Article
Environmental Sciences
A. Y. A. Mohamed, A. Siggins, M. G. Healy, D. O. HUallachain, O. Fenton, P. Tuohy
Summary: Constructed wetlands are cost-effective and sustainable treatment technology for dairy wastewater, but they require large area and have poor phosphorus removal. This study uses a novel coagulation-sedimentation process prior to loading wetlands, which achieves high removal efficiencies and complies with EU directives.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
F. Djodjic, P. Geranmayeh, D. Collentine, H. Markensten, M. Futter
Summary: This study assessed the cost-efficiency of 233 constructed wetlands in two regions of Sweden using a three-step modelling approach. The results showed that many constructed wetlands had low nutrient retention due to their suboptimal location in catchments, leading to low cost-efficiency. Some high cost-efficiency wetlands were identified, but further guidance and instructions are needed to improve their cost-efficiency.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Rajabu Hamisi, Agnieszka Renman, Gunno Renman, Anders Worman, Roger Thunvik
Summary: The performance and design of a tidal flow constructed wetland (TFCW) for wastewater treatment were studied through a nine-month field trial and process modelling. The TFCW demonstrated effective removal of pollutants and pH reduction. The modelling accurately predicted water flow processes and identified defects in the treatment wetland.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Qian Wang, Jiewei Ding, Huijun Xie, Derek Hao, Yuanda Du, Congcong Zhao, Fei Xu, Qiang Kong, Baoshan Wang
Summary: The study found that using intertidal wetland sediments as a microbial source for CWs can effectively improve phosphorus removal rates, with bacteria such as phosphorus-accumulating organisms enhancing microbial transformation of phosphorus. However, the addition of IWS increased phosphorus loss via substrate accumulation and decreased phosphorus removal rate via plant uptake.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Hu Wu, Jie Wang, Jieyu Chen, Xiaoning Wang, Dapeng Li, Jie Hou, Xugang He
Summary: The novel simultaneous nitrogen and phosphorus removal process combines nitrification, endogenous denitrification, and denitrifying phosphorus removal to achieve high-efficiency nutrient removal in constructed wetlands. The success of the process is attributed to the utilization of DGAOs and DPAOs in utilizing carbon sources for endogenous denitrification and denitrifying phosphorus removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
A. Pascual, J. A. Alvarez, D. de la Varga, C. A. Arias, D. Van Oirschot, R. Kilian, M. Soto
Summary: The influence of bed depth on the performance of aerated horizontal constructed wetlands was investigated at the pilot plant scale. The results showed that a larger bed depth and artificial aeration can improve the loading rate and the removal efficiency of organic matter and nitrogen in the horizontal constructed wetlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
M. Sanchez, I. Ruiz, M. Soto
Summary: Constructed wetlands are a promising decentralised wastewater treatment technology that is suitable for single-family homes, rural or peri-urban areas, and low-income areas. This study combines a new anaerobic/anoxic digester with a vertical subsurface constructed wetland for the first time, achieving high overall removal efficiency of organic matter and nitrogen.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Ecology
Maria Alejandrao Maine, Gabriela Cristina Sanchez, Hernan Ricardo Hadad, Sandra Ester Caffaratti, Maria del Carmen Pedro, Gisela Alfonsina Di Luca, Maria de las Mercedes Mufarrege, Emanuel Nocetti
Summary: The hybrid wetland system demonstrated high operating efficiency and effectively removed pollutants from the wastewater. Removal efficiency for pollutants was high in both periods, with even higher efficiency observed in the second period.
ECOLOGICAL ENGINEERING
(2022)
Article
Environmental Sciences
George Pavlidis, Ioanna Zotou, Helen Karasali, Anna Marousopoulou, Georgios Bariamis, Ioannis Nalbantis, Vassilios A. A. Tsihrintzis
Summary: The efficiency of constructed floating wetlands (CFWs) in removing agrochemicals has been investigated in this study. The results demonstrate that CFW systems are effective and cost-efficient in removing nutrients and pesticides from agrochemical wastewater, highlighting their potential as pollution control technologies.
