Changes of Physico–Chemical Properties of Pig Slurry During Storage

  • . Mansyur
  • Hong L Choi
Keywords: physico-chemical properties, slurry, storage times

Abstract

This study was aimed to determine changes of the characteristics of raw pig slurry as liquid organic fertilizer at various storage times. A completely randomized design was used in this research. The treatments were storage times, i.e.: 0, 15, 30, 45, and 60 days. Variables observed were loss of the slurry, degree of acidity (pH), electrical conductivity (EC), total solid (TS), volatile solid (VS), total chemical oxygen demand (tCOD), soluble chemical oxygen demand (sCOD), total nitrogen (TN), ammonia-nitrogen (NH3-N), nitrate-nitrogen (NO3-N), total phosphate (TP), and dissolve reactive phosphate (DRP). The results showed that storage time significantly affected all the observed variables, except the concentration of NO3-N and total phosphate content. The pH, TS, VS, DRP, and losses of slurry lost during storage times increased, while EC, TN, NH3-N, tCOD, and sCOD decreased. Physico-chemical properties of slurry during storage times changed, as a result of organic matter breakdown.


Author Biographies

. Mansyur

Department of Agriculture Biotechnology and Research Institute of Agriculture and Life Science, Seoul National University, Gwanak-ku Seoul 151-921, Republic of Korea 

Faculty of Animal Husbandry, University of Padjadjaran,

Jln. Raya Bandung - Sumedang, Km 21 Jatinangor, Sumedang, Indonesia
Hong L Choi

Department of Agriculture Biotechnology and Research Institute of Agriculture and Life Science, Seoul National University, Gwanak-ku Seoul 151-921, Republic of Korea 

Published
2012-01-30