Article
Engineering, Environmental
Rafaely X. de S. Furtado, Carolina A. Sabatini, Isabel K. Sakamoto, Marcelo Zaiat, Eduardo B. Azevedo
Summary: Perfluorooctane sulfonic acid (PFOS) is widely used in the textile industry as a surfactant and can be found in various products. This study investigated the degradation of PFOS in anaerobic conditions using simulated domestic sewage. After 10 days, a 24% degradation of PFOS was achieved. Biodegradation products were identified, including a new compound: C4F9CHO (2,2,3,3,4,4,5,5,5-nonafluoropentanal). The biodegradation products showed increased lipophilicities and ecotoxicities compared to PFOS.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Environmental
Wen Li, Lirong Zhu, Baocun Wu, Yongli Liu, Jinze Li, Linji Xu, Xiaoliu Huangfu, Dezhi Shi, Li Gu, Cong Chen
Summary: This study adopted a side-stream thermophilic anaerobic digestion (STA) strategy to improve the efficiency and stability of a digestive system. The results showed that STA strategy not only increased methane production and system stability, but also optimized organic metabolism patterns and promoted methane production pathways through enhanced enzyme activity.
Article
Engineering, Environmental
Thiago A. Nascimento, Mar Pena Miranda
Summary: Original experiments of wastewater ultrafiltration were conducted based on the concept of direct membrane filtration (DMF). Results showed that proper gas scouring velocity and chemical cleaning methods can maintain membrane pressure and ensure the recovery of high concentrated solids. The research evaluated different fouling control strategies and their effects on concentrated solids recovery.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
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
Biotechnology & Applied Microbiology
Hyungmin Choi, Jinsu Kim, Changsoo Lee
Summary: This study found that co-digestion of TMAH wastewater with EL wastewater significantly enhances methane production rate and yield, showing a synergistic effect, which could provide a cost-effective option for wastewater treatment in the semiconductor and TFT-LCD industries.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Agricultural Engineering
Chunxing Li, Ruming Wang, Xiaoyong Yang, Mingdian Zhou, Xiaofang Pan, Guanjing Cai, Yifeng Zhang, Gefu Zhu
Summary: The study successfully operated methanogenic fermentation under acidic conditions to treat wastewater containing oxytetracycline. Addition of oxytetracycline had little impact on methane generation but significantly influenced the microbial communities. Methanosaeta showed the highest tolerance to oxytetracycline under acidic conditions.
BIORESOURCE TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Liu Cao, Chris D. Cox, Qiang He
Summary: This study identified the important role of Syntrophobacter in syntrophic propionate conversion, while the methanogen partners lacked consistency. Propionate conversion was mainly achieved through the transformation of propionate into acetate and hydrogen.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Agricultural Engineering
Su In Kim, Chayanee Chairattanawat, Eunji Kim, Seokhwan Hwang
Summary: Anaerobic digestion of protein-rich wastes is challenging due to the production of ammonia and hydrogen sulfide. The choice of inoculum significantly affects the maximum methane production rate.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Joonyeob Lee, Eunji Kim, Seokhwan Hwang
Summary: This study found that sodium-ion and ammonia have significant inhibitory effects on acetate-utilizing methanogens, and the impact of inhibition varies depending on the initial methanogen community structures. These inhibitory conditions determine the succession of methanogens in anaerobic digestion processes.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Qiuxian Qi, Chen Sun, Chicaiza Cristhian, Tengyu Zhang, Jingxin Zhang, Hailin Tian, Yiliang He, Yen Wah Tong
Summary: This study evaluated the performance of different biochar-amended anaerobic digestion systems and found that biochar produced at high gasification temperature can promote methane production and improve digestion performance. The results indicate that the surface functional groups of biochar have a significant impact on anaerobic digestion performance at different temperatures.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Rodrigo B. Carneiro, Gisele M. Gomes, Marcelo Zaiat, Alvaro J. Santos-Neto
Summary: This study investigates the impact of phase separation on the performance of anaerobic digestion (AD) by operating different configurations of anaerobic fixed bed biofilm reactors. The results show that feeding the effluent stream from the acidogenic reactor to the methanogenic reactor improves system start-up, alkalinity generation, and biomethane production. The COD removal kinetics is also enhanced in the sequential two-phase system. Hydrogenotrophic methanogenesis is the predominant pathway in the methanogenic reactor, while the Methanosaeta-driven acetoclastic pathway predominates in the acidogenic reactor. The higher diversity of bacteria and archaea in the methanogenic reactor indicates a better balance between volatile organic acid degradation and methane generation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Agricultural Engineering
Natalia Rey-Martinez, Aloia Barreiro-Lopez, Albert Guisasola, Juan A. Baeza
Summary: This study compared two high-rate systems for organic matter removal in wastewater treatment, finding that HRAS showed higher COD removal efficiencies and better energy recovery, while HRSBR was better at avoiding undesired nitrification and had higher energy recovery per unit of COD degraded.
