Article
Energy & Fuels
Jiamin Zhao, Tingting Hou, Qian Wang, Zhenya Zhang, Zhongfang Lei, Kazuya Shimizu, Wenshan Guo, Huu Hao Ngo
Summary: The study found that biogas recirculation can increase the CH4 production rate, reduce the lag-phase duration, and enhance the CH4 content; the system also improves the dewaterability of digested sludge and induces microbial self-aggregation; energy balance analysis demonstrates an increase in net energy recovery for the system.
Article
Green & Sustainable Science & Technology
Raffaele Morello, Francesco Di Capua, Ludovico Pontoni, Stefano Papirio, Danilo Spasiano, Umberto Fratino, Francesco Pirozzi, Giovanni Esposito
Summary: The study found that applying microaerobic conditions during anaerobic digestion of low-biodegradable sewage sludge can accelerate the hydrolytic stage, increase methane production, and reduce sludge humification degree and volatile fatty acid accumulation.
Article
Environmental Sciences
Pallavi Gahlot, Gowtham Balasundaram, Vinay Kumar Tyagi, A. E. Atabani, Surinder Suthar, A. A. Kazmi, Libor Stepanec, Dagmar Juchelkova, Arvind Kumar
Summary: This study aims to explore the potential of thermal hydrolysis to enhance anaerobic digestion of sewage sludge. Thermal pretreatment can improve the biodegradability of sludge, recover energy and nutrients, and is cost-effective. Additionally, other sludge pretreatment methods and challenges are discussed.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Wai Lin Cheong, Yi Jing Chan, Timm Joyce Tiong, Woon Chan Chong, Worapon Kiatkittipong, Kunlanan Kiatkittipong, Mardawani Mohamad, Hanita Daud, I. Wayan Koko Suryawan, Mega Mutiara Sari, Jun Wei Lim
Summary: The aim of this study was to develop a simulation model of anaerobic co-digestion of food waste and sewage sludge for biogas production. The results showed the optimal parameters for methane yield, COD removal efficiency, and VS removal efficiency. Economic analysis indicated that the study is feasible and economically viable.
Article
Chemistry, Physical
Ikirsha Jokhio, Sundus Saeed Qureshi, Abdul Razzaq Sahito, Mehr-un-Nisa Qureshi, Imtiaz Ahmed Lashari, N. M. Mubarak, Manoj Tripathi, Amal M. Al-Mohaimeed, Mohamed S. Elshikh
Summary: The yield of bio-methane and bio-hydrogen was enhanced by co-digesting banana plant waste (BPW) and sewage sludge (SS). Acclimatisation of the inoculum SS was performed in a continuous stirred tank reactor (CSTR), and its various parameters were analyzed daily. Six different BPW to SS ratios were optimized and incubated in a manual methane potential test setup (MMPTS) for 40 days, with R4 (60% BPW and 40% SS) showing the highest yields. Furthermore, the best achieved ratio of BPW and SS was treated with different doses of NaOH as an alkaline pre-treatment, and the highest bio-methane yield was observed with dose 2 (0.75 mol NaOH) at 620.8 NmL/day. The study demonstrates the promising potential of co-digestion of BPW and SS for enhanced bio-methane and bio-hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Pul-Eip Lee, Won-Bae Lee, Heesung Moon, Junhwa Kwon, Hueon Namkung, Wonseok Lee, Myungsoo Yoo, Dong-jin Lee
Summary: This study confirms that it is feasible to input additional food waste leachate into existing biogasification facilities as an alternative treatment method after the ban on using food waste as wet swine feed following the outbreak of African swine fever. By using weekend input and increased input methods, organic matter decomposition and gas production rates were effectively increased.
