Article
Agricultural Engineering
Zhetai Hu, Weiwei Li, Haoran Duan, Xin Huang, Jia Meng, Liangzhen Yang, Min Zheng
Summary: This study proposed an integrated approach to efficiently recover phosphorus (P) as vivianite from waste activated sludge (WAS) and simultaneously enhance sludge dewaterability. Acidification and Fe3+ reduction were conducted to convert Fe and P from solid phase to liquid phase. Acid-elutriation technology was then introduced to enhance liquor-solid separation. Finally, vivianite was obtained via sludge eluate neutralization. The enhanced sludge dewaterability not only increases the recovery efficiency of Fe and P but also decreases the cost of sludge disposal.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lei Jiang, Qiushi Shen, Qian Zhang, Yanting Zeng, Wenwen Wang, Yuanxiang Mao, Fangying Ji
Summary: The effects of MW treatment, combined MW-alkali (MA) treatment, and combined MA-water elutriation (MAW) treatment on sludge solubilization were studied, aiming at the recovery of carbon sources and nutrients. Various parameters such as MW power input, heating time, NaOH dosages, alkali treatment durations, and sludge solids concentration were explored, with optimal values achieved for each treatment. MW treatment disrupted sludge flocs and biomass cell membranes, while MA treatment resulted in a reduction of VSS/TSS ratio. Water elutriation after MA treatment further enhanced the release of nutrients from the sludge. Factors like MW power inputs, heating duration, alkali treatment time, and NaOH dosages had significant effects on sludge solubilization.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Heliang Pang, Yumeng Xu, Yuyao Zhang, Qiao Wei, Dong Xu, Jinxuan Liu, Jinsuo Lu
Summary: This study investigated the effects of cation exchange and lysozyme on carbon source migration and proposed a new pattern for carbon source release. After short-term anaerobic fermentation, a satisfactory carbon recovery rate was achieved. The synergistic treatment of CE and lysozyme greatly improved the speed and performance of carbon source migration and recovery.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Tao Ya, Zhimin Wang, Junyu Liu, Minglu Zhang, Lili Zhang, Xiaojing Liu, Yuan Li, Xiaohui Wang
Summary: Biological treatment processes play a crucial role in sewage purification, and microbial interactions have a significant impact on treatment performance. This study investigated the microbial interactions in an activated sludge system under elevated salinity using association network analysis. The results showed that higher salinity led to lower microbial diversity and more competitive overall networks, resulting in reduced treatment process efficiency. The subnetworks of major phyla and functional bacteria differed significantly under elevated salinity, with Nitrosomonas making a greater contribution to nitrification and denitrifiers establishing more cooperative relationships to resist salinity stress. Keystone species crucial for process stability were found to be dynamic and less abundant under salinity disturbance. This study deepened our understanding of microbial interactions in activated sludge systems under elevated salinity.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Yabing Xiao, Yao Shen, Bin Ji
Summary: This research focused on cultivating MBGS from activated sludge by inoculation. The results showed that inoculation helped in the successful formation of MBGS within a short period of time, and achieved stable removal of organics, ammonia, and phosphorus. Functional microbial communities, including phosphorus accumulating organisms, were enhanced by the inoculation.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Zhixian Ding, Weiyan Chen, Jinyu Hou, Qingling Wang, Wuxing Liu, Peter Christie, Yongming Luo
Summary: Hydrogen peroxide oxidation has poor removal efficiency of total petroleum hydrocarbons in oilfield sludges, but combining it with surfactants significantly increases removal efficiency, especially for long-chain hydrocarbons. Adding organic manure can quickly restore microbial activity in treated sludges and increase the abundance of petroleum-degrading bacteria.
