Article
Green & Sustainable Science & Technology
Zhenguo Chen, Yongxing Chen, Xuwen Zheng, Xiaojun Wang, Yongqing Wang, Jing Chen
Summary: Two processes, complete nitritation-denitrification and partial nitritation-anammox, were successfully developed and compared for long-term nitrogen removal from iron oxide wastewater. The total chemical cost was lower in the partial nitritation-anammox process compared to the complete nitritation-denitrification process. Both processes effectively and reliably achieved nitrogen removal from iron oxide wastewater for sustainable development.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Qiongpeng Dan, Rui Du, Tong Wang, Tiantian Sun, Honggui Han, Xiaorong Zhu, Xiyao Li, Qiong Zhang, Yongzhen Peng
Summary: A hybrid system of anammox combined with heterotrophic endogenous metabolisms was developed in a single-stage bioreactor to treat real domestic wastewater. Nitrogen removal was achieved at a low carbon to nitrogen ratio and maintained under an extremely low ratio. The coexistence and enrichment of different bacteria contributed to the co-metabolism of carbon, nitrogen, and phosphorus.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
S. K. Tellez-Perez, S. Wyffels, H. KleinJan, C. Meunier, R. Gerards
Summary: Partial nitritation-anammox process was successfully conducted in a continuous fed Sequencing Batch Reactor (cf-SBR) to remove nitrogen from anaerobic effluent of the potato industry at different loading rates, with nitrogen removal and ammonia oxidation reaching 62% and 74% respectively at the highest loading rate. The study also observed improvements in sludge characteristics and confirmed the presence of anammox bacteria through molecular analysis. The cf-SBR demonstrated its capability as a suitable and feasible technology for advanced nitrogen removal under partial nitritation and anammox conditions.
Article
Agricultural Engineering
Eli Hendrik Sanjaya, Yujie Chen, Yan Guo, Jiang Wu, Hong Chen, Mohd Fadhil Md Din, Yu-You Li
Summary: The study successfully implemented the SNADCO method in an air-lift moving bed biofilm reactor for treating digested fish processing wastewater, showing advantages in handling high ammonia concentration and organic compounds. The nitritation and anammox route were predominant in nitrogen removal, while COD oxidation and microbe proliferation played the main role in COD removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Dheeraja Cheenakula, Svea Paulsen, Fabian Ott, Markus Groemping
Summary: The main objective of this study was to investigate the feasibility of using deammonifying sludge from the side stream of a municipal wastewater treatment plant in Kaster, Germany. The study showed that different operational factors like temperature, pH value, and COD/N ratio significantly influenced the nitrogen removal efficiency. The findings of this study provide valuable insights for the implementation of partial nitritation/anammox (PN/A) process at wastewater treatment plants globally.
WATER AND ENVIRONMENT JOURNAL
(2023)
Article
Engineering, Environmental
Zixiao Wang, Ao Li, Shangyi Shu, Yunpeng Shi, Tingting Qian, Bin Fan
Summary: This study used four reactors to investigate the impact of flushed toilet water (AFTW) on partial nitritation/anammox (PN/A) in an OSSWT system. AFTW affects the endpoint of PN by impacting total alkalinity (TA). The type and proportion of activated sludge are affected by AFTW; high AFTW is not conducive to the growth of attached sludge. Increasing AFTW reduces Nitrosamonas abundance when AFTW is low, but this effect reverses when AFTW is high.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Kai Lv, Xianming Shao, Dangcong Peng, Yun Han, Lifang Yu
Summary: The study demonstrated the feasibility of using SMBBR for low-strength ammonium wastewater treatment and investigated the influence of operating conditions and microbial competitions on NOB suppression. The results showed that stable nitrogen removal through PN/A could be achieved by adjusting the HRT and DO concentration, and NOB activity could be effectively controlled through competition with AOB and AMX.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yongxing Chen, Haochuan Chen, Zhenguo Chen, Zijian Zhu, Xiaojun Wang
Summary: The proposed one-stage autotrophic nitrogen removal reactor (SABF) is an efficient and economical method for urea wastewater treatment, which can simultaneously achieve urea hydrolysis, partial nitritation, and anammox. It has low operational cost and high removal efficiency, and can enable the reuse of urea wastewater.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Feng Zhou, Wan-Zi Xiao, Kai-Yuan Zhou, Jin-Long Zhuang, Xu Zhang, Yong-Di Liu, Bing-Jie Ni, James P. Shapleigh, Min Zhou, Xi-Zi Luo, Wei Li
