Article
Environmental Sciences
Luxin Yang, Liang Chen, Huan Li, Zhou Deng, Jianguo Liu
Summary: The study found that mesophilic fermentation is beneficial for both the yield and purity of lactic acid production, while thermophilic conditions limit other producers at low pH, resulting in a higher purity of lactic acid. Different microbes have different effects on lactic acid production under different conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
E. Hosseini Koupaie, L. Lin, A. A. Bazyar Lakeh, A. Azizi, B. R. Dhar, H. Hafez, E. Elbeshbishy
Summary: The research found that coupling thermal hydrolysis (TH) and acidogenic fermentation can effectively increase the production of soluble organics in sludge, but it may reduce overall microbial diversity. Pre-hydrolysis achieved higher solubilization and VFAs production, and stimulated the growth of more kinetically efficient fermentative bacteria.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Chemistry, Physical
Tobias Weide, Jens Peitzmeier, Christof Wetter, Marc Wichern, Elmar Bruegging
Summary: In this study, dark fermentation and subsequent mesophilic methanogenesis were conducted at different temperature conditions, showing variations in hydrogen and methane production rates, as well as discovering a hydrogen-producing organism.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Green & Sustainable Science & Technology
Lucas Rodrigues Ramos, Giovanna Lovato, Jose Alberto Domingues Rodrigues, Edson Luiz Silva
Summary: The study found that operating the second-stage methanogenic reactor at mesophilic temperature in two-stage anaerobic digestion system can achieve the best energetic yield, as well as better stability and flexibility.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biotechnology & Applied Microbiology
Marco Chiappero, Franco Berruti, Silvia Fiore
Summary: This study investigated the biomethane potential of wine lees through mesophilic batch tests and evaluated the influence of wood-based biochar addition. The results showed that wine lees are a highly attractive anaerobic digestion substrate, but careful operation is required.
BIOCHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Farokh Laqa Kakar, Hussain Aqeel, Steven N. Liss, Elsayed Elbeshbishy
Summary: Four parameters affecting hydrothermal pretreatment (HTP) of municipal sludge were studied. The results showed that HTP parameters had significant effects on COD solubilization, VFA, and methane yield. HTP was found to increase COD solubilization and VFA production, leading to higher methane yield. The highest methane production yield was observed at high solid content, high pH, low temperature, and short retention time. HTP can be combined with other intensification routes to improve the fermentation and anaerobic digestion processes for waste treatment.
FERMENTATION-BASEL
(2023)
Article
Agricultural Engineering
Hao Jiang, Fan Wu, Yuchang Wang, Lu Feng, Hongjun Zhou, Yeqing Li
Summary: In-situ hydrogen biomethanation is a promising technology for upgrading biogas quality, and investigating its characteristics under different conditions is crucial for its effectiveness. The experiments showed that hydrogenotrophic methanogenesis performed better at thermophilic conditions, with the highest methane content obtained when H2 and CO2 were fed at a 4:1 ratio with Methanothermobacter as the dominant genus.
BIORESOURCE TECHNOLOGY
(2021)
Article
Microbiology
Tianfeng Wang, Jie Wang, Jiajia Pu, Chengxiang Bai, Cheng Peng, Hailong Shi, Ruoyu Wu, Ziying Xu, Yuqian Zhang, Dan Luo, Linhai Yang, Qingfang Zhang
Summary: This study investigated the performance of two-phase sludge anaerobic digestion (T-M and M-T) after a change in digestion temperature and found that the parameters of the two-phase digesters were between the thermophilic and mesophilic control digesters. However, the volatile fatty acid (VFA) levels were higher in the two-phase digesters and the bacterial community composition was more diverse in the M-T digesters. The Methanobacterium, Methanosaeta, and Methanospirillum relative abundance was higher in the M-T digesters while Methanosarcina was higher in the T-M digesters. The ultimate methane yields were higher in the thermophilic control digesters, but the M-T two-phase digesters had higher ultimate methane yields compared to the T-M two-phase digesters. Optimal methane production was achieved with 15% sludge inoculation under mesophilic-thermophilic conditions.
Article
Chemistry, Physical
Melike Kozak, Emre Oguz Koroglu, Kevser Cirik, Zeynep Zaimoglu
Summary: The study evaluated the process and kinetic parameters of ex-situ hydrogenotrophic methanogenesis under mesophilic and thermophilic conditions, showing that the highest methane concentration was obtained under thermophilic conditions, with higher hydrogen utilization efficiency and methane yield.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Environmental Sciences
Rongzhan Liu, Ke Zhang, Xiangyu Chen, Benyi Xiao
Summary: This study investigates the effect of substrate organic composition on the anaerobic co-digestion of food waste and paper waste mixtures. The results show that the organic composition of the substrate has a greater impact on mesophilic co-digestion than thermophilic co-digestion. When the organic composition is carbohydrates:proteins:lipids = 6.8:1.8:1, the two co-digestion processes have similar biogas and methane production. However, when the organic composition is carbohydrates:proteins:lipids = 13.5:2:1, thermophilic co-digestion is more favorable. The characteristics of the thermophilic digestion process are more sensitive to changes in organic composition than the mesophilic digestion process.
