Article
Environmental Sciences
R. Serna-Garcia, P. Ruiz-Barriga, G. Noriega-Hevia, J. Serralta, M. Paches, A. Bouzas
Summary: A pilot-scale microalgae and primary sludge anaerobic co-digestion plant was successfully operated for one year in an anaerobic membrane bioreactor, achieving high stability and substrate degradation efficiency. Nutrient-rich effluent streams were obtained, allowing nitrogen and phosphorus recovery. Sanitised and stable compost was successfully produced through composting process.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Nunthaphan Vikromvarasiri, Mitsuhiko Koyama, Winarto Kurniawan, Nipon Pisutpaisal, Kiyohiko Nakasaki
Summary: The study found that intermittent substrate feeding can reduce the effects of intermediate volatile fatty acids, especially propionic acid and improve methane production. The microbial community changes suggested that Trichococcus is the key bacterium in glycerol degradation, while Delftia and Desulfuromonas may compete with methanogens. This study highlights the importance of microbial communities in methane production from glycerol.
Article
Energy & Fuels
Mona Fardinpoor, N. Altinay Perendeci, Vedat Yilmaz, Burcu Ertit Tastan, Fatih Yilmaz
Summary: The study investigated the effects of HC-assisted NaOH pretreatment on methane production from cyanobacteria, specifically Desertifilum tharense isolated from thermal springs in Turkey. The results showed that the pretreatment increased soluble COD by 2-35.3% and methane production from 241.5 to 290.6 mLCH(4) gVS(-1). The application of HC with a low Cv of 0.3 boosted methane production by 20.3% compared to raw D. tharense.
BIOENERGY RESEARCH
(2022)
Article
Energy & Fuels
Larissa Castro Ampese, Miriam Tvrzska de Gouvea, Luz Selene Buller, William Gustavo Sganzerla, Maria Thereza de Moraes Gomes Rosa, Tania Forster-Carneiro
Summary: This study focuses on energy recovery from agro-industrial by-products, using a combined heat and power (CHP) unit powered by a gas turbine fueled with biogas. A thermodynamic model was used for energy assessment. The results showed that pretreatment of macauba shells with subcritical water before anaerobic digestion (AD) could produce electric and thermal energy potentials of 3.4 and 11.2 MW, respectively. Feeding biogas from AD of acai seeds into the CHP would produce 3.4 and 7 MW of electric and thermal energy, respectively.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Review
Environmental Sciences
Ranarup Kundu, Bella Kunnoth, Sridhar Pilli, Venkateswara Rao Polisetty, R. D. Tyagi
Summary: In recent years, anaerobic digestion (AD) has become popular for generating clean energy and managing organic waste. The accumulation of ammonia, acids, and nutrients in the reactor compromises its effectiveness. Biochar (BC) has gained interest in biogas production due to its adaptability. Adding BC to the AD process can mitigate toxic inhibition, reduce methanogenic lag phase, immobilize functional bacteria, and enhance electron transfer. However, more comprehensive knowledge is needed regarding the multifaceted function of BC and its mechanisms in biogas generation in AD.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Binoy Kumar Show, Gaayathri Shivakumaran, Apurba Koley, Anudeb Ghosh, Shibani Chaudhury, Amit Kumar Hazra, S. Balachandran
Summary: This study utilized thermal and chemical pretreatment techniques to enhance biogas production from water hyacinth used as a substrate. Results showed that alkali pretreatment can improve degradability and biogas production of water hyacinth.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Ana Eusebio, Patricia Moniz, Teresa Lopes da Silva, Isabel Paula Marques
Summary: The utilization of wastes for anaerobic digestion can increase methane production and enhance the sustainability of the entire process.
Article
Agricultural Engineering
Huijuan Sun, Xinya Yang, Lei Zhang, Yang Liu
Summary: This study investigated the effect of protein content on calcium phosphate precipitation and methane production in anaerobic digestion. Results showed that the degradation of amino acids led to pH increase and triggered the precipitation of calcium phosphate. Addition of 25% bovine serum albumin to the wastewater created a favorable microbial community, resulting in a methane production rate of 82.7%. The prevalence of Synergistetes and Methanosaeta indicated that methane was mainly produced through acetate utilization.
BIOMASS & BIOENERGY
(2023)
Article
Green & Sustainable Science & Technology
Paula Yumi Takeda, Cristiane Arruda Oliveira, Maria Eduarda Simoes Dias, Carolina Tavares Paula, Andre do Vale Borges, Marcia Helena Rissato Zamariolli Damianovic
Summary: Anaerobic co-digestion using glycerol in the off-season and vinasse in the harvest season can improve the performance and energy recovery of anaerobic systems. It can increase energy generation by approximately 17.5% in the sugarcane biorefinery and ensure system stability.
