Article
Agricultural Engineering
Yinong Zhang, Yongzhen Peng, Xinjie Gao, Xiyao Li
Summary: This study used the PNPR technology to treat municipal wastewater, successfully resolving the conflict between nitrification and phosphorus removal and achieving bio-enhanced phosphorus removal and recovery. The study also found that the phosphorus removal and recovery process can improve the activity of AOB.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Weiran Chu, Yi Shi, Liang Zhang
Summary: This article mainly discusses the importance of phosphorus recovery and utilization, and introduces a new technology for efficient phosphorus removal through the accumulation of polyphosphate accumulating organisms. The article also discusses the reuse of polyphosphates with different chain lengths and suggests possible application pathways.
Article
Environmental Sciences
Hao Zhang, Shuang-Shuang Zhang, Liang Zhu, Yi-Ping Li, Lin Chen
Summary: This study investigated the performance and mechanism of phosphorus uptake/release from sewage as the phosphorus content in biofilm changed. The results showed that PAOs shifted metabolism from glycogen accumulation to polyphosphate accumulation with increasing Pbiofilm, but release of polyphosphate was inhibited after phosphorus concentration stabilized. Harvesting phosphorus was necessary to maintain system stability by releasing saturated phosphorus in PAOs for adequate storage space. 31P NMR analysis revealed phosphorus storage in EPS and cell of PAOs, with ortho-phosphate predominantly released by EPS and poly-phosphate by cell. Despite no impact on biofilm characteristics and microbial communities, some PAOs were enriched and others inhibited with repeated cycles of aerobic/anaerobic operation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Abdelmajeed Adam Lagum
Summary: The study investigates the possibility of simultaneous electrochemical and biological phosphorus removal in a single reactor, showing that such method can effectively remove phosphorus from water with high efficiency and is suitable for small-scale plants for various applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Njabulo Thela, David Ikumi, Theo Harding, Moses Basitere
Summary: This study cultured phosphorus-accumulating organisms (PAOs) in the laboratory and investigated their preference for different carbon sources and their ability to remove phosphorus from wastewater. The results showed that PAOs preferred propionate, and the concentration of PAO biomass increased when the propionate concentration in the wastewater increased.
Article
Engineering, Environmental
Luiz Antonio Papp, Juliana Cardinali-Rezende, Wagner Alves de Souza Judice, Marilia Bixilia Sanches, Welington Luiz Araujo
Summary: The eutrophication of water bodies caused by the release of treated wastewater rich in total phosphorus (TP) is a worldwide problem. In this study, a full-scale wastewater treatment plant (WWTP) was developed with an enhanced biological removal of phosphorus (EBPR) process to address this issue. The use of anaerobic, aerobic, and anoxic zones, followed by flocculation, effectively reduced the TP levels in the treated wastewater and prevented eutrophication. Additionally, this study proposes a complementary treatment to improve TP removal and minimize the harmful impacts on receiving water bodies.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Agricultural Engineering
Tiantian Sun, Rui Du, Qiongpeng Dan, Ying Liu, Yongzhen Peng
Summary: This study demonstrated rapid achievement of partial nitrification in an EBPR reactor treating domestic wastewater, leading to stable nitritation within a short period of time. AOB recovered faster than NOB, facilitating the rapid development of PN and significantly increasing both ammonia oxidation rates and nitrite accumulation rates.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Min Ni, Yang Pan, Yue Chen, Xingyu Zhang, Yong Huang, Zuowei Song
Summary: The study revealed that temperature has significant effects on the relative competition between PAOs and GAOs, as well as the performance of BSBR process. PAOs and GAOs alternate in dominance under different seasons and temperatures, leading to variations in phosphorus removal performance.
BIOCHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Xiang-Yu Long, Ran Tang, Tao Wang, Guang-Jian Tao, Jia-Yue Wang, Hai-Wei Zhou, Ming Xue, Yong-Ping Yu
Summary: The study investigated the characteristics of enhanced biological phosphorus removal process under the combined actions of intracellular and extracellular polyphosphate using P-31 Nuclear Magnetic Resonance and fractionation methods. It found that the hydrolysis/synthesis of polyP played a key role in phosphate migration and transformation, leading to the absorption and transformation of VFAs, as well as the continuous hydrolysis and synthesis of PHAs. The accumulation of orthoP in different compartments drove the migration of orthoP and VFAs, promoting the overall efficiency of phosphorus removal in EBPR.
