Article
Environmental Sciences
Nicholas R. Wilkins, Howard Fallowfield, Ryan Baring
Summary: This study assessed the spatial distribution and accumulation concentrations of nutrients and contaminants in macrophytes in a constructed wetland as a performance indicator for wetland functionality and management. The results showed that concentrations of water chemistry parameters increased with distance from the inflow, while the height and biomass of macrophytes decreased with distance from the inflow.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ming Ye, Wenbin Pan, Wenxin Dai
Summary: Eutrophication is a global environmental issue that impairs water quality, threatens drinking water safety, and hinders regional economic development. This study proposes an effective technical program, utilizing a composite iron-carbon constructed wetland combined with a photocatalytic film, to restore eutrophic water. The experimental results show significant improvement in water quality after treatment, with a large number of microalgae on the wetland exerting a reoxygenation effect and enhancing the self-purification capacity of the water body. Enhancing the hydraulic performance of constructed wetlands and the activity of photocatalytic films can improve the remediation of eutrophic water bodies.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Soil Science
Xiaolei Sun, Simon Matthias May, Wulf Amelung, Ni Tang, Dominik Brill, Franko Arenas-Diaz, Daniel Contreras, Barbara Fuentes, Roland Bol, Erwin Klumpp
Summary: This study investigates the formation and content of water-dispersible colloids (WDCs) in the Atacama Desert and finds that they are influenced by both topography and sediment age. The distribution of WDCs differs between younger and older fan sections, with younger sections having a higher concentration near shrubs and older sections exhibiting larger variations in WDC content. Overall, this research highlights the unique role of colloids as tracers of soil development processes.
Article
Environmental Sciences
Aoi Kudoh, J. Patrick Megonigal, J. Adam Langley, Genevieve L. Noyce, Toshiyuki Sakai, Dennis F. Whigham
Summary: The expansion of wetland species relies on both clonal propagation and sexual reproduction. Clonal propagation allows plants to move and occupy space near parent plants, while sexual reproduction enables species to disperse and colonize open or disturbed sites. The balance between these two modes of propagation varies with plant density, but few studies have investigated the effect of density changes on reproductive allocation in response to global climate change.
ESTUARIES AND COASTS
(2023)
Article
Environmental Sciences
Chuanjie Xing, Xiangxi Xu, Zhenghe Xu, Rongzhen Wang, Lirong Xu
Summary: The experiments on biochar-constructed wetlands demonstrated that under certain hydraulic conditions, wetlands can effectively remove pollutants such as chemical oxygen demand, ammonia nitrogen, total nitrogen, and total phosphorus, with coconut shell and shell-constructed wetlands showing the best removal effect.
Article
Agronomy
Edwin Pino-Vargas, Edgar Taya-Acosta, Eusebio Ingol-Blanco, Alfonso Torres-Rua
Summary: This study used machine learning algorithms to predict potential evapotranspiration in La Yarada, Peru, and found that the indirect approach performed better in forecasting ETo for longer time intervals compared to the direct approach.
Article
Geology
J. A. Kidder, M. I. Leybourne, D. Layton-Matthews
Summary: Epithermal deposits are economically important sources of precious and base metals found in many metallogenic belts globally. However, exploration efforts are hindered by post-mineral cover in prospective districts. Hydrogeochemistry, the study of water-rock interaction, shows promise as an exploration tool in these environments. A case study of the Vaquillas epithermal deposit in northern Chile demonstrates the potential of hydrogeochemistry to identify anomalies and provide valuable insights for exploration in areas with significant post-mineral cover.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Environmental Sciences
Ping Tang, Li Chen, Wenming Zhang, Yongchao Zhou
Summary: This study proposes a strategy to alleviate bioclogging in constructed wetlands by increasing hydraulic loading. Experimental results demonstrate that increasing hydraulic loading can reduce biofilm growth rate and maintain higher removal efficiency.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Richwell Alufasi, Wilson Parawira, Alexandros Stefanakis, Phiyani Lebea, Ereck Chakauya, Walter Chingwaru
Summary: Contamination of freshwater by enteric pathogens is a major cause of diarrhoeal diseases in low to middle income countries due to poor wastewater management. Constructed Wetlands are a sustainable and cost-effective alternative for wastewater treatment, but the mechanisms for pathogen removal in these wetlands are not fully understood. This study investigated the internalization of Salmonella bacteria by Typha latifolia and Cyperus papyrus in hydroponic microcosms, providing new insights into the role of wetland plants in pathogen removal.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Janek Walk, Philipp Schulte, Melanie Bartz, Ariane Binnie, Martin Kehl, Ramona Moerchen, Xiaolei Sun, Georg Stauch, Christopher Tittmann, Roland Bol, Helmut Brueckner, Frank Lehmkuhl
Summary: The study investigated a soil chronosequence in the south-central coastal Atacama Desert, where soil formation is influenced by atmospheric deposition, salt accumulation, and aeolian dust influx. The findings reveal the processes and timescales of soil formation in coastal desert environments.