Article
Engineering, Environmental
Thobias Pereira Silva, Mauricio Guimaraes de Oliveira, Jose Marcos Marques Mourao, Andre Bezerra dos Santos, Erlon Lopes Pereira
Summary: This study developed a mathematical model based on Monte Carlo simulation to predict the energy potential of biogas produced in an up-flow anaerobic sludge blanket (UASB) reactor treating swine wastewater (SWW). Lab-scale experiments and literature information were used to determine the energy potential of SWW at different organic loading rates (OLRs). The model allowed an estimation close to reality, with reduced errors, making it a relevant tool for entrepreneurship and energy self-sufficiency projects.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Tayane Mesquita, Izabelle Sousa, Maria Fernanda, Andre Pereira Rosa
Summary: This study proposed a method based on energy balance to determine the technical feasibility of biogas use in UASB-based STPs. Out of 1054 STPs in Brazil using UASB reactors, only 11.2% showed technical feasibility for recovering biogas, highlighting the need for further research and implementation of energy self-sufficiency projects.
WATER SCIENCE AND TECHNOLOGY
(2021)
Review
Engineering, Chemical
Israel Bernardo S. Poblete, Ofelia de Queiroz F. Araujo, Jose Luiz de Medeiros
Summary: This study mainly explores the improvement of bioenergy production and economic performance in sewage treatment plants, the use of technology alternatives for energy self-sufficiency, new techniques for sewage sludge management aiming at bioenergy production, and the implementation of sewage treatment with bioenergy production and carbon capture and storage.
Review
Energy & Fuels
V Khanh Nguyen, Dhiraj Kumar Chaudhary, Ram Hari Dahal, N. Hoang Trinh, Jaisoo Kim, S. Woong Chang, Yongseok Hong, Duong Duc La, X. Cuong Nguyen, H. Hao Ngo, W. Jin Chung, D. Duc Nguyen
Summary: Anaerobic digestion (AD) of sewage sludge is an efficient remediation technique, but the presence of complex floc structures and high organic matter content hinder hydrolysis. Pretreatment techniques such as mechanical, chemical, thermal, and biological processes can accelerate hydrolysis and improve AD efficiency.
Article
Environmental Sciences
Xuran Liu, Qian Deng, Mingting Du, Qi Lu, Wenneng Zhou, Dongbo Wang
Summary: The presence of PVC microplastics at environmentally relevant levels does not affect methane production but reduces the toxicity of cadmium. When the concentration of PVC microplastics reaches 30 particles/g TS, methane production recovers to 89.7% in the presence of 5 mg Cd/g TS compared to the control. The adsorption of Cd by PVC microplastics is higher than that of sludge-substrate, reducing the bioavailability of Cd during anaerobic digestion.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Katarzyna Pazdzior, Marlena Dominska, Magdalena Olak-Kucharczyk
Summary: Ozonation treatment can enhance biogas production from surplus activated sludge by increasing production efficiency and methane content. The elemental composition and chemical structure of sludge were not affected by ozonation, but hydrolysis of organic compounds from sludge contributed to the improvement of biogas production.
Review
Environmental Sciences
Qingdan Wu, Dongsheng Zou, Xiaochen Zheng, Fen Liu, Longcheng Li, Zhihua Xiao
Summary: This review summarizes the effects of different antibiotics on anaerobic digestion of sewage sludge, including methane and VFAs production, and their impact on bio-transformation processes and microbial community structure. Research results show that antibiotics at environmentally relevant concentrations mainly reduce biogas production by inhibiting methanogenic processes, while a few antibiotics improve biogas production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Green & Sustainable Science & Technology
Eleni P. Tsiakiri, Aikaterini Mpougali, Ioannis Lemonidis, Christos A. Tzenos, Sotirios D. Kalamaras, Thomas A. Kotsopoulos, Petros Samaras
Summary: This study aims to identify biomethane potential from non-conventional sources in municipal wastewater treatment processes. Samples collected from four sewage treatment plants in Greece showed potential for biogas utilization, with variations in methanogens doubling time based on the source. These wastes can be utilized for energy production, potentially transforming treatment plants into zero energy or even power production processes.
