Article
Environmental Sciences
Kritika Thakur, Tanya Kuthiala, Gursharan Singh, Shailendra Kumar Arya, Chuleemas Boonthai Iwai, Balasubramani Ravindran, Kuan Shiong Khoo, Soon Woong Chang, Mukesh Kumar Awasthi
Summary: Aquaponics combines aquaculture and hydroponics, offering a sustainable and environmentally friendly system for food production in urban areas. The system completely reuses its waste as plant fertilizer, resulting in water savings and efficient farming.
Article
Engineering, Environmental
Vanessa Rosana Ribeiro, Hector David Delgado Osorio, Amanda Canterle Ulrich, Tiele Medianeira Rizzetti, Andrea Sanchez Barrios, Rosana de Cassia de Souza Schneider, Lisianne Brittes Benitez
Summary: The study evaluated the bioremediation and bioelectricity production of synthetic wastewater in a microalgaemicrobial fuel cell system. The results showed that the combination of Escherichia coli and Desmodesmus subspicatus was most effective in bioelectricity generation.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yuxiu Chen, Simone Krings, Alexia M. J. M. Beale, Bing Guo, Suzanne Hingley-Wilson, Joseph L. Keddie
Summary: Biofilm bioreactors have become increasingly popular in the wastewater industry due to their ability to achieve higher cell densities and reaction rates. A new method using a biocoating or living paint made from a synthetic biofilm has been introduced to improve the viability and formation speed of nitrifying bacteria. This method utilizes two colloid science phenomena to encapsulate and convert desiccation-sensitive nitrifying bacteria effectively.
ADVANCED SUSTAINABLE SYSTEMS
(2022)
Article
Green & Sustainable Science & Technology
Nadjla Chaib, Sabrina Dzizi, Hadjer Kaddeche, Faiza Noune
Summary: The study demonstrates the efficiency of using diatoms in removing nitrogen and phosphorus from wastewater, showing high removal rates for ammonium, nitrate, phosphorus, and COD. This indicates that diatom biofilms can successfully remove nutrients from different types of effluents.
CLEAN-SOIL AIR WATER
(2021)
Article
Engineering, Environmental
Joao R. Silva, Francisco Carvalho, Carolina Vicente, Andreia D. Santos, Rosa M. Quinta -Ferreira, Luis M. Castro
Summary: This study investigates electrocoagulation as an alternative treatment for Cork Boiling Wastewater (CBW). The results show that adjusting the current density, electric tension, and electrolyte concentration can achieve efficient removal of COD, TC, TN, and TSS. Higher current density and electrolyte concentration reduce electrode wear time but increase overall pollutant removal.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Phumudzo Budeli, Mutshiene Deogratias Ekwanzala, John Onolame Unuofin, Maggy Ndombo Benteke Momba
Summary: In recent years, research efforts have focused on the potential application of bacterial and ligninolytic enzyme systems in the removal of endocrine disrupting compounds (EDCs) in wastewater. These systems show promise, but further optimization is needed to increase their stability and effectiveness in harsh environmental conditions.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Dehua Zhao, Wai Yan Cheah, Sai Hin Lai, Eng-Poh Ng, Kuan Shiong Khoo, Pau Loke Show, Tau Chuan Ling
Summary: Heavy metals in industrial wastewater are hazardous and can be enriched in the food chain, leading to serious global environmental problems. Biosorption, especially when microalgae and bacteria are combined, is an effective and affordable method for treating heavy metal wastewater. This review discusses the advantages, mechanisms, and potential applications of microalgae-bacteria consortia as biosorbents, aiming to promote the development of more effective ways for bioremediation of heavy metals from wastewater.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Nina Pohl, Marcel Dominik Solbach, Kenneth Dumack
Summary: Wastewater is treated by microbial communities within bioreactors, with protists being important but least known organisms in WWTPs. Recent surveys show that the most abundant protistan sequences in WWTPs belong to Thecofilosea. Research found that all highly abundant thecofilosean sequences from WWTPs represent a single species - Rhogostoma minus, which functions as a host for Legionellales, bacteria linked to waterborne diseases. Further investigation is needed to determine if Rhogostoma minus serves as a host for known human pathogenic Legionellales.
