Article
Environmental Sciences
Paul Bois, Daniel L. Childers, Milena Walaszek, Adrien Wanko
Summary: This study investigated the influence of plant transpiration on water budget in constructed treatment wetlands, finding significant impacts of season and site configuration on biomass and transpiration rate. Transpiration can reach up to 26% of incoming flow during the warmest part of the year, but only accounts for 2% of multi-monthly water budget. Additionally, transpiration in stormwater CTWs can lead to water scarcity, depleting available water in these systems. It is important to design ecological infrastructure in relation to objectives, whether focusing on treatment efficiency or flow regulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agronomy
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: This study compared the effects of seeding method and species composition on the biomass productivity and nutrient removal rates of FANS treating agricultural drainage. The results showed that the seeding method and species composition did not significantly affect biomass productivity and nutrient removal performance. However, the FANS seeded with a single species had lower biomass wash-off and higher nutrient removal rates compared to the FANS with mixed species.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Environmental Sciences
Yoong Kit Leong, Chi-Yu Huang, Jo-Shu Chang
Summary: This review discusses the role of four different algal-based wastewater treatment technologies in waste management and resource recovery, highlighting their nutrient removal mechanisms, operation parameters, recent advances, and developments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Congcong Zhao, Wenying Li, Dawei Shang, Qilong Ma, Luxing Liu, Jingtao Xu, Jiashuo Meng, Tao Zhang, Qian Wang, Xiaofei Wang, Jian Zhang, Qiang Kong
Summary: This study explored the wastewater treatment capacity of a filamentous algal constructed wetland system under different nitrogen sources. The results showed the fast and stable operation efficiency of the system. Ammonia nitrogen was preferred in Cladophora sp. absorption and assimilation. The symbiosis of bacteria and Cladophora sp. contributed to pollutant removal. Temperature, light intensity, and hydraulic retention time were found to significantly influence the purification ability of plants.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Rui Zhang, Xianchang Liu, Lutian Wang, Pan Xu, Kai Li, Xiaoxiao Chen, Rong Meng, Yuewu Pu, Xuetong Yang, Diederik P. L. Rousseau, Stijn W. H. Van Hulle
Summary: A novel WABR-CW system was developed to address the challenge of nutrient removal in decentralized wastewater treatment. The lab-scale experiment showed high removal efficiencies for COD (85-98%), NH4+-N (100%), TN (60-90%), and TP (85%-95%). The CW improved overall performance and provided denitrification capacity when the OLR was not optimal for the WABR.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Christy K. Benny, Saswati Chakraborty
Summary: A hybrid constructed wetland system combining horizontal and vertical flow was used to treat carbon-deficient synthetic dyeing wastewater. The results showed that the system could effectively remove azo dyes from low-carbon dyeing wastewater. In the horizontal wetland, organic waste products served as the carbon source for microbial dye degradation, resulting in 90% color removal. The vertical wetland removed dye degradation organics, ammonium-nitrogen, and organic-nitrogen.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Harizah B. Hariz, Rebecca J. Lawton, Rupert J. Craggs
Summary: The study investigated how operating parameters affect the biomass productivity and nutrient removal performance of Oedogonium sp. - a promising species for unialgal FANS. The results showed that the initial standing crop, harvesting frequency, and influent flow rate significantly affected biomass productivity and nutrient removal. Optimal parameters were determined to be an initial standing crop of 70-80 g DW m-2, a four-day harvesting interval, and an influent flow rate of 1 L min-1 (16.7 L min-1 m-1 width). These findings contribute to optimizing the biomass production and nutrient removal of Oedogonium sp. on FANS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biotechnology & Applied Microbiology
Kely Paula Salvi, Willian da Silva Oliveira, Paulo Antunes Horta, Leonardo Rubi Rorig, Eduardo de Oliveira Bastos
Summary: The present study proposed modifications to the Algal Turf Scrubber (ATS) system to establish a Seeded Algal Turf Scrubber (sATS) system for the cultivation of Ulva ohnoi. Results showed efficient nutrient removal and high-quality biomass production, supporting the feasibility of upscale experiments for improved macroalgal cultivation.
