Article
Soil Science
Konrad Egenolf, Philipp Schad, Ashly Arevalo, Daniel Villegas, Jacobo Arango, Hannes Karwat, Georg Cadisch, Frank Rasche
Summary: Brachiaria humidicola (syn. Urochloa humidicola) has been recognized for controlling soil nitrification through releasing nitrification inhibitors (NI), termed as biological nitrification inhibition (BNI), which can reduce net nitrification rates by 50 to 85%. Adjustment of soil pH and microbial background has little influence on BNI performance, while the decrease in net nitrification rates mainly depends on microbial N immobilization and efficient plant N uptake.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Soil Science
M. B. Vallejos, M. S. Marcos, C. Barrionuevo, N. L. Olivera
Summary: This study investigated the impact of irrigating with treated fish-processing effluents on the soil prokaryotic community. The results showed that irrigation with these effluents had significant effects on soil chemical properties, microbial activities, and community structure.
APPLIED SOIL ECOLOGY
(2022)
Article
Soil Science
Ting Lan, Mengxiao Li, Xiaoqian He, Ouping Deng, Wei Zhou, Ling Luo, Guangdeng Chen, Shu Yuan, Jing Ling, Min Zeng, Xuesong Gao
Summary: An aerobic N-15 microcosmic experiment was conducted to compare the inhibitory effects of the biological nitrification inhibitor (BNI), methyl 3-(4-hydroxyphenyl) propionate (MHPP) and the synthetic nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on the gross nitrification rate and the abundance and community composition of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in contrasting soils. The results showed that the two inhibitors had different effects on nitrification rates and the response of AOB to the inhibitors was more sensitive.
BIOLOGY AND FERTILITY OF SOILS
(2022)
Article
Engineering, Environmental
Helin Wang, Ping Li, Xiaohan Liu, Jing Zhang, Lisa Y. Stein, Ji-Dong Gu
Summary: This study investigated the influence of reactive oxygen species (ROS) on ammonia-oxidizing microorganisms (AOMs) in redox-fluctuating aquifers through field investigation and in-lab verification. The results showed that ROS played an important role in regulating AOMs, with ammonia-oxidizing archaea dominating in aquifers with lower ROS levels, and ammonia-oxidizing bacteria and heterotrophic nitrifying aerobic bacteria predominating in areas with higher ROS levels.
Article
Biodiversity Conservation
Di Liang, G. Philip Robertson
Summary: The long-term contribution of nitrification to nitrous oxide (N2O) emissions as well as the proportion of N2O derived from nitrification in different ecosystems remains uncertain, with actual values likely to be lower than estimated due to low N2O yields in cultured nitrifiers and competing sinks for available NH4+.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Environmental Sciences
Ting Lan, Nan Xie, Cheng Chen, Xiaoqian He, Ouping Deng, Wei Zhou, Guangdeng Chen, Jing Ling, Shu Yuan, Rong Huang, Zhaonan Tian, Christopher W. N. Anderson, Xuesong Gao
Summary: The effects of biological nitrification inhibitors on nitrogen loss and fertilizer N recovery efficiency in staple food crops are not well understood. This study investigated the effects of the biological nitrification inhibitor MHPP and/or urease inhibitor NBPT on NH3 volatilization, N leaching, and fertilizer N recovery efficiency in rice growth experiments. The results showed that the fertilizer N recovery efficiency significantly increased in the MHPP and NBPT+MHPP groups in calcareous soil, and the rice yield increased in the NBPT+MHPP treatment. However, these effects were not significant in acidic soil. MHPP had a significant effect on soil ammonia oxidizers, with the response depending on the soil type.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Soil Science
Jun Xie, Zifang Wang, Ying Wang, Shujiang Xiang, Ziyi Xiong, Ming Gao
Summary: Fertilization and soil environmental factors play a role in the niche differentiation of ammonia-oxidizing microorganisms and affect the ammonia-oxidation process. In this study, the effect of manure, chemical fertilizer, and manure combined with biochar on soil properties and the abundance, diversity, and structure of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in the rhizosphere were investigated. The results showed that chemical fertilizer and manure combined with biochar increased the potential nitrification rate (PNR) and AOA amoA gene abundance, while manure combined with biochar decreased PNR and AOA amoA gene abundance. The population structure of AOA and AOB was influenced by pH, available phosphorus, carbon-to-nitrogen ratio, soil moisture content, nitrate nitrogen, and ammonium nitrogen in the rhizosphere. The ammonia oxidation process in the acid purple soil was dominated by AOA in the presence of chemical fertilizer and pig manure combined with rice husk biochar.
