Evaluation of integrated ammonia recovery technology and nutrient status with an in-vessel composting process for swine manure
| Autor: | Obuli. P. Karthikeyan, Jung-Hoon Kwag, Duu-Jong Lee, Balasubramani Ravindran, Jonathan W C Wong, Jung Kon Kim, Kwang-Hwa Jeong, Ammaiyappan Selvam |
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| Rok vydání: | 2017 |
| Předmět: |
Environmental Engineering
Nitrogen Swine 020209 energy In-vessel composting Bioengineering 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences Ammonia chemistry.chemical_compound Soil Animal science 0202 electrical engineering electronic engineering information engineering Animals Fertilizers Waste Management and Disposal 0105 earth and related environmental sciences Moisture Renewable Energy Sustainability and the Environment Compost Chemistry Composting General Medicine Manure Agronomy visual_art engineering visual_art.visual_art_medium Phytotoxicity Fertilizer Sawdust |
| Zdroj: | Bioresource technology. 245 |
| ISSN: | 1873-2976 |
| Popis: | 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 56days. 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. |
| Databáze: | OpenAIRE |
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