JOURNAL OF APPLIED PHYCOLOGY
(2021)
Article
Environmental Sciences
Shuiping Cheng, Jing Huai, Fei Zhong, Juan Wu, Shaole Yu
Summary: The study found that adding algae to constructed wetlands can strengthen the anoxic environment, increase volatile fatty acid concentrations, and improve the ratios of various nitrite reductase and nitrate reductase genes, thus expanding the active space for denitrification. Therefore, algae addition could potentially enhance denitrification in wastewater treatment with low COD/N ratios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Leandro Bassani, Catiane Pelissari, Arieleen Reis da Silva, Pablo Heleno Sezerino
Summary: This study evaluated the influence of two different feeding modes on the wastewater treatment performance and oxygen consumption rate of unsaturated (UVF) and partially saturated (SVF) constructed wetlands under subtropical climate conditions for four years. The results showed that operating the wetlands with a specific hydraulic loading rate of around 4 L m(-2) mm(-1) and a specific pulse volume of 26 L m(-2) is preferable, leading to reduced inlet pumping power requirements and less superficial area requirements.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Green & Sustainable Science & Technology
Alberto Fernandez del Castillo, Marycarmen Verduzco Garibay, Carolina Senes-Guerrero, Danielle A. Orozco-Nunnelly, Jose de Anda, Misael Sebastian Gradilla-Hernandez
Summary: This review compares the removal performance of combined AR + CW systems with individual units and traditional processes, showing more efficient pollutant removal and highlighting the advantages of combined systems in terms of construction, operation, energy consumption, land use, and GHG emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Ting Wei, Yaqian Zhao, Jia Guo, Bin Ji, Alvaro Pun Garcia, Abraham Esteve Nunez
Summary: This study developed a novel lightweight substrate (Al-NLS) composed of aluminum sludge and polyurethane, and investigated its effectiveness in constructed wetlands (CWs). Results showed that Al-NLS had favorable adsorption capacities for phosphorus and removal efficiencies for pollutants in real domestic wastewater. It also positively influenced the microbial community. Therefore, Al-NLS can be considered as a new alternative substrate in CWs technology.
JOURNAL OF WATER PROCESS ENGINEERING
(2024)
Article
Engineering, Environmental
Mingde Ji, Jie Wang, Samir Kumar Khanal, Saqi Wang, Jian Zhang, Shuang Liang, Huijun Xie, Haiming Wu, Zhen Hu
Summary: In this study, a high-rate activated sludge-two-stage vertical up-flow constructed wetland (HRAS-TVUCW) system was developed to reduce carbon emissions during municipal wastewater treatment. The carbon emissions of the HRAS-TVUCW system were 4.1-fold lower than that of the conventional anaerobic/anoxic/aerobic (A2O) process, while the recovered energy from the HRAS-TVUCW system increased its contribution to carbon neutrality by 4.6-fold. Functional microbial community analysis showed that the controlled dissolved oxygen allocation in the HRAS-TVUCW system led to distinct microbial communities in each unit, facilitating denitrification efficiency increase and carbon emissions reduction. Overall, the HRAS-TVUCW system can be considered as a cost-effective and sustainable low-carbon technology for municipal wastewater treatment.
Article
Ecology
C. A. Arias, D. Istenic, O. Stein, X. Zhai, R. Kilian, I. Vera-Puerto, H. Brix
Summary: This study assessed the impact of recycling water from VFCW effluent on a decentralized wastewater system and recommended an appropriate bed depth based on the changes in water quality. The results showed that the system performed well and the dimensions given in the Danish guidelines may be overdesigned.