APPLIED SOIL ECOLOGY
(2023)
Article
Environmental Sciences
Yujie Dai, Xiaolan Lin, Yi Luo, Jing Sun, Yun Tian
Summary: This study investigated the responses and relative contributions of ammonia-oxidizing archaea (AOA), ammonia-oxidizing bacteria (AOB), anaerobic ammonium oxidizing (anammox) bacteria, and denitrifying bacteria in mangrove sediments after spiking urea. The results indicated that nitrification (primarily mediated by AOA)-denitrification process played the most important role in nitrogen removal from the amendment of nitrogen short-term input in the mangrove sediments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Jing Lu, Yiguo Hong, Ying Wei, Ji-Dong Gu, Jiapeng Wu, Yu Wang, Fei Ye, Jih-Gaw Lin
Summary: The study analyzed the rates of ammonia oxidation (AO) and nitrite oxidation (NO) in the activated sludge from Xinfeng WWTPs, revealing strong activity of both processes. The research also identified AOB and Nitrospira as the main catalysts for nitrification in anammox-inoculated WWTPs, leading to efficient nitrogen removal.
Article
Engineering, Environmental
Bingbing Ma, Xiaojing Zhang, Aihua Gao, Chuang Ma, Yulin Hou, Zirui Zhao, Hao Hu
Summary: The CANON process was utilized for treating composting wastewater, resulting in decreased ammonia levels and increased total nitrogen removal rate. Microorganisms secreted more extracellular polymeric substances to counteract cell damage caused by harmful substances, maintaining system stability.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Agronomy
Yubing Dong, Xintong Xu, Junqian Zhang, Ying Jiao, Bingxue Wang, Chenyuan Wang, Zhengqin Xiong
Summary: This study investigated the emission characteristics and relative contributions of ammonia-oxidizing archaea (AOA) and bacteria (AOB) and other microbial processes to nitrous oxide (N2O) production in greenhouse vegetable fields in the middle and lower reaches of the Yangtze River. The results showed that the ammonia oxidation process is the dominant contributor to N2O production, regardless of soil pH. AOA-driven N2O emission rates were consistently higher than AOB-driven rates, and both were positively correlated with soil pH.
Article
Agronomy
Lei Cui, Dongpo Li, Zhijie Wu, Yan Xue, Yuchao Song, Furong Xiao, Lili Zhang, Ping Gong, Ke Zhang
Summary: The application of nitrification inhibitors (NIs) can effectively reduce nitrogen (N) loss by delaying the nitrification process through influencing the growth of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) in different soils.
Article
Biodiversity Conservation
Manman Chen, Hong Pan, Mingjie Sun, Wei He, Meng Wei, Yanhong Lou, Hui Wang, Quangang Yang, Haojie Feng, Yuping Zhuge
Summary: Organic fertilizer application increased N2O emissions from nitrification, dominated by the Nitrosospira cluster 3 lineage of AOB, while chemical N fertilizer stimulated N2O production from denitrification, dominated by the nirK lineage of Rhizobiales. The study highlights the different effects of organic and chemical fertilizers on N2O microbial emission pathways in agricultural soils.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Ting Lan, Yuxiao Huang, Xi Song, Ouping Deng, Wei Zhou, Ling Luo, Xiaoyan Tang, Jian Zeng, Guangdeng Chen, Xuesong Gao
Summary: Nitrogen management measures such as urease inhibitors, synthetic nitrification inhibitors, and biochar are commonly used in agriculture to mitigate nitrogen loss and increase fertilizer recovery efficiency. In a study conducted on calcareous soil under rice cropping, it was found that a combination of BNIs and UIs had the most effective results in reducing nitrogen loss and improving FRE by utilizing synergistic effects.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Studies
Setor Kwami Fudjoe, Lingling Li, Yuji Jiang, Benjamin Karikari, Junhong Xie, Linlin Wang, Sumera Anwar, Jinbin Wang
Summary: Soil amendments have a significant impact on the composition of soil AOA and AOB communities as well as potential nitrification activity. AOB play a dominant role in PNA. Bacterial communities play a crucial role in promoting sustainable agricultural production in semi-arid loess plateau environments.