Article
Environmental Sciences
Besma Harzallah, Samir B. Grama, Hacene Bousseboua, Yves Jouanneau, Jixiang Yang, Jian Li
Summary: This study reports the isolation of new bacillus strains with high performances in metabolizing phenols, one of which showed outstanding efficiency in metabolizing phenol at concentrations up to 1200 mg L-1 and degrading a wide range of other phenolic compounds simultaneously. The genes encoding phenol hydroxylase (PH) and catechol-2,3-dioxygenase (C23O) were detected and characterized, confirming the degradation of phenol occurs via the meta pathway. This novel strain is believed to be a promising organism for developing more robust and efficient bioremediation processes of degrading phenolic compounds.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
S. Jerez, J. San Martin, M. Ventura, M. I. Pariente, Y. Segura, D. Puyol, R. Molina, J. A. Melero, F. Martinez
Summary: Oil refineries produce large amounts of refinery wastewater and oily sludge. Conventional treatments handle these effluents separately without considering resource recovery potential. Thermal hydrolysis of oily sludge at different temperatures and times reduces the solid fraction and releases soluble substrates. These hydrolyzed fractions can be used as substrates for the biological treatment of refinery wastewater.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
F. P. de Andrade, C. E. de Farias Silva, J. A. Medeiros, R. C. Vieira, M. L. F. de Sa Filho, G. K. S. Santos
Summary: The application of microalgae in bioremediation of urban and industrial effluents has shown excellent results. Microalgae have high photosynthetic efficiency and can adapt to a variety of effluents and environmental conditions. The treatment can be done in various systems, and the open system is widely used due to its economic and operational advantages. Proto-cooperation between microalgae and contaminating microorganisms, such as bacteria and fungi, is important in the open system.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Analytical
Quan Wang, Xiaoyu Wang, Hui Wei
Summary: In this study, a laccase-like nanozyme sensor array was developed for phenol detection and differentiation. The study examined the effect of various spinel-type transition metal oxides on the laccase-like activity and constructed a colorimetric sensor array based on manganese-based spinel oxides. The sensor array showed good performance in identifying and distinguishing phenol and its derivatives in tap water samples.
ANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Gopal Suresh, Balamuralikrishnan Balasubramanian, Nagaiya Ravichandran, Balasubramanian Ramesh, Hesam Kamyab, Palanivel Velmurugan, Ganesan Vijaiyan Siva, Arumugam Veera Ravi
Summary: This study evaluated the ability of Bacillus thuringiensis and Staphylococcus capitis isolated from tannery industry sediment to detoxify Cr(VI). The optimal conditions for reducing hexavalent chromium were found to be 35 degrees Celsius and pH 7. The results showed that both bacterial strains were capable of reducing Cr(VI) effectively, with significant reductions achieved at a primary concentration of 50 μg/mL.
BIOMASS CONVERSION AND BIOREFINERY
(2021)
Article
Environmental Sciences
Huirong Lin, Guangcun Chen, Hongmei Zhao, Yuanqing Cao
Summary: Pseudomonas putida shows varying resistance and accumulation capacities towards different heavy metals, with its biofilm demonstrating higher resistance to Cu2+ and Zn2+ compared to planktonic cells. The study also suggests that P. putida CZ1 biofilm cultured in MM with citric acid may have greater potential for remediation in organic acid rich environments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Yifan Liang, Zengrui Pan, Jianlong Sheng, Yongjiong Ni, Jun Li
Summary: In order to improve nitrogen removal in wastewater treatment, a new method of using waste iron shavings (Fe-C) wrapped in polyurethane sponge cubes in anoxic zones of a continuous reactor was proposed. Three types of denitrifying bacteria were enriched in the biofilms and activated sludge, including iron autotrophic denitrifying bacteria, heterotrophic denitrifying bacteria, and heterotrophic nitrification-aerobic denitrifying bacteria. With the enrichment of these bacteria, efficient and stable nitrogen removal and total phosphorus removal were achieved.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Agronomy
Manuel Merinero, Ana Alcudia, Belen Begines, Guillermo Martinez, Maria Jesus Martin-Valero, Jesus Alberto Perez-Romero, Enrique Mateos-Naranjo, Susana Redondo-Gomez, Salvadora Navarro-Torre, Yadir Torres, Francisco Merchan, Ignacio D. Rodriguez-Llorente, Eloisa Pajuelo
Summary: In this study, a new approach using plant growth-promoting rhizobacterium and organometallic Fe-containing polymeric nanoparticles was used to increase mineral nutrients in wheat. The results showed that using FeNPs alone can effectively enhance the biofortification of iron in wheat.
