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Reducing ammonia and greenhouse gas emission with adding high levels of superphosphate fertilizer during composting
- Source :
- Environmental science and pollution research international. 26(30)
- Publication Year :
- 2018
-
Abstract
- Previous studies revealed that superphosphate fertilizer (SSP) as an additive in compost can reduce the nitrogen loss and improve the effectiveness of phosphorus during composting. However, few studies have explored the influence of adding SSP with high levels on ammonia and greenhouse gas emission and the suitable amount for SSP addition according to a combined assessment of the composting process and product. The present study aimed to evaluate the impact of SSP with high additive amounts on NH3, CO2, CH4, and N2O emission and organic carbon loss. All piles were mixtures of pig manure and cornstalks with different levels of SSP addition including 10%, 14%, 18%, 22%, 26%, and 30% dry weight basis of raw materials. Compared with the control without SSP, the amount of NH3 cumulative emissions was decreased by 23.8–48.1% for the treatments with 10–30% SSP addition, and the emission of greenhouse gas including CO2, CH4, and N2O by 20.9–35.5% (CO2 equivalent) was reduced by 20.9–35.5%. Adding SSP with the amount exceeding 14% to compost could reduce CO2 emissions by 32.0–38.4% and more than 30% carbon loss at the end of composting but exceeding 26% had an adverse impact on maturity of the composts. Therefore, considering the maturity and safety of compost and gas emission reduction, 14–26% SSP was the optimum amount for composting addition, which is an effective and economical way to increase the nutrient level of carbon, nitrogen, and phosphorus in compost and reduce environmental risks.
- Subjects :
- Nitrogen
Swine
Health, Toxicology and Mutagenesis
chemistry.chemical_element
010501 environmental sciences
engineering.material
Raw material
01 natural sciences
Greenhouse Gases
Nutrient
Ammonia
Environmental Chemistry
Animals
Fertilizers
0105 earth and related environmental sciences
Compost
Phosphorus
Composting
General Medicine
Carbon Dioxide
Pulp and paper industry
Pollution
Manure
Carbon
Diphosphates
chemistry
Greenhouse gas
engineering
Environmental science
Fertilizer
Methane
Subjects
Details
- ISSN :
- 16147499
- Volume :
- 26
- Issue :
- 30
- Database :
- OpenAIRE
- Journal :
- Environmental science and pollution research international
- Accession number :
- edsair.doi.dedup.....f85cce2b66d5ab73709d96aa60e1d18d