Article
Ecology
V. Carrillo, G. Gomez, G. Vidal
Summary: In this study, phosphorus uptake by common and ornamental plants in pilot-scale horizontal subsurface flow constructed wetlands (CWs) with monocultures and polycultures was investigated. The results showed that the cold season had better performance, with higher phosphorus uptake by ornamental plants in the polyculture.
ECOLOGICAL ENGINEERING
(2022)
Article
Environmental Sciences
Yungui Li, Xueying Bai, Ruonan Ding, Wenxuan Lv, Ying Long, Liang Wei, Fachun Xiang, Rong Wang
Summary: This study investigated the sorption characteristics of natural manganese ore (NM) and its removal efficiency of ammonium and phosphorus from WWTP effluent in a simulated vertical flow NM constructed wetland (NM-VFCW). The results showed that NM could effectively sorb ammonium and phosphorus with a high removal efficiency, particularly for phosphorus. The manganese ore sand is highlighted as a powerful substrate for simultaneous advanced removal of phosphorus and ammonium in constructed wetland systems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Xiaojin Hu, Xiaodong Wan, Wei Tan, Huijun Xie, Linlan Zhuang, Jian Zhang, Shuang Liang, Zhen Hu
Summary: Iron oxides can nourish iron reducing bacteria and increase available electrons in constructed wetland systems. The addition of limonite improved nitrogen removal efficiency but excessive addition may induce phosphorus release. The study highlights the importance of balancing iron cycling for improved nutrient removal in wetlands.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Shuhang Wang, Haoran Yang, Feifei Che, Wei Huang, Dianhai Yang
Summary: This study investigated rural domestic sewage treatment facilities in two urban areas in Jiaxing and found high concentrations of total phosphorus and ammonia nitrogen in the plain river network. A new synthetic filler (FA-SFe) was selected to enhance nitrogen and phosphorus reduction in constructed wetlands, highlighting the importance of fillers. Experiments showed the high adsorption capacity of FA-SFe, with removal rates of ammonia nitrogen and total phosphorus reaching 71.3% and 62.7% respectively in actual wastewater treatment.
FRONTIERS IN CHEMISTRY
(2023)
Article
Agricultural Engineering
Tongtong Zhou, Jiangong Liu, Zhiyang Lie, Derrick Y. F. Lai
Summary: This study investigated the effects of different carbon substrates on the treatment efficiency of hydroponic wastewater using vertical flow constructed wetlands. The addition of sucrose and common reed litter improved the removal of nitrogen and phosphate, and the common reed litter also reduced the emission of greenhouse gases.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jie Wang, Ling Xia, Jieyu Chen, Xiaoning Wang, Hu Wu, Dapeng Li, George F. Wells, Jun Yang, Jie Hou, Xugang He
Summary: This study demonstrated the feasibility of achieving phosphorus removal through enhanced biological phosphorus removal (EBPR) in an intermittent aeration constructed wetland (CW). The integration of EBPR with simultaneous nitrification-endogenous denitrification (SNED) significantly improved phosphorus and nitrogen removal efficiency, providing a novel approach for advanced nutrient removal in CWs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Agronomy
I. D. Tsakmakis, N. P. Kokkos, G. D. Gikas, V. Pisinaras, E. Hatzigiannakis, G. Arampatzis, G. K. Sylaios
AGRICULTURAL WATER MANAGEMENT
(2019)
Article
Environmental Sciences
Ioanna Zotou, Vassilios A. Tsihrintzis, Georgios D. Gikas
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2019)
Article
Engineering, Environmental
Ioanna Zotou, Vassilios A. Tsihrintzis, Georgios D. Gikas
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2020)
Review
Engineering, Marine
Panagiota Keramea, Katerina Spanoudaki, George Zodiatis, Georgios Gikas, Georgios Sylaios
Summary: Several oil spill simulation models are used globally to predict the evolution of oil slicks. This study reviewed eighteen state-of-the-art models and found that many do not account for key physical processes and lack timely response capabilities. Areas for improvement include more comprehensive parameterization of oil dissolution, biodegradation, entrainment, and size distribution prediction.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Agronomy
I. D. Tsakmakis, G. D. Gikas, G. K. Sylaios
Summary: The study explored the relationship between high-resolution NDVI data and on-site CC, using it for operational validation and improvement of crop growth models. Results showed that remotely acquired CC time series can be successfully used as an alternative means for validating CC simulations, while re-estimated parameters enhanced model performance in simulating CC, biomass, and yield. No significant differences were observed in soil water content simulation.