Article
Agronomy
Pedro Valle-Romero, Jesus V. Garcia-Lopez, Susana Redondo-Gomez, Noris J. Flores-Duarte, Ignacio D. Rodriguez-Llorente, Yanina Lorena Idaszkin, Eloisa Pajuelo, Enrique Mateos-Naranjo
Summary: Biofertilization with PGPB from halophytes improved strawberry development, physiological traits, and nutritional balance. It enhanced shoot and root biomass, carbon absorption capacity, water use efficiency, and photosynthetic rate. Inoculation also improved the efficiency of the plant photochemical apparatus and balanced phosphorus and nitrogen levels, leading to better carbon metabolism and increased strawberry growth.
Article
Biochemistry & Molecular Biology
Noris J. Flores-Duarte, Eloisa Pajuelo, Enrique Mateos-Naranjo, Salvadora Navarro-Torre, Ignacio D. Rodriguez-Llorente, Susana Redondo-Gomez, Jose A. Carrasco Lopez
Summary: Plant-growth-promoting bacteria help plants thrive in polluted environments and increase crop yields. This study tested two different bacterial communities from the microbiome of Mesembryanthemum crystallinum, a moderate halophyte, and evaluated their effects on plant growth, metal accumulation, and metabolomics. The results showed that both SynComs improved plant growth, physiology, and metal accumulation, indicating their potential as biofertilizers. Additionally, the study demonstrated the effectiveness of these biofertilizers in alfalfa, another crop plant.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Maria Luisa Ojeda, Fatima Nogales, Jose A. Carrasco Lopez, Maria del Carmen Gallego-Lopez, Olimpia Carreras, Ana Alcudia, Eloisa Pajuelo
Summary: The administration of selenium supplements in different forms affects the colonic microbiota and bile salts homeostasis in adolescent rats, leading to changes in adipose tissue development. Low levels of sodium selenite supplementation primarily affect liver function, while low SeNP levels mainly affect the microbiota. Moderate-SeNPs administration causes dysbiosis and an increase in pathogenic bacteria. These results indicate the mechanistic involvement of the microbiota-liver-bile salts axis in adipose tissue changes during adolescence.
Article
Microbiology
Joao Carreiras, Ana Cruz-Silva, Bruno Fonseca, Ricardo C. Carvalho, Jorge P. Cunha, Joao Proenca Pereira, Catarina Paiva-Silva, Soraia A. Santos, Rodrigo Janeiro Sequeira, Enrique Mateos-Naranjo, Ignacio D. Rodriguez-Llorente, Eloisa Pajuelo, Susana Redondo-Gomez, Ana Rita Matos, Jennifer Mesa-Marin, Andreia Figueiredo, Bernardo Duarte
Summary: Amid climate change, heatwave events are expected to increase in frequency and severity. The present work aims to evaluate the physiological fitness improvement by two marine plant growth-promoting rhizobacteria consortia in Vitis vinifera cv. Antao Vaz under heatwave conditions. Bioaugmented grapevines exposed to heatwave stress presented a significantly enhanced photoprotection capability and higher thermo-stability, exhibiting a significantly lower dissipation energy flux than the non-inoculated plants. Additionally, one of the rhizobacterial consortia tested improved light-harvesting capabilities and osmoprotectant promotion, resulting in lower osmolyte concentration and maintained leaf turgidity.
Article
Plant Sciences
Noris J. Flores-Duarte, Salvadora Navarro-Torre, Enrique Mateos-Naranjo, Susana Redondo-Gomez, Eloisa Pajuelo, Ignacio D. Rodriguez-Llorente
Summary: This study aimed to determine the potential of a synthetic bacterial community (SynCom) isolated from Medicago spp. nodules to promote growth and nodulation in degraded estuarine soils. The results showed that the SynCom maintained and even increased its plant growth promoting properties in the presence of metals, and significantly improved Medicago growth and adaptation to degraded estuarine soils under abiotic stress conditions.
Article
Plant Sciences
Jose-Maria Barcia-Piedras, Jesus-Alberto Perez-Romero, Enrique Mateos-Naranjo, Raquel Parra, Ignacio-David Rodriguez-Llorente, Maria Camacho, Susana Redondo-Gomez
Summary: The Earth is undergoing rapid changes, resulting in environmental pollution and difficulties in food production. Halophytes, with their high potential in environmental remediation and agriculture, are of great interest. This study investigated the effects of plant growth-promoting bacteria (PGPs) on Arthrocaulon macrostachyum under different concentrations of NaCl, and found that certain PGP bacteria significantly promoted plant growth and had a biocontrol effect on fungi. Furthermore, it was observed for the first time that PGP bacteria improved root biomass in cuttings of this perennial species. Overall, this study highlights the potential of PGPs in optimizing the development of halophytes.
