Article
Engineering, Environmental
Shixin Zhang, Zhen Lei, Mawuli Dzakpasu, Qian Li, Yu-You Li, Rong Chen
Summary: Anaerobic membrane bioreactors (AnMBRs) show promising applications in treating municipal wastewater, effectively removing chemicals with strong electron-donating functional groups and highly hydrophobic compounds. Adsorption and biodegradation are key processes for TrOCs removal, and combining membrane separation technologies with bioreactor technology can enhance removal efficiency. Operating conditions play a critical role in AnMBRs performance, and addressing challenges and future perspectives can lead to wider adoption and improved TrOCs removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Review
Engineering, Environmental
Recep Kaya, Mustafa Evren Ersahin, Hale Ozgun, Borte Kose-Mutlu, Mehmet Emin Pasaoglu, Ismail Koyuncu
Summary: Membrane bioreactor (MBR) technology is considered a promising method for advanced wastewater treatment due to its high-quality effluent. However, fouling caused by intensive activated sludge used in submerged MBR systems is a major issue. To overcome this problem, researchers have explored the use of vibratory processes in MBRs. This review aims to gather current efforts in fouling control by vibratory motion, specifically in submerged activated sludge membrane bioreactors, and presents a comparative analysis of different vibration types and their experimental results.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Huanhuan Hou, Zhu Mengting, Liang Duan, Yang Zhao, Zhichao Zhang, Meichen Yao, Beihai Zhou, Haiya Zhang, Slawomir W. Hermanowicz
Summary: This study investigates the removal of sulfonamides in water treatment processes using fixed-film activated sludge membrane bioreactors (IFAS-MBRs). The results show that sulfonamides significantly inhibit the removal of COD and NH4+-N, but the average removal efficiencies of the tested sulfonamides are all over 94%. The study also identifies the degradation mechanisms of sulfonamides and characterizes the microbial community involved in their degradation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Agricultural Engineering
Rosalinda Mazzei, Abaynesh Yihdego Gebreyohannes, Emmaouil Papaioannou, Suzana P. Nunes, Ivo F. J. Vankelecom, Lidietta Giorno
Summary: This review analyzes the conjugation of major enzymes and membrane processes in biorefineries to develop various configurations of MBRs for the production of biofuels, phytotherapics, and food ingredients. The advantages and main drawbacks of MBR application in biorefineries are critically reviewed, with alternative strategies proposed to overcome main limitations in different application fields.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Kaichong Wang, Zhen Zhou, Siqi Yu, Jiaxin Qiang, Yao Yuan, Yangjie Qin, Kaiqi Xiao, Xiaodan Zhao, Zhichao Wu
Summary: CAIRM combines chemically enhanced primary treatment, ammonium ion exchange, and regeneration, as well as membrane bioreactor, to efficiently treat domestic wastewater. It achieved efficient removal of pollutants, with TN concentration of 2.3±0.9 mg/L in the effluent. This integrated process addresses critical challenges of insufficient nitrogen removal and high land occupancy of current processes.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
L. M. L. K. B. Lindamulla, V Jegatheesan, K. B. S. N. Jinadasa, K. G. N. Nanayakkara, M. Z. Othman
Summary: Membrane bioreactor technology integrates biological wastewater treatment and physical separation by membrane filtration. Mathematical models for membrane bioreactors have not adequately considered the impact of soluble microbial products on membrane fouling, but this study has integrated biological and physical models to address this issue. The developed integrated model considers the influence of soluble microbial products, extracellular polymeric substances, sludge removal, and membrane cleaning, enabling prediction of system performance and membrane fouling under various operating conditions.
