title: Application of a biosorbent to soil: a potential method for controlling water pollution by pesticides.
abstract: Different strategies are now being optimized to prevent water from agricultural areas being contaminated by pesticides. The aim of this work was to optimize the adsorption of non-polar (tebuconazole, triadimenol) and polar (cymoxanil, pirimicarb) pesticides by soils after applying the biosorbent spent mushroom substrate (SMS) at different rates. The adsorption isotherms of pesticides by three soils and SMS-amended soils were obtained and the adsorption constants were calculated. The distribution coefficients (K d) increased 1.40-23.1 times (tebuconazole), 1.08-23.7 times (triadimenol), 1.31-42.1 times (cymoxanil), and 0.55-23.8 times (pirimicarb) for soils amended with biosorbent at rates between 2 and 75 %. Increasing the SMS rates led to a constant increase in adsorption efficiency for non-polar pesticides but not for polar pesticides, due to the increase in the organic carbon (OC) content of soils as indicated by K OC values. The OC content of SMS-amended soils accounted for more than 90 % of the adsorption variability of non-polar pesticides, but it accounted for only 56.3 % for polar pesticides. The estimated adsorption of SMS-amended soils determined from the individual adsorption of soils and SMS was more consistent with real experimental values for non-polar pesticides than for polar pesticides. The results revealed the use of SMS as a tool to optimize pesticide adsorption by soils in dealing with specific contamination problems involving these compounds.
authors.affiliation: Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain.
authors.forename: Alba
authors.initials: A
authors.lastname: Álvarez-Martín
authors.affiliation: Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain.
authors.forename: M Sonia
authors.initials: MS
authors.lastname: Rodríguez-Cruz
authors.affiliation: Departamento de Agricultura y Alimentación, Universidad de La Rioja, 51 Madre de Dios, 26006, Logroño, Spain.
authors.forename: M Soledad
authors.initials: MS
authors.lastname: Andrades
authors.affiliation: Instituto de Recursos Naturales y Agrobiología de Salamanca (IRNASA-CSIC), Cordel de Merinas 40-52, 37008, Salamanca, Spain. mjesus.sanchez@irnasa.csic.es.
authors.forename: María J
authors.initials: MJ
authors.lastname: Sánchez-Martín
mesh_terms: D000327:Adsorption; D000363:Agaricales / Q000737:chemistry; D000383:Agriculture; D010575:Pesticides / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D014230:Triazoles; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; D014230:Triazoles; C032910:triadimefon; C087114:tebuconazole
keywords: Biosorbent; Immobilization; Non-polar pesticides; Polar pesticides; Soil; Spent mushroom substrate; Water pollution
references.citation: J Hazard Mater. 2014 Apr 15;270:144-52
references.pmid: 24572271
references.citation: Appl Microbiol Biotechnol. 2012 Nov;96(4):863-73
references.pmid: 23053096
references.citation: Environ Sci Technol. 2001 Jun 1;35(11):2226-32
references.pmid: 11414023
references.citation: J Hazard Mater. 2014 May 30;273:207-14
references.pmid: 24742665
references.citation: J Agric Food Chem. 2004 May 19;52(10 ):3022-9
references.pmid: 15137848
references.citation: Environ Sci Pollut Res Int. 2015 Jun;22(11):8576-85
references.pmid: 25561264
references.citation: J Agric Food Chem. 2006 Oct 18;54(21):8163-70
references.pmid: 17032024
references.citation: Environ Sci Technol. 2011 Mar 15;45(6):2124-30
references.pmid: 21341701
references.citation: J Environ Qual. 2007 Oct 24;36(6):1793-802
references.pmid: 17965382
references.citation: Chemosphere. 2014 Mar;99:19-33
references.pmid: 24289982
references.citation: J Hazard Mater. 2011 Feb 15;186(1):540-50
references.pmid: 21144657
references.citation: Environ Sci Pollut Res Int. 2014;21(16):9785-95
references.pmid: 24809493
references.citation: J Environ Qual. 2012 May-Jun;41(3):814-22
references.pmid: 22565263
references.citation: Environ Sci Pollut Res Int. 2015 Mar;22(6):4336-49
references.pmid: 25296939
references.citation: Chemosphere. 2015 Jan;119:155-62
references.pmid: 24974225
references.citation: Environ Pollut. 2011 Mar;159(3):700-5
references.pmid: 21216056
references.citation: Sci Total Environ. 2015 Jan 15;503-504:58-68
references.pmid: 25034205
references.citation: Environ Sci Technol. 2007 May 1;41(9):3302-8
references.pmid: 17539541
references.citation: Environ Pollut. 2011 Dec;159(12):3269-82
references.pmid: 21855187
references.citation: J Agric Food Chem. 2008 Aug 13;56(15):6206-19
references.pmid: 18598049