Article
Chemistry, Physical
Nusara Sinbuathong, Boonsong Sillapacharoenkul
Summary: This study investigates the pretreatment of sunnhemp to enhance biogas production, showing that pretreated sunnhemp produces 89% more methane yield than untreated sunnhemp. The potential of sunnhemp in producing biogas is high, and using sunnhemp for biogas production is recommended to reduce greenhouse gas emissions and mitigate global warming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Agricultural Engineering
Thi Thu Ha Tran, Phan Khanh Thinh Nguyen
Summary: This study enhanced hydrogen production from water hyacinth by combining ultrasonic-assisted alkaline pretreatment, dark fermentation, and microbial electrolysis cell. The results showed significant improvements in H-2 production with UAA pretreatment, but high concentrations of metabolite products and suspended solid in DF effluent affected the MEC stage's efficiency. The highest H-2 yield was achieved with a WH concentration of 5 g-TS/L.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Boqun Ye, Jiamin Zhang, Yintong Zhou, Mengge Tang, Fengyuan You, Xiaoming Li, Qi Yang, Dongbo Wang, Xuran Liu, Abing Duan, Junwu Liu
Summary: A combination of FNA and Ca(ClO)2 significantly improved sludge fermentation performance, boosting hydrogen generation by 39.97% to 76.20%. Mechanism analysis showed that the combined treatment disrupted sludge structure and cell membrane permeability, releasing more organic substrates and enhancing biodegradability. This study provides a unique strategy for sludge pretreatment, expanding the use of Ca(ClO)2 and FNA in anaerobic fermentation, with implications for sludge disposal and energy recovery.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Octavio Garcia-Depraect, Raquel Lebreroa, Leonardo J. Martinez-Mendoza, Sara Rodriguez-Vega, Rosa Aragao Borner, Tim Borner, Raul Munoz
Summary: This study investigated the effect of alkali-based pretreatment on the methanization of bioplastics. The results showed that alkaline pretreatment can enhance the methanization kinetics of bioplastics. The pretreated PHBs had accelerated methanization rates and comparable or slightly lower methane yields compared to unpretreated PHBs, while the pretreated PLA and PLA/PCL blend showed extensive digestion and higher methane yields.
Article
Biotechnology & Applied Microbiology
Liwen Zhang, Jingjing Yang, Bingdang Wu, Junjun Liu, Xiaoyi Xu, Wei Wu, Jinlong Zhuang, Hanxiang Li, Tianyin Huang
Summary: This study compared the effects of alkali, ultrasound, and the synergistic effect of ultrasound and alkali on microalgae disruption and investigated the synergistic disruption mechanism. Quantitative analysis showed that under optimized conditions, the release of protein by the synergistic method was significantly higher than that of alkali and ultrasound alone. Furthermore, the study found that nutrient release mainly occurred during the microalgal bloom dispersion and individual microalgal micro-fragmentation phases.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Acoustics
Yongheng Zhong, Tao Xu, Shengyang Ji, Xiaodan Wu, Tian Zha, Shimin Li, Peng Zhang, Kaimian Li, Baiyi Lu
Summary: The study found that ultrasonic pretreatment (UPT) is an effective way to remove cyanide from cassava in a short period of time, enhancing the safety of cassava. UPT can improve the processing of cassava by directly eliminating hydrogen cyanide and indirectly degrading cyanogenic glycosides, while also promoting enzymatic hydrolysis.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Environmental Sciences
Yagmur Kabakci, Sadiye Kosar, Ozgur Dogan, Fehmi Gorkem Uctug, Osman Atilla Arikan
Summary: This study investigated the effect of electrohydrolysis pretreatment on municipal solid waste. The results showed that applying electrohydrolysis pretreatment increased methane production and reduced the time required for hydrolysis, suggesting it is a promising method to improve anaerobic digestion efficiency.