Review
Biochemistry & Molecular Biology
Anibal Bher, Pooja C. Mayekar, Rafael A. Auras, Carlos E. Schvezov
Summary: Finding alternatives to reduce plastic pollution is a major challenge in modern life. Biodegradable polymers derived from bio- and fossil-based sources have emerged as one potential solution. The biodegradation process is complex and influenced by various factors, making it important to understand the mechanisms involved. This review provides a comprehensive overview of this process, discussing the impact of enzymes, biofilms, CO2 evolution, and metabolic pathways. It also highlights the need for innovative approaches and interdisciplinary research to minimize plastic persistence in the environment.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Ecology
Hanpeng Liao, Chen Liu, Chaofan Ai, Tian Gao, Qiu-E Yang, Zhen Yu, Shaoming Gao, Shungui Zhou, Ville-Petri Friman
Summary: By studying mesophilic and thermophilic bacteria and their viruses during industrial-scale hyperthermophilic composting (HTC), it was found that the dynamics and activity of virus-bacteria are closely related and play an important role in nutrient cycling. The viruses specific to mesophilic bacteria encode and express several auxiliary metabolic genes (AMGs) linked to carbon cycling and impact nutrient turnover alongside bacteria. The positive correlation between nutrient turnover and virus-host ratio suggests a positive relationship between ecosystem functioning, viral abundances, and viral activity. DNA viruses were found to be the main drivers of nutrient cycling during HTC. These findings suggest that viruses could be used as indicators of microbial ecosystem functioning to optimize productivity of biotechnological and agricultural systems.
Article
Biochemistry & Molecular Biology
Andrej Poljovka, Milos Musil, David Bednar, Katarina Chovanova, Vladena Bauerova-Hlinkova, Jana Bellova, Lenka Kohutova, Peter Barath, Marcel Zamocky
Summary: The study found that the catalase-peroxidases from thermophilic and mesophilic fungi have similar active center structures and peroxidase activity, while the thermophilic variant CthedisKatG showed enhanced manganese peroxidase activity at higher temperatures. Two constructed mutations completely abolished catalatic activity and altered the peroxidase activity, suggesting the potential biotech applications of bifunctional heme enzymes with variable reactivity.
Article
Chemistry, Physical
A. A. Kovalev, E. R. Mikheeva, I. V. Katraeva, D. A. Kovalev, A. M. Kozlov, Yu. Litti
Summary: In this study, the energy recovery from two-stage mesophilic-thermophilic anaerobic digestion of cheese whey was assessed. The maximum energy production rate of 53.2 kJ/(L d) was achieved at a COD level of 13.8 g O2/L, HRT in an acidogenic reactor of 10 h, and HRT in a methanogenic reactor of 48 h. The maximum energy yield of 14.42 kJ/g COD was obtained at a COD level of 9.2 g O2/L, HRT in an acidogenic reactor of 10 h, and HRT in a methanogenic reactor of 72 h.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Katarzyna Bernat, Dorota Kulikowska, Irena Wojnowska-Baryla, Magdalena Zaborowska, Sylwia Pasieczna-Patkowska
Summary: This study determined the detailed kinetics of biogas production from PLA at 58°C and 37°C, revealing lag phases at both temperatures and differences in biogas production rate over time. The findings suggest that PLA digestion in anaerobic conditions is a slower process compared to other biowaste materials, requiring separate digesters in thermophilic conditions and being unacceptable at technical scale in mesophilic conditions.
Article
Environmental Sciences
Ruixin Duan, Guohe Huang, Yongping Li, Xiong Zhou, Jiayan Ren, Chuyin Tian
Summary: Climate change has significant impacts on the Pearl River Basin, with potential increases in temperature, precipitation, and drought conditions projected in the future. The SCP model was used to predict these changes, showing a significant trend of increasing temperature and precipitation, along with more frequent and severe drought events. GCM and RCP interactions play important roles in shaping the future climate scenarios.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Bin Luo, Guohe Huang, Yao Yao, Chunjiang An, Wei Li, Rubing Zheng, Kai Zhao
Summary: The study evaluated the adsorption performance and mechanism of adsorbents with sulfamethoxazole, finding that surface chemistry plays a key role in the adsorption process, and changes in functional groups have a positive impact on material recyclability. Kinetic experiments showed that the adsorption process follows the pseudo-second-kinetic model and intra-particle diffusion model.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Boyue Zheng, Guohe Huang, Lirong Liu, Mengyu Zhai, Yu Li
Summary: This study develops and employs an inter-regional heavy-metal emission cluster model to quantify major heavy metals caused by extra-provincial activities in Guangdong Province, China. Critical provinces responsible for heavy-metal emissions in Guangdong are identified, with extra-province intermediate investment being the largest contributor. The study reveals geographically diverse impacts of heavy-metal emissions from other provinces on Guangdong.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Mengmeng Hu, Shaoqing Chen, Yafei Wang, Beicheng Xia, Shuang Wang, Guohe Huang
Summary: This study used a multi-goal analytical framework to study energy, water, and carbon footprints in Guangdong Province, identifying key sectors and differences. The construction sector was found to be key for energy use, water use, and carbon emissions, while the key sectors for energy, water, and carbon differed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Huawei Li, Yongping Li, Guohe Huang, Jie Sun
