early hydrolysis of green algae thus reducing lag time. NPs had a positive influence in biogas production at the later stages of anaerobic digestion. The highest total biogas production of 53.60ml/gTS was attained by Co NPs + MW pretreatment whereas maximum biohydrogen of 59.52% (v/v) was produced by Ni NPs + MW pretreatment group. Energy analysis showed that combined utilization of MW pretreatment and metal NPs produced added energy while consuming less input energy than MW pretreatment alone. The kinetic parameters were calculated by using modified Gompertz and Logistic function model for each experimental case. |
| |
| Keywords: | Anaerobic digestion Biogas Green algae Kinetic models MW pretreatment Nanoparticles (NPs) |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