Article
Agricultural Engineering
Shaofang Sun, Mingchang Gao, Yue Wang, Qi Qiu, Junli Han, Liping Qiu, Yan Feng
Summary: A laboratory-scale alternating anaerobic/aerobic biofilter filled with self-made steel slag media was constructed to remove and recover phosphorus from wastewater, where PAOs were successfully enriched in 30 days operation. The maximum phosphate removal efficiency was close to 80% under optimal conditions, and HAP crystals were formed inside biofilms without addition of chemical reagents.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Xiaoxia Wang, Xia Song, Dehuang Yu, Yanling Qiu, Ji Zhao
Summary: The effects of salinity on polyphosphate- or glycogen-accumulating organisms have been studied, showing that high salinity can reduce phosphorus removal efficiency and alter sludge characteristics. Certain genera that are salt-tolerant are more likely to dominate in such conditions.
Review
Environmental Sciences
Francesco Di Capua, Simona de Sario, Alberto Ferraro, Andrea Petrella, Marco Race, Francesco Pirozzi, Umberto Fratino, Danilo Spasiano
Summary: Phosphate rocks are essential for fertilizer production, but their availability is insufficient to meet agricultural demands. Wastewater treatment plants play a crucial role in phosphorus management by removing and recovering phosphorus, reducing eutrophication and meeting fertilizer demands. Recent studies have focused on improving phosphorus removal efficiency and reducing treatment costs through advancements in biological and material sciences. The development of processes for phosphorus recovery from wastewater and sludge has also been explored. This review provides updated information for the design and upgrading of wastewater treatment plants in anticipation of forthcoming regulations on phosphorus removal and recovery.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Qi Qiu, Mingchang Gao, Weiwei Zhou, Zujun Xu, Congcong Kong, Liping Qiu, Shoubin Zhang, Shaofang Sun
Summary: In this study, modified steel slag was used as a filter media in the biological aeration filter (BAF) to achieve bioinduced phosphorus crystallization process. The phosphorus removal efficiency was improved in the BAF system under alternating anaerobic-aerobic operation condition, and hydroxyapatite (HAP) crystals formation was confirmed. This finding has significant potential application for phosphorus removal and recovery in wastewater treatment.
JOURNAL OF ENVIRONMENTAL ENGINEERING
(2022)
Article
Agricultural Engineering
Hao Zhang, Wei Zhang, Shuang-Shuang Zhang, Wu-Cheng Ma, Liang Zhu, Yi-Ping Li, Yang Pan, Lin Chen
Summary: A novel process for simultaneous denitrification and phosphorus (P) recovery was proposed. The increased nitrate concentration facilitated the activity of denitrifying P removal (DPR) and stimulated P uptake and storage. The total P content in the biofilm and the P concentration in the enriched stream significantly increased. Additionally, the abundance of denitrifying polyphosphate accumulating organisms (DPAOs) increased, and the genes involved in critical functions of metabolism also increased.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Jing Huang, Yanchun Xiao, Biao Chen
Summary: In this study, immobilized biological activated carbon (IBAC) mediated with Olivibacter jilunii (strain PAO-9) was used to remove nutrients from aquaculture wastewater. The results showed that strain PAO-9 on IBAC could alter the microbial community structure and promote the removal of total phosphorus and total nitrogen. The highest removal efficiencies of total phosphorus, chemical oxygen demand, ammonia, and total nitrogen in the wastewater were 96.1%, 98.0%, 100.0%, and 97.4%, respectively, when treated by strain PAO-9 on IBAC.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Saleh Al-Haddad, Cynthia Kusin Okoro-Shekwaga, Louise Fletcher, Andrew Ross, Miller Alonso Camargo-Valero
Summary: This study investigates the enhancement of hydrogen production through the pre-treatment of inoculum to remove competing H(2-)consuming bacteria. The heat-shock pre-treatment method showed the best results, with a hydrogen yield of 191.8 mL-H-2/gVS compared to the untreated inoculum which yielded 170.91 mL-H-2/gVS. A standardized inoculum-conditioning method can help assess the biohydrogen potential of suitable feedstock and maximize hydrogen yields.