Summary: A copula-based bivariate probabilistic framework model was developed to assess the impacts of drought events on crop yield. The model was applied to Xinjiang Province in Northwestern China, revealing the varying sensitivity of wheat, maize, and cotton yield anomalies to different drought time-scales. Results enhance understanding of drought scales' impacts on crops and provide guidance for irrigation management.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Yuanyuan Su, Yongping Li, Yuanrui Liu, Guohe Huang, Qimeng Jia, Yanfeng Li
Summary: Climate change has significant impacts on water resources, with potential changes in precipitation patterns, glacier melt, and runoff quantities in the Amu Darya River basin in Central Asia. Findings indicate that summer water availability and agricultural irrigation could be substantially affected by changes in glacier areas and runoff levels.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Xiajing Lin, Guohe Huang, Joseph M. Piwowar, Xiong Zhou, Yuanyuan Zhai
Summary: The risk of flooding due to infrastructure failures among aging dams in the United States is increasing dramatically, impacting socio-economic and environmental aspects. In the context of climate change scenarios, it is crucial to evaluate the future risks to hydrological infrastructure, especially in areas where human lives are threatened.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Chengyu He, Guohe Huang, Lirong Liu, Yongping Li, Mengyu Zhai, Rong Cao
Summary: Coal-fired power plants in China are major sources of air pollution, emitting PM2.5 which significantly impacts human health and the economy. This study assessed the adverse effects of PM2.5 from coal-fired power plants in China and proposed methods to offset economic losses, finding over 22,000 premature mortality cases and suggesting emission abatement as a solution.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Civil
F. Wang, G. H. Huang, Y. Fan, Y. P. Li
Summary: This study introduced a CPCE model to reveal random propagation and dynamic sensitivity of uncertainty parameters in hydrologic prediction. The CPCE model not only reflects uncertainty propagation in stochastic hydrological simulation, but also has the capability of random forecasting. The maximum soil moisture capacity and the spatial variability in soil moisture capacities have significant impacts on the accuracy of low-flow and high-flow forecasting, respectively.
JOURNAL OF HYDROLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xiujuan Chen, Guohe Huang, Chunjiang An, Renfei Feng, Yinghui Wu, Charley Huang
Summary: In this study, a superwetting and robust PES-PAA-ZrO2 nanofiltration membrane was proposed for efficient removal of PAHs in water. The membrane modification significantly reduced the water contact angle, improved wastewater treatment efficiency, and demonstrated excellent durability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Chuyin Tian, Guohe Huang, Yulei Xie
Summary: This study developed a two-stage fuzzy-stochastic chance-constrained interval (TFCI) regional energy system optimization model to assess the rationality of existing hydropower exploitation plan in Sichuan, China. The results indicated the necessity to limit the expansion of hydropower installed capacity in order to improve the utilization efficiency of all renewable technologies.
Article
Engineering, Environmental
Lijian Sun, Yuncheng Jiang, Qingsheng Guo, Ling Ji, Yulei Xie, Qinhua Qiao, Guohe Huang, Kun Xiao
Summary: This study combines GIS and MCDM to evaluate suitable locations and potentials for large-scale solar PV and CSP plants, using Ningxia, China as a case study. The results suggest the middle area of Ningxia is recommended for solar power plant deployment, with PV technology being more appropriate than CSP technology for the region.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Energy & Fuels
Yanfeng Li, Yongping Li, Guohe Huang, Rubing Zheng
Summary: This study explored the impact of electricity trading on carbon emissions in China using various models and algorithms. The results showed that inter-provincial electricity imports offset carbon emissions, while exports increased carbon emissions. Additionally, the abundant hydropower resources in certain provinces reduced the impact of electricity exports on carbon emissions. Moreover, emission reductions were only observed when electricity trading was generated from renewable sources or if the exporting province had a lower carbon intensity than the importing province at the national level.
Article
Environmental Sciences
Xiaobo Zhai, Yongping Li, Yuan Ma, Guohe Huang, Yanfeng Li
Summary: With population growth, climate volatility, and economic expansion, the management of surface-groundwater faces significant challenges. In this study, a hybrid factorial optimization programming method is developed to effectively reflect multiple uncertainties and quantify the impacts of factors. A model is formulated for the Amu Darya River Basin, where various scenarios are analyzed. The findings highlight the importance of improving water transport efficiency and utilizing groundwater, as well as the significant effects of uncertainties, risk attitudes, and perception on the system's benefits and water-allocation scheme.
Article
Environmental Sciences
Yongfei Luan, Guohe Huang, Guanghui Zheng, Yuee Wang
Summary: This study analyzed the impact of land use on habitat quality and the relationship between human activity intensity and habitat quality in Guiyang. The results showed that human activities have a significant influence on urban habitat quality, and considering the dependencies between land use and human activities is crucial for improving urban land use efficiency and protecting the ecological environment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)