Article
Environmental Sciences
Nilton de Freitas Souza Ramos, Alisson Carraro Borges, Eder Carlos Lopes Coimbra, Gustavo Castro Goncalves, Ana Paula Ferreira Colares, Antonio Teixeira de Matos
Summary: The use of constructed wetland systems (CWS) is presented as an alternative for wastewater treatment due to their cost-effectiveness and easy operation. This study evaluated the hydrodynamics of CWS and the fitting of first-order mathematical kinetic models for pollutant removal. Three CWSs were built using expanded clay as filter support, with different plant species. The results showed the effectiveness of the CWSs and identified the best-fit models for organic matter decay.
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)
Article
Environmental Sciences
Jucimara Andreza Rigotti, Joana Postal Paqualini, Lucia Ribeiro Rodrigues
Summary: Constructed floating wetlands are widely used globally for water treatment and quality improvement. This study found that Typha domingensis showed superior root growth compared to Schoenoplectus californicus in a floating structure without growth substrates. Additionally, the adaptation of both species to the floating structure was successful, with Typha domingensis demonstrating higher nutrient removal efficiency in the final synthetic effluent solution. The establishment period of the macrophytes varied between species and played a significant role in increasing nutrient removal rates and root growth.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Christof Sager, Alessandro Airo, Kai Mangelsdorf, Felix L. Arens, Cornelia Karger, Dirk Schulze-Makuch
Summary: In the hyper-arid Atacama Desert, the microbial life in the Yungay region represents potential habitats in the fracture networks of salt-poor sand wedges outlining salt-cemented polygons. The habitability of the soil was assessed through the abundance of phospholipid fatty acids (PLFAs) and various soil characteristics. The results showed that the polygon subsurface exhibited increased habitability due to the soil's ability to retain water, while soil heterogeneities might affect the detection of microbial response in the sand wedge subsurface.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Engineering, Environmental
R. Shruthi, G. P. Shivashankara
Summary: In rural areas like India, low-cost and decentralized treatment units like vertical subsurface flow constructed wetlands (VSSF CW) are considered as a novel wastewater treatment system. Experiments show that the system can effectively remove organic matter, nitrogen, and phosphorus, with good removal efficiency.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Ecology
E. Andres, F. Araya, I. Vera, G. Pozo, G. Vidal
ECOLOGICAL ENGINEERING
(2018)
Review
Environmental Sciences
Cristina-Alejandra Villamar, Ismael Vera-Puerto, Diego Rivera, Felipe De la Hoz
Article
Engineering, Environmental
Fredy Moreno, Jaime Lara-Borrero, Luis Rojas, Ismael Vera-Puerto
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
C. Munoz, G. Gomez, A. I. Stefanakis, C. Plaza de los Reyes, I. Vera-Puerto, G. Vidal
APPLIED SCIENCES-BASEL
(2019)
Article
Green & Sustainable Science & Technology
Marcos Vinicius Bueno de Morais, Viviana Vanesa Urbina Guerrero, Edmilson Dias de Freitas, Edson R. Marciotto, Hugo Valdes, Christian Correa, Roberto Agredano, Ismael Vera-Puerto
Article
Environmental Sciences
Ismael Vera-Puerto, Matias Saravia, Jorge Olave, Carlos Arias, Erica Alarcon, Hugo Valdes
Article
Green & Sustainable Science & Technology
I Vera-Puerto, H. Valdes, C. Correa, R. Agredano, G. Vidal, M. Belmonte, J. Olave, C. Arias
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Environmental Sciences
Ismael Vera-Puerto, Hugo Valdes, Christian Correa, Valeria Perez, Roberto Gomez, Erica Alarcon, Carlos Arias