Summary: This study developed a novel one-stage nitrogen removal method that integrates partial nitrification, anammox, and denitratation for the treatment of low C/N wastewater. The expression of key genes for nitritation, anammox, and denitratation increased as reactor performance improved. Analysis of the metagenome revealed the dominant genera of ammonium-oxidizing bacteria, anammox bacteria, and denitratation bacteria. Mass balance confirmed that anammox was the dominant nitrogen removal pathway.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Hao Su, Dachao Zhang, Philip Antwi, Longwen Xiao, Xiaoyu Deng, Zuwen Liu, Bei Long, Miao Shi, Michael J. Manefield, Huu Hao Ngo
Summary: The study found that the addition of Ce(III) significantly affects the ammonia oxidation rate, with the potential to improve the efficiency of the partial-nitritation process within a certain range of Ce(III) dosage, but excessive Ce(III) addition can have a negative impact. Microbes effectively remove Ce(III) using EPS, as confirmed through various analytical methods showing Ce(III) deposits within the produced EPS. Specific organic functional groups and Fulvic acid were identified as potentially promoting the performance of the PN process under Ce(III) dosage.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Agricultural Engineering
Yunzhi Qian, Yanmei Ding, Huaji Ma, Yongzhi Chi, Hongying Yuan, Yu-You Li, Sufeng Tian, Bowen Zhang
Summary: A novel internal circulation contact oxidation membrane bioreactor (ICCOMBR) was constructed to investigate a three steps startup strategy of single-stage partial nitritation-anammox (SPNA) system. The SPNA system achieved stable nitrite accumulation rate and high total nitrogen removal efficiencies.
BIORESOURCE TECHNOLOGY
(2021)
Review
Environmental Sciences
Hussein E. Al-Hazmi, Xi Lu, Dominika Grubba, Joanna Majtacz, Michael Badawi, Jacek Makinia
Summary: This review highlights the importance of understanding microbial metabolism in anammox-mediated systems and their potential applications in sustainable nitrogen removal from wastewater. Various processes, including PN-A, SNAD, PD-A, and DAMO-A, have shown efficient N removal in different wastewater treatment scenarios. The review also discusses the production of N2O in anammox-based processes and how it relates to certain bacteria. Additionally, mathematical models and promising NO3- reduction technologies are discussed. Overall, this review provides valuable insights into sustainable N removal in anammox-mediated systems, encouraging further research in this field.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Alexander Schopf, Kathlyn M. Kirkwood, Alexandra Tsitouras, Robert Delatolla
Summary: The study demonstrates that a moving bed biofilm reactor system operating under a novel design strategy can achieve robust partial nitritation and oxidation of ammonia without the need for intense operational measures. By suppressing the activity of nitrite oxidizing bacteria (NOB) rather than reducing their population, the system effectively promotes nitritation and oxidation processes.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Chihao Lin, Xiangmin Xiao, Yu-You Li, Jianyong Liu
Summary: Anaerobic ammonium oxidation (anammox) technology is seen as a promising alternative for wastewater treatment, with partial denitrification anammox (PDA) and partial nitritation anammox (PNA) being the mainstream processes. Comprehensive evaluation of their economic and environmental benefits is essential. The study proposed and analyzed two plant-wide processes, and showed that high rate activated sludge-PNA (HRAS-PNA) was more energy-efficient and cost-effective compared to chemically enhanced primary treatment-PDA (CEPT-PDA), with a significant decrease in total environmental impacts.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Environmental Sciences
Haoyuan Wu, Guotian Wang, Lei Li, Zhenchao Gao, Mengyu Wang, Jin Wang, Zhongguo Zhang, Aimin Wang, Xiujun Tian, Jiuyi Li
Summary: Due to the presence of high levels of organics and nitrogen in vacuum toilet wastewater (VTW) from high-speed trains, onsite pretreatment is necessary for discharging VTW into municipal sewers. A partial nitritation process was established in a sequential batch reactor to efficiently remove nitrogen and produce effluent suitable for anaerobic ammonia oxidation. Despite the fluctuation of COD and nitrogen, the organics for nitrogen removal stabilized at 1.97 +/- 0.18 mg COD mg N-1 removed, and the effluent NO2--N/NH4+-N ratios were maintained at 1.26 +/- 0.13. The nitrogen and COD removal efficiencies were 31.8 +/- 3.5% and 65.2 +/- 5.3% for real VTW, respectively. Microbial analysis showed Nitrosomonas as the dominant autotrophic ammonium-oxidizing bacterial genus, while nitrite-oxidizing bacteria Nitrolancea was inhibited.