Article
Plant Sciences
Aleksandra Bogdan, Ana Alejandra Robles Aguilar, Olivier Nys, Evi Michels, Erik Meers
Summary: This study investigated the P availability of recycled phosphorus fertilizers through eleven different chemical P extractions. The results showed that STRSL and STRLQ had higher P concentrations extracted, while ASH2 and FeP had highly variable P concentrations. The plant P uptake efficiency followed the order: STRSL > STRLQ > ASH1 > FeP > ASH2.
JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
(2023)
Review
Environmental Sciences
Pedda Ghouse Peera Sheikh Kulsum, Rubina Khanam, Shreya Das, Amaresh Kumar Nayak, Filip M. G. Tack, Erik Meers, Meththika Vithanage, Mohammad Shahid, Anjani Kumar, Sukalyan Chakraborty, Tanushree Bhattacharya, Jayanta Kumar Biswas
Summary: This review focuses on the dynamics of cadmium (Cd) in paddy soil, the translocation pathways from soil to rice consumption, and the bio-accessibility of Cd in human consumption. The factors affecting Cd movement in soil and its transfer to rice grains are elucidated. Ecologically viable remediation approaches and advances in understanding Cd transport in rice plants are also highlighted.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Zaheer Ahmed Shariff, Laurent Fraikin, Aleksandra Bogdan, Angelique Leonard, Erik Meers, Andreas Pfennig
Summary: This study presents a new process called 'PULSE' for the recovery of phosphorus from sewage sludge, which can handle high metal contents. The process involves drying of sludge prior to acidic leaching to overcome challenges in solid-liquid separation and reduce material flows. The process also includes the removal of metals using reactive extraction to obtain a high-quality product. Laboratory experiments were conducted to optimize the process.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Erika De Keyser, Anke De Dobbelaere, Jan Leenknegt, Erik Meers, Erik Mathijs, Liesbet Vranken
Summary: To reduce dependency on non-renewable resources, valuable bio-based fertilizer components can be recovered through the valorization of organic waste streams. Optimization research in the fertilizer domain focuses on minimizing costs while ensuring crop nutrient uptake. This paper develops a model to minimize fertilizer costs for vegetable farmers by considering the use of bio-based fertilizer through composting and anaerobic digestion, as well as leaving crop residues on the field.
INTERNATIONAL JOURNAL OF AGRICULTURAL SUSTAINABILITY
(2023)
Article
Chemistry, Multidisciplinary
Axel Herrera, Giuliana D'Imporzano, Elisa Clagnan, Ambrogio Pigoli, Elena Bonadei, Erik Meers, Fabrizio Adani
Summary: Using membrane technology to treat manure can reduce its volume and produce a nutrient-rich concentrate, allowing the recovery of 46% of total nitrogen and 43% of total phosphorus. Compared to synthetic mineral fertilizers, this process has lower environmental impacts in 12 categories studied. The study also suggests precautions to further reduce environmental impacts and reduce energy consumption.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Environmental
Narges Mehrab, Mostafa Chorom, Mojtaba Norouzi Masir, Jayanta Kumar Biswas, Marcella Fernandes de Souza, Erik Meers
Summary: This study aims to evaluate the impact of adding the chelating agent NTA on cadmium fractions and microbial biomass in a calcareous soil contaminated with cadmium (Cd) under cultivated and uncultivated conditions subjected to soil leaching. Investigating soil-plant interactions on metal-contaminated soils with insights on microbial activity and soil toxicity perspective provides new perspectives on using metal-chelating agents for soil remediation.
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Maryam Asachi, Miller Alonso Camargo-Valero
Summary: Process Analytical Technology (PAT) is a systematic approach for monitoring process parameters and product quality attributes, which is now widely used in continuous processing of industrial products. It utilizes reliable in-line sensors, spectroscopic instruments, and Multivariate Statistical Methods (MSMs) to assess the quality of powdered and granule products. Data fusion, a data-driven approach, can improve the interpretation of complex data matrices and enhance the control of manufacturing processes. This paper reviews the current state of multi-sensors data fusion in powdered and granule manufacturing processes and discusses future perspectives in this field.
ADVANCED POWDER TECHNOLOGY
(2023)
Review
Biochemical Research Methods
Frank Delvigne, Juan A. Martinez
Summary: Automated flow cytometry (FC) has been increasingly used for bioprocess monitoring and optimization. With new physical and software interfaces, it is now more accessible to labs and industries. Reactive FC, which allows adjusting cultivation conditions based on population data, has expanded its applications to bioprocess control, stabilization of cocultures, and gene circuit characterization in synthetic and systems biology.