Article
Green & Sustainable Science & Technology
Samarjeet Singh Siwal, Qibo Zhang, Nishu Devi, Adesh Kumar Saini, Vipin Saini, Bhawna Pareek, Sergejs Gaidukovs, Vijay Kumar Thakur
Summary: The theory of converting biomass waste into energy has attracted attention from academics and professionals, but faces obstacles in its development. Thermochemical methods show promise in reducing greenhouse gases and have a comparative advantage in efficiency and adaptability.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Review
Energy & Fuels
James Darmey, Julius Cudjoe Ahiekpor, Satyanarayana Narra, Osei-Wusu Achaw, Herbert Fiifi Ansah, Wei-Hsin Chen
Summary: Finding sustainable solutions to waste generation in Ghana has become a major focus, with advancements in waste-to-energy processes offering significant potential for producing electricity. This study estimates a significant increase in waste generation in Ghana by 2030, with waste-to-energy technologies potentially contributing to nearly 59% of the country's renewable energy target. Proper development of anaerobic digestion, incineration, and landfill gas recovery technologies could add valuable electrical capacity to Ghana's energy mix.
Article
Engineering, Chemical
Tianyu Gao, Hanmin Zhang, Xiaotong Xu, Fenglin Yang
Summary: This study investigates the rejection of dissolved CH4 by forward osmosis membranes and explores the use of FO-UASB system for CH4 recovery for the first time. Factors such as membrane materials, orientations, and fouling are found to impact the rejection of CH4, H2, and CO2. Results show promising potential for D-CH4 recovery in FO-UASB system, with maximum total CH4 collection rates achieved at different temperatures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Qiuxiang Xu, Tian-Yi Luo, Ruo-Lan Wu, Wei Wei, Jing Sun, Xiaohu Dai, Bing-Jie Ni
Summary: The study demonstrates that rhamnolipid (RL) pretreatment has a promoting effect on methane production in two-phase anaerobic digestion of waste activated sludge, although methane production may be inhibited in the presence of RL during the acidogenic phase. Further analysis shows that the addition of RL can increase methane production throughout the entire two-phase anaerobic digestion process.
Article
Environmental Sciences
Euclides Deago, Marian Ramirez, Kleveer Espino, Daniel Nieto, Maudi Barragan, Max Garcia, Jessica Guevara-Cedeno
Summary: This study investigated the feasibility of anaerobic digestion at ambient temperatures and found that anaerobic digestion within the temperature range of 25-35℃ can optimize energy efficiency and reduce costs.
Review
Chemistry, Physical
Leonor Sillero, William Gustavo Sganzerla, Tania Forster-Carneiro, Rosario Solera, Montserrat Perez
Summary: This bibliometric review evaluated the research progress on hydrogen production from dark fermentation and found that the number of publications in this field has exponentially increased over the past 21 years. The studies mainly focused on operational parameters, process optimization, pretreatment, and microbial community to improve the efficiency of hydrogen production from dark fermentation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Lars Juergensen, Ehiaze Augustine Ehimen, Jens Born, Jens Bo Holm-Nielsen, David Rooney
BIORESOURCE TECHNOLOGY
(2015)
Article
Agricultural Engineering
Lars Juergensen, Ehiaze Augustine Ehimen, Jens Born, Jens Bo Holm-Nielsen
BIORESOURCE TECHNOLOGY
(2015)
Article
Chemistry, Physical
Lars Juergensen, Ehiaze Augustine Ehimen, Jens Born, Jens Bo Holm-Nielsen
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2015)
Article
Agricultural Engineering
Lars Jurgensen, Ehiaze Augustine Ehimen, Jens Born, Jens Bo Holm-Nielsen
BIOMASS & BIOENERGY
(2018)
Article
Agricultural Engineering
A. K. P. Meyer, E. A. Ehimen, J. B. Holm-Nielsen
BIOMASS & BIOENERGY
(2018)
Article
Energy & Fuels
E. A. Ehimen, Z. F. Sun, C. G. Carrington, E. J. Birch, J. J. Eaton-Rye
Article
Agricultural Engineering
Lars Jurgensen, Ehiaze Augustine Ehimen, Jens Born, Jens Bo Holm-Nielsen
BIOMASS & BIOENERGY
(2014)
Article
Energy & Fuels
E. A. Ehimen
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2010)
Article
Energy & Fuels
E. A. Ehimen, Z. F. Sun, C. G. Carrington
Article
Green & Sustainable Science & Technology
E. A. Ehimen, J-B Holm-Nielsen, M. Poulsen, J. E. Boelsmand
Article
Engineering, Environmental
A. K. P. Meyer, E. A. Ehimen, J. B. Holm-Nielsen
RESOURCES CONSERVATION AND RECYCLING
(2014)
Article
Energy & Fuels
Sean O'Connor, Ehiaze Ehimen, Suresh C. Pillai, Gary Lyons, John Bartlett
Article
Biotechnology & Applied Microbiology
Yamini Satyawali, Ehiaze Ehimen, Lieve Cauwenberghs, Miranda Maesen, Pieter Vandezande, Winnie Dejonghe
BIOCHEMICAL ENGINEERING JOURNAL
(2017)
Proceedings Paper
Environmental Sciences
Ehiaze A. Ehimen, Zhifa Sun, Gerry C. Carrington
INNOVATIVE RESEARCHES ON ALGAL BIOMASS
(2012)