Caracterization of humic acids from vermicompost of cattle manure composting by 3 and 6 months.

被引:12
作者
Landgraf, MD [1 ]
Alves, MR [1 ]
da Silva, SC [1 ]
Rezende, MOD [1 ]
机构
[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil
来源
QUIMICA NOVA | 1999年 / 22卷 / 04期
关键词
humic acid; vermicomposting; characterization;
D O I
10.1590/S0100-40421999000400003
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The main objective of this research was the characterization of the humic fractions isolated from vermicomposting, originating from cattle manure and treated with Eisenea foetida or Lumbricus rubellus, during 3 and 6 months. Elemental analysis and Infrared and UV-vis spectroscopy were used for their characterizations. The results obtained shown that both humic acids are very similar, but six-month humic acid shown lower percentage of organic material than three month humic acid. The spectroscopy analysis shown that the humic acid studied can be compared with other humic acids reported in the literature. By comparing both vermicomposts, the one produced in three months presents a great potential as fertilizer and it is more economical than the vermicompost produced during a six month period.
引用
收藏
页码:483 / 486
页数:4
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