Chemical characterization of residues from biodiesel production composted with mineral addition

Revista Brasileira de Engenharia Agrícola e Ambiental

Mendonça, Eduardo S.³  Silva, Ivo R.³  Lima, Claudivan C.²  Silva, Luis H. M.³  Roig, Asunción¹ 

[1]Campus Universitario de Espinardo, Espinardo, Spain

[2]Campus Satuba, Satuba

[3]UFV, Viçosa

关键词: organic residue;    compost;    CEC;    Brazilian legislation    INTRODUÇÃO Com a crise energética mundial tem se buscado alternativas renováveis para ampliar a matriz energética que possam substituir;    gradativamente;    o uso de combustíveis fósseis;    evitando;    com isso;    colapsos no abastecimento (Holanda;    2004);   

DOI  :  10.1590/S1415-43662009000300016

学科分类：农业科学（综合）

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

【 摘 要 】

The aim of this work was to evaluate the effect of different mineral enrichments during composting of biodiesel production residues on chemical characteristics of the end product. The following materials were used: sugar cane bagasse, ashes of sugar cane bagasse, poultry manure, filter cake and castor oil cake. These materials were mixed and enriched with mineral nutrients NPK, serpentinite and micaxist powdered rocks and gneiss powdered rocks, to obtain eight different composts. At 0, 30, 90 and 120 days after starting composting, these materials were sampled to measure pH, electrical conductivity, C, N, ashes, and, at the last sampling, CEC and total nutrients. Only the compost enriched with NPK (with N as ammonium sulphate) comply with the legislation pertinent to compost, while the composts that received filter cake and castor oil cake, with and without, mineral addition presented pH below the accepted limit and had C and N concentrations below the minimum established in the Brazilian legislation. The addition of serpentinite and micaxist powdered rocks contributed to raise the CEC of composts.

【 授权许可】

CC BY-NC