Article
Engineering, Environmental
Barbara Munoz-Palazon, Alejandro Rodriguez-Sanchez, Miguel Hurtado-Martinez, Jesus Gonzalez-Lopez, Philipp Pfetzing, Alejandro Gonzalez-Martinez
JOURNAL OF WATER PROCESS ENGINEERING
(2020)
Article
Environmental Sciences
Cristina Garcia-Fontana, Alejandro Rodriguez-Sanchez, Barbara Munoz-Palazon, Alejandro Gonzalez-Martinez, Maria Vela-Cano, Jesus Gonzalez-Lopez
Article
Environmental Sciences
A. Gonzalez-Martinez, B. Munoz-Palazon, A. Kruglova, M. Vilpanen, A. Kuokkanen, A. Mikola, M. Heinonen
Summary: The study successfully tested the adaptability of ANITA (TM) Mox technology to high ammonium loads at a wastewater treatment plant in Finland, while controlling nitrite concentration and NO3--N accumulation. Microbial community analysis revealed the diversity and dominant species under this operational condition.
Article
Environmental Sciences
Barbara Munoz-Palazon, Alejandro Rodriguez-Sanchez, Miguel Hurtado-Martinez, Jesus Gonzalez-Lopez, Riku Vahala, Alejandro Gonzalez-Martinez
Summary: The study suggests that denitrifying granular sludge technology is a viable solution for treating nitrogen-contaminated groundwater, with influent organic matter playing a crucial role in shaping microbial communities and overall system efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Miguel Hurtado-Martinez, Barbara Munoz-Palazon, Alejandro Gonzalez-Martinez, Maximino Manzanera, Jesus Gonzalez-Lopez
Summary: Inoculating denitrifying Pseudomonas strains carrying the nosZ gene into granular sequencing batch reactors enables the formation of stable granules, efficient removal of nitrate, and transformation of nitrate into nitrogen gas, which is of significant environmental interest to prevent the generation of nitrous oxide.
Article
Engineering, Environmental
Miguel Hurtado-Martinez, Barbara Munoz-Palazon, Virginia Maria Robles-Arenas, Alejandro Gonzalez-Martinez, Jesus Gonzalez-Lopez
Summary: A novel modification of aerobic granular sludge technology was developed in this research for the treatment of nitrate-polluted groundwater, achieving successful denitrification process. The study demonstrated high diversity and evenness in both prokaryotic and eukaryotic communities.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Barbara Munoz-Palazon, Aurora Rosa-Masegosa, Miguel Hurtado-Martinez, Alejandro Rodriguez-Sanchez, Alexander Link, Ramiro Vilchez-Vargas, Alejandro Gonzalez-Martinez, Jesus Gonzalez Lopez
Summary: Under the influence of pharmaceutical compounds, the aerobic granular sludge system experienced an acclimatization period and successfully improved the removal efficiency of COD and TN, while also degrading some of the pharmaceutical compounds. The system demonstrated an adaptability to treating toxic substances in wastewater.
