Article
Chemistry, Multidisciplinary
Ali Nawaz, Farheen Aamir, Rong Huang, Ikram ul Haq, Fangyu Wu, Marium Munir, Rida Chaudhary, Ayesha Rafique, Kankan Jiang
Summary: The excessive use of fossil fuels has caused the depletion of natural energy sources, leading to environmental challenges and energy crises. This study assessed the co-production of biohydrogen and biomethane using a less explored halophyte Atriplexcrassifolia. The results showed that effective optimization of the process increased the production of biohydrogen and biomethane, with a 51% increase in biohydrogen and a 24% increase in biomethane production.
FRONTIERS IN CHEMISTRY
(2023)
Article
Environmental Sciences
G. Trancone, D. Spasiano, M. Race, V Luongo, A. Petrella, F. Pirozzi, U. Fratino, A. F. Piccinni
Summary: This study evaluates the efficiency of mesophilic and thermophilic dark fermentation (DF) using glucose as the substrate for the biological treatment of asbestos cement waste (ACW). The results show that both types of fermentation partially convert glucose into organic acids, successfully degrading asbestos fibers and producing hydrogen-rich biogas.
Article
Chemistry, Physical
E. R. Mikheeva, I. Katraeva, D. L. Vorozhtsov, D. A. Kovalev, A. A. Kovalev, V. S. Grigoriev, Yu Litti
Summary: The feasibility of continuous biohydrogen production from industrial wastewater through the dark fermentation process was evaluated in this study. The results showed that producing biohydrogen from confectionery wastewater is promising. The fluidized bed reactor achieved higher hydrogen yield and production rate under certain operating parameters.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Nusara Sinbuathong, Boonsong Sillapacharoenkul
Summary: Biohydrogen can be produced from starch factory wastewater and mixed microorganisms through dark fermentation. The efficiency of hydrogen production is influenced by the initial pH level during fermentation, with alkaline-treated bacteria showing higher yield and production rate. No methane gas was observed in the gas mixture produced throughout the study.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Chaoyang Lu, Guangtao Wang, Quanguo Zhang, Xudong Yang, Jicai Yu, Tao Liu, Francesco Petracchini, Zhiping Zhang, Yong Sun, Danping Jiang, Xiaoyu Liang, Yameng Li, Yang Zhang, Tian Zhang, Huan Zhang
Summary: Biorefinery technology contributes to the realization of the Paris Agreement, China's carbon peak and carbon neutralization. This study investigated the gas, liquid, and kinetic characteristics of four biorefinery methods using corn stover as the raw material. The results provide insights into the efficient utilization of biomass resources and a comprehensive evaluation of biorefinery technology.
Article
Energy & Fuels
Tinku Casper D'Silva, Sameer Ahmad Khan, Subodh Kumar, Dushyant Kumar, Adya Isha, Saptashish Deb, Saurabh Yadav, Biju Illathukandy, Ram Chandra, Virendra Kumar Vijay, Paruchuri M. V. Subbarao, Zoltan Bagi, Kornel L. Kovacs, Liang Yu, Bhushan P. Gandhi, Kirk T. Semple
Summary: Green and clean hydrogen production has gained importance for sustainable renewable energy fuel needs. The dark fermentation (DF) process for biohydrogen production from organic wastes is environmentally friendly, energy-efficient, and cost-effective. This article explores the feasibility of transforming the DF process into a biorefinery system and discusses factors influencing its performance, as well as the need for downstream processes and hydrogen purification techniques. Furthermore, it highlights opportunities, challenges, and research directions for enhancing hydrogen yield and microbial metabolism, and analyzes the commercialization status and policy-level issues from the Indian perspective.
Article
Energy & Fuels
Mahboubeh Namdarimonfared, Hamid Zilouei, Hadiseh Tondro
Summary: This study assessed the feasibility of continuous hydrogen production in an anaerobic packed bed biofilm reactor (APBR) using paper mill effluent (PME) without any pretreatment or modification. The highest hydrogen concentration achieved was 41.5% at a hydraulic retention time (HRT) of 4 hours. The system showed potential for high hydrogen production rates and yields under different HRTs.
