Document Detail


Evolution of temperature and chemical parameters during composting of the pig slurry solid fraction amended with natural zeolite.
MedLine Citation:
PMID:  15381214     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A 3-month experiment was conducted at a 300 kg scale to observe decomposition processes in pig slurry solids amended with two different doses of natural Slovak zeolite-clinoptilolite (substrates S1 and S2, 1% and 2% of zeolite by weight, respectively) in comparison with the control (unamended solids). The experimental and control substrates were stored outdoors in sheltered static piles at ambient temperatures ranging from 8.0 to 34.7 degrees C. The solid fraction (SF) of pig slurry was obtained by separation on vibration sieves prior to slurry treatment with activated sludge. The initial water content of the SF was 77.1% and no water was added to the piles during the storage. The temperature in the core of the piles was recorded throughout the experiment. By day 3 and 5 of storage (1% and 2% zeolite, resp.), the temperature in the substrates S1 and S2 exceeded 55 degrees C and remained above this level for 15 days while the highest temperature recorded in the control during the experiment was 29.8 degrees C. Samples from the core of the piles were taken periodically to determine pH, dry matter at 105 degrees C (DM), ash (550 degrees C/4 h), ammonia nitrogen (N-NH(4)(+)), nitrate nitrogen (N-NO(3)(-)), total nitrogen (N(t)), total phosphorus (P(t)); total organic carbon (TOC) was computed. The results showed that pH levels in S1 and S2 remained below that in the control for most of the thermophilic stage. This may be related to water-soluble ammonia and the affinity of zeolites to ammonium ions. A significant decrease in the level of ammonia nitrogen in water extracts from S1 and S2 was observed between days 5 and 35 in comparison with the control. The values of ash also differed and corresponded to the intensity of the decomposition processes in the respective substrates.
Authors:
J Venglovsky; N Sasakova; M Vargova; Z Pacajova; I Placha; M Petrovsky; D Harichova
Related Documents :
19084254 - Effect of post-digestion temperature on serial cstr biogas reactor performance.
2650584 - Influence of local and environmental temperatures on cutaneous circulation with use of ...
17079724 - Growth and photosynthesis of two mediterranean corals, cladocora caespitosa and oculina...
10820104 - Lipoxygenase inactivation in green beans (phaseolus vulgaris l.) due to high pressure t...
1211484 - Responses to cold in the midbrain sonar center of hibernating and tropical bats.
2328234 - A high-pressure, infrared spectroscopic study of the solvation of bilirubin in lipid bi...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bioresource technology     Volume:  96     ISSN:  0960-8524     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2004-09-21     Completed Date:  2005-04-21     Revised Date:  2006-04-17    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  181-9     Citation Subset:  IM    
Affiliation:
University of Veterinary Medicine, Research Institute of Veterinary Medicine, Hlinkova 1/A, 04001 Kosice, Slovak Republic. jan@venglovsky.com
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Ammonia / chemistry
Animals
Carbon / analysis
Hydrogen-Ion Concentration
Manure* / analysis
Nitrates / chemistry
Nitrogen / analysis
Phosphorus / analysis
Refuse Disposal / methods
Soil
Swine*
Temperature
Waste Management / methods*
Zeolites / chemistry*
Chemical
Reg. No./Substance:
0/Manure; 0/Nitrates; 0/Soil; 12173-10-3/clinoptilolite; 1318-02-1/Zeolites; 7440-44-0/Carbon; 7664-41-7/Ammonia; 7723-14-0/Phosphorus; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  A respirometric method for characterising the organic composition and biodegradation kinetics and th...
Next Document:  The issues of energy and carbon cycle: new perspectives for assessing the environmental impact of an...