Vermiremediation of dyeing sludge from textile mill with the help of exotic earthworm Eisenia fetida Savigny

Environ Sci Pollut Res Int. 2013 Sep;20(9):5975-82. doi: 10.1007/s11356-013-1612-2. Epub 2013 Mar 19.

Abstract

The aim of present study was for the vermiremediation of dyeing sludge from textile mill into nutrient-rich vermicompost using earthworm Eisenia fetida. The dyeing sludge was mixed with cattle dung in different ratios, i.e., 0:100 (D0), 25:75 (D25), 50:50 (D50), 75:25 (D75), and 100:0 (D100) with earthworms, and 0:100 (S0), 25:75 (S25), 50:50 (S50), 75:25 (S75), and 100:0 (S100) without earthworms. Minimum mortality and maximum population build-up were observed in a 25:75 mixture. Nitrogen, phosphorus, sodium, and pH increased from the initial to the final products with earthworms, while electrical conductivity, C/N ratio, organic carbon, and potassium declined in all the feed mixtures. Vermicomposting with E. fetida was better for composting to change this sludge into nutrient-rich manure.

MeSH terms

  • Animals
  • Cattle
  • Coloring Agents / chemistry
  • Coloring Agents / metabolism*
  • Industrial Waste*
  • Manure
  • Oligochaeta / metabolism*
  • Sewage / chemistry*
  • Soil
  • Solid Waste / analysis*
  • Textile Industry*
  • Time Factors

Substances

  • Coloring Agents
  • Industrial Waste
  • Manure
  • Sewage
  • Soil
  • Solid Waste