Article
Green & Sustainable Science & Technology
Yingying Yang, Xueyang Hu, Xinyu Zhang, Xiurong Chen, Xiao Wei, Zhichong Chen, Hao Gu, Shanshan Linghu, Yuqing Gao
Summary: This study investigates the degradation of resorcinol in domestic coal gas wastewater by aerobic activated sludge. The results show that the effluent resorcinol concentration and chemical oxygen demand concentration tend to increase and then decrease with increasing influent resorcinol concentration. The study also identifies the dominant bacterial population involved in the degradation process.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Microbiology
Phumudzo Budeli, Mutshiene Deogratias Ekwanzala, Maggy Ndombo Benteke Momba
Summary: This study investigated the impact of synthetic estrogen EE2 on the bacterial community in activated sludge microbiome. The results showed changes in the bacterial community and reduction in microbial counts due to the presence of EE2. Furthermore, it was found that EE2 may have hormone-like effects even at lower doses.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Lisha Yang, Long Chen, Kai Chen, Hongtao Zhu
Summary: This study investigated the effects of coupling microbial electrolysis cell (MEC) with anaerobic digestion (AD) on methane yield. The results showed that the methane yield was significantly improved through enhanced hydrolysis and acidogenesis, as well as enrichment of hydrogenotrophic methanogens. Carbon felt (CF) as an electrode exhibited the best performance, leading to a higher net energy output. The relative abundance of hydrogenotrophic methanogen in MEC-AD with CF as electrodes increased, contributing to the improved methane yield.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yanqiong Wang, Hongwu Wang, Hongbin Chen
Summary: This study investigated the impact of 50% and 100% edible oil on activated sludge in comparison to glucose. Results showed that both concentrations of edible oil influenced the system's performance, with 100% oil having a more significant negative effect. Edible oil inhibited sludge settling performance through promoting the formation of floating particles and enrichment of filamentous bacteria.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Marie Riisgaard-Jensen, Giulia Dottorini, Marta Nierychlo, Per Halkjaer Nielsen
Summary: The immigration of bacteria in influent wastewater has a strong impact on the microbial community of activated sludge in wastewater treatment plants. The use of primary settlers can selectively increase or reduce the abundance of certain bacteria. The process of primary settling changes the microbial community of influent wastewater and can be a candidate for upstream control to optimize the assembly of microbial communities in activated sludge.
Article
Engineering, Environmental
Pei Gao, Xujia Ming, Xudong Wang, Zhixiang Chen, Yao Liu, Xianguo Li, Dahai Zhang
Summary: This study confirmed the significant role of ozone in anaerobic fermentation gas production and its ability to effectively degrade activated sludge. The mixing of primary sludge with excess sludge exhibited synergistic effects, contributing to the anaerobic fermentation of excess sludge.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Feixiang Zan, Hao Huang, Gang Guo, Guanghao Chen
Summary: The study found that sulfite pretreatments can enhance the biodegradability of sludge mixtures and improve substrate release. Additionally, methane production from the sludge mixture increased, while the volume of digested sludge decreased after sulfite pretreatment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Kai Wan, Ye Yu, Jinggang Hu, Xuemei Liu, Xiangyi Deng, Junxia Yu, Ruan Chi, Chunqiao Xiao
Summary: This study investigated the recovery process of a reactor after being inhibited by a high nitrogen load. The results showed that after 75 days of recovery, the nitrogen removal rate and stoichiometric ratio of the reactor were restored to pre-inhibition levels. The surface structure of the granular sludge changed to a broccoli-like structure, and there was an increase in the Ca and P contents of the granules. Moreover, the abundance of the anammox bacterium Candidatus brocadia also increased, and it showed a positive correlation with specific microbial species.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Xiaoling Zhao, Min Liu, Shipeng Yang, Hui Gong, Jinyuan Ma, Caibin Li, Kaijun Wang
Summary: Temperature Staging and Biological Phasing (TSBP) is an improved anaerobic digestion technology for treating waste activated sludge. The stable operation of TSBP system showed significant biogas production and organic matter degradation. Microbial community analysis revealed the dominance of Proteobacteria and Firmicutes, and aceticlastic methanogenesis was identified as the major pathway for methane production in this system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Gen Wang, Yue Zhang, Lei Ge, Zhuoyue Liu, Xiurong Zhu, Shengjiong Yang, Pengkang Jin, Xiangkang Zeng, Xiwang Zhang
Summary: This study investigates the degradation of organic pollutants in groundwater using CuO nanoparticles supported on mineral substrates to generate singlet oxygen (1O2) under peroxymonosulfate activation. The results show that the supported CuO NPs/PMS system efficiently removes various organic pollutants under wide operation conditions, with long-term durability and low metal ion leaching.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Xuan Shi, Bo Ren, Xin Jin, Xiaochang C. Wang, Pengkang Jin