Article
Environmental Sciences
QingYuan Lin, Jun Zhang, Linlin Yin, Wei Zuo, Lipin Li, Yu Tian
Summary: Metabolic uncoupling technology using 2,6-DCP can effectively reduce sludge yield and SMP contents, alter microbial morphology and community structure without significantly impacting settling performance, demonstrating potential environmental benefits in wastewater treatment systems.
Article
Engineering, Environmental
Guiyuan Cai, Lipin Li, Daikun Li, Qinyu Wang, Luyu Zhang, Jun Zhang, Wei Zuo, Yu Tian
Summary: A nonhomogeneous catalytic oxidation-adsorption system was constructed by coupling iron-manganese composite oxide with sulfite to enhance the recovery of oxidative capacity and accelerate the removal of arsenite. The FeMnOx/S(IV) system showed efficient and fast arsenite removal, with a high adsorption capacity. The system was also found to be superior to the FeMnOx alone system in terms of arsenite removal.
Article
Chemistry, Physical
Xiaoqin Xu, Jiahao Xie, Bin Liu, Rongyue Wang, Mingyang Liu, Jun Zhang, Jin Liu, Zhuang Cai, Jinlong Zou
Summary: By synthesizing a core-shell FeCo alloy/carbon nanosheets composite, we have successfully enhanced the catalytic activity and stability of oxygen reduction reactions. The composite material also exhibits excellent oxygen evolution reaction activity and potential application in zinc-air batteries.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Engineering, Environmental
Qinyu Wang, Lipin Li, Yu Tian, Lingchao Kong, Guiyuan Cai, Haoran Zhang, Jun Zhang, Wei Zuo, Boyang Wen
Summary: In this study, an elastic polyethyleneimine/sodium alginate aerogel was prepared and investigated for the adsorption of Cr(VI) and Cd(II). The aerogel exhibited excellent compressibility and abundant adsorption sites, leading to superior removal performance for Cr(VI) and Cd(II) even in the presence of multiple interfering factors. Moreover, the aerogel showed dynamic filtration ability for industrial wastewater containing Cr(VI) and Cd(II) in a fixed-bed column system.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Daikun Li, Jun Zhang, LiPin Li, Guiyuan Cai, Wei Zuo, Wei Zhan, Pu Wang, Yu Tian
Summary: In this study, a novel di-cationic epoxy resin cross-linker was successfully synthesized to obtain chitosan/cellulose hydrogels. The hydrogels exhibited a microporous structure with a large number of quaternary ammonium groups, and showed high adsorption efficiency for Congo red in a wide pH range. Additionally, the hydrogel-coated fabric demonstrated good oil resistance and efficient separation of oil/water mixtures.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Lixin Li, Cheng Peng, Zhaoshun Zhan, Fang Ma, Jun Zhang
Summary: A green and cost-saving starch-grafted flocculant (SBF) was synthesized and its effect on the dewatering efficiency of sludge was studied. The results showed that SBF neutralized the negative charges in the sludge system, promoted sludge flocs size increase and EPS decomposition, resulting in a decrease in filter cake moisture content and specific resistance to filtration. Additionally, SBF changed the secondary structures of protein, reducing hydrophilic substances and increasing hydrophobic substances, thus improving the hydrophobicity of molecules and increasing the dewatering capacity of sludge. The construction of sludge skeleton channels, charge neutralization, and hydrophobic association effect were identified as the primary mechanisms of SBF conditioning sludge dewatering.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jun Zhang, Xi Quan, Fu Li, Chenxi Zhen, Linlin Yin, Wei Zuo, Yu Tian
Summary: A novel ??-cyclodextrin encapsulated potassium ferrate composite was synthesized for the first time and used to degrade carbamazepine. The results showed that the composite exhibited superior stability and sustained release behavior.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Daikun Li, Wei Zhan, Xinlei Gao, Qi Wang, LiPin Li, Jun Zhang, Guiyuan Cai, Wei Zuo, Yu Tian
Summary: In this study, an aminated waste paper (WP-NH2) membrane was successfully prepared by oxidation, grafting, and crosslinking of polyethyleneimine (PEI) on various types of waste paper. WP-NH2 exhibited high adsorption capacity for anionic dyes and antibiotics and remained stable after multiple regenerations. Mechanistic studies revealed the adsorption mechanisms for different contaminants. The WP-NH2 membrane efficiently filtered out dyes and antibiotics from water, showing high selectivity and potential application in industrial wastewater remediation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Qinyu Wang, Wei Zuo, Yu Tian, Lingchao Kong, Guiyuan Cai, Haoran Zhang, Lipin Li, Jun Zhang
