Article
Agricultural Engineering
Min Ye, Aijun Zhu, Borchen Sun, Yu Qin, Yu-You Li
Summary: This study investigated the treatment of protein-rich dairy product wastewater in an anaerobic membrane bioreactor. The results showed that substrate dilution is essential in overcoming ammonia inhibition. Moreover, ammonia inhibition resulted in changes in the relative abundance of certain bacteria in the wastewater.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
William Michelon, Isabella Dai Pra Zuchi, Jacqueline Graff Reis, Alexandre Matthiensen, Aline Viancelli, Ariadne Cristiane Cabral da Cruz, Izabella Thais Silva, Gislaine Fongaro, Hugo Moreira Soares
Summary: Phycoremediation of swine wastewater using microalgae has been shown to efficiently remove nutrients and contaminants, while the extracts from the biomass demonstrated strong virucidal effects against HSV-1 and HAdV-5 viruses. The results indicate that microalgae could be a promising source of biomass for the development of alternative antiviral compounds.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Nian Liu, Zhen Sun, Huan Zhang, Lasse Hyldgaard Klausen, Ryu Moonhee, Shifei Kang
Summary: Bacterial and photocatalysis techniques are widely used for the remediation of ammonia nitrogen wastewater. While traditional microbial methods are proven useful, there is a need for more efficient and controllable treatment methods to address the diverse cases of ammonia nitrogen pollution. Bacterial treatment relies on ammonia nitrogen oxidation-reduction by nitrifying and denitrifying bacteria, but these reactions are slow and uncontrolled. Photocatalysis, on the other hand, has advantages such as low temperature reaction and long life, but cannot perform multiple complex biochemical reactions. This review highlights recent achievements, key problems, and future directions for remediation of high-ammonia-nitrogen wastewater using bacterial treatment and photocatalysis techniques, including the potential of combining bacterial-photocatalysis techniques.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Agricultural Engineering
Jingxuan Dai, Mingmin Zheng, Yongjin He, Youcai Zhou, Mingzi Wang, Bilian Chen
Summary: This study systematically investigated the tolerance mechanism of the indigenous Chlorella vulgaris MBFJNU-1 towards free ammonia during swine wastewater treatment. By comparing it with C. vulgaris UETX395, the results showed that C. vulgaris MBFJNU-1 exhibited higher resistance to high levels of free ammonia and swine wastewater. Transcriptomic analysis identified key pathways related to arginine biosynthesis, electron generation, ATP synthesis in chloroplasts, and glutathione synthesis in C. vulgaris MBFJNU-1. The findings provide valuable insights for microalgal biotechnology in treating swine wastewater and high free ammonia wastewater.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yafan Cai, Zehui Zheng, Xiaofen Wang
Summary: This review discusses the effects of toxicants originating from waste treatment on anaerobic digestion, particularly focusing on the activity of methanogenic archaea, the succession of MA species, and the methanogenic pathways. Under the pressure of toxicants, MA activity decreases, leading to succession among methanogens and changes in methanogenic pathways, ultimately affecting the performance of anaerobic digestion.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
Mariella Belen Galeano, Mira Sulonen, Zainab Ul, Mireia Baeza, Juan Antonio Baeza, Albert Guisasola
Summary: Due to the anticipated rise in demand for ammonia, there has been increased research on viable methods for its recovery, with a focus on reducing the high energy demand associated with traditional ammonia production. Bioelectrochemical systems (BESs) offer a promising alternative for ammonia recovery, with lower energy demand compared to other methods at the lab-scale. This paper explores the fundamentals and opportunities of bioelectrochemical ammonia recovery in various BES devices and discusses the challenges in scaling up for industrial adoption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Huanjun Bao, Meirong Wu, Xiangsong Meng, Haisheng Han, Chenyang Zhang, Wei Sun
Summary: With the rapid industrialization and urbanization processes, wastewater pollution has become a severe issue threatening human health and the environment. High-salinity organic ammonia-nitrogen wastewater, generated from various sources such as smelting, pharmaceuticals, landfill leachate, and aquaculture, poses significant risks to the environment. This article presents the sources, characteristics, and hazards of this type of wastewater, investigates the electrochemical oxidation (EO) technology for its treatment, including its basic principles and mechanisms. Additionally, the influencing factors of EO are analyzed, and conclusions and future prospects for this technology are provided.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
In Hwan Shin, Jiyeol Im, SeongJoo Kang, Sang-hun Lee, Ji Won Lee, Kyungik Gil
Summary: The study proposed a unique membrane bioreactor system with sulfonate membrane for simultaneous removal of organic and nitrogen in wastewater. This system consists of two reactors, A and B, with reactor A in anoxic condition and reactor B in aerobic condition. High nitrogen fluxes observed in the system indicated high ion diffusivity, leading to almost complete nitrogen removal efficiency achieved in the batch system. Moreover, no severe nitrate accumulation problem was observed in reactor B, showing the potential for low operation costs and high removal efficiencies of ammonia nitrogen in this unique membrane system.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Junyuan Guo, Cheng Chen, Wenjing Chen, Jianying Jiang, Bozhi Chen, Fei Zheng
Summary: This study successfully utilized chitosan-sodium alginate composite carrier to prepare immobilized bacteria pellets, achieving a 96.5% removal of ammonia nitrogen from ADSW with a main mechanism of both adsorption and microbial action. Compared to other carriers, the immobilized bacteria pellets using chitosan-sodium alginate showed superior efficiency in removing ammonia nitrogen.