ENVIRONMENTAL RESEARCH
(2024)
Article
Chemistry, Physical
A. V. Snehya, M. A. Sundaramahalingam, J. Rajeshbanu, P. Sivashanmugam
Summary: This study investigates the feasibility of using Sargassum tennerimum as a renewable energy source for biohydrogen production. The optimized pretreatment process using sonication and surfactant-aided ultrasonic pretreatment improves the biohydrogen production and energy efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
J. Rajesh Banu, S. Kavitha, Yukesh Kannah Ravi, Vinay Kumar Tyagi, Gopalakrishnan Kumar
Summary: This study aimed to pretreat the waste activated sludge (WAS) by combining sodium citrate with ultrasonic pretreatment in an energy efficient way. The COD solubilization and biomethane yield were significantly increased in the combined treatment compared to individual ultrasonic pretreatment. Future research on the continuous mode anaerobic digestion of the combined treatment is crucial.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Yukesh Kannah Ravi, Weilan Zhang, Yanna Liang
Summary: This study investigated the potential effect of surfactant assisted ultrasonic pretreatment on mixed food waste. Surfactants, including Rhamnolipid, Sodium dodecyl sulfate, Glucopon, and Triton X 100, were evaluated. The results showed that ultrasonication assisted by Triton X 100 at a dose of 0.01 g/g TS for 30 minutes achieved a maximum solubilization of 45.5% and the highest release of soluble COD of 31 g/L. The presence of Triton X 100 also reduced energy demand by 27.5% compared to ultrasonic pretreatment alone. Furthermore, ultrasonication assisted by Triton X 100 significantly increased volatile fatty acid titers by 95% and carbon conversion efficiency by 83% compared to non-pretreated samples after anaerobic digestion. Therefore, sonication with the addition of Triton X 100 was proven to be highly effective in improving digestibility and yield of volatile fatty acid from mixed food waste.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Jinling Cai, Yu Wang, Jie Liu, Xinzhi Zhang, Fengmei Li
Summary: This study uses NaOH/urea and electrohydrolysis pretreatment to enhance the disruption of rice straw and the production of biofuels and chemicals. The pretreatment methods effectively disrupt the lignin structure and increase the cellulose crystallinity of rice straw. The hydrolysis of the pretreated rice straw produces a higher amount of reducing sugars and an increased yield of hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Luz Selene Buller, William Gustavo Sganzerla, Michele Nunes Lima, Kerry E. Muenchow, Michael T. Timko, Tania Forster-Carneiro
Summary: Ultrasonication of brewers' spent grains (BSG) as a pretreatment prior to anaerobic digestion (AD) increased methane production and energy recovery. The US + AD system could generate electrical and thermal energy to meet the energy needs of a brewery while reducing greenhouse gas emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Chemistry, Multidisciplinary
Angelantonio De Benedetto, Agnese De Luca, Paolo Pellegrino, Rosaria Rinaldi, Valeria De Matteis, Mariafrancesca Cascione
Summary: The utilization of hydrogen as a renewable and clean energy carrier poses a significant technological challenge, and the application of magnesium hydride and titanium dioxide in solid-state hydrogen storage can enhance the storage performance of hydrogen.
APPLIED SCIENCES-BASEL
(2023)
Review
Agricultural Engineering
S. Karishma, A. Saravanan, P. Senthil Kumar, Gayathri Rangasamy
Summary: This review focuses on the production of sustainable chemicals and energy from biomass, particularly the production of biohydrogen and the strategies for its pretreatment. By discussing the composition, properties, and pretreatment methods of algae biomass, as well as the factors and enzymes involved in biohydrogen production, this review provides insights into the bottlenecks, challenges, and current trends in improving biohydrogen yield.
BIORESOURCE TECHNOLOGY
(2022)
Article
Chemistry, Physical
Miao Gong, Aixin Feng, Linlu Wang, Mengqi Wang, Jinxiang Hu, Yujie Fan
Summary: Hydrothermal pretreatment and supercritical water gasification were combined to treat dewatered sludge for hydrogen production. Optimal pretreatment conditions were found to transfer 31% of carbon in sludge into liquid products, and the subsequent supercritical water gasification process with catalysts showed improved H-2 selectivity, yield, and energy recovery.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