Article
Plant Sciences
Susana Redondo-Gomez, Jennifer Mesa-Marin, Jesus A. Perez-Romero, Vicente Mariscal, Fernando P. Molina-Heredia, Consolacion Alvarez, Eloisa Pajuelo, Ignacio D. Rodriguez-Llorente, Enrique Mateos-Naranjo
Summary: Rice is a key crop for food security and the excessive use of chemical fertilizers causes environmental problems. This study investigates the use of beneficial bacteria from halophytes as a sustainable alternative for promoting rice growth. The results show that these biofertilizers can enhance rice growth and photosynthetic efficiency under saline conditions and future climate change scenarios.
Article
Chemistry, Inorganic & Nuclear
Carlos J. Carrasco, Francisco Montilla, Eleuterio Alvarez, Agustin Galindo, Maria Perez-Aranda, Eloisa Pajuelo, Ana Alcudia
Summary: In this study, novel one-dimensional or two-dimensional coordination polymers were synthesized and their antimicrobial properties were evaluated. The results showed that complexes 2a and 2b' exhibited the best antimicrobial activity against the tested pathogens.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Andres F. Torres-Franco, Deborah Leroy-Freitas, Cristina Martinez-Fraile, Elisa Rodriguez, Pedro A. Garcia-Encina, Raul Munoz
Summary: Anaerobic and microalgae-based technologies have emerged as sustainable alternatives for municipal wastewater treatment. However, the presence of viruses in the treated wastewater is a major concern for reuse applications. This study assessed the ability of these technologies to reduce viruses during secondary wastewater treatment. The results showed that all technologies were effective in reducing the concentration of viruses, with microalgae-based treatment exhibiting the highest potential for reducing the disinfection requirements of treated wastewater.
Article
Engineering, Environmental
Young Gwang Kim, Sae Yun Kwon, Spencer J. Washburn, Scott C. Brooks, Ji Won Yoon, Lucien Besnard
Summary: The study uses Hg isotope ratios to identify the sources and exposure pathways of mercury in bivalves, finding that dissolved Hg phases in the water column are the primary source and exposure pathway to bivalves. This provides new insights into using bivalves as bioindicators for sediment quality monitoring.
Article
Engineering, Environmental
Hui Geng, Ying Xu, Rui Liu, Dianhai Yang, Xiaohu Dai
Summary: This study investigates the effect of cation exchange resin (CER) on the sequential recovery of hydrogen and methane from anaerobic digestion (AD) and the corresponding mechanisms. The results show that CER can simultaneously enhance the production of hydrogen and methane by promoting the solubilisation, hydrolysis, and acidification of organic matter. Additionally, CER facilitates effective contact between bacteria and organic particulates and reduces the energy barrier for mass transfer during methane production. The study also reveals changes in the microbial community structure and metagenomics during the AD process.
Article
Engineering, Environmental
Xiaojing Lin, Zhan Jin, Shunfeng Jiang, Zhiquan Wang, Suqing Wu, Ke Bei, Min Zhao, Xiangyong Zheng
Summary: Dehumidification combined with addition of absorbent resin supplement (ARS) was used to achieve rapid evaporation of non-pretreated urine, resulting in high water evaporation efficiency and nutrient recovery.
Article
Engineering, Environmental
Yangli Che, Chaoran Lin, Shen Li, Jiao Liu, Longhai Zhu, Shilei Yu, Nan Wang, Haoshuai Li, Mutai Bao, Yang Zhou, Tonghao Si, Rui Bao
Summary: Hydrodynamic processes play a crucial role in the transmission of sediments, microbial assembly, and organic carbon redistribution in the ocean. Through experiments and analysis, we found that hydrodynamics shape the assembly of microbial communities and control the redistribution of different sourced organic carbon, thereby influencing microbial-mediated biogeochemical transformation.
Article
Engineering, Environmental
Chao Chen, Yu Yang, Nigel J. D. Graham, Zhenyu Li, Xingtao Yang, Zhining Wang, Nadia Farhat, Johannes S. Vrouwenvelder, Li -an Hou
Summary: The fouling of seawater reverse osmosis membranes is a persistent challenge in desalination. This study monitored the operational performance of a desalination plant for 7 years and the fouling development in different areas of membrane modules. The findings showed that operational performance declined over time and fouling mainly occurred at the feed side of the modules, with the highest microbial diversity. Keystone species like Chloroflexi and Planctomycetes played an important role in maintaining community structure and biofilm maturation. Polysaccharides, soluble microbial products, marine humic acid-like substances, and inorganic substances contributed to fouling. Overall, biofouling had a significant impact on membrane fouling after 7 years of operation.