Summary: The discharge of personal care products (PPCPs) to sewer systems has increased due to urban expansion, while the transformation of PPCPs in sewer systems and their potential threats to receiving water environments have been rarely explored. This study investigated the effect of PPCPs transformation in a pilot sewer system by continuously adding six PPCPs over a 90-day experimental period. The results showed that under PPCPs stress conditions, the biological metabolism of carbon, nitrogen, and phosphorous pollutants was restricted. Genomic detection confirmed that the diversity of microflora in sewer sediment significantly decreased with PPCPs transformation, and the relative abundance of dominant phylum species increased. In addition, the study found that two types of antibiotics were the main inducements for metabolic dysfunction in sewer systems, leading to the increase of functional genes associated with human diseases and the formation of more harmful metabolites. This investigation provides insights into the metabolic hazards of PPCPs bioconversions in sewers and highlights the importance of addressing PPCPs emission to sewers.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Yi Rong, Yang Zhang, Zenghui Sun, Zhe Liu, Xin Jin, Pengkang Jin
Summary: Rural wastewater treatment is an important issue in China. This study investigated the performance of rural wastewater treatment plants in Shaanxi and found that the intermittent flow of rural sewage results in poor pollutant removal. The study also developed an optimal operation strategy using an A2/O bioreactor to improve the efficiency and economic benefits of rural wastewater treatment plants.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Gaoyuan Shang, Kai Cui, Wenfang Cai, Xiaona Hu, Pengkang Jin, Kun Guo
Summary: A novel 20 L electrochemical continuous stirred-tank reactor (E-CSTR) was reported for methane production from CO2. The reactor showed high methane production rates, coulombic efficiency, and excellent robustness, indicating great potential for scaling up and practical application.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Xuan Shi, Wei Liu, Dongwei Xu, Yuxuan Hou, Bo Ren, Xin Jin, Xiaochang C. Wang, Pengkang Jin
Summary: In this study, 18 high-quality draft genomes from sewer biofilms were analyzed, revealing the presence of genes involved in both methane and sulfide production. These genomes formed symbiotic systems that promote the generation of methane and sulfide, as well as another biological system with multiple functional aggregates. These findings improve the understanding of toxic gas emissions in sewers and provide a theoretical foundation for gas suppression studies.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Xue Bai, Juan Shi, Lu Xu, Xin Jin, Xuan Shi, Pengkang Jin
Summary: A ternary catalyst, Fe-g-C3N4/rGO, is used to activate peroxymonosulfate (PMS) for effective contaminant mineralization. The catalyst exhibits high efficiency, wide pH adaptability, and stability, making it a promising approach for practical wastewater purification.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Chemical
Yao Li, Haoran Xin, Yukai Zong, Xin Jin, Yadong Wang, Yabo Shang, Pengkang Jin, Xiaochang Wang
Summary: A novel nucleation-induced crystallization process (NICP) is proposed for the simultaneous removal of organics and hardness ions in industrial effluents. The pre-dosed seed provides reaction sites for the lattice ions, inducing Ca2+/Mg2+ ions to adhere to the seed surface. Organics attach to the seed surface through coprecipitation and surface complexation. Hydraulic regulation accelerates crystal growth and increases nucleating pellet size. The multi-stage NICP improves removal efficiency, with the 3rd-stage achieving 65.63% removal rate for total hardness and 42.95% removal rate for chemical oxygen demand (COD).
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Engineering, Environmental
Yaohuan Gao, Xuan Shi, Xin Jin, Xiaochang C. Wang, Pengkang Jin
Summary: In-sewer physio-biochemical processes cause variations in wastewater quality during conveyance, affecting the influent to wastewater treatment plant and microbial community in biological treatment units. Contaminants in sewer deposits can be released during combined sewer overflows, posing challenges to treatment facilities and urban water quality. Studies have shown that biochemical reactions are organized in deposits and sewage, following redox potential and degradation sequence. Future research should focus on topics such as FOG deposits, transport of contaminants in sewer atmosphere, nonconventional contaminants, and wastewater quality variation during biofilm rehabilitation.
Article
Engineering, Environmental
Xin Jin, Mengwen Liu, Yukai Zong, Shiyi Hu, Yao Li, Lu Xu, Xue Bai, Xuan Shi, Pengkang Jin, Jina Song, Xiaochang C. Wang
Summary: The pre-ozonation coagulation process has a limited range of ozone dosages for effective removal of dissolved organic matter (DOC) due to the risk of over-oxidation. In contrast, the hybrid ozonation-coagulation (HOC) process not only inhibits over-oxidation, but also improves DOC removal efficiency at a wider range of ozone dosages and different initial pH conditions. The HOC process also outperforms pre-ozonation coagulation in terms of DOC removal efficiency.
