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Potential of low-cost bio-adsorbents to retain amoxicillin in contaminated water.
Cela-Dablanca, Raquel; Barreiro, Ana; López, Lucia Rodríguez; Santás-Miguel, Vanesa; Arias-Estévez, Manuel; Núñez-Delgado, Avelino; Álvarez-Rodríguez, Esperanza; Fernández-Sanjurjo, María J.
Affiliation
  • Cela-Dablanca R; Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
  • Barreiro A; Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
  • López LR; Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
  • Santás-Miguel V; Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
  • Arias-Estévez M; Soil Science and Agricultural Chemistry, Fac. Sciences, Univ. Vigo, 32004, Ourense, Spain.
  • Núñez-Delgado A; Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain. Electronic address: avelino.nunez@usc.es.
  • Álvarez-Rodríguez E; Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
  • Fernández-Sanjurjo MJ; Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Univ. Santiago de Compostela, 27002, Lugo, Spain.
Environ Res ; 213: 113621, 2022 10.
Article in En | MEDLINE | ID: mdl-35697084
ABSTRACT
Sewage sludge as agricultural amendment is the main route of human-medicine antibiotics to enter soils. When reaching environmental compartments, these compounds can cause significant risks to human and ecological health. Specifically, the antibiotic amoxicillin (AMX) is highly used in medicine, and the fact that more than 80% of the total ingested is excreted increases the chances of causing serious environmental and public health problems. As the use of low-cost bio-adsorbents could help to solve these issues, this research focuses on the retention of AMX onto four by-products of the forestry industry (eucalyptus leaf, pine bark, pine needles, and wood ash) and one from food industry (mussel shell). To carry out this study, batch-type tests were performed, where increasing concentrations of the antibiotic (0, 2.5, 5, 10, 20, 30, 40 and 50 µmol L-1) were added to samples of 0.5 g of each bio-adsorbent. Eucalyptus leaf, pine needle and wood ash showed adsorption scores higher than 80%, while it was up to 39% and 48% for pine bark and mussel shell, respectively. For pine bark, wood ash and mussel shell, adsorption data showed good adjustment to the Freundlich and Linear models, while pine needles and eucalyptus leaf did not fit to any model. There was not desorption when the maximum concentration of AMX (50 µmol L-1) was added. Overall, eucalyptus leaf, pine needles and wood ash can be considered good bio-adsorbents with high potential to retain AMX, which has significant implications regarding their eventual use to reduce risks of environmental pollution by this antibiotic.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Soil Pollutants / Bivalvia / Pinus Type of study: Health_economic_evaluation / Prognostic_studies Limits: Animals / Humans Language: En Journal: Environ Res Year: 2022 Document type: Article Affiliation country: Spain

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Soil Pollutants / Bivalvia / Pinus Type of study: Health_economic_evaluation / Prognostic_studies Limits: Animals / Humans Language: En Journal: Environ Res Year: 2022 Document type: Article Affiliation country: Spain