BIOMASS & BIOENERGY
(2021)
Article
Environmental Sciences
Simon Mills, Anna Christine Trego, John Ward, Juan Castilla-Archilla, Johannes Hertel, Ines Thiele, Piet N. L. Lens, Umer Zeeshan Ijaz, Gavin Collins
Summary: This study utilized laboratory-scale bioreactors to investigate the formation, maturation, disintegration, and re-formation of new granules. The findings highlighted distinct morphological features of granule sizes and biofilm development stages, which are important for maximizing bioreactor performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Alessandra Giordani, Gunther Brucha, Kyem A. Santos, Karina Rojas, Elize Hayashi, M. Madalena S. Alves, Giovana Tommaso
Summary: This study examined the impact of increasing organic loading rate on the microbial community and performance of the HABR during simulated dairy wastewater treatment. The system could maintain high COD removal efficiency and increase methane production, with most of the organic matter removal occurring in compartments C1 and C2. The dominant species in the HABR were acetoclastic methanogen Methanosaeta and hydrogenotrophic methanogen Methanobacterium, while species capable of syntrophic partnership with methanogens were also identified.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Agricultural Engineering
Dong-Mei Zhang, Qing Teng, Dongqing Zhang, Ghulam Jilani, Wei-Ming Ken, Zhi-Peng Yang, Tajwar Alam, Muhammad Ikram, Zahid Iqbal
Summary: The study investigated the impacts of magnesium-ammonium-phosphate (MAP) precipitation on the performance and microbial dynamics in an anaerobic continuously stirred tank reactor (CSTR) coupled with sequencing batch reactor (SBR) for swine wastewater treatment. Results showed an overall higher removal efficiency for COD, NH4+ and PO43- with MAP precipitation. The increase in microbial community richness and diversity with MAP was conducive to nitrogen and phosphorus removal, as well as biogas production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Rhuana Valdetario Medice, Robson Jose de Cassia Franco Afonso, Marys Lene Braga Almeida, Sergio Francisco de Aquino, Marcelo Libanio
Summary: This study evaluated the antimicrobial activity and toxicity of the chlorination by-products of norfloxacin on a bench scale. Results showed that the by-products lost antibacterial activity against E.coli and exhibited higher toxicity than pure norfloxacin in acute toxicity tests using Artemia salina microcrustaceans.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Diego Roberto Sousa Lima, Aline Gomes de Oliveira Paranhos, Oscar Fernando Herrera Adarme, Bruno Eduardo Lobo Baeta, Leandro Vinicius Alves Gurgel, Alexandre Soares dos Santos, Silvana de Queiroz Silva, Sergio Francisco de Aquino
Summary: This study evaluated the energy potential of biogas production from anaerobic digestion of sugarcane bagasse residues pre-treated with ozone for 2G ethanol production. It was found that mild ozonation conditions maximized ethanol production, with surplus energy generation covering the energy costs involved in the process. Combination of ozone treatment and alkaline extraction under suitable conditions also increased ethanol production and process sustainability.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Environmental Sciences
Joane M. M. Correa, Ananda L. Sanson, Celia F. Machado, Sergio F. Aquino, Robson J. C. F. Afonso
Summary: This study used GC-MS to evaluate 12 emerging contaminants in surface water from Paraopeba River Basin. The results showed spatial distribution patterns of compounds and the impact of rainfall, and assessed the risk of human exposure.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Luiza C. G. M. Teixeira, Juliane Ribeiro das Chaves, Neyson Mendonca, Ananda L. Sanson, Mariana C. P. Alves, Robson J. C. F. Afonso, Sergio F. Aquino
Summary: The study found a significant presence of drugs and endocrine disrupters in water sources in Bolonha water complex in Belem, Brazil, attributed to the discharge of domestic sewage, highlighting the anthropic influence on the water bodies. Although some contaminants were found in treated water, the estimated risk of human exposure was low.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Water Resources
Juliane Ribeiro das Chaves, Luiza Carla Girard Mendes Teixeira, Neyson Martins Mendonca, Sergio Francisco de Aquino
Summary: The study investigated the occurrence of drugs in water supply and water for human consumption in Belem city, Northern Brazil. The results showed higher drug concentrations in raw water compared to treated water, and the full cycle treatment used in Bolonha filtered water chamber and treated water reservoir was not efficient for the complete removal of the compounds investigated.
ENGENHARIA SANITARIA E AMBIENTAL
(2021)
Article
Environmental Sciences
Sergio Francisco de Aquino, Emanuel Manfred Freire Brandt, Sue Ellen Costa Bottrel, Fernanda Bento Rosa Gomes, Silvana de Queiroz Silva
Summary: This study aimed to establish a priority list of P&EDC in Brazil by investigating their occurrence in water sources and estimating the risks of population exposure. The analysis highlighted high risks for certain compounds, necessitating enhanced monitoring in Brazil, while also confirming the presence of antimicrobial resistance agents in water sources across the country.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Biotechnology & Applied Microbiology
Aline Gomes de Oliveira Paranhos, Andressa Rezende Pereira, Yasmim Arantes da Fonseca, Silvana de Queiroz Silva, Sergio Francisco de Aquino
Summary: This study investigated the degradation kinetics of tylosin and the microorganisms involved in its anaerobic digestion. The results showed that increasing tylosin concentration in poultry litter had a stimulating effect on methane production. Metagenomic analyses suggested a syntrophic action between Methanobacterium archaea and bacteria such as Clostridium and Flexilinea, which played a crucial role in tylosin degradation.