ECOLOGICAL ENGINEERING
(2022)
Article
Agricultural Engineering
Abhishek Soti, Saurabh Singh, Vishesh Verma, Niha Mohan Kulshreshtha, Urmila Brighu, Pradip Kalbar, Akhilendra Bhushan Gupta
Summary: The requirement of large land area limits the adoption of constructed wetlands (CWs) in urban settings with limited land availability. The area calculations for CW design are commonly carried out following Kikuth approach where the removal rate constant (K) is derived from literature. Investigation of secondary data of 82 vertical flow CWs, performed in this study, revealed wide variations in the calculated K values for different pollutants under different environmental and operational conditions, highlighting the importance of incorporating desired pollutant removal levels into customized CW design.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Gislayne Alves Oliveira, Enio Leandro Machado, Rhauani Segatto Knoll, Naira Dell'Osbel, Gustavo Stolzenberg Colares, Lucia Ribeiro Rodrigues
Summary: The study evaluated the performance of urban wastewater treatment using an integrated system combining anaerobic reactor, microalgae cultivation, Venturi tube ozone recirculation, coagulation/flocculation with tannin-based agent, and dissolved air flotation (DAF). Results showed that applying ozone and higher tannin dosages can improve treatment efficiency, with the best outcomes achieved using 0.13 mg O-3/mg of biomass and 105 mg/L of tannin. This system proved to be a viable alternative for urban wastewater treatment and microalgae recovery.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Environmental Sciences
Gustavo Stolzenberg Colares, Naira Dell'Osbel, Gabriele Paranhos, Patricia Cerentini, Gislayne A. Oliveira, Elizandro Silveira, Lucia R. Rodrigues, Jocelene Soares, Carlos A. Lutterbeck, Adriane Lawisch Rodriguez, Jan Vymazal, Enio L. Machado
Summary: The study developed a pilot-scale integrated system for decentralized urban wastewater treatment and bioelectricity generation. It efficiently reduced wastewater parameters and achieved certain results in the field of bioelectricity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Water Resources
Lenin S. Bajana, Miguel Martinez-Fresneda, Juan Carlos Navarro, Gleison de S. Celente, Eduardo A. Lobo
Summary: This research calibrated a Water Quality Index (WQI) for the first time in Ecuador to measure nutrient enrichment in the Paute River basin. Two standards, one developed for the United States and one calibrated for Brazil, were compared. The results showed that the WQI calibrated for Brazil was more restrictive and efficient for monitoring the aquatic ecosystems in the south region of Ecuador.
SUSTAINABLE WATER RESOURCES MANAGEMENT
(2022)
Article
Soil Science
Luis Fernando Marion, Robson Schneider, Mauricio Roberto Cherubin, Gustavo Stolzenberg Colares, Patrik Gustavo Wiesel, Adilson Bem da Costa, Eduardo Alcayaga Lobo
Summary: This research compared six strategies for calculating soil quality indexes and identified the simplest, most effective, and low-cost assessment tool for soil quality in southern Brazil. The results showed that all indexes efficiently detected soil quality changes in different systems, and the weighted addition method using a reduced number of soil indicators may be a potential protocol for soil management.
SOIL & TILLAGE RESEARCH
(2022)
Article
Water Resources
Fabricio Weiss, Enio Leandro Machado, Adriane de Assis Lawisch Rodriguez, Diosnel Antonio Rodriguez Lopez, Aline Strothmann
Summary: This study evaluated the capacity to produce coal from waste in the central region of Rio Grande do Sul, Brazil. By using low-temperature pyrolysis technique and a catalyst, pyrolyzed samples with energy generation characteristics were obtained. However, the presence of heavy metals needs to be further investigated for their use as fuel, and the potential as fertilizer needs to be addressed.
ENGENHARIA SANITARIA E AMBIENTAL
(2022)
Review
Water Resources
Fausto Lopes Duarte Muller, Adilson Moacir Becker Junior, Jorge Andre Ribas Moraes, Enio Leandro Machado
Summary: Collective management of industrial solid waste is an alternative strategy that aims to reduce costs and comply with legal requirements. This systematic review focused on Brazilian industrial clusters and their waste management practices, specifically in an Industrial Waste Center in southern Brazil. The study found an increasing trend in research on Life Cycle Assessment and the consolidation of the concept of industrial symbiosis. Waste management in the tobacco industry mainly focuses on the harmful effects of cigarettes on health and post-consumption waste issues.
