Article
Environmental Sciences
Marcos Filgueiras Jorge, Leonardo Duarte Batista da Silva, Jonathas Batista Goncalves Silva, Dinara Grasiela Alves, Cristina Moll Huther, Daiane Cecchin, Jose Guilherme Marinho Guerra, Luise Maria Martins dos Santos, Joao Paulo Francisco, Antonio Carlos Farias de Melo, Alexandre Lioi Nascentes, Rozileni Piont Kovsky Caletti
Summary: The present study aimed to assess the efficiency of a pilot treatment unit (PTU) for dairy cattle wastewater (DCW) in reducing physicochemical and microbiological parameters. A PTU consisting of different components including a dung pit, a septic tank, anaerobic biological filters, and constructed wetland systems was set up. The results showed that CWS 1 was unable to reduce the organic load indices but could retain fatty material and sodium, while CWS 2 exhibited reductions in nitrogenous forms and other nutrients and achieved the highest removal of sodium and fecal contamination indicators.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Georgia Altiparmaki, Petros Kourletakis, Konstantinos Moustakas, Stergios Vakalis
Summary: Dairy production facilities on Lesvos Island are crucial for the local economy, but they also generate high levels of dairy wastewater with significant pollution load. This study monitored and implemented mass and energy balances, as well as hydrothermal treatment, to examine the treatment effect on dairy wastewater.
Article
Environmental Sciences
Ali Kizgin, Danina Schmidt, Adriano Joss, Juliane Hollender, Eberhard Morgenroth, Cornelia Kienle, Miriam Langer
Summary: Wastewater treatment plants are a major source of micropollutants to surface waters. Continuous assessment of wastewater composition is currently not feasible due to the labor and cost-intensive nature of the process. This study demonstrates the potential of automated real-time biological early warning systems for wastewater surveillance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Review
Environmental Sciences
Geng Chen, Rui Bai, Yiqing Zhang, Biyi Zhao, Yong Xiao
Summary: Metagenomics is a powerful tool for assessing microbial communities in biological wastewater treatment by revealing the composition and function of microbial communities more effectively than traditional molecular methods. It can provide insights into the contribution of microbial diversity and metabolic diversity to processes such as biological removal of phosphorus and nitrogen, study of antibiotic resistance genes, and reduction of heavy metals by microbial communities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Microbiology
Anca Paulenco, Alin Cristian Nicolae Vintila, Alexandru Vlaicu, Mihaela Ciltea-Udrescu, Ana-Maria Galan
Summary: This study focuses on the treatment of dairy wastewater using mixotrophic cultivation of microalgae Nannochloris sp., with cheese whey as an organic carbon source. The samples were incubated with different amounts of cheese whey and exposed to two LED illumination schemes. After a seven-day cultivation period, significant reductions were observed in lactose, chemical oxygen demand, nitrogen, and phosphorus content.
Review
Biotechnology & Applied Microbiology
Ruyin Liu, Zong Li, Ganghua Han, Shujuan Cun, Min Yang, Xinchun Liu
Summary: Biological wastewater treatment is currently the most widely used method for wastewater treatment, and its performance depends on complex microbial communities. Recent progress has been made in understanding the ecological roles of phages in BWT systems, including interactions with hosts and the potential applications of phage-based control. Challenges and perspectives in phage ecology for future research and applications are also outlined.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Jemaa Mabrouki, Mohammed Ammar Abbassi, Besma Khiari, Salah Jellali, Antonis A. Zorpas, Mejdi Jeguirim
Summary: This article discusses the process of setting up a cost-efficient biorefinery in the Tunisian dairy industry by utilizing the production unit effluents to produce bioethanol. Through analysis of four production scenarios, it was found that the third scenario, in which a reverse osmosis procedure is added to concentrate the whey and streams are added to recycle biomass, produces the highest amount of bioethanol and generates the most profit.
