Soluble phosphate fertilizer production using acid effluent from metallurgical industry

dc.creatorMattiello, Edson M.
dc.creatorResende Filho, Itamar D.P.
dc.creatorBarreto, Matheus S.
dc.creatorSoares, Aline R.
dc.creatorSilva, Ivo R. da
dc.creatorVergütz, Leonardus
dc.creatorMelo, Leônidas C.A.
dc.creatorSoares, Emanuelle M.B.
dc.date2018-05-09T11:35:18Z
dc.date2018-05-09T11:35:18Z
dc.date2015-10-24
dc.date.accessioned2023-09-27T21:42:37Z
dc.date.available2023-09-27T21:42:37Z
dc.identifier0301-4797
dc.identifierhttps://doi.org/10.1016/j.jenvman.2015.10.012
dc.identifierhttp://www.locus.ufv.br/handle/123456789/19407
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8964990
dc.descriptionPreventive and effective waste management requires cleaner production strategies and technologies for recycling and reuse. Metallurgical industries produce a great amount of acid effluent that must be discarded in a responsible manner, protecting the environment. The focus of this study was to examine the use of this effluent to increase reactivity of some phosphate rocks, thus enabling soluble phosphate fertilizer production. The effluent was diluted in deionized water with the following concentrations 0; 12.5; 25; 50; 75% (v v−1), which were added to four natural phosphate rocks: Araxá, Patos, Bayovar and Catalão and then left to react for 1 h and 24 h. There was an increase in water (PW), neutral ammonium citrate (PNAC) and citric acid (PCA) soluble phosphorus fractions. Such increases were dependent of rock type while the reaction time had no significant effect (p < 0.05) on the chemical and mineralogical phosphate characteristics. Phosphate fertilizers with low toxic metal concentrations and a high level of micronutrients were produced compared to the original natural rocks. The minimum amount of total P2O5, PNAC and PW, required for national legislation for phosphate partially acidulated fertilizer, were met when using Catalão and the effluent at the concentration of 55% (v v−1). Fertilizer similar to partially acidulated phosphate was obtained when Bayovar with effluent at 37.5% (v v−1) was used. Even though fertilizers obtained from Araxá and Patos did not contain the minimum levels of total P2O5 required by legislation, they can be used as a nutrient source and for acid effluent recycling and reuse.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherJournal of Environmental Management
dc.relationVolume 166, Pages 140-146, January 2016
dc.rightsElsevier Ltd.
dc.subjectReuse
dc.subjectNatural phosphates
dc.subjectPartially acidulated phosphate
dc.titleSoluble phosphate fertilizer production using acid effluent from metallurgical industry
dc.typeArtigo


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