OBTENÇÃO DE INSUMOS A PARTIR DA RECICLAGEM DE PILHAS PARA APLICAÇÃO AGRÍCOLA: SUSTENTABILIDADE

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(1)OBTENÇÃO DE INSUMOS A PARTIR DA RECICLAGEM DE PILHAS PARA APLICAÇÃO AGRÍCOLA: SUSTENTABILIDADE.. Gabriella Lucena 1 Beatriz Farias Costa de Brito 2 Ana Paula de Oliveira Lopes Inacio 3 Udo Eckard Sinks 4. Resumo: Pilhas secas ou pilhas de Leclanché são dispositivos que utilizam reações de oxirredução para fornecer energia elétrica ao sistema somente até que a reação química se esgote. Esse produto é composto basicamente por um ânodo de zinco metálico (Zn0), um cátodo de grafite e MnO2 (dióxido de manganês) e um eletrólito formado por uma pasta de NH4Cl (cloreto de amônio), ZnCl2 (cloreto de zinco) e carvão em pó. Os elétrons passam do ânodo para o cátodo através do eletrólito, arranjados de maneira a transformar energia química em energia elétrica. Por possuírem uma produção elevada - cerca de 800 milhões de unidades apenas no Brasil - e serem indispensáveis no funcionamento de diversos aparelhos, como MP3 players, controles remotos, lanternas, rádios portáteis e etc., esses materiais são facilmente encontrados no cotidiano da população mundial e consequentemente descartado de forma incorreta após o uso. Esse descarte incorreto ocasiona a contaminação do solo, dos lençóis freáticos e cursos d’água devido aos metais tóxicos e pesados que podem se acumular por anos nesses meios, entrando em contato através da cadeia alimentar com a fauna e flora e assim, gerando diversos problemas. O projeto torna-se relevante, pois possibilita o início de pesquisas essenciais para os possíveis caminhos destinados à obtenção de insumos provenientes das pilhas, com o objetivo de reciclar esses produtos diminuindo, consequentemente seu impacto negativo no meio ambiente e produzindo materiais necessários à agricultura e outros fins. As pilhas são ricas em substâncias indispensáveis às plantas, como o zinco responsável pela transcrição do DNA (Ácido desoxirribonucleico); a amônia como fonte de nitrogênio (N) essencial a todas as proteínas e o manganês (Mn) necessário para a produção de cloroplastos. Sendo assim o propósito do projeto é reciclar as pilhas, combater problemas ambientais e extrair futuros nutrientes minerais, a fim de utilizá-los como adubo/aditivos para auxiliar o desenvolvimento das plantações na agricultura..

(2) Palavras-chave: Pilha; Agricultura; Nutrientes; Reciclagem.. Modalidade de Participação: Iniciação Científica. OBTENÇÃO DE INSUMOS A PARTIR DA RECICLAGEM DE PILHAS PARA APLICAÇÃO AGRÍCOLA: SUSTENTABILIDADE. 1 Aluno de graduação. glucena185@gmail.com. Autor principal 2 Outro. BeatrizFariasBrito@gmail.com. Co-autor 3 Outro. AnaPaulaOliveira1814@gmail.com. Co-autor 4 Docente. udosinks@unipampa.edu.br. Orientador. Anais do 9º SALÃO INTERNACIONAL DE ENSINO, PESQUISA E EXTENSÃO - SIEPE Universidade Federal do Pampa | Santana do Livramento, 21 a 23 de novembro de 2017.

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