Article
Energy & Fuels
Andreia D. Santos, Joao R. Silva, Luis M. Castro, Rosa M. Quinta-Ferreira
Summary: This study evaluates the methane production potential of pig slurry anaerobic digestion using two different substrate to inoculum ratios (SIR 0.65 and 1) and compares it with theoretical predictions. The results show that a higher SIR of 1 produced more biogas with higher methane content compared to a lower SIR of 0.65, with an SMP of 0.568 NL CH4/g VS and an average methane content of 83% achieved in the experiment. The estimated value presented a deviation of just 2.96% during the assay with a SIR of 1.
Article
Engineering, Chemical
Tianwei Hao, Zheng Liu, Muxiang Liang, Xiaoming Liu, Jing Chen, Xiaohui Wu, Sunita Varjani, Feixiang Zan
Summary: This study demonstrates the significant impact of sulfite pretreatment on the solubilization and substrate release of PS, as well as the reduction of methane production from PS. Additionally, sulfite pretreatment affects the functional groups and degradation extent of PS.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
W. O. Meneses-Quelal, B. Velazquez-Marti, J. Gaibor-Chavez, Z. Nino-Ruiz
Summary: This study evaluated the anaerobic digestion of agricultural waste, manure, and slaughterhouse residues from species typical of the Andes region, such as llama, vicuna, and guinea pig; quinoa, amaranth, and wheat straw. The highest methane production rates were achieved for flame manure and quinoa straw at an RSI of 1:2, with significant increases compared to an RSI of 1:1. The modified Gompertz model proved to be the best fit for performance analysis, with a constant difference of 7.06% between experimental and predicted values.
Article
Green & Sustainable Science & Technology
Georgios Manthos, Margarita Dareioti, Dimitris Zagklis, Michael Kornaros
Summary: This study aimed to mathematically model anaerobic digestion in batch systems to analyze the potential synergies between complementary substrates. The results showed that a mixture ratio of 70:30 for olive mill wastewater and liquid cow manure achieved a maximum net profit of 16 euro/m3reactor/d, ensuring the sustainability of the process.
Article
Agricultural Engineering
Mirco Garuti, Erika Sinisgalli, Mariangela Soldano, Antonia Jimenez Rodriguez, Fernando G. Fermoso
Summary: Agricultural biogas plants should aim for high biological efficiency by quickly converting organic feedstocks to minimize residual methane potential. Optimal biochemical conditions can enhance microorganism activity and improve process performance.
BIOMASS & BIOENERGY
(2023)
Article
Energy & Fuels
M. J. Fernandez-Rodriguez, J. M. Mancilla-Leyton, D. de la Lama-Calvente, R. Borja
Summary: This research evaluated the anaerobic digestion of llama and dromedary dungs in batch mode at mesophilic temperature. The study found that trampled llama dung had a higher methane yield compared to raw llama and dromedary dungs. Trampled llama dung was determined to be the best substrate for methane production due to its high volatile solids content, nitrogen content, and appropriate C/N ratio. The experimental data aligns with both first-order kinetic and transference function mathematical models.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Green & Sustainable Science & Technology
Tiago Miguel Cabrita, Maria Teresa Santos
Summary: The anaerobic digestion process is widely used for organic waste treatment, with Biochemical Methane Potential assays being the most commonly applied method for evaluating suitable substrates. This paper provides a review of anaerobic feedstocks, BMP methodologies, experimental conditions, and results from 2008 to 2023. The study found a wide range of anaerobic feedstocks, characterized by different parameters such as TS, VS, COD, and pH. Despite efforts to standardize the BMP method, there are still gaps in experimental conditions and determination of specific methane production, posing challenges for study comparisons.