Review
Biotechnology & Applied Microbiology
Zhen Li, Jiayu Gu, Jie Ding, Nanqi Ren, Defeng Xing
Summary: Ethanol-type fermentation is an important fermentation type during acidogenesis, with unique characteristics in ethanol-hydrogen co-producing bacteria. Through molecular mechanisms and multi-omics studies, we can gain insights into the metabolic regulation of Ethanoligenens in ethanol-hydrogen co-production. Research also indicates that the autoaggregation of Ethanoligenen facilitates syntrophic interactions with other microorganisms, providing a new approach to solve pH imbalance and improve hydrogen production efficiency.
BIOTECHNOLOGY ADVANCES
(2021)
Article
Chemistry, Physical
Banu Taskan, Emre Oguz Koroglu, Ergin Taskan
Summary: This study found that low inoculum/substrate ratios in the fermentation process caused excessive accumulation of metabolic products and a significant decrease in pH, resulting in decreased hydrogen production efficiency. Cladophora sp. biomass was proven to be an efficient fermentation feedstock for biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Duu-Hwa Lee
Summary: This study evaluates biohydrogen yield efficiency using 26 new DEA models with 55 experiments categorized into DF, PF, and DF-PF technologies, finding that DF-PF has the highest efficiency. Statistical tests show that all biohydrogen inputs and outputs significantly influence yield efficiency. India and Japan are the top two economies benefitting from improved biohydrogen yield efficiency, which can contribute to macroeconomic growth and renewable hydrogen development.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Jiangbo Li, Kai Wang, Shaojie Wang, Haijia Su
Summary: This study developed spatially-ordered layer-by-layer biofilms to enhance the cooperation efficiency between two strains and achieved a significant increase in hydrogen production compared to suspended fermentation and mixed biofilms. By optimizing the mixed ratios of the two strains, the highest hydrogen accumulation was obtained at an inoculation volume ratio of A1:B1 = 1:1. Furthermore, the biofilm system showed stable hydrogen production performance during 5 repeat batches of fermentation.
Article
Chemistry, Physical
Sook Wei Lim, Jobrun Nandong
Summary: This paper presents a new multi-scale kinetic model for predicting biohydrogen production. The study reveals the existence of two prevalent pathways or microbial groups with distinct dynamics in biohydrogen production. Modulating temperature, substrate concentration, and using different types of substrates can control the contribution of different modes in biohydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Peiqi Cui, Shaojie Wang, Haijia Su
Summary: Fe3O4 nanoparticles modified Aspergillus tubingensis mycelial pellets-based anaerobic granular sludge (Fe3O4@AT-AGS) was developed to improve the catalytic efficiency and stability of hydrogen-producing bacteria (HPB). The Fe3O4@AT-AGS protected flora and increased flora diversity and stability. The porous structure promoted the transfer from lactate-producing bacteria (LPB) to HPB. The Fe3O4@AT-AGS significantly enhanced the abundance, dehydrogenase activity, and stability of HPB.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Dong Xiao, Hailun He, Xiaoxin Yan, Norberto Daniel Diaz, Dayong Chen, Jing Ma, Yidong Zhang, Jin Li, Mohamed Keita, Essono Oyono Julien, Xiaotao Yan
Summary: This study examined the impact and mechanisms of antibiotics on biohydrogen production. The experiments showed that most antibiotics inhibited H2 production, while some antibiotics actually promoted it. The main inhibitory mechanisms were board-spectrum inhibition, partial inhibition, and enhanced H2 consumption. The enhancement mechanisms included promoting the growth of H2-producing bacteria, enhancing starch hydrolysis, and inhibiting H2 consumption or acid inhibition. The effect of antibiotics on H2 production was not only dependent on the type but also on the dosage.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Physical
Marina Tomasini, Mariana De Oliveira Faber, Viridiana Santana Ferreira-Leitao
