Physical, Chemical, Microbiological and Parasitological Parameters in a Composting System of Vegetable Solid Residues | Science Publications

American Journal of Environmental Sciences

Iolanda Cristina Silveira Duarte¹  Jéssica Priscila Cavalcanti¹  Ramieri Moraes¹  Fernanda Alves da Silva¹  Mônica Aparecida de Almeida¹  Laine Rodrigues Lima¹  Jéssica Vilela da Cruz¹  Sandro Eugênio Pereira Gazzinelli¹  Elizabeth Soares de Jesus¹  Francisco Rafael Martins Soto¹  Maira Oliveira Silva¹  Sérgio Santos de Azevedo¹ 

关键词: pH;    Temperature;    Carbon Nitrogen Relation;    Intestinal Parasite Eggs;    Coliforms;   

DOI  :  10.3844/ajessp.2015.420.426

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

This work aimed to evaluate the physical, chemical, microbiological and parasitological parameters in a composting system of Vegetable Solid Residues (VSR). The work was carried out during four months and was constituted of a compost bed of 12 m3 of volume and the proportion used for its filing was of 6:1 (VSR: Sawdust). For the analysis of the microbiological and parasitological parameters16 sample collections were carried out for each parameter, at weekly intervals. The presence of Total Coliforms (TC), Thermotolerant Coliforms (TTC) and Intestinal Parasite Eggs (IPE). Regarding the physical and chemical parameters were analyzed: Temperature, pH and the Carbon and Nitrogen Relation (CNR). For the physical and chemical parameters the results revealed that there was a reduction in the CNR, with the final value of 14. The temperature presented little increase in the first five weeks, with the average value of 38.98°C and its stabilization in the last week with average value of 29.3°. The pH oscillated between neutrality to slightly acid. There was no reduction in the TC, but for the TTC there was a decrease in its count of 98.54%. In relation to the IPE, the composting system was capable of inactivating and eliminating them.

【 授权许可】

Unknown