CURRENT OPINION IN BIOTECHNOLOGY
(2023)
Article
Agricultural Engineering
Beatrice De Vos, Marcella Fernandes de Souza, Sofie Vermeire, Pieter Vermeir, Evi Michels, Alexandra De Raeve, Erik Meers
Summary: Industrial hemp is a sustainable alternative for textile production and phytoremediation on heavy metal-contaminated soil. After demineralization and bleaching treatments, Cd and Pb concentrations in hemp fibers were below safety limits. Cd was mainly concentrated in the primary wall, while Pb could be bound to lignin and hemicellulose in the secondary wall of the fiber.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Green & Sustainable Science & Technology
Ruben Vingerhoets, Marc Spiller, Joris De Backer, Anne Adriaens, Siegfried E. Vlaeminck, E. Vlaeminck, Erik Meers
Summary: The agri-food value chain is a significant contributor to nitrogen and phosphorus emissions and their impacts. The EU's farm-to-fork strategy aims to reduce nutrient emissions and fertilizer use. Substance flow analysis is a useful method for studying the agri-food chain, but current studies lack detail in distinguishing between nodes, products, and emissions. This study presents a highly-detailed SFA for the livestock-intensive region of Flanders, Belgium, which identifies recoverable streams and calculates novel indicators. Optimized nutrient recycling could exceed the targets set by the F2F strategy. Future research should consider concentration and quality in SFAs.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Biotechnology & Applied Microbiology
Konstantinos P. Papadopoulos, Marcella Fernandes de Souza, Lorraine Archer, Ana Camila Zenteno Illanes, Ellen L. Harrison, Fiona Taylor, Matthew P. Davey, Daniela Ahuatzin Gallardo, Allan J. Komakech, Shahla Radmehr, Andre Holzer, Erik Meers, Alison G. Smith, Payam Mehrshahi
Summary: Anaerobic digestion is a sustainable solution for converting organic waste into biogas, and it can also generate nutrient-rich digestate that can be used as fertilizer. This study found that substantial amounts of vitamin B-12 can be synthesized during anaerobic digestion, and a microalgae called Chlorella vulgaris can effectively accumulate B-12 when grown in the digestate. The study also identified pH-induced ammonia toxicity as the main inhibitor for microalgae growth in the digestate, and productivity can be significantly enhanced through pH control.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Plant Sciences
Stephen P. Slocombe, Tatiana Zuniga-Burgos, Lili Chu, Payam Mehrshahi, Matthew P. Davey, Alison G. Smith, Miller Alonso Camargo-Valero, Alison Baker
Summary: Remediation of phosphate pollution using micro-algae can be enhanced by pre-conditioning the algae to induce luxury phosphorus uptake. Over-expression of the global regulator PSR1 in algae led to increased P levels and accelerated removal of phosphate from the medium. The study also revealed a feed-forward mechanism involving P-transporter genes for hyper-accumulation of P even in the presence of excess external phosphate. These findings support a bio-circular approach of nutrient recycling from wastewater back to agriculture.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Gregory Reuland, Steven Sleutel, Haichao Li, Harmen Dekker, Ivona Sigurnjak, Erik Meers
Summary: The untapped potential for carbon sequestration in agricultural soils is a cost-effective tool for mitigating climate change. Increasing soil organic matter brings various agronomic benefits and can be achieved by increasing carbon inputs and reducing carbon outputs. In this study, the addition of organic amendments resulted in significant carbon storage in the soil, with digestate showing the highest potential. Further research is needed to understand the interactions between soil and digestate.
Article
Biotechnology & Applied Microbiology
Gregoire Noel, Laurent Serteyn, Abdoul Razack Sare, Sebastien Massart, Frank Delvigne, Frederic Francis
Summary: This study investigates the gut bacteria of G. mellonella and identifies bacteria and enzymes capable of degrading polyethylene. The addition of low-density polyethylene does not significantly affect the bacterial microbiota, indicating its resilience. This study provides a basis for further research on the biodegradation of polyethylene using bacterial microbiota from insect guts.
INTERNATIONAL MICROBIOLOGY
(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)