Article
Energy & Fuels
Muhammad Usmaan Bin Khawer, Salman Raza Naqvi, Imtiaz Ali, Muazzam Arshad, Dagmar Juchelkov, Muhammad Waqas Anjum, Muhammad Naqvi
Summary: This work presents a bibliometric and technical study on anaerobic digestion for biogas production from sewage sludge in the past ten years. The study evaluates the authors, countries, institutional collaboration, and keywords as vital parameters in the bibliometric analysis. The technical assessment focuses on highlighting challenges from previous laboratory and pilot-scale studies. The study recommends key considerations and new combination techniques to enhance biohydrogen production and attain optimized process conditions for significant economic impact in technological adaptation and commercialization.
Article
Green & Sustainable Science & Technology
Marina de Sa Moreira, Ivan Felipe Silva dos Santos, Lilian Ferreira Freitas, Flavio Ferreira Freitas, Regina Mambeli Barros, Geraldo Lucio Tiago Filho
Summary: Brazil faces water scarcity issues, particularly in the northeast region. Installing desalination plants using incineration as an energy source is a possible solution, but alternative energy technologies are needed. Energy analysis showed incineration alone cannot provide sufficient energy for desalination, but with municipal consortia and government incentives, costs can be reduced significantly.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2022)
Article
Biotechnology & Applied Microbiology
Maxi Estefany Huaman Cordova, Hellen Luisa de Castro e Silva, Regina Mambeli Barros, Electo Eduardo Silva Lora, Ivan Felipe Silva dos Santos, Joao Victor Rocha de Freitas, Afonso Henriques Moreira Santos, Juliano Romanzini Pedreira, Barbara K. Flauzino
Summary: This study analyzed the effect of magnetite powder on methane production during the anaerobic digestion process of pig slurry, and found that the addition of magnetite significantly increased methane yield. The concentrations of trace elements were consistent with literature data, contributing to the smooth progress of the enzymatic activities of the methanogenic microorganisms.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Flavio Ferreira Freitas, Ulisses Raad Coelho, Sara Talita Sales Silva, Andresa Aparecida Lemes Gomes, Regina Mambeli Barros, Geraldo Lucio Tiago Filho, Electo Eduardo Silva Lora, Ivan Felipe Silva dos Santos
Summary: This study evaluates the feasibility of energy generation through anaerobic processes and finds that replacing grid electricity with biogas energy can reduce greenhouse gas emissions, with activated sludge digestion being the more advantageous option.
WASTE AND BIOMASS VALORIZATION
(2022)
Article
Green & Sustainable Science & Technology
Sara Talita Sales Silva, Regina Mambeli Barros, Ivan Felipe Silva dos Santos, Adriele Maria de Cassia Crispim, Geraldo Lucio Tiago Filho, Electo Eduardo Silva Lora
Summary: This study evaluated the technical and economic feasibility of using biomethane produced from landfills to supply vehicles in southeastern Brazil, showing its potential as an alternative to fossil fuels and its contribution to developing the national biomethane market.
Review
Engineering, Marine
Victorien Gerardo Nago, Ivan Felipe Silva dos Santos, Michael Jourdain Gbedjinou, Johnson Herlich Roslee Mensah, Geraldo Lucio Tiago Filho, Ramiro Gustavo Ramirez Camacho, Regina Mambeli Barros
Summary: This study aims to review studies on hydrokinetic turbine wakes and evaluate the possibility of developing an equation. Literature surveys revealed a scarcity of experimental studies on river hydrokinetic turbine wakes, with significant variations in wake dissipation length data.
Article
Green & Sustainable Science & Technology
Johnson Herlich Roslee Mensah, Ivan Felipe Silva dos Santos, Danielle Rodrigues Raimundo, Maria Claudia Costa de Oliveira Botan, Regina Mambeli Barros, Geraldo Lucio Tiago Filho
Summary: Hydroelectric power plants in Brazil have lost competitiveness to wind and solar power due to a water crisis and depleted reservoirs. However, using Pumped Hydropower Storage (PHS) in combination with solar and wind resources could help recover water levels and improve economic performance. Energy calculations show that PHS could generate 1692 MWh/day of energy, but an additional 2729 MWh/day is needed to store the generated energy. Economic studies indicate viability for PHS scenarios I and III, but scenario II is unviable and controversial.
