Cited by 98Pharmaceutical and Antibiotic Environmental ImpactsEnvironmental remediation with nanomaterialsAdsorption and biosorption for pollutant removal

Attenuation of Nitrates, Antibiotics and Pesticides from Groundwater Using Immobilised Microalgae-Based Systems

Ferrando, Laura, Matamoros, Víctor·2020·Science of The Total Environment

Abstract

Groundwater pollution by nitrates and organic microcontaminants (OMCs) such as pesticides and antibiotics has increased in recent years due to the intensification of agriculture and livestock activities. Here we demonstrate, for the first time, the suitability of using microalgae immobilised in different materials (luffa sponge and polyurethane foam) to attenuate nitrates, antibiotics (sulfacetamide, sulfamethazine, and sulfamethoxazole), pesticides (bromacil, atrazine, diuron, bentazone, and mecoprop) from groundwater in two operational modes (batch and continuous-feeding). The results from the batch experiments show that OMC kinetic removal rates ranged from 0.01 to 0.18 d-1, with half-lives from 4 to 69 days. Immobilised microalgae in luffa and foam materials in the batch study was found to enhance the attenuation of selected OMCs from 36% to 51%, on average, after 10 operational days. Microalgae reactors in continuous-feeding operational mode out performed batch mode in terms of OMC removal (65% vs. 50%, on average) at a hydraulic residence time (HRT) of 8 days, whereas nitrate removal was greater in the batch experiments (81 vs. 48%, on average). OMC attenuation showed a high HRT dependence, but immobilised reactors were more resilient to the decrease in HRT. Further studies are needed, including the assessment of transformation products as well as the scale-up of the system to check the feasibility of the technology. Nevertheless, we expect our assay to be the starting point for the applicability of immobilised-microalgae-based systems for the treatment of polluted groundwater.

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Crossref · 10.1016/j.scitotenv.2019.134740

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  • Chlorella sp. and Spirulina (Arthrospira) sp. can treat many types of wastewaters, including municipal, aquaculture, swine, olive oil milling, distillery, confectionary, brine tapioca, tofu, rubber, paper mill, dye wastewaters, agricultural run-offs, and groundwaters.

    “Many examples of wastewater treatment by Chlorella sp. and Spirulina (Arthrospira) sp. have been published, as these can treat many types of wastewaters, including municipal, aquaculture, swine, olive oil milling, distillery, confectionary, brine tapioca, tofu, rubber, paper mill, dye wastewaters, agricultural run-offs, and groundwaters [203,209,210,211,212].”

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Authors
Ferrando, L., & Matamoros, V.
Affiliations
Consejo Superior de Investigaciones Científicas (ES)
Corresponding author
Matamoros, Víctor
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2020-02
Volume
703
Pages
134740
ISSN
0048-9697 (ISSN-L)
OpenAlex
W2984467432
Cited by
98
References
38
Citations by year
2026: 9 · 2025: 12 · 2024: 13 · 2023: 21 · 2022: 20 · 2021: 16 · 2020: 7
FWCI
3.22
Type
journal article
Language
en
Open access
closed
Locations
  • The Science of The Total Environment (publishedVersion)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
Funders
  • Consejo Superior de Investigaciones Científicas
  • Ministerio de Ciencia, Innovación y Universidades (CTM2017-91355-EXP)
Topics
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
Keywords
groundwater treatment, nitrate removal, antibiotics, pesticides, organic micropollutants, sulfonamides, atrazine, bromacil, diuron, bentazon, mecoprop, luffa sponge, polyurethane foam, hydraulic retention time, bioremediation
MeSH terms
Anti-Bacterial Agents, Nitrates, Pesticides, Water Pollutants, Chemical, Microalgae, Groundwater

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