Article
Environmental Sciences
Linlin Li, Jing Zhang, Qiuyue Shi, Shaoyong Lu
Summary: To compare the effect of different oxygen supply strategies on nitrogen removal in constructed wetlands, tidal flow constructed wetlands (TFCWs) and intermittently aerated constructed wetlands (IACWs) were investigated. Results showed that IACWs had high removal efficiencies for NH4+-N and COD, while TFCWs showed higher efficiency for total nitrogen removal due to enhanced nitrification and denitrification. The bacterial communities in TFCWs were enriched with key genera related to nitrogen transformation, while IACWs had a more complex and robust community structure.
Article
Environmental Sciences
Manping Zhang, Jung-Chen Huang, Shanshan Sun, Muhammad Muneeb Ur Rehman, Shengbing He, Weili Zhou
Summary: Constructed wetlands are effective in removing nitrogen from water, with potential activities of DNRA, anammox, denitrification, and nitrification contributing to nitrogen removal. Planted mesocosms showed better performance in nitrogen removal compared to unplanted mesocosms, with higher values of potential activities of nitrogen-cycling pathways observed in the planted mesocosms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Chong Cao, Juan Huang, Chun-Ni Yan, Yi-Xuan Ma, Jun Xiao, Xin-Xin Zhang
Summary: The addition of AgNPs significantly inhibited NH4+-N removal, but the impacts varied in constructed wetlands with different flow directions. 0.5 mg/L AgNPs led to better NH4+-N removal in downward flow CW, while higher nitrifying gene abundances in upward flow CW at 2.0 mg/L resulted in better NH4+-N removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Rui Ma, Jiangsen Ma, Yuzhe Chen, Yiyuan Zhuo, Linsong Cheng, Lei Jiang, Yuanxiang Mao, Qiushi Shen, Caocun Liu, Fangying Ji
Summary: Tidal flow constructed wetlands (TFCWs) are an effective method for treating domestic wastewater in rural areas, but they are often restricted by denitrification. This study aimed to explain the nitrogen removal process in TFCWs and provide an effective method to increase nitrogen removal. The results showed that zeolite-filled TFCWs had good pollutant removal performance and layered effect, and optimizing the influent enhanced nitrogen removal.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Manping Zhang, Shanshan Sun, Xushun Gu, Yuanyuan Peng, Pan Yan, Jung-Chen Huang, Shengbing He, Xiaohui Bai, Yun Tian, Yang Hu
Summary: The artificial tidal wetlands ecosystem is effective in treating saline water and contributes significantly to global nitrogen cycles. This study operated seven experimental tidal flow constructed wetlands to remove nitrogen from saline water at different salinities. The study identified multiple microbial processes involved in nitrogen loss and found that nitrogen assimilation by plants accounted for 6.9-23.4% of the total nitrogen transformation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Juan Xu, Xinxing Huang, Pei Luo, Miaomiao Zhang, Hongfang Li, Dianlin Gong, Feng Liu, Runlin Xiao, Jinshui Wu
Summary: This study investigated the role of root exudates released by macrophytes in nitrogen removal in constructed wetlands (CWs). The results showed that Myriophyllum aquaticum released root exudates at a higher rate compared to other plants, and the release rate was influenced by ammonium concentration and harvesting frequency. CWs with plants showed higher ammonium removal efficiencies than those without plants, while there was no significant difference for total nitrogen removal. The microbial community composition in sediments was slightly different between root exudate and no-root exudate treatments. The study suggests that adding high levels of root exudates can enhance nitrogen removal in CWs for carbon-limited wastewater treatment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Yucong Zheng, Zhenzhen Wang, Ting Cao, Dan Yang, Ying Liu, Zhuanzhuan Sun, Rong Chen, Mawuli Dzakpasu, Xiaochang C. Wang
Summary: This study investigated the enhancement effects and mechanisms of alkali pretreated reeds as a plant-based carbon source on nitrogen removal in integrated vertical flow constructed wetlands (IVCW). The results showed that the alkali pretreated reeds significantly improved nitrogen removal efficiency, primarily through increasing denitrification and anaerobic ammonia oxidation processes. The findings contribute to efficient nitrogen removal in constructed wetlands by enhancing denitrification pathways.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Xiuwen Qian, Juan Huang, Chunni Yan, Jun Xiao
