Evaluation of pilot-scale in-vessel composting for Hanwoo manure management

Kwang Hwa Jeong, Jung Kon Kim, Balsubramani Ravindran*, Dong Jun Lee, Jonathan W C Wong, Ammaiyappan Selvam, Obuli P. Karthikeyan, Jung Hoon Kwag

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

30 Citations (Scopus)


The study investigated the effect of in-vessel composting process on Hanwoo manure in two different South Korea regions (Pyeongchang and Goechang) with sawdust using vertical cylindrical in-vessel bioreactor for 42 days. The stability and quality of Hanwoo manure in both regions were improved and confirmed through the positive changes in physico-chemical and phytotoxic properties using different commercial seed crops. The pH and electrical conductivity (EC, ds/m) of composted manure in both regions were slightly increased. At the same time, carbon:nitrogen (C:N) ratio and ammonium nitrogen:nitrate nitrogen (NH4+-N:NO3-N) ratio decreased to 13.4–16.1 and 0.36–0.37, respectively. The germination index (GI, %) index was recorded in the range of 67.6–120.9%, which was greater than 50%, indicating phytotoxin-free compost. Although, composted manure values in Goechang region were better in significant parameters, overall results confirmed that the composting process could lead to complete maturation of the composted product in both regions.

Original languageEnglish
Pages (from-to)201-206
Number of pages6
JournalBioresource Technology
Publication statusPublished - Dec 2017

Scopus Subject Areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

User-Defined Keywords

  • Hanwoo manure
  • In-vessel composting
  • Physico-chemical changes
  • Phytotoxicity


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