Review
Engineering, Chemical
Yan Zhao, Yangbo Qiu, Natalie Mamrol, Longfei Ren, Xin Li, Jiahui Shao, Xing Yang, Bart van der Bruggen
Summary: Hospital wastewater contains harmful substances that require effective treatment. Membrane technology is utilized for molecular separation, with MBR technology demonstrating high removal efficiency. The development of hybrid MBR and integrated MBR-membrane systems can improve wastewater treatment efficiency and material recovery.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Meilin Zhang, Shaofeng Li, Jian Sun, Jianping Sun, Lei Wang, Rui Zhao
Summary: In order to reduce the hazard of sulfamethoxazole (SMX) to the water ecology, the removal mechanism of SMX in wastewater was revealed. The evaluation of PVDF/DA modified membrane in the membrane bioreactor (MBR) showed good removal ability for SMX after certain acclimation. The PVDF/DA membrane could alleviate membrane fouling, improve the service life of the membrane, and reduce its operating cost.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Engineering, Chemical
Muhammad Bilal Asif, Baoyu Ren, Chengyue Li, Keyou He, Xihui Zhang, Zhenghua Zhang
Summary: Intermittent in-situ ozonation was provided in the Fe (II)-dosed membrane bioreactor for the first time, showing a 33% reduction in membrane fouling without detrimental effects on effluent quality. The study suggests that this method is a simple and attractive approach to extend the operation of iron-dosed MBRs.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Yu-Xiang Lu, Heyang Yuan, Hameer Chand, You Wu, Yu-Li Yang, Heng Liang, Hai-Liang Song
Summary: Osmotic membrane bioreactors (OMBRs) are considered suitable for treating wastewater containing tetracycline, but the impact of membrane fouling layer on tetracycline filtration and its relationship with microbial activity is still unclear. This study investigated the effects of draw solute concentration and type on the formation of a membrane fouling layer for tetracycline filtration and found that the fouling layer played an important role in tetracycline filtration and degradation. The study provided insights into the combined effect of membrane fouling and microorganisms on tetracycline removal.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Agata Egea-Corbacho, Ana Pilar Martin-Garcia, Ana Amelia Franco, Jose Maria Quiroga, Rune Rojgaard Andreasen, Mads Koustrup Jorgensen, Morten Lykkegaard Christensen
Summary: Microplastics are a major threat to the environment and aquatic life, and one of the main sources of microplastics in water and land environments is wastewater treatment plants. This study aimed to investigate the presence and removal of microplastics in wastewater and sludge from different types of treatment plants. The results showed high removal efficiency in the treatment process, with a decrease in microplastic concentration from influent to effluent. The most common forms of microplastics detected were fragments and fibers, and several types of polymers were identified.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Muhammad Bilal Asif, Chengyue Li, Baoyu Ren, Tahir Maqbool, Xihui Zhang, Zhenghua Zhang
Summary: In-situ ozonation in the ceramic MBR membrane tank, known as Oz-MBR, enhanced micropollutant removal efficiency and alleviated membrane fouling. The increased abundance of microbial taxa responsible for removing complex pollutants and/or ozone-assisted oxidation may contribute to the improved removal efficiency of micropollutants in the Oz-MBR.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Gagandeep Kaur, Kazuho Nakamura, Kentaro Ogawa, Kenji Wakui
Summary: Being a promising and sustainable technology, Membrane Bioreactor (MBR) will be highly in demand in the future. The development of novel fouling monitoring indexes based on filtration properties enables more economical processes. The module clogging and fouling properties were monitored in a lab-scale MBR using visual observation, filtration resistance, and zeta potential.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ali Behboudi, Toraj Mohammadi, Mathias Ulbricht
Summary: Surface-modified silver nanoparticles with different functional groups were synthesized and used as functional fillers in nanocomposite membranes for membrane bioreactors (MBRs). The modifications successfully immobilized the nanoparticles inside the membrane, reducing silver release. The modified nanoparticles exhibited enhanced antimicrobial activity and improved the antifouling properties of the membranes. This led to significant improvements in MBR performance, with increased flux, COD removal, and flux recovery.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Environmental
Thitiwut Maliwan, Wiboonluk Pungrasmi, Jenyuk Lohwacharin
Summary: The presence of microplastics in sewage sludge during wastewater treatment in a membrane bioreactor system decreased sludge floc size and hydrophobicity, and had a slight impact on microbial structure. Microplastics also acted as a scouring material on membrane surfaces, affecting biofilm structures and reducing severe cake fouling in the system operated for up to 4 months.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Environmental Sciences
