Next Article in Journal
Water Banks: What Have We Learnt from the International Experience?
Next Article in Special Issue
Treatment Wetland Aeration without Electricity? Lessons Learned from the First Experiment Using a Wind-Driven Air Pump
Previous Article in Journal
Delineating Groundwater Vulnerability and Protection Zone Mapping in Fractured Rock Masses: Focus on the DISCO Index
Previous Article in Special Issue
Dynamics of Bacterial Community Abundance and Structure in Horizontal Subsurface Flow Wetland Mesocosms Treating Municipal Wastewater
Open AccessArticle

Potential of Constructed Wetlands for Removal of Antibiotics from Saline Aquaculture Effluents

1
Centro Interdisciplinar de Investigação Marinha e Ambiental, CIIMAR/CIMAR, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Avenida General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
2
Departamento de Biologia, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Hans Brix
Water 2016, 8(10), 465; https://doi.org/10.3390/w8100465
Received: 16 August 2016 / Revised: 6 October 2016 / Accepted: 11 October 2016 / Published: 18 October 2016
(This article belongs to the Special Issue Constructed Wetlands for Water Treatment: New Developments)
This work aimed to evaluate the potential of constructed wetlands (CWs) for removal of antibiotics (enrofloxacin and oxytetracycline) and antibiotic resistant bacteria from saline aquaculture wastewaters. Removal of other contaminants (nutrients, organic matter and metals) and toxicity reduction and the influence of antibiotics with these processes were evaluated. Thus, nine CWs microcosms, divided into three treatments, were assembled and used to treat wastewater (doped or not with the selected antibiotics) between October and December of 2015. Each week treated wastewater was removed and new wastewater (doped or not) was introduced in CWs. Results showed >99% of each antibiotic was removed in CWs. After three weeks of adaptation, removal percentages >95% were also obtained for total bacteria and for antibiotic resistant bacteria. Nutrients, organic matter and metal removal percentages in CWs treated wastewater were identical in the absence and in the presence of each antibiotic. Toxicity in treated wastewaters was significantly lower than in initial wastewaters, independently of antibiotics presence. Results showed CWs have a high efficiency for removing enrofloxacin or oxytetracycline as well as antibiotic resistant bacteria from saline aquaculture wastewaters. CWs can also remove other contaminants independently of drug presence, making the aquaculture wastewater possible to be reutilized and/or recirculated. View Full-Text
Keywords: constructed wetlands; aquaculture wastewater; antibiotics; antibiotic resistance; Phragmites australis constructed wetlands; aquaculture wastewater; antibiotics; antibiotic resistance; Phragmites australis
Show Figures

Figure 1

MDPI and ACS Style

Bôto, M.; Almeida, C.M.R.; Mucha, A.P. Potential of Constructed Wetlands for Removal of Antibiotics from Saline Aquaculture Effluents. Water 2016, 8, 465.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop