2020
DOI: 10.31072/rcf.v10i2.813
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Características Físicas, Químicas E Físico-Químicas De Calcário Extraido Do Suldoeste Da Região Amazônica

Abstract: O presente trabalho tem por objetivo, analisar a concentração de cálcio, magnésio, Poder de Neutralização, Reatividade e Poder Relativo de Neutralização Total em calcário da região Norte. Foram determinados os teores totais de óxidos de cálcio (CaO) e magnésio (MgO) por volumetria utilizando o EDTA (ácido etilenodiaminotetracético) como agente complexante, solução tampão em pH = 10, e como indicador complexométrico, o corante orgânico Negro de eriocromo T. As análises foram realizadas em dez amostras de calcár… Show more

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“…This makes the shell powders superior to commercial calcitic limestones. According to a study by Parizotto et al (2018), the shell powders have approximately 32.9% CaO, 64.0% NP, and 37.8% TRNP, which are higher and/or similar to the values found in dolomitic limestones, which have 35-38% CaO, 98-102% NP, and 85-90% TRNP (Pivotto 2020). The chemical composition of the alternative products presents specific and usable characteristics for use in aquaculture, and can be considered great correctives for alkalinity and pH, with the ability to replace traditionally-used products.…”
Section: Discussionmentioning
confidence: 85%
“…This makes the shell powders superior to commercial calcitic limestones. According to a study by Parizotto et al (2018), the shell powders have approximately 32.9% CaO, 64.0% NP, and 37.8% TRNP, which are higher and/or similar to the values found in dolomitic limestones, which have 35-38% CaO, 98-102% NP, and 85-90% TRNP (Pivotto 2020). The chemical composition of the alternative products presents specific and usable characteristics for use in aquaculture, and can be considered great correctives for alkalinity and pH, with the ability to replace traditionally-used products.…”
Section: Discussionmentioning
confidence: 85%