Luong N. Nguyen, Minh T. Vu, Hang P. Vu, Md. Abu Hasan Johir, Leen Labeeuw, Peter J. Ralph, T. M. I. Mahlia, Ashok Pandey, Ranjna Sirohi, Long D. Nghiem
Summary: This paper reviews the current state of microalgal culture development for carbon capture and utilization (CCU) and highlights its potential contribution to addressing climate change challenges. Innovative system designs are crucial to achieve large-scale CO2 capture by microalgae, and downstream processes of microalgal culture are important for the overall success of microalgae-based CCU.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Review
Engineering, Environmental
Ting Zhou, Zehao Zhang, Huan Liu, Shiman Dong, Long D. Nghiem, Li Gao, Alex V. Chaves, Arash Zamyadi, Xuan Li, Qilin Wang
Summary: This review summarizes the occurrence, classification, emission sources, and environmental risk of pharmaceutical compounds in aqueous environments. The efficiency, mechanisms, and influencing factors for the removal of pharmaceutical compounds through microalgae-based technology are further discussed. Microalgae-based technology can mainly remove pharmaceutical compounds through bioadsorption, bioaccumulation, biodegradation, and photodegradation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Shiyang Huang, Jaleh Mansouri, James A. McDonald, Stuart J. Khan, Greg Leslie, Chuyang Y. Tang, Anthony G. Fane
Summary: This work proposes a new approach based on the electrospray technique to print polyamide thin-film composite membranes in a single scan. The study found that a substrate with a 4-hour polydopamine coating and a cone-jet spray at 2.5 cm spray distance showed the highest NaCl rejection at 98.1%.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Chemistry, Physical
Shudi Mao, Casey Onggowarsito, An Feng, Stella Zhang, Qiang Fu, Long D. Nghiem
Summary: This research developed a novel cryogel solar vapor generator system with excellent water management properties for desalination. The system demonstrated high intermediate water content, fast evaporation rate, and strong salt resistance, showing great potential for practical applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Mahshid S. Z. Farzanehsa, Guido Carvajal, John Mieog, Stuart J. Khan
Summary: Continuous online monitoring is important for ensuring reliable water quality outcomes and effective removal of microbial substances during advanced wastewater treatment processes. However, most microbial indicators cannot be continuously monitored online. This study used a combined ozonation-biological media filtration process to reduce microbial indicator concentration and developed models for predicting microbial indicator concentration changes. Machine learning algorithms were applied to identify physico-chemical predictors and their associations with microbial indicator reduction. Support vector machines (SVM) with a Gaussian kernel classifier showed superior performance in microbial removal prediction. The study provides an efficient method to predict the effectiveness of the O-3/BMF process in removing microbial indicators based on commonly measured physico-chemical parameters.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Construction & Building Technology
Kirthi Chetty, Ulf Garbe, Zhiyang Wang, Shuxin Zhang, Timothy McCarthy, Faisal Hai, Guangming Jiang
Summary: This study developed an innovative bioconcrete by using waste-activated sludge as a source for non-axenic sulfate-reducing bacterial (SRB) granules. The bioconcrete showed satisfactory mechanical properties and self-healing performance, and could effectively precipitate calcium carbonate in different water media.
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
(2023)
Article
Environmental Sciences
Zillur Rahman, Weijia Liu, Lara Stapleton, Nikki Kenters, Dewa A. P. Rasmika Dewi, Ori Gudes, Helen Ziochos, Stuart J. Khan, Kaye Power, Mary-Louise McLaws, Torsten Thomas
Summary: Antimicrobial resistance (AMR) is a major global health threat, and current surveillance programs lack monitoring outside healthcare settings. Wastewater testing can provide a simple and continuous way to survey AMR trends in the community. By monitoring wastewater in Greater Sydney, Australia, we found regular presence of extended-spectrum beta-lactamases-producing Enterobacteriaceae (ESBL-E), and occasional presence of carbapenem-resistant Enterobacteriaceae (CRE), vancomycin-resistant enterococci (VRE), and methicillin-resistant Staphylococcus aureus (MRSA). Our study highlights the potential of routine wastewater surveillance for understanding factors driving AMR distribution.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Chemical
Lisa Aditya, Hang P. Vu, Luong N. Nguyen, T. M. Indra Mahlia, Ngoc Bich Hoang, Long D. Nghiem