Review
Environmental Sciences
Aurora Rosa-Masegosa, Barbara Munoz-Palazon, Alejandro Gonzalez-Martinez, Massimiliano Fenice, Susanna Gorrasi, Jesus Gonzalez-Lopez
Summary: The technology of aerobic granular sludge shows potential in wastewater treatment, but utilizing sequential batch reactors presents limitations. To improve efficiency, focus has shifted towards continuous flow reactors, yet satisfactory results have not been achieved.
Article
Environmental Sciences
Susanna Gorrasi, Marcella Pasqualetti, Andrea Franzetti, Alejandro Gonzalez-Martinez, Jesus Gonzalez-Lopez, Barbara Munoz-Palazon, Massimiliano Fenice
Summary: Enterobacteriaceae is consistently found in the seawaters of a saline environment, with higher abundance in the sea than in ponds possibly due to anthropic impact. The key genus (Escherichia/Shigella) and OTU 5 of Enterobacteriaceae community also follow this trend, with various factors influencing their abundance, such as salinity and seasonal variations. Despite not thriving in the saline environment, Enterobacteriaceae may still serve as a potential reservoir for bacteria with significant health implications.
Article
Soil Science
A. Rodriguez-Sanchez, A. Tomasek, S. McMillan, S. Yufra, M. Yupanqui, R. Rondon, L. Hoagland
Summary: The study characterized soil fungal communities on 12 farms near Arequipa, Peru, finding a majority of saprotrophs with a substantial proportion of pathotrophs influenced by soil pH, organic matter, nitrogen, phosphorous, cobalt, and nickel. Pathogenic phylotypes differed between river and canal farms, highlighting the need for site-specific intervention strategies. Age was positively correlated with a decline in saprotrophs and increase in pathotrophs, emphasizing the importance of replenishing soil organic matter. Correlations between individual phylotypes could mediate disease outbreaks, suggesting the need for further exploration in future studies.
APPLIED SOIL ECOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Aurora Rosa-Masegosa, Lizandra Perez-Bou, Barbara Munoz-Palazon, Antonio Monteoliva-Garcia, Alejandro Gonzalez-Martinez, Jesus Gonzalez-Lopez, David Correa-Galeote
Summary: This study evaluated the size, structure, and dynamics of microbial communities in AGS-SBRs fed with different concentrations of amino acids. The addition of amino acids had a weak impact on the total abundances of microbial communities but significantly modulated the dominant bacterial structures. The highest concentration of amino acids under the shock strategy led to a severe change in the microbial community structure.
Article
Engineering, Environmental
Barbara Munoz-Palazon, Aurora Rosa-Masegosa, Ramiro Vilchez-Vargas, Alexander Link, Susanna Gorrasi, Jesus Gonzalez-Lopez, Alejandro Gonzalez-Martinez
Summary: This study investigated the effect of low and high temperatures on the removal of pharmaceuticals in aerobic granular sludge reactors. The results showed that pharmaceutical removal was more efficient at high temperature, while oscillations were observed at low temperature. Naproxen was the most difficult compound to degrade, and trimethoprim had the highest removal ratios for both temperatures. The microbial community composition was highly dependent on the operational temperature, with Flavobacterium and Leadbetterella being detected in reactors with drug amendment. The metabolically active bacterial community had lower diversity compared to the total community. The statistical analysis confirmed that temperature had a more decisive impact on the microbial community than pharmaceutical treatment.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Barbara Munoz-Palazon, Anna Mikola, Aurora Rosa-Masegosa, Ramiro Vilchez-Vargas, Alexander Link, Jesus Gonzalez-Lopez, Alejandro Gonzalez-Martinez
Summary: The aerobic granular biofilm process demonstrated efficient nitrate removal at low temperatures, with stable granule structure and high removal rates. Cold-adapted microorganisms and stable fungal communities were found in the granules. This biological technology is of great significance for nitrate treatment in oligotrophic water bodies.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