Summary: Sugarcane straw is not effectively utilized in the industry currently, but sugarcane straw hemicellulose hydrolyzate (HH) shows promise as a raw material for H2 and CH4 production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Bruno Garcia Silva, Patricia Perez-Calleja, Eugenio Foresti, Robert Nerenberg
Summary: The foam-aerated biofilm reactor (FABR) is a novel biofilm process that can simultaneously remove carbon and nitrogen from wastewater. This research explored biofilm development within the foam sheet and determined the impact of advective transport on mass transfer and performance. The study found that a dense nitrifying biofilm formed on the aerated side of the foam, while the rest of the foam sheet had a high porosity foam-biofilm layer.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Environmental Sciences
Rafael Frederico Fonseca, Marcelo Zaiat
Summary: Anaerobic digestion is a complex biological process used for decomposing organic matter and producing metabolites and biogas. Monitoring system and process understanding are key to improve the performance and stability. This study developed a low-cost electrochemical sensor for monitoring components in wastewater treatment plants.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Chemical
Oscar Daniel Valmana Garcia, Ana Maria Pereira Neto, Mercia Regina Domingues Moretto, Marcelo Zaiat, Gilberto Martins
Summary: Determining the biochemical methane potential (BMP) is a crucial step in studying anaerobic digestion of sugarcane vinasse. However, the impact of different food-to-microorganism ratio on BMP estimation has not been extensively explored. This research optimized the food-to-microorganism ratio to maximize the BMP of mixed origin vinasse and compared it to literature. By increasing vinasse concentration, the BMP of the vinasse was maximized, with a methane conversion efficiency of 95 +/- 2.55% compared to the theoretical BMP.
BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Jessica Costa Lopes, Bruno Garcia Silva, Maria Eduarda Simoes Dias, Rodrigo Braz Carneiro, Marcia Helena Rissato Zamariolli Damianovic, Eugenio Foresti
Summary: The removal of nutrients from sewage is still a challenge in conventional treatment plants. This study explored the nitrogen and phosphorus removal from anaerobic pre-treated sewage using a structured fixed bed reactor. It was found that high removal efficiencies could be achieved under the appropriate operating conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Lucas T. Fuess, Adriana F. M. Braga, Felipe Eng, Gustavo B. Gregoracci, Flavia T. Saia, Marcelo Zaiat, Piet N. L. Lens
Summary: Removing sulfate prior to methanogenesis and maintaining year-round operation are the main challenges for highly efficient bioenergy recovery from sugarcane vinasse. The study assessed the establishment and optimization of sulfidogenesis during vinasse fermentation at different temperature levels and the impact of replacing vinasse by molasses. The results showed that sulfidogenesis was not efficiently established at 30 degrees C, but successful sulfate removal was achieved at 55 degrees C. Replacing vinasse by molasses negatively impacted sulfate-reducing bacteria but they were resilient to severe acidic and thermophilic conditions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
J. M. S. Oliveira, J. S. Poulsen, E. Foresti, J. L. Nielsen
Summary: A multiple stage anaerobic system was proven effective for reductive decolorization of azo dyes in the presence of sulfate. The system achieved significant bulk color removal and organic matter and sulfate reduction in separate reactors. By utilizing amplicon sequencing and correlation analysis, the microbial communities and pathways involved in azo dye removal were identified, with reductive decolorization being mainly associated with hydrogen-producing pathways and the involvement of an azoreductase from Lactococcus lactis. The findings enhance our understanding of the role of different microbial communities in anaerobic treatment of azo dyes and can aid in the design of improved solutions for textile effluent treatment.
