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Glyphosate and aminomethylphosphonic acid degradation in biomixtures based on alfalfa straw, wheat stubble and river waste.
INTEC Instituto de Desarrollo Tecnológico para la Industria Química, Argentina.
RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
RISE - Research Institutes of Sweden, Bioscience and Materials, Agrifood and Bioscience.
INTEC Instituto de Desarrollo Tecnológico para la Industria Química, Argentina ; Ciudad Universitaria, Argentina .
2018 (English)In: Journal of Environmental Management, ISSN 0301-4797, E-ISSN 1095-8630, Vol. 228, p. 451-457, article id S0301-4797(18)31000-4Article in journal (Refereed) Published
Abstract [en]

The aim of the work was to evaluate novel biomixtures for their use on biopurification systems (BPS) in Argentina also called biobeds. Glyphosate and aminomethylphosphonic acid (AMPA) degradation was evaluated on biomixtures containing local materials: alfalfa straw (As), wheat stubble (Ws), river waste (Rw) and soil. Glyphosate, AMPA concentrations and biological activity were followed with time. Soil was used as control. Glyphosate initial concentration was 1000 mg kg-1. Glyphosate disappeared almost completely after 63 days in all tested biomixtures. For Ws, WsRw and AsRw glyphosate degradation was around 99% and for As 85%. The biomixture Ws showed the highest glyphosate degradation rate. In all cases AMPA was formed and degraded to concentrations between 60 and 100 mg kg-1. In the control with only soil, glyphosate was degraded 53% and AMPA concentration at the end of the test was 438 mg kg-1. We conclude that alfalfa straw, wheat stubble and river waste are local materials that can be used in the preparation of biomixtures since they showed higher glyphosate degradation capacity and less AMPA accumulation compared to the soil alone. Also, the presence of river waste did enhance the water retention capacity.

Place, publisher, year, edition, pages
2018. Vol. 228, p. 451-457, article id S0301-4797(18)31000-4
Keywords [en]
AMPA, Biobeds, Biopurification systems, Herbicide, Wastewater
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-35222DOI: 10.1016/j.jenvman.2018.09.009PubMedID: 30245269Scopus ID: 2-s2.0-85053793594OAI: oai:DiVA.org:ri-35222DiVA, id: diva2:1254796
Available from: 2018-10-10 Created: 2018-10-10 Last updated: 2019-02-05Bibliographically approved

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