Evaluation of integrated ammonia recovery technology and nutrient status with an in-vessel composting process for swine manure

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The study investigated the effect of different initial moisture (IM) content (55, 60, 65, and 70%) of composting mixtures (swine manure and sawdust) for the production of nutrient rich manure, and the recovery of ammonia through a condensation process using a vertical cylindrical in-vessel composter for 56 days. The composting resulted in a significant reduction in C:N ratio and electrical conductivity (EC), with a slight increase in pH in all products. The NH3 were emitted notably, and at the same time the NO3-N concentration gradually increased with the reduction of NH4+-N in the composting mixtures. The overall results confirmed, the 65% IM showed the maximum nutritional yield, maturity and non-phytotoxic effects (Lycopersicon esculentum L.), with the results of ideal compost product in the following order of IM: 65% > 60% > 70% > 55%. Finally, the recovered condensed ammonia contained considerable ammonium nitrogen concentrations and could be used as fertilizer.

Original languageEnglish
Pages (from-to)365-371
Number of pages7
JournalBioresource Technology
Volume245
DOIs
Publication statusPublished - 2017

Scopus Subject Areas

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

User-Defined Keywords

  • Condensation
  • In-vessel composter
  • Physico-chemical changes
  • Phytotoxicity
  • Swine manure

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