Article
Environmental Sciences
J. M. S. Oliveira, C. A. Sabatini, A. J. Santos-Neto, E. Foresti
Summary: Most studies on the degradation of textile azo dyes focus on color as a parameter, but it is susceptible to interference. This study proposes a method for determining a sulfonated azo dye in wastewater using solid-phase extraction and liquid chromatography - electrospray ionization tandem mass spectrometry. The results showed that the dye undergoes hydrolysis and has structural changes in aqueous solution, but its dyeing capacity remains unchanged. Color remains a reliable parameter for monitoring unstable azo compounds in aqueous solution, but a more robust method is needed for the speciation of the dye's hydrolyzed products.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Rafaely X. de S. Furtado, Carolina A. Sabatini, Isabel K. Sakamoto, Marcelo Zaiat, Eduardo B. Azevedo
Summary: Perfluorooctane sulfonic acid (PFOS) is widely used in the textile industry as a surfactant and can be found in various products. This study investigated the degradation of PFOS in anaerobic conditions using simulated domestic sewage. After 10 days, a 24% degradation of PFOS was achieved. Biodegradation products were identified, including a new compound: C4F9CHO (2,2,3,3,4,4,5,5,5-nonafluoropentanal). The biodegradation products showed increased lipophilicities and ecotoxicities compared to PFOS.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Bruno W. Picao, Daniele O. Goncalves, Renata M. M. G. P. Ribeiro, Mateus N. Esperanca, Guilherme Peixoto, Marcel O. Cerri
Summary: This study evaluated the effects of adding helical flow promoters on oxygen transfer and gas holdup in an airlift bioreactor. The results showed that the inclusion of helical flow promoters improved oxygen transfer and gas holdup performance, leading to enhanced bioprocess optimization.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2023)
Article
Biotechnology & Applied Microbiology
Ana Paula Trevisan, Lucas Tadeu Fuess, Marcelo Zaiat, Eduardo Borges Lied, Simone Damasceno Gomes
Summary: This study simulated the application of continuous multiple tube reactor (CMTR) in the production of biohydrogen from sucrose-rich wastewater. The study assessed the operational limits of the reactor and found that the biohydrogen production was maximized under moderate wastewater concentration and optimal organic loading rate (OLR).
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Cassamo U. Mussagy, Amanda dos Santos, Gabriely F. G. Militao, Jessica Carolina Silva de Oliveira, Gisela de A. Umbuzeiro, Guilherme Peixoto, Adalberto Pessoa Jr, Valeria C. Santos-Ebinuma
Summary: This study uses the yeast Phaffia rhodozyma as biomass feedstock to produce astaxanthin and generate biogas from waste biomass, aiming to achieve sustainability and minimize the use of synthetic counterparts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Thiago H. G. da Silva, Rafaely X. S. Furtado, Marcelo Zaiat, Eduardo B. Azevedo
Summary: This study assessed the feasibility of coupling the heterogeneous Fenton process to biologically treated domestic sewage for the removal of diclofenac, ranitidine, and simvastatin. The results showed that the purified natural zeolite impregnated with iron was an effective catalyst for the process. However, the process had disadvantages such as high hydrogen peroxide consumption and size exclusion effects.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
E. G. F. Rezende, G. H. D. Oliveira, P. T. Couto, M. Zaiat, R. Ribeiro
Summary: Models were developed to represent the selection of PHA-producing microorganisms in a sequencing batch reactor (SBR) and the accumulation of PHA in a fed-batch reactor from sugarcane vinasse. Sensitivity analysis and optimization were conducted to understand the influence of parameters and operational conditions on PHA production. The results showed that higher CODt/Nitrogen ratios in the SBR favored the growth response rather than storage, shedding light on the impact of CODt/Nitrogen ratio on PHA accumulation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Biotechnology & Applied Microbiology
Maria Paula Giulianetti de Almeida, Gustavo Mockaitis, David G. Weissbrodt
Summary: Whey, a massive dairy residue, is widely used in various industries but also poses environmental challenges. We propose a closed-loop biorefinery strategy to mitigate its impacts and valorize whey resources. Technologies such as anaerobic digestion and photobioprocesses can be combined to produce biogas, biomass, and value-added products from whey.
FERMENTATION-BASEL
(2023)
Article
Engineering, Environmental
Lucas T. Fuess, Adriana F. M. Braga, Marcelo Zaiat, Piet N. L. Lens
Summary: This study investigated the use of sulfate-free vinasse and molasses as substrates to obtain enhanced year-round methane production in sugarcane biorefineries. The results showed that pre-fermenting vinasse and molasses was imperative for maintaining efficient organic matter conversion into methane. This strategy provides an efficient approach to achieve year-round high-rate biogas production in sugarcane vinasse.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.
