Article
Microbiology
Pengchong Wang, Yahui Shao, Yun Geng, Rubina Mushtaq, Wenlong Yang, Mei Li, Xiuqin Sun, Hongbo Wang, Gao Chen
Summary: Secondary effluents contain high levels of nitrogen and phosphorous, which can cause eutrophication if not treated. Microalgae have been found to effectively remove these nutrients and pollutants from wastewater, making them suitable for secondary effluent treatment.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Engineering, Environmental
Prakash Bhuyar, Marlen Trejo, Natthawud Dussadee, Yuwalee Unpaprom, Rameshprabu Ramaraj, Kanda Whangchai
Summary: The study explored the optimal conditions for cultivating Chlorella vulgaris from wastewater treatment effluent from a tilapia culture pond. It was found that fishpond wastewater is a valuable source of nutrients for algae growth and biofuel production.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Ausra Mazeikiene, Julita Sarko
Summary: After biological wastewater treatment, ammonium nitrogen, nitrate nitrogen, and phosphate phosphorus still remain in the effluent. By using selected materials as filter media, these wastewater compounds can be further removed. The tested materials are effective in treating nitrogen and phosphorus in wastewater without causing pollution.
Article
Green & Sustainable Science & Technology
Jose Carlos Alves Barroso Jr, Maria Cristina de Almeida Silva, Nestor Leonel Munoz Hoyos, Luiz Olinto Monteggia
Summary: The discharge of partially treated effluents can have an impact on water quality and living organisms, particularly through eutrophication. This study evaluated the removal and recovery of nutrients from effluent treatment using high rate microalgae ponds and treatment ponds with macrophytes. The results showed that a Hydraulic Detention Time of 4.1 days in the warm period of the series system resulted in low concentrations of phosphorus and ammonia nitrogen, and good nutrient recovery.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Cristina Agabo-Garcia, Guillermo Repetto, Mha Albqmi, Gassan Hodaifa
Summary: Different eco-friendly processes were studied to treat olive mill wastewater for the European 2024 zero-waste plan. The application of advanced oxidation processes, flocculation, and filtration proved to be effective in obtaining high-quality regenerated water. However, the increase in total iron content resulted in toxicity, which was resolved through subsequent flocculation and filtration steps. The optimized process achieved regenerated water suitable for irrigation with improved quality parameters.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Sandra Lage, Andrea Toffolo, Francesco G. Gentili
Summary: Microalgal-based wastewater treatment and CO2 sequestration represent a low-cost, eco-friendly, and effective method for removing pollutants and reducing greenhouse gas emissions, supporting a circular economy. Factors affecting microalgae biomass production under outdoor cultivation impact profitability and sustainability, emphasizing the importance of considering both abiotic and biotic factors in the process.
Article
Environmental Sciences
Mengting Li, Shuhan Ge, Jian Zhang, Shubiao Wu, Haiming Wu, Lin-Lan Zhuang
Summary: The study demonstrated that an AP-CW system can effectively remove total nitrogen and total phosphorus from water without the need for carbon addition. The addition of microalgae in constructed wetlands can influence microbial communities and effluent quality, as well as increase the absolute abundance of denitrifying bacteria in the denitrification area.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Yanyan Su
Summary: Wastewater is not only a waste but also a source of energy and resources. Microalgae-based wastewater treatment is gaining attention for effectively redirecting nutrients from wastewater to biomass accumulation. Furthermore, microalgae are utilized in human consumption and animal feed due to their high nutritional value.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
E. Segredo-Morales, E. Gonzalez, C. Gonzalez-Martin, L. Vera
Summary: This study assessed the effects of operating conditions on a microalgal-bacterial membrane photobioreactor (MPBR) in wastewater treatment. The results showed that selecting longer solids retention times (SRTs) was crucial for optimal community structure and process performance, as well as for minimizing membrane fouling rates.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Environmental Sciences
Xinyi Zou, Chongjun Chen, Changhong Wang, Qun Zhang, Zhuowei Yu, Haiping Wu, Chao Zhuo, Tian C. Zhang
Summary: This article presents the principle, mechanism and feasibility of using the combined process of electrochemical reduction and anammox for treatment of nitrate-rich wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Zi-Yan Yang, Feng Gao, Jun-Zhi Liu, Jin-Sheng Yang, Mei Liu, Ya-Ming Ge, Dong-Zhi Chen, Jian-Meng Chen
Summary: Saline wastewater was found to improve the sedimentation and lipid production of freshwater microalgae. A salinity of 0.5% or above effectively promoted the settling of microalgae and reduced algal biomass in the effluent. The mechanism behind this improvement involved changes in zeta potential, cell particle size, and extracellular polymeric substance synthesis, which varied with the influent salinity.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Chemical
Song Wang, Franziska Ortiz Tena, Rohit Dey, Claudia Thomsen, Christian Steinweg, Dennis Kraemer, Amit Dan Grossman, Yonas Zeslase Belete, Roy Bernstein, Amit Gross, Stefan Leu, Sammy Boussiba, Laurenz Thomsen, Clemens Posten
Summary: This study investigated the application of microalgae in nutrient removal from wastewater and biofouling control. Results showed high efficiency of microalgae in NH4+-N removal, while fouling was mainly caused by extracellular organic matter and cellular debris. By controlling the TOC content in wastewater and implementing timely backflushing and aeration, the occurrence of biofouling can be effectively reduced.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Fisheries
R. Vinothkumar, Jaffer Y. Dar, V. S. Bharti, Arjun Singh, A. Vennila, Irfan A. Bhat, P. K. Pandey
Summary: The study found that HNAD bacterial strains in the effluent channel showed superior nitrate removal activity and functional diversity compared to those in the shrimp pond. These results are important for understanding and cultivating HNAD bacteria for successful transformation of nitrogenous waste in coastal aquaculture and wastewater treatment systems.
Article
Engineering, Environmental
Yanni Geng, Dan Cui, Liming Yang, Zhensheng Xiong, Spyros G. Pavlostathis, Penghui Shao, Yakun Zhang, Xubiao Luo, Shenglian Luo
Summary: A study found that the nitrogen removal efficiency in rare earth mine effluent is low, with limited microalgae biomass. However, when carbonate is added, Chlorococcum sp. shows higher nitrogen removal rate and biomass yield, along with high lipid content. The extracellular polymeric substance released by microalgae contributes to easier resource harvest.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Carlos Sauco, Raul Cano, David Marin, Enrique Lara, Frank Rogalla, Zouhayr Arbib
Summary: The study compared a conventional wastewater treatment plant and a hybrid alternative treatment plant for real urban wastewater from the city of Almeria, Spain. The hybrid system showed higher removal efficiencies for COD, TN, TP, and TSS, as well as high disinfection rates for total coliforms and E.Coli. Additionally, the energy demand of the hybrid system was significantly lower than that of a conventional activated sludge plant.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