Summary: This study evaluates the performance of a ceramic microfiltration membrane for extracting clean water and pre-concentrating microalgae. The results show that membrane fouling is specific to each microalgae species, but can be efficiently mitigated by aeration and regular backwashing. C. vulgaris exhibited considerable membrane fouling over time, while Scenedesmus sp. showed negligible fouling. The ceramic microfiltration membrane can simultaneously enrich the microalgae solution and recycle permeated water for microalgae cultivation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Environmental Sciences
Bao-Trong Dang, Xuan-Thanh Bui, Thanh-Tin Nguyen, Huu Hao Ngo, Long D. Nghiem, Ky-Phuong-Ha Huynh, Thi-Kim-Quyen Vo, Thi-Dieu-Hien Vo, Chitsan Lin, Shiao-Shing Chen
Summary: Co-culture of microalgae-activated sludge has the potential to purify wastewater while reducing energy demand from aeration. This study used a mechanically stirred membrane photobioreactor to evaluate the impact of biomass retention time on treatment performance and membrane fouling. Results showed that the highest productivity was achieved at a biomass retention time of 7 days, with a lower retention time leading to increased fouling rates. The optimum biomass retention time of 7 days allowed for sufficient access to light and nutrient exchange for mutualistic interactions between microalgae and activated sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Mahshid Farzanehsa, Liam C. C. Vaughan, Arash Zamyadi, Stuart J. J. Khan
Summary: Applications of advanced oxidation processes (AOPs) in water and wastewater treatment have been of great interest. UV-chlorine (UV-Cl) is emerging as a potentially cost-effective alternative to UV/hydrogen peroxide (UV-H2O2), showing efficient degradation of emerging chemicals in contaminated water. UV-H2O2 does not have superiority over UV-Cl in terms of disinfection by-product (DBP) formation. However, more investigation and pilot-scale studies are needed to establish UV-Cl as a reliable alternative to UV-H2O2.
WATER AND ENVIRONMENT JOURNAL
(2023)
Review
Engineering, Environmental
Michael J. Stapleton, Ashley J. Ansari, Faisal I. Hai
Summary: The adsorption of contaminants onto microplastics, including heavy metals, PFAS, PCBs, PAHs, PPCPs, and PBDs, has received significant attention. Understanding the factors influencing antibiotic sorption onto microplastics is crucial due to the potential role in antibiotic resistance. This review highlights the physico-chemical properties of polymers, antibiotic properties, and solution properties as key factors affecting antibiotic sorption onto microplastics.
Article
Environmental Sciences
Michael J. Stapleton, Ashley J. Ansari, Aziz Ahmed, Faisal I. Hai
Summary: This study examines the changes in properties of different types of plastics after simulated environmental degradation and determines their suitability for upcycling or downcycling. It finds that PET and PP are unsuitable for upcycling due to color changes, while PLA has reduced tensile strength and significant chemical and surface changes. PC shows good upcycling potential due to its resistance to degradation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
H. M. Abd-ur-Rehman, V. Prodanovic, A. Deletic, S. J. Khan, J. A. McDonald, K. Zhang
Summary: Green walls provide a new and on-site method for treating and reusing greywater in urban areas. This study investigated the performance of different lightweight green wall media in removing twelve emerging contaminants from greywater. The results showed that coco coir and media mix columns achieved excellent removal of all contaminants through adsorption, with some hydrophilic contaminants also undergoing biodegradation. However, further research is needed to investigate the synergetic contribution of plants and media in removing these contaminants in long-term vegetated green wall systems.
Article
Multidisciplinary Sciences
Xuan Li, Huan Liu, Li Gao, Samendra P. Sherchan, Ting Zhou, Stuart J. Khan, Mark C. M. van Loosdrecht, Qilin Wang
Summary: Although the COVID-19 emergency status is easing, the pandemic still affects healthcare systems globally. The use of wastewater-based epidemiology has been shown to accurately predict COVID-19-induced hospital admissions, providing early warnings for healthcare systems. This study demonstrates the potential of wastewater-based epidemiology as an effective method for predicting disease occurrence.
NATURE COMMUNICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Xianbo Sun, Ying Pan, Yanyu Song, Wen Liu, Long D. Nghiem, Qilin Wang, Zhengqing Cai
Summary: A novel carbon quantum dots decorated C-doped alpha-Bi2O3 photocatalyst (CBO/CQDs) was synthesized and showed significantly improved contaminants removal efficiencies. CBO/CQDs exhibited much higher ceftriaxone sodium degradation rate constant (k) compared to pure alpha-Bi2O3 and C-doped alpha-Bi2O3. The synergistic effect of carbon doping, CQDs loading, and reduced particle size of CBO/CQDs enhanced the utilization of visible light and efficient separation of photogenerated carriers.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(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)