Summary: In this study, the introduction of 10-30 mg/L nano zero-valent iron (nZVI) into constructed wetlands (CWs) was found to effectively promote nitrogen removal and increase the activity of nitrogen cycling enzymes. However, high dosage of nZVI inhibited the activity of certain enzymes, highlighting the importance of controlling the appropriate dosage.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Agricultural Engineering
Yu Zhang, Shanshan Sun, Xushun Gu, Qingjiang Yu, Shengbing He
Summary: This review comprehensively evaluates the functions of hydrophytes in nitrogen removal and GHGs reduction in constructed wetlands, suggesting strategies for constructing an ideal CW system and proposing outlooks for future research. It provides guidance and novel perspectives for the full life-cycle utilization of hydrophytes in CWs.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xu Zhang, Peixun Guo, Xiaotong Yang, Xingjie Yao, Haibing Cong, Bing Xu
Summary: Improper disposal of abandoned plant materials and wastewaters with a low C/N ratio can lead to environmental issues. The utilization of plant materials as external carbon sources in constructed wetlands (CWs) shows promise in recovering plant resources and promoting nitrogen removal in wastewater treatment. This research investigated three types of deciduous leaves and found that they effectively released organic carbon and enhanced nitrogen removal in CWs. The findings suggest that using abandoned plant materials as external carbon sources in CWs has tremendous application potential and can significantly improve nitrogen removal efficiency.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Shaoyong Lu, Tao Zou, Pan Qin, Xuan Zhang, Guoqiang Wang, Yuchun Qin, Quan Wang
Summary: This study investigated the removal effect and mechanism of dichlorvos (DDVP) in lab-scale vertical flow constructed wetlands (VFCWs). The results showed that VFCWs can remove DDVP with an average removal efficiency of 94%-95% in long-term operation. In addition, VFCWs also exhibited significant removal efficiency for soluble phosphate (SRP) and total phosphorus (TP) at 48.60%-64.10% average removal efficiency, and the presence of DDVP enhanced the nitrogen removal effect of CWs. High-throughput sequencing and proteomic analysis revealed the microbial and plant root proteins involved in the removal process of DDVP in VFCWs. Overall, the use of VFCWs for treating organic phosphate wastewater shows promising prospects.
Article
Engineering, Environmental
Xin Zhao, RuiGang Wang, Lu Dong, Wen Li, Ming Li, Haiming Wu
Summary: Intermittently-aerated subsurface flow constructed wetlands showed efficient removal of DMP, COD, and NH4+-N under different influent DMP concentrations, with a good fitting relationship between TN removal and DMP reduction. The decomposition of DMP in CWs generated smaller molecular fractions and intermediates that could potentially serve as carbon sources for denitrification processes. These findings contribute to a better understanding of DMP removal mechanisms and offer guidance for practical applications of CWs in treating wastewater contaminated with phthalates.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Agricultural Engineering
Aleksandra Wdowczyk, Agata Szymanska-Pulikowska, Bernard Galka
Summary: This study compared the efficiency of removing selected pollutants from landfill leachate using different types of filling in vertical flow constructed wetlands. The results showed that zeolite substrates achieved the best reductions for most parameters.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Georgios D. Gikas, Vassiliki A. Papaevangelou, Vassilios A. Tsihrintzis, Maria Antonopoulou, Ioannis K. Konstantinou
Summary: The study indicates that biodegradation and adsorption onto substrate were the most prevalent removal routes of the target EPs in CWs.
Article
Ecology
Yanling Feng, Yifeng Wu, Bo Wei, Hongsheng Zhu, Yao Xu
Summary: This paper introduces a hybrid constructed wetlands system used for remediating low-polluted rivers, and discusses its construction method and treatment effects. The results show that the hybrid system has a satisfactory pollutant removal capacity and ecological benefits, suitable for different influent loads.
ECOLOGICAL ENGINEERING
(2022)
Article
Agricultural Engineering
Xinbo Zhang, Yuanying Yang, Huu Hao Ngo, Wenshan Guo, Tianwei Long, Xiao Wang, Jianqing Zhang, Fengxia Sun
Summary: This study investigates the degradation of urea in reclaimed water using thermally modified biochar (TBC) and peroxymonosulfate (PMS) under neutral and weak acid conditions. The results show that TBC effectively degrades urea and the presence of inorganic anions in TBC enhances the activation of PMS. C-O and -OH act as active sites, providing electrons and activating PMS.