Article
Engineering, Environmental
Dan Li, Jieyi Sun, Yibo Fu, Wentao Hong, Heli Wang, Qian Yang, Junhong Wu, Sen Yang, Jianhui Xu, Yunfei Zhang, Yirong Deng, Yin Zhong, Ping'an Peng
Summary: Sulfidation-oxidation treatment of magnetite (Fe3O4) enhances the production of dark center dot OH, which can efficiently degrade dissolved organic matter (DOM) and accelerate carbon cycling.
Article
Engineering, Environmental
Cheng Yu, Kaijun Wang, Kaiyuan Zhang, Ruiyang Liu, Pingping Zheng
Summary: This study implemented a microaerobic-aerobic configuration in a full-scale municipal wastewater treatment facility and investigated the effects on sludge characteristics, pollutant removal, microbial community, and granulation mechanisms. The results showed successful transition from flocculent-activated sludge to well-defined AGS after two months of operation. The primary pathways for pollutant removal were simultaneous nitrification, denitrification, and phosphorus removal. Moreover, the incorporation of internal separators induced shifts in the flow pattern, which promoted granulation.
Article
Engineering, Environmental
Zhe Zhang, Shaoyang Hu, Guangrong Sun, Wei Wang
Summary: Halogenated aromatic disinfection byproducts (DBPs), such as halogenated phenols, have garnered widespread attention due to their high toxicity and prevalence. This study reports on the analysis, occurrence, and cytotoxicity of a group of emerging halogenated aromatic DBPs, known as halogenated polyhydroxyphenols (HPPs), in drinking water.
Article
Engineering, Environmental
Shengyue Chen, Jinliang Huang, Peng Wang, Xi Tang, Zhenyu Zhang
Summary: Accurate prediction of river water quality is crucial for sustainable water management. This study introduces wavelet analysis and transfer learning techniques to assist LSTM modeling, proposing a newly coupled modeling approach that improves short-term prediction of river water quality.
Article
Engineering, Environmental
Bang Du, Xinmin Zhan, Piet N. L. Lens, Yifeng Zhang, Guangxue Wu
Summary: Efficient anaerobic digestion relies on the cooperation of different microorganisms with different metabolic pathways. This study investigated the effects of different operational modes and the addition of powdered activated carbon (PAC) on ethanol metabolic pathways. The results showed that the SBR mode and the presence of CO2 facilitated ethanol metabolism towards propionate production, while the CFR mode with extended solids retention time enriched Geobacter. Adjusting operational modes and PAC addition can modulate anaerobic ethanol metabolism and enrich Geobacter.
Article
Engineering, Environmental
Wanfa Wang, Si-Liang Li, Jun Zhong, Yuanbi Yi, Fujun Yue, Zenglei Han, Qixin Wu, Ding He, Cong-Qiang Liu
Summary: This study compares the carbon biogeochemical processes in karst and non-karst regions within large thermal stratified river-reservoir systems. The results demonstrate that karst reservoirs have a reduced potential for carbon emissions and highlight the importance of considering geologic settings to improve accuracy in regional and global CO2 emission estimates.
Article
Engineering, Environmental
Chunxia Jiang, Zelong Zhao, Dong Zhu, Xiong Pan, Yuyi Yang
Summary: This study analyzed the occurrence and distribution of antibiotic resistance genes (ARGs) in different environmental media of the Yangtze River using metagenomics. Core resistome dominated by multidrug resistance genes was found in all samples, while rare resistome dominated by various resistance genes was more prevalent in plasmids. Specific bacteria were identified as hosts for both core and rare resistomes, with high clinical concern ARGs found in the rare resistome. Particle-associated environment provided the most ideal conditions for resistome hosts. This study provided insights into the genetic locations of ARGs and the community assembly mechanisms of ARG hosts in freshwater environments.
Article
Engineering, Environmental
Yu Zhang, Yongtao He, Linchun Jia, Lei Xu, Zheng Wang, Yueling He, Ling Xiong, Xumeng Lin, Hong Chen, Gang Xue
Summary: By synergizing organic carbon source, thiosulfate, and zero-valent iron, efficient mixotrophic denitrification of oligotrophic secondary effluent can be achieved. Thiosulfate plays a vital role in promoting TN removal efficiency, while corrosion of Fe0 releases OH- to neutralize H+ from thiosulfate-driven denitrification, creating a suitable environment for denitrification. The coordination of thiosulfate and Fe0 maintains the dominance of Thiobacillus for denitrification.