Summary: This study evaluated the performance of vertical subsurface flow treatment wetlands for treating rural domestic wastewater, showing that bed depth reduction did not have a significant impact on the removal of organic matter, solids, and ammonium, but had a significant influence on phosphate removal and a negative effect on pathogen removal. Partial saturation only positively influenced total nitrogen removal. The addition of a bottom layer of natural zeolite did not improve nutrient removal. The plant exhibited adaptation and positive development in both treatment systems.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Ismael Vera-Puerto, Joyce Escobar, Francisca Rebolledo, Valeria Valenzuela, Jorge Olave, Rocio Tijaro-Rojas, Christian Correa, Carlos Arias
Summary: In both arid and Mediterranean climates, the performance of vertical subsurface flow treatment wetlands (VSSF TWs) planted with Zantedeschia aethiopica was comparable to traditional plants. The effluent water quality met standards, while water balance remained stable. However, the lower height growth of Zantedeschia aethiopica could potentially impact the aesthetics of the wetlands.
Article
Environmental Sciences
Ismael Vera-Puerto, Hugo Valdes, Marcos Bueno, Christian Correa, Jorge Olave, Marcos Carrasco-Benavides, Flavia Schiappacasse, Carlos A. Arias
Summary: Reclamation of treated wastewater is seen as a viable option for reducing water deficit in Chile, especially in areas with arid and Mediterranean climates. Despite advancements in wastewater treatment coverage, the direct reuse of treated wastewater for irrigation is still low due to the lack of regulations and frameworks. Improving water reclamation in Chile faces challenges such as updating institutional and legal frameworks, involving rural communities, and studying emerging contaminants.
Review
Biochemistry & Molecular Biology
Hugo Valdes, Aldo Saavedra, Marcos Flores, Ismael Vera-Puerto, Hector Avina, Marisol Belmonte
Summary: The study highlights the importance of strict regulations by countries to prevent contamination of receiving water bodies by reverse osmosis concentrate, as well as the adoption of circular economies by desalination plants. Currently, synergizing conventional and emerging technologies is the most efficient method to mitigate the environmental impact of desalination processes.
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
Environmental Sciences
Ismael Vera-Puerto, Jose Campal, Sandra Martinez, Laura Cortes-Rico, Hadher Coy, Sheyie Tan, Carlos A. Arias, Gustavo Baquero-Rodriguez, Diego Rosso
Summary: This research evaluated the oxygen transfer efficiency in beds to be used as aerated constructed wetlands using diffused aeration systems. The results showed that oxygen transfer efficiency was negatively influenced by environmental conditions, especially altitude, and that the size of the gravel used in the bed is related to the oxygen transfer efficiency.
Article
Engineering, Environmental
Ismael Vera-Puerto, Hugo Valdes, Christian Correa, Jorge Olave, Valeria Perez, Carlos A. Arias
Summary: The study aimed to evaluate the performance of modified vertical flow treatment wetlands (VF-TWs) with different depths and media for treating domestic wastewater in rural areas with flow variations. The results showed effective removal of total solids, organic matter, and pathogens for both normal (VF-N) and modified (VF-M) VF-TWs. However, VF-M showed inconsistent removal of total nitrogen and below 60% removal of phosphate, indicating a need for further improvements and optimization in total nitrogen removal.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Chemical
Ismael Vera-Puerto, Jorge Olave, Suzy Tapia, Wladimir Chavez
DESALINATION AND WATER TREATMENT
(2019)
