Evaluation of crushed recycled glass as a filtration medium of agrotoxic materials in aqueous media

Revista Brasileira de Engenharia Agrícola e Ambiental

Vieira, Delia do C.¹  Assis, Odilio B. G.¹ 

[1] Embrapa Instrumentação Agropecuária, São Carlos

关键词: filtration;    porous medium;    atrazine;    environmental remediation    INTRODUÇÃO Os agrotóxicos são determinantes para a boa produtividade na atividade agrícola;    seja para o controle de pragas;    doenças;    plantas daninhas ou para regular os processos fisiológicos das plantas;    seu uso;    contudo;    tem sido muitas vezes;    irracionalmente empregado na lavoura;    em proporções comumente superiores às ideais;    causando impactos e danos ambientais de difícil remediação;   

DOI  :  10.1590/S1415-43662009000300017

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

In this paper results and consideration about the use of recycled glass, as a granulated medium for filtration interaction with diluted agrotoxic materials in water, are presented. For this purpose, transparent bottles and glass containers were first fragmented and than crushed into pieces with sizes < 1 mm. Gravitational filtration tests were carried out in columns, in laboratorial scale. The herbicide atrazine was chosen as a standard contaminant due to its high toxicity and intensive use in Brazil. The results, from gas chromatography analysis, showed that the contamination was retained by the porous medium over all ranges of concentration (0.5, 1.0, 3.0, 10 and 15 mg L-1), which was dependent on the initial contamination degree. With regard to glass as a raw material, it showed itself to be a quite amenable material, potentially attractive for uses as a coadjutant medium in slow filtration.

【 授权许可】

CC BY-NC