Article
Environmental Sciences
Mariana C. P. Alves, Ananda L. Sanson, Amanda Quaresma, Mylena G. Freitas, Robson J. C. F. Afonso, Sergio F. Aquino
Summary: This study evaluates the occurrence and removal of 24 compounds in water treatment plants in Brazil. The results show variations in the concentrations of these compounds in different seasons and treatment steps. The assessment of margin of exposure indicates potential risks associated with some compounds in treated water samples.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2022)
Article
Engineering, Environmental
Paula Fontoura Procopio, Sergio Francisco de Aquino, Oscar Fernando Herrera Adarme
Summary: This study evaluated an activated sludge system as a post-treatment step for anaerobic effluents from the co-digestion of sugarcane vinasse and hemicelluloses hydrolysate. The results showed that activated sludge could effectively treat the anaerobic effluents and provide a stable organic load in the final effluent.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Andressa Rezende Pereira, Nathalia Vercelli de Assis, Aline Gomes de Oliveira Paranhos, Diego Roberto Sousa Lima, Bruno Eduardo Lobo Baeta, Sergio Francisco de Aquino, Silvana de Queiroz Silva
Summary: The addition of fresh manure and ruminal fluid to anaerobic sludge can improve methane production. Next Generation Sequencing analysis showed changes in microbial community in the inoculum. The inoculum with fresh bovine manure had the highest methane production, followed by the inoculum with ruminal fluid.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Raissa Machado Maluf Martins, Yasmim Arantes da Fonseca, Marina Victal Faria, Sergio Francisco de Aquino, Oscar Fernando Herrera Adarme, Bruno Eduardo Lobo Baeta
Summary: In this study, anaerobic co-digestion of cassava wastewater, cassava bagasse, and dairy manure was investigated to produce biogas. A mixture experimental design was used to determine the optimal proportion of each substrate. The results showed that the highest methane yields were obtained with 100% cassava wastewater and a mixture of 66.7% dairy manure, 16.7% cassava bagasse, and 16.7% cassava wastewater. High proportions of cassava bagasse led to low pH and high volatile fatty acid production. An energy balance calculation showed that anaerobic co-digestion could replace 22.5% of the energy demanded by the cassava processing industry.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Marine & Freshwater Biology
Emilia Marques Brovini, Gabrielle Rabelo Quadra, Jose R. Paranaiba, Luana Carvalho, Renata de Oliveira Pereira, Sergio Fracisco de Aquino
Summary: Pesticide contamination in water resources is a global threat, especially when considering mixture effects. A study in Brazil found that 3.2% of cities had pesticide occurrence above the limit of detection or quantification in surface freshwaters. The number increased to 117 cities when considering pesticide mixtures. The study highlights the importance of considering mixture effects in environmental risk assessment and the need for revising national environmental legislation to protect aquatic ecosystems in Brazil.
AQUATIC TOXICOLOGY
(2023)
Article
Engineering, Environmental
Erick Centeno Mora, Aline Gomes de Oliveira Paranhos, Sergio Francisco de Aquino, Carlos Augusto de Lemos Chernicharo
Summary: This study evaluated a novel configuration, using pressurised dynamic membrane modules (PDMMs), for treating anaerobic effluent from sewage. The results showed that the dense membrane had a more stable performance and could effectively remove pollutants such as methane and sulphide, while the microporous membrane suffered from wetting. Additionally, automated and chemical cleaning methods were effective in controlling fouling and maintaining membrane performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Aline Gomes de Oliveira Paranhos, Andressa Rezende Pereira, Leticia Dias Nunes Coelho, Silvana de Queiroz Silva, Sergio Francisco De Aquino
Summary: This study investigated the use of hydrothermal pretreatment (HPT) and anaerobic digestion (AD) alone or combined to produce methane and remove contaminants from poultry litter. The results showed that the combination of HPT80 and AD-1S can produce methane and energy, while reducing tylosin concentration and antimicrobial resistance genes (ARG) in the litter.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Multidisciplinary Sciences
Ivon M. Campos, Jose Augusto Zorel, Marilia Menegatto, Flaviane Silva, Oscar F. H. Adarme, Marina Tonucci, Bruno E. L. Baeta, Sergio F. Aquino, Silvana Q. Silva
Summary: This study aimed to investigate the metabolism involved in hydrogen production using sugars released by thermochemical pretreatment of lignocellulosic biomass as substrate. The results showed negative effects of acetic acid, formic acid, and furfural on bacterial metabolism, while powdered activated carbon significantly enhanced hydrogen production in the experiment.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