Article
Thermodynamics
Ana Paula Moni Silva, Regina Mambeli Barros, Electo Eduardo Silva Lora, Carlos Andres Diaz Florez, Ivan Felipe Silva dos Santos, Adriele Maria de Cassia Crispim, Maria Luiza Grillo Reno
Summary: This study characterized sludge digested in UASB reactors and conducted a Life Cycle Assessment (LCA) for different DBS disposal scenarios. The results showed that using UASB reactor disposal system generated higher methane yield and the biogas emissions from drying bed waste had a significant impact on global warming.
Article
Green & Sustainable Science & Technology
Johnson Herlich Roslee Mensah, Ivan Felipe Silva dos Santos, Geraldo Lucio Tiago Filho
Summary: Electricity demand in Benin has been increasing due to population growth, and the government aims to boost renewable energy production to address energy deficits and ensure electricity access for all by 2035. However, despite the country's potential for renewable energy, it can only supply a small fraction of its energy needs, leading to increased electricity imports. Benin has seen a significant increase in solar power generation, but only a limited number of inhabitants have access to electricity. Additionally, Benin is the largest consumer of oil products and an electricity importer within the West African Economic and Monetary Union (WAEMU).
Article
Environmental Sciences
Andresa Aparecida Lemes Gomes, Alana Lopes Junho, Samuel Placidio Galdino da Silva, Estacio Tavares Wanderley Neto, Regina Mambeli Barros, Ivan Felipe Silva dos Santos, Geraldo Lucio Tiago Filho, Jucimar Augusto Pinto
Summary: This study analyzes the technical and economic potential of energy generation using biogas from a landfill in Extrema, Brazil. The results indicate potential for energy generation from the landfill, but the project is not economically viable.
WASTE AND BIOMASS VALORIZATION
(2023)
Article
Green & Sustainable Science & Technology
Hellen Luisa de Castro e Silva, Regina Mambeli Barros, Ivan Felipe Silva dos Santos, Marco Aurelio Kondracki de Alcantara, Electo Eduardo Silva Lora, Helcio Jose Izario Filho, Vanessa Bezerra de Menezes Oliveira, Ana Lucia Fonseca, Dayane de Oliveira, Maria Carolina Triques, Gabriel Caracciolo Koenigkam de Oliveira
Summary: The anaerobic digestion process produces renewable fuel biogas and digestate as a by-product. The use of mineral additives improves biogas production, but their chronic effects on digestates are not well studied. This research analyzes the chronic effects of digestates from swine manure with and without iron ore tailings on the survival and reproduction of Enchytraeus crypticus. The findings suggest that the metals in digestates might have a synergistic effect on the organisms' survival and reproduction, but further analysis is needed to understand the toxicity under different climate conditions.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Energy & Fuels
Augusto Cesar Campos de Souza Machado, Geraldo Lucio Tiago Filho, Thiago Modesto de Abreu, Francesco Facchini, Robson Francisco da Silva, Luiz Fernando Rodrigues Pinto
Summary: This study proposes the use of Balanced Scorecard (BSC) as a strategic evaluation tool for small-scale hydropower plants (SHP) projects. The developed computer program was proven to be effective in analyzing SHP feasibility, regardless of their stage of development and technical and environmental characteristics.
Article
Green & Sustainable Science & Technology
Ulisses Raad da Silva Coelho, Adriele Maria de Cassia Crispim, Maria Auxiliadora de Barros Martins, Regina Mambeli Barros, Maria Luiza Grillo Reno, Geraldo Lucio Tiago Filho, Ivan Felipe Silva Santos
Summary: The elevated presence of organic material in Brazilian urban solid waste, along with mismanagement of its disposal, can aggravate various environmental problems. By using biogas electrical energy from the co-digestion of organic waste and lime mud, this study proposes an alternative that can reduce environmental impacts, provide industry financial resources, and contribute to Brazilian energy grid diversification.