Summary: A novel cellulose aerogel was developed using polyethyleneimine-modified nanofibrillated cellulose and brushite coupling, which exhibited excellent adsorption capacity and regeneration performance for copper(II) ions. The aerogel also served as a continuous flow filter for industrial wastewater purification.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Daikun Li, Wei Zhan, Wei Zuo, LiPin Li, Jun Zhang, Guiyuan Cai, Yu Tian
Summary: Developing hydrogel adsorbents with both high mechanical property and high adsorption capacity is challenging due to the conflict between swelling and adsorption. This study proposes a method of preparing advanced hydrogel adsorbents with high entanglements and low crosslinks. Highly entangled hydrogels exhibit high elasticity, low hysteresis, and good fatigue resistance, while abundant carboxyl functional groups serve as sites for adsorbing pollutants and regulating swelling. Compared with highly crosslinked hydrogels, highly entangled hydrogels show significantly improved adsorption capacity and rate, as well as efficient deswelling during regeneration.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Lixin Li, Ying Lv, Chao Jia, Dawei Yin, Zilong Dong, Zhaoshun Zhan, Jiazhen Han, Jun Zhang
Summary: Sludge-cyanobacteria composite carbon (SCC) was successfully synthesized and showed excellent adsorption performance for heavy metal removal. The adsorption mechanism was investigated and the results provided theoretical and experimental basis for understanding the performance of composite carbon materials.
Article
Chemistry, Physical
Huijing Wang, Xi Quan, Qinyi Xiong, Linlin Yin, Yu Tian, Jun Zhang
Summary: In recent years, cuprous oxide (Cu2O) has been recognized as an important photocatalyst for efficient pollutant removal. However, the single Cu2O has shown limited degradation efficiency. In this study, a new photocatalyst (CuCD) was synthesized by coating beta-cyclodextrin on Cu2O, resulting in a significant reduction in particle size. The CuCD exhibited excellent photocatalytic activity, showing 2.0-fold, 1.7-fold, and 2.1-fold increases in the degradation rates of tetracycline (TC), methylene orange (MO), and congo red (CR), respectively, compared to pristine Cu2O. This work demonstrates the synergistic effect of adsorption and photocatalysis by introducing beta-cyclodextrin on Cu2O, providing efficient mass and electron transfer channels for accelerated separation and migration of photogenerated electrons.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Qinyu Wang, Wei Zuo, Yu Tian, Lingchao Kong, Guiyuan Cai, Haoran Zhang, Lipin Li, Jun Zhang
Summary: Heavy metals, especially the anionic heavy metal chromium, pose a significant threat to global water resources and human health. In this study, an ultralight nanofibrillated cellulose/chitosan aerogel was developed for efficient removal of both Cr(VI) and Cr(III). The aerogel exhibited high adsorption capacity, excellent selectivity, and mechanical integrity. Additionally, it showed regeneration capability and promising application prospects for alleviating heavy metal pollution in agriculture.
Article
Green & Sustainable Science & Technology
Lu Liu, Jun Zhang, Yifan Chen, Ze Guo, Ganzhan Xu, Linlin Yin, Yu Tian, Stevo Lavrnic
Summary: The treatment of sludge digestion liquid is a challenge in wastewater treatment. In this study, a novel anaerobic fluidized bed membrane bioreactor system (US-AnFMBR) was developed by combining ultrasonic processing and biochar. This system achieved improved sludge properties, removal of pollutants, and mitigation of membrane fouling, allowing for the recovery of nitrogen and phosphorus resources for agricultural reuse.
Article
Chemistry, Physical
Daikun Li, Jun Zhang, Wei Zhan, Guiyuan Cai, LiPin Li, Wei Zuo, Qinyu Wang, Yu Tian
Summary: This study demonstrates the potential application of PSMM-NH2 hollow microspheres in efficient adsorption of anionic dyes with high adsorption capacity and fast adsorption rate. The PSMM-NH2 membrane can be used for both efficient filtration of dyes and separation of oil-water mixtures.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