AGRICULTURAL WATER MANAGEMENT
(2021)
Article
Environmental Sciences
Paraskevas Parlakidis, Theodoros Mavropoulos, Zisis Vryzas, Georgios D. Gikas
Summary: This study investigated the efficiency of five constructed wetlands in removing Fluopyram from rinsing water produced during the cleaning of pesticide spraying equipment. The results showed that bioaugmentation, the presence of zeolite in porous media, and different plant species significantly affected Fluopyram removal efficiency. Specifically, bioaugmentation in wetlands with Phragmites australis and zeolite presence led to higher removal rates compared to other wetlands.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Georgios D. Gikas, Vassiliki A. Papaevangelou, Vassilios A. Tsihrintzis, Maria Antonopoulou, Ioannis K. Konstantinou
Summary: The study indicates that biodegradation and adsorption onto substrate were the most prevalent removal routes of the target EPs in CWs.
Article
Engineering, Chemical
Georgios D. Gikas, Zisis Vryzas, Ioannis Karametos, Vassilios A. Tsihrintzis
Summary: This study investigated the effectiveness of two pilot-scale constructed wetlands and six gravity filters in removing pyraclostrobin from polluted water. The results showed that constructed wetlands performed better in removing the fungicide compared to gravity filters. The feeding strategy also affected the removal efficiency of pyraclostrobin in the gravity filters.
Article
Engineering, Environmental
Georgios D. Gikas, Zisis Vryzas, Zouvanis Koshis
Summary: By constructing and evaluating six gravity filters, it was found that fine zeolite had the highest adsorption capacity for fluometuron and the hydraulic residence time was the most important parameter affecting fluometuron removal.
ENVIRONMENTAL PROCESSES-AN INTERNATIONAL JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Georgios D. Gikas, Paraskevas Parlakidis, Theodoros Mavropoulos, Zisis Vryzas
Summary: Despite the susceptibility of resistance development and the side effects to human health and the environment, the use of systemic fungicides has been increasing over the past decades. Many fungicides have the ability to enter water bodies and have a significant impact on non-target organisms. In order to reduce the risks associated with fungicides, researchers have explored alternative eco-friendly disease management approaches, with constructed wetlands being an effective and cost-efficient remediation technique.
Article
Engineering, Marine
Panagiota Keramea, Nikolaos Kokkos, Georgios D. Gikas, Georgios Sylaios
Summary: Over the past few decades, oil marine pollution has become a significant threat to global ocean health. This study used an oil spill model to test the dispersion properties of oil and examine the impact of accidental spills on the main tanker transportation route in the North Aegean Sea. Numerical simulations were conducted to understand the influence of turbulent kinetic energy on oil spreading and mass properties.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Paraskevas Parlakidis, Maria Soledad Rodriguez, Georgios D. Gikas, Christos Alexoudis, Greivin Perez-Rojas, Marta Perez-Villanueva, Alejo Perez Carrera, Alicia Fernandez-Cirelli, Zisis Vryzas
Summary: The presence of pesticide residues in groundwater, many years after their phase out in European Union verifies that the persistence in aquifer is much higher than in other environmental compartments. Although atrazine had been banned more than 18 years ago, it was detected frequently and their concentrations in some cases were over the maximum permissible limit. A human health risk assessment of pesticides in drinking water wells showed that the risk values were below the acceptable range, but the presence of atrazine residues caused concerns related to chronic toxicity.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Agronomy
Paraskevas Parlakidis, Ioanna Gounari, Aristidis Georgiou, George Adamidis, Zisis Vryzas, Georgios D. Gikas
Summary: This study aims to investigate the efficiency of four pilot-scale horizontal subsurface flow constructed wetlands in remediating myclobutanil and triticonazole. The results show that the removal rate of the fungicides is influenced by the wetland design and plant species.
