ORIGINAL RESEARCH
Carbon Dioxide Emission to the Atmosphere from Overburden under Controlled Temperature Conditions
L. Rogalski, A. Bęś, K. Warmiński
 
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Department of Air Protection and Environmental Toxicology, University of Warmia and Mazury in Olsztyn, Plac Łódzki 2, 10-726 Olsztyn, Poland
 
Pol. J. Environ. Stud. 2008;17(3):427–432
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ABSTRACT
Being a component of atmospheric air, carbon dioxide is widely distributed in nature and constantly exchanged between the atmosphere and ecosystems. It also