Review
Environmental Sciences
Min Ye, Yu-You Li
Summary: This review comprehensively summarizes the characteristics of dairy wastewater and reveals the mechanisms and impacts of three critical issues in anaerobic treatment. It evaluates current remedial strategies and the application of anaerobic membrane bioreactors. The review also discusses the use of nitrogen-removed effluent return and trace metal addition to improve the treatment efficiency and stability of dairy wastewater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jiawei Fan, Haixia Wu, Ruoyu Liu, Liyuan Meng, Zhi Fang, Feng Liu, Yanhua Xu
Summary: The study demonstrated the effectiveness of using non-thermal plasma combined with zeolites for the removal of ammonia nitrogen from wastewater. The synergistic system showed a higher removal efficiency compared to using zeolites or discharge plasma alone, with key factors for optimal removal including higher applied voltage, lower initial ammonia nitrogen concentration, and weak acidic conditions. The characterization of zeolites post-reaction confirmed the stability and applicability of the plasma/zeolites system for treatment of low-concentration ammonia nitrogen wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Shuju Fang, Gufeng Li, Hongyu Shi, Junxiu Ye, Hongbin Wang, Xuemei Ding, Lijun Luo, Guizhen Li, Min Yang
Summary: A low-cost functionalization method was used to prepare an efficient adsorbent for ammonia nitrogen from diatomite. The optimized conditions included modification with H2SO4, NaCl, and calcination, resulting in excellent adsorption performance of the functionalized diatomite (DTCA-Na). The adsorption process of ammonia nitrogen followed pseudo-first-order kinetics and Langmuir isothermal model. The removal efficiency of ammonia nitrogen remained above 80% even after multiple adsorption-desorption experiments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agricultural Engineering
Helga Cristina Fuhrmann Dinnebier, Alexandre Matthiensen, William Michelon, Deisi Cristina Tapparo, Tauani Gabriela Fonseca, Rafael Favretto, Ricardo Luis Radis Steinmetz, Helen Treichel, Fabiane Goldschmidt Antes, Airton Kunz
Summary: This study found that the strain Chlorella sorokiniana (LBA#39) was able to tolerate high concentrations of ammonia nitrogen at neutral pH, showing good biomass productivity and nutrient removal capabilities, providing a sustainable approach for integrating raw materials into agricultural industrial facilities and improving biogas production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Hao-Tian Wang, Xue-Ling Li, Xin-Shi Wu, Jun Wan, Chun-Xue Zhang, Bo Sun, Hua-Zhang Zhao
Summary: A novel photochemical strategy utilizing solar irradiation was designed to remove inorganic ammonia nitrogen from wastewater. The photo-Fe (or Mn)eO(2) system was built to effectively remove ammonia-nitrogen from its aqueous solution. This cost-efficient and environmentally-friendly strategy does not produce NOx, providing a new possibility for wastewater treatment.
Article
Multidisciplinary Sciences
Frederik Rask Dalby, Marcell Nikolausz, Michael Jorgen Hansen, Anders Feilberg
Summary: Livestock manure emits sulfur compounds and methane, which can be efficiently mitigated by tannic acid-sodium fluoride inhibitor (TA-NaF) and acidification. TA-NaF treatment mainly affects hydrogenotrophic methanogenesis, while acidification inhibits sulfate reduction activity. TA-NaF does not significantly impact methanogenic community structure, but does influence sulfur transformation pathways.