ENGENHARIA SANITARIA E AMBIENTAL
(2022)
Article
Environmental Sciences
Elizandro Oliveira Silveira, Nathalia Mendes Felizzola, Eugenia Vargas Hickmann, Odorico Konrad, Carlos Alexandre Lutterbeck, Enio Leandro Machado, Lucia Ribeiro Rodrigues
Summary: The present study evaluated the potential for biogas generation from microalgae biomass and macrophytes used in vertical flow constructed wetlands. The results showed that this method can effectively degrade pollutants while producing usable biomass energy and biogas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Agricultural Engineering
Gleison de Souza Celente, Tiele Medianeira Rizzetti, Yixing Sui, Rosana de Cassia de Souza Schneider
Summary: Using microalgal technology for high-value compound production has gained attention, but effective methods on an industrial scale are lacking. This study found that China is the major contributor to D. salina research, with a focus on carotenoid production, and genetic engineering is seen as the future direction.
BIOMASS & BIOENERGY
(2022)
Article
Energy & Fuels
Maiara P. de Souza, Gustavo S. Colares, Patrik G. Wiesel, Tiele M. Rizzetti, Michele Hoeltz, Lisianne B. Benitez, Enio L. Machado, Rosana C. S. Schneider
Summary: The use of algal turf scrubber (ATS) systems can help remediate water bodies by reducing nitrogen, phosphorus, and organic contaminants, while also valorizing biomass for bioactive compound production. A life cycle assessment (LCA) was conducted to evaluate the environmental impacts of pigment production from periphytic biomass using a pilot-scale ATS system.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Review
Engineering, Environmental
Tulio Cicero Haas Lima, Enio Leandro Machado, Rosana de Cassia de Souza Schneider
Summary: Plastics serve as alternatives for distributing industrialized products, especially food. While versatile and crucial for product conservation, plastic packaging has negative environmental impacts that necessitate a clean technology and circular economy approach. This scientometric analysis reveals a gap in connecting the circular economy and clean technologies with plastic packaging, highlighting the need to develop technologies that align plastic packaging with a more sustainable circular economy through eco-design.
WASTE MANAGEMENT & RESEARCH
(2023)
Article
Ecology
Gustavo S. Colares, Naira Dell'Osbel, Igor Conrad, Gabriele Paranhos, Sabrina B. Vaz, Gislayne Oliveira, Leticia Mesacasa, Deison Fochi, Odorico Konrad, Lucia R. Rodrigues, Carlos A. Lutterbeck, Adriane Lawisch Rodriguez, Jan Vymazal, Pablo H. Sezerino, Enio L. Machado
Summary: The study aimed to evaluate the influence of different operation conditions on two treatment systems composed of anaerobic biofilter (AF) and hybrid constructed wetlands (CWs). The results showed that the treatment performance of both systems was similar under different loading rates, efficiently removing BOD5 and turbidity, but with lower removal efficiencies for nutrients (TP and N-NH3).
ECOLOGICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Carlos Alexandre Lutterbeck, Gustavo Stolzenberg Colares, Gislayne Alves Oliveira, Geani Mohr, Fabia Beckenkamp, Alexandre Rieger, Eduardo Alcayaga Lobo, Lucia Helena Ribeiro Rodrigues, Enio Leandro Machado
Summary: The research found that the sequential use of microbial fuel cells and constructed wetlands in wastewater treatment showed complementary effects, achieving satisfactory results in organic load removal, compliance with national and international standards, and significant reduction in genotoxicity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Gleison de Souza Celente, Tiele Medianeira Rizzetti, Rosana de Cassia de Souza Schneider, Patricia J. Harvey, Yixing Sui
Summary: This study evaluates the effect of different carbon sources on the growth and protein profile of Dunaliella tertiolecta CCAP 19/30. The results indicate that D. tertiolecta cannot grow mixotrophically using organic carbon, while NaHCO3 is a more suitable carbon source for its growth.
FERMENTATION-BASEL
(2022)