BIORESOURCE TECHNOLOGY
(2022)
Review
Agricultural Engineering
Dongle Cheng, Huu Hao Ngo, Wenshan Guo, Soon Woong Chang, Dinh Duc Nguyen, Lijuan Deng, Zhuo Chen, Yuanyao Ye, Xuan Thanh Bui, Ngoc Bich Hoang
Summary: This paper critically reviews the technologies employed in producing biohydrogen from biowastes through fermentation, discussing the challenges and future perspectives. Various advanced strategies for enhancing biohydrogen yields are explored.
BIORESOURCE TECHNOLOGY
(2022)
Editorial Material
Agricultural Engineering
Reeta Rani Singhania, Wenshan Guo, Luciana Porto de Souza Vendenberghe, Giorgio Mannina, Sang-Hyoun Kim
Summary: The 3rd International Conference for Bioresource Technology for Bioenergy, Bioproducts & Environmental Sustainability (BIORESTEC) was held online from 17 to 19 May 2021 with more than 120 participants from all over the world. The conference aimed to facilitate knowledge and idea exchange among researchers, industry professionals, and policymakers in the field of biorefinery, and to discuss the latest trends in biotechnology, bioenergy, and biobased products. The talks during the conference mainly focused on sustainable practices utilizing microorganisms to produce biomolecules, including bioenergy, from waste residues.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Minh Hang Do, Huu Hao Ngo, Wenshan Guo, Soon Woong Chang, Dinh Duc Nguyen, Ashok Pandey, Pooja Sharma, Sunita Varjani, Thi An Hang Nguyen, Ngoc Bich Hoang
Summary: The study investigated a dual-chamber microbial fuel cell-based biosensor for monitoring copper and arsenic in municipal wastewater. By optimizing operational conditions, the biosensor's sensitivity was improved and it was found to be able to detect copper and arsenic concentrations over a wider range with a high detection accuracy.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Chenhao Sun, Qing Du, Xinbo Zhang, Zhe Wang, Junyi Zheng, Qingzheng Wu, Zhimeng Li, Tianwei Long, Wenshan Guo, Huu Hao Ngo
Summary: Using anaerobic membrane bioreactors (AnMBRs) to treat swine wastewater is an effective method to recover bioenergy. This study found that adding biochar prepared from spent coffee grounds (SCG-BC) to AnMBR can increase methane yield, reduce CO2 production, and decrease membrane fouling.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Yatong Li, Xinbo Zhang, Huu Hao Ngo, Wenshan Guo, Dan Zhang, Huizhong Wang, Tianwei Long
Summary: Applying magnetic biochar as a UF membrane pretreatment strategy can effectively reduce membrane fouling in water purification processes.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Fei Yang, Xinbo Zhang, Zixuan Zhao, Wenshan Guo, Huu Hao Ngo
Summary: This study compares the degradation, mineralization rate, and accumulation capacity of adsorbable organic halogen (AOX) for chlorophenols in the Fe2+/persulfate (PS) process with the addition of exogenic halides. The results indicate that exogenic X- can lead to a decrease in chlorophenols degradation and mineralization rate, undesirable accumulation of AOX, and generation of halogenated by-products which are more toxic than precursor chlorophenols.
Article
Engineering, Environmental
Xiaole Yin, Xi Chen, Xiao-Tao Jiang, Ying Yang, Bing Li, Marcus Ho-Hin Shum, Tommy T. Y. Lam, Gabriel M. Leung, Joan Rose, Concepcion Sanchez-Cid, Timothy M. Vogel, Fiona Walsh, Thomas U. Berendonk, Janet Midega, Chibuzor Uchea, Dominic Frigon, Gerard D. Wright, Carlos Bezuidenhout, Renata C. Picao, Shaikh Z. Ahammad, Per Halkjaer Nielsen, Philip Hugenholtz, Nicholas J. Ashbolt, Gianluca Corno, Despo Fatta-Kassinos, Helmut Buergmann, Heike Schmitt, Chang-Jun Cha, Amy Pruden, Kornelia Smalla, Eddie Cytryn, Yu Zhang, Min Yang, Yong-Guan Zhu, Arnaud Dechesne, Barth F. Smets, David W. Graham, Michael R. Gillings, William H. Gaze, Celia M. Manaia, Mark C. M. van Loosdrecht, Pedro J. J. Alvarez, Martin J. Blaser, James M. Tiedje, Edward Topp, Tong Zhang
Summary: Surveillance of antibiotic resistance genes (ARGs) in environmental sectors is increasingly conducted to complement studies in human and animal sectors. However, comparing and synthesizing results from different studies using different test methods and bioinformatic analysis approaches pose substantial challenges. This article suggests a universal unit (ARG copy per cell) for reporting biological measurements of ARGs in order to improve comparability. By comparing commonly used quantification units, this study proposes a step towards standardization.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yu Yang, Yu Deng, Xianghui Shi, Lei Liu, Xiaole Yin, Wanwan Zhao, Shuxian Li, Chao Yang, Tong Zhang
Summary: The majority of current regulatory practices for beach water quality monitoring rely on culture-based enumeration of faecal indicator bacteria (FIB). To address the limitations of culture methods and the reliability of FIB, a Nanopore metagenomic sequencing-based workflow was developed to estimate microbes in beach waters. The accuracy and potential of this workflow in microbial risk assessment were demonstrated.
