Vermicomposting of tannery sludge mixed with cattle dung into valuable manure using earthworm Eisenia fetida (Savigny).
Bioresour Technol
; 102(17): 7941-5, 2011 Sep.
Article
en En
| MEDLINE
| ID: mdl-21676611
The present study revealed the role of earthworm in converting tannery sludge into a valuable product. Tannery sludge was toxic to earthworm, therefore it was mixed with cattle dung in different proportions viz. 0:100 (T(0)), 10:90 (T(10)), 25:75 (T(25)), 50:50 (T(50)) and 75:25 (T(75)) on dry weight basis. The minimum mortality and highest population buildup of worms was in T(0) mixture. Nitrogen, sodium, phosphorus and pH increased from initial in the range of 7.3-66.6%, 16.90-70.58%, 8.57-44.8% and 2.8-13.65%, respectively. On the other hand potassium, organic carbon and electrical conductivity decreased in the range of 4.34-28.5%, 7.54-22.35% and 32.35-53.12%, respectively. C:N ratio decreased from 20.53% to 47.36% in the final products. Transition metals increased significantly from the initial value and within the permissible limit. The result indicated that vermicomposting with Eisenia fetida is better for changing this sludge into nutrient rich manure in a short period of time.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oligoquetos
/
Aguas del Alcantarillado
/
Suelo
/
Curtiembre
/
Estiércol
Límite:
Animals
Idioma:
En
Revista:
Bioresour Technol
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2011
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Reino Unido