Article
Engineering, Environmental
Eman S. Mansor, Eman A. Ali, A. M. Shaban
Summary: A facile method was employed to fabricate tight ultrafiltration membrane for the removal of naturally existed hazard organic substances from surface water and wastewater. By using metal organic framework MOF of cerium (Ce), a new composite membrane was developed to enhance the performance of polyethersulfone (PES) membrane. The study showed that increasing the content of Ce-AnthMOF could significantly enhance the hydrophilicity and permeability performance of the membrane. Testing the membrane for the treatment of whey wastewater showed high removal rates of various pollutants, indicating a promising approach for efficient wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Xingdong Shi, Wei Wei, Lan Wu, Bing-Jie Ni
Summary: This review comprehensively summarizes the mechanisms of ZVI for enhancing nutrients removal in biological wastewater treatment, discusses the role of ZVI in improving excess sludge reduction for methane production, and analyzes the feasibility of recovering phosphorus from anaerobic sludge digestion system through using ZVI. Additionally, knowledge gaps regarding the application of ZVI in sludge or wastewater treatment are identified to facilitate further development of ZVI-based biological technology.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Gustavo Andres Baquero-Rodriguez, Sandra Martinez, Julian Acuna, Daniel Nolasco, Diego Rosso
Summary: This study assessed the effects of elevation on the suitability of wastewater treatment process configurations and technologies. The results showed that elevation limits the selection of diffused aeration technologies and lower driving force for oxygen transfer leads to higher operating costs. The study recommends designing appropriate treatment processes for high elevation areas.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
A. Mohmmad, M. T. Hamed Mosavian, M. H. Haddad Khodaparast
Summary: This study investigated the effectiveness of the electro-Fenton process in removing COD and turbidity from dairy wastewater. Optimal operating conditions were determined using the response surface methodology. Under these conditions, COD removal efficiency was 95.8% and turbidity removal efficiency was 97.2%.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Joao F. Silva, Joao R. Silva, Andreia D. D. Santos, Carolina Vicente, Jan Dries, Luis M. M. Castro
Summary: The authors conducted a study on treating synthetic dairy wastewater using aerobic granular sludge (AGS) in a laboratory-scale continuous flow reactor (CFR) system. The system consisted of an anaerobic reactor, an aerobic reactor, and a settling sedimentation tank, with different hydraulic retention times tested over a 90-day period. The study showed that the AGS system achieved excellent removal rates for chemical oxygen demand and total carbon, exceeding 90%. The effluent met Portuguese laws for direct release into the water environment, making it a viable treatment alternative.
Article
Biology
Laura de Nies, Susheel Bhanu Busi, Benoit Josef Kunath, Patrick May, Paul Wilmes
Summary: Biological wastewater treatment plants (BWWTP) are important hotspots for the evolution and spread of antimicrobial resistance (AMR). Mobile genetic elements (MGEs) play a critical role in the dissemination of antimicrobial resistance genes (ARGs) within the BWWTP microbial community. This study analyzed meta-omic data collected over 1.5 years from a BWWTP to understand the segregation of different AMR categories in relation to MGEs. The results showed differential dissemination of AMR categories via plasmids or phages, and identified the dominant taxon Candidatus Microthrix parvicella as a major contributor to several AMR categories. The study also found AMR associated with ESKAPEE pathogens within the BWWTP, with differential contributions from MGEs. These findings provide new insights into the distribution and dissemination of AMR and are of immediate relevance to human health.
Review
Food Science & Technology
Arona Figueroa Pires, Natali Garcia Marnotes, Olga Diaz Rubio, Angel Cobos Garcia, Carlos Dias Pereira
Summary: The search for new food products that promote consumers health is ongoing, with cheese whey (CW) and second cheese whey (SCW) proving to contain potential ingredients for the development of functional food products. While whey products have gained popularity for their nutritional quality, the by-products CW and SCW are often disregarded or used for animal feed, leading to environmental concerns. More research is needed on the nutritional and functional properties of SCW in order to find ways to reuse this by-product and reduce environmental impacts.
Review
Engineering, Environmental
Shaoyi Xu, Xiaolong Wu, Huijie Lu
Summary: This review discusses the roles of nitrogen-cycling microorganisms in wastewater treatment, focusing on often overlooked microbes that are functionally important. Advancements in molecular technologies have enabled comprehensive studies on the application and potential of these microbes in nitrogen removal processes in wastewater treatment plants.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