Article
Environmental Sciences
Georgios D. Gikas, Dimitrios Lergios, Vassilios A. Tsihrintzis
Summary: This study investigated the possibility of using four water quality indices (WQIs) to evaluate the quality of small rivers in the Mediterranean region of Northern Greece. The selected WQIs were applied to three rivers, and the results showed that Prati's and CCME indices classified the rivers with comparable physicochemical parameters into the highest quality classes. The Oregon index was the strictest in assessing the water quality of ephemeral streams in the Mediterranean.
Article
Environmental Sciences
G. D. Gikas, G. K. Sylaios, V. A. Tsihrintzis, I. K. Konstantinou, T. Albanis, I Boskidis
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Ecology
Alexander M. Cancelli, Frank A. P. C. Gobas
Summary: A mechanistic model was developed to assess the removal efficiency of pollutants in a wetland system, particularly in oil sands process-affected water (OSPW). The model simulated wetland mechanisms of chemical removal and showed that sustained wetland treatment is feasible. It is a helpful tool to evaluate the feasibility of treatment systems and to assess trade-offs in wetland design and operation.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Prakash Singh Thapa, Hiromu Daimaru, Seiji Yanai
Summary: This study assessed the vegetation recovery and erosion condition in a landslide area in central Japan. The results show that the upper slope, where reforestation activities were implemented, has seen significant vegetation recovery and no significant erosion, while the lower slope lacks vegetation and has experienced continued erosion.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Mike Jerauld, Forrest Dierberg, Thomas DeBusk, Scott Jackson, Kevin Grace, John Juston
Summary: The Everglades Stormwater Treatment Areas (STAs) are constructed wetlands built to remove phosphorus (P) from agricultural and urban runoff in support of Everglades restoration. Research shows that the levels of calcium (Ca) and alkalinity (Alk) have an impact on phosphorus removal in these wetlands.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Kalindhi Larios, Stefan Gerber, Rafael Munoz-Carpena, Patrick Inglett, K. Ramesh Reddy, Michael Chimney
Summary: This study modeled the phosphorus biogeochemical dynamics in one of the best performing Everglades treatment wetlands and found that the complexity of the hydrological system significantly affected the simulated water column P concentration. The modeling tool developed in this study can guide future data collection and optimization efforts for treatment wetlands in the Everglades.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Jing Hu, Benjamin Baiser, R. Thomas James, K. Ramesh Reddy
Summary: This study examined the long-term phosphorus retention in Stormwater Treatment Areas (STAs) and identified the factors influencing their performance. The results showed that the operational performance of STAs improved over time. There were notable differences among individual STAs, with the co-precipitation of phosphorus with calcium playing a critical role in one of the STAs. This highlights the complexity of phosphorus removal in STAs and the need for site-specific management strategies.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Odi Villapando, K. R. Reddy, J. King
Summary: The biogeochemical response to different flow conditions within two parallel flow-ways in Everglades Stormwater Treatment Area (STA)-2 was studied. It was found that there was a gradual decrease in the total phosphorus (TP) concentration from inflow to outflow for both emergent aquatic vegetation (EAV) and submerged aquatic vegetation (SAV) dominated systems, with EAV showing a higher reduction rate. Significant increase in TP concentration was observed in the SAV system under no flow condition, possibly due to the production of particulate phosphorus (PP) through various mechanisms.
ECOLOGICAL ENGINEERING
(2024)