Article
Chemistry, Physical
Gen Wang, Ke Wang, Zhuoyue Liu, Youyou Feng, Shengjiong Yang, Yaqiong Su, Xufang Qian, Pengkang Jin, Jing Wei
Summary: This study designs NiO nanospheres with hollow multi-shelled structure as a nanoreactor for the activation of peroxydisulfate to improve decomposition efficiency. The 3-shelled NiO HoMS exhibits enhanced kinetic rate (0.08 min-1) and mineralization degree (79.2%) compared to the 2-shelled NiO HoMS (0.04 min-1, 50%) and NiO nanoparticles (0.01 min-1, 29.8%) for the degradation of bis-phenol A. The hollow multi-shelled structure increases the accessibility of oxygen vacancy and enriches the local concentration of reactants, contributing to the enhanced catalytic efficiency.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Green & Sustainable Science & Technology
Keqian Li, Wuang Ren, Qianle Wang, Lu Xu, Xuan Shi, Xue Bai, Xin Jin, Xiaochang C. Wang, Pengkang Jin
Summary: This study investigated the discharge characteristics of rural greywater and proposed the use of a novel ecological seepage well (ESW) for on-site treatment. The ESW achieved high removal efficiencies of COD, TP, TN, and NH4+-N, resulting in effluent that met the Chinese standard for irrigation water quality. The study also revealed the mechanism of pollutant removal by ESW, demonstrating the potential for effective treatment of rural sewage.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biochemistry & Molecular Biology
Zhiyao Zhang, Zhaolin Li, Xue Bai, Juan Shi, Min Hu, Jin Chai, Keqian Li, Pengkang Jin
Summary: In this study, a catalyst-free alizarin green (AG) self-activating PMS catalytic system was constructed based on the photosensitization properties of dye, which achieved efficient degradation of the dye activator. The mechanism was revealed that the photo-excited AG transferred photo-induced electrons to PMS for its activation, generating reactive oxidizing species to degrade the dye pollutants. The self-catalytic system also showed good performance under natural sunlight irradiation, indicating its potential in wastewater treatment.
Article
Engineering, Chemical
Yao Li, Yukai Zong, Xin Jin, Kun Guo, Shiyi Hu, Pengkang Jin, Xiaochang Wang
Summary: This study demonstrated that organics modified by ozonation can be captured in real time by micro-bubble flocs mediated by the interaction among ozone, Al species, and other organics using the hybrid ozonation-coagulation process. The real-time capture strategy during the HOC process can increase organics removal efficiency and broaden the ozone dosing range. The formation of Al-organic complexes with C-O-Al coordination bonds protects the modified organics from further oxidation by ozone.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xin Jin, Keqian Li, Yixiong Wei, Yabo Shang, Lanzhou Xu, Mengwen Liu, Lu Xu, Xue Bai, Xuan Shi, Pengkang Jin, Jina Song, Xiaochang C. Wang
Summary: A novel CM-E-HOC process was proposed for the treatment of polymer-flooding produced water, achieving in situ self-cleaning and higher removal efficiency compared to the CM-EC process. The CM-E-HOC process showed improved coagulation performance due to the increased oxygen-containing functional groups and polymeric Fe species, resulting in better in situ self-cleaning performance and lower filtration resistance.
Article
Engineering, Chemical
Lu Xu, Xiaojia Wei, Yabo Shang, Yuetong Qi, Juan Shi, Keqian Li, Xin Jin, Xue Bai, Xuan Shi, Pengkang Jin
Summary: A facile impregnation-calcination route was proposed for the synthesis of Fe3+-doped TiO2 anchored with FeQDs, with enhanced catalytic performance for the degradation of phenolic pollutants under visible light. The obtained FeQDs/TiO2-x exhibited quasi-full visible light absorption and improved charge separation and interfacial transport capacity. The mechanism of the enhanced photocatalytic activity was elucidated based on material characterization and degradation experiments. The results demonstrated the high potential of FeQDs/TiO2-x for wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
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)