Article
Agricultural Engineering
Haiquan Dong, Liangchen Yue, Jun Cheng, Rongxin Xia, Junhu Zhou
Summary: Microbial electro-chemical degradation was proposed to enhance methane production from lipids in anaerobic digestion. Applying a voltage strengthened the beta-oxidation of lipids, promoting electron transfer and methane yield. The overall energy conversion efficiency in methane production increased due to microbial electrochemical degradation of lipids.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Gloria Amo-Duodu, Emmanuel Kweinor Tetteh, Sudesh Rathilal, Martha Noro Chollom
Summary: This study explored the impact of different magnetic nanomaterials on the anaerobic digestion of wastewater for biogas production. The results showed that reactors charged with TiO2 photocatalyst composites were more effective and the reactor with magnetite produced the highest biogas production. The findings have important implications for the utilization of wastewater as a renewable energy source.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Environmental Sciences
Naassom Wagner Sales Morais, Milena Maciel Holanda Coelho, Amanda de Sousa e Silva, Francisco Schiavon Souza Silva, Tasso Jorge Tavares Ferreira, Erlon Lopes Pereira, Andre Bezerra dos Santos
Summary: This study aimed to evaluate the methane production potential of six agro-industrial wastewaters and determine the most suitable kinetic models for simulating their methane production. The results showed that residual glycerol had the highest methanization potential, and exponential kinetic models were more efficient in describing methane production of more soluble substrates.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Priscila Liane Biesdorf Borth, Jessica Klarosk Helenas Perin, Arthur Ribeiro Torrecilhas, Nicole Caldas Pan, Emilia Kiyomi Kuroda, Fernando Fernandes
Summary: This study evaluated the influence of adding garden waste on the performance of food waste anaerobic digestion. The results showed that in specific conditions, adding garden waste did not positively impact methane production.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2021)
Article
Biotechnology & Applied Microbiology
Buta Singh, Kornel L. Kovacs, Zoltan Bagi, Jozsef Nyari, Gabor L. Szepesi, Mate Petrik, Zoltan Simenfalvi, Zoltan Szamosi
Summary: Appropriate mixing system and effective management are crucial for the sensitive microbial community in an anaerobic digester. Higher mixing intensity leads to increased biogas production and reduced dead zones, which improves mixing efficiency significantly. Optimization of digester and impeller geometry is important for scaling up digesters and optimizing mixing in full-scale operations.
FERMENTATION-BASEL
(2021)
Article
Energy & Fuels
L. A. Romero De Leon, P. Quinto Diez, L. R. Tovar Galvez, L. Alvarado Perea, C. A. Lopez Barragan, C. A. Garcia Rodriguez, A. Reyes Leon
Summary: This study found that the biochemical methane potential of water hyacinth and municipal solid waste in Mexico City could be effectively managed through anaerobic digestion and anaerobic codigestion processes. The substrate-to-inoculum ratio played a significant role in volatile solids degradation. Anaerobic digestion of municipal solid waste with a S:I ratio of 1:1 produced more methane than anaerobic codigestion, but the difference was not statistically significant. Overall, the research highlighted the potential of using anaerobic digestion for renewable energy production and addressing the issues associated with water hyacinth, municipal solid waste, and leachate.
Review
Chemistry, Physical
Leonor Sillero, Rosario Solera, Montserrat Perez
Summary: This study aims to investigate the methane generation potential of different samples from the dark acid fermentation of sewage sludge and the effect of high ammonia concentrations in poultry manure when used as a co-substrate. Results show that the addition of poultry manure improves methane production and the mixture of sewage sludge, wine vinasse, and poultry manure has the highest purification percentages and methane yield. The presence of poultry manure also increases microbial concentration during the BMP test.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Agricultural Engineering
Gaixiu Yang, Ying Li, Feng Zhen, Yonghua Xu, Jinming Liu, Nan Li, Yong Sun, Lina Luo, Ming Wang, Lingling Zhang
Summary: The study found that the regression model based on characteristic wavelengths selected by NIRS showed superior performance in predicting biochemical methane potential. The predicted accuracy of the NIRS model was very high, meeting the requirements for rapid prediction of BMP for co-AD feedstocks in practical biogas engineering.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)