Article
Engineering, Environmental
Xiaole Yin, Liguan Li, Xi Chen, Yang-Yu Liu, Tommy Tsan-Yuk Lam, Edward Topp, Tong Zhang
Summary: This study retrieved resistome profiles from various habitats and benchmarked their features. The results showed that wastewater and wastewater treatment works harbored more diverse genotypes of ARGs, while fecal samples had higher ARG abundance. Bacterial taxonomy composition was significantly correlated with resistome composition. The study also developed a resistome-based microbial attribution prediction model to identify source-sink connectivities.
Article
Genetics & Heredity
Yue Huang, Liguan Li, Xiaole Yin, Tong Zhang
Summary: A comprehensive bacterial PAH-degrading gene database was established and the PAH biodegradation capability was explored through a genome-function relationship approach. The investigation of functional genes in PAH degraders suggested that genes encoding hydratase-aldolase could be used as a biomarker for identifying potential degraders. Moreover, the study revealed potential novel PAH-degrader lineages and predicted 28 newly PAH degraders using random forest analysis.
ENVIRONMENTAL MICROBIOME
(2023)
Review
Engineering, Environmental
Lijuan Deng, Wenshan Guo, Huu Hao Ngo, Xinbo Zhang, Dong Wei, Qin Wei, Shihai Deng
Summary: This review presents the latest developments in catalytic upcycling of polymer wastes, including high-temperature and low- to intermediate-temperature approaches. Diverse value-added products are obtained from these methods.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Yi-Lu Sun, Han-Lin Wang, Huu Hao Ngo, Wenshan Guo, Bing-Jie Ni, Xue-Ning Zhang, Wei Wei
Summary: In this study, a comprehensive methodology was developed to design and operate S0AD bioreactors, effectively managing fluctuations in nitrogen removal efficiency caused by seasonal temperature variations. By establishing a mathematical model and considering influence factors, a pilot-scale bioreactor was designed to maintain a stable effluent nitrate concentration throughout the year, resulting in a substantial reduction in excessive nitrate removal, sulfur consumption, and sulfate production.
ENVIRONMENTAL RESEARCH
(2024)
Review
Chemistry, Physical
Seyed Masoud Parsa, Fatemeh Norozpour, Saba Momeni, Shahin Shoeibi, Xiangkang Zeng, Zafar Said, Wenshan Guo, Huu Hao Ngo, Bing-Jie Ni
Summary: The consumption of biologically-contaminated water annually leads to numerous deaths, especially among children in developing countries. Solar-based water desalination systems, with the use of nanomaterials, are considered effective in providing safe drinking water by eliminating biological contaminants. This paper presents a comprehensive review of the effectiveness of nanomaterial-assisted solar stills and solar interfacial evaporators in combating various forms of biological contamination, focusing on viruses and antimicrobial resistance pathogens. The potential transmission routes and importance of AMR pathogens in the environment and water bodies are also discussed.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Environmental Sciences
Jianyuan Zhen, Yiyi Zhao, Xuefeng Yu, Wenshan Guo, Zhuangming Qiao, Sherif Ismail, Shou-Qing Ni
Summary: The combination of partial nitrification, nitrite-denitrifying phosphorus removal, and simultaneous nitrification-endogenous denitrification showed high efficiencies in COD, nitrogen, and phosphorus removal. It provided an economic and technical alternative for treating wastewater with high levels of C, N, and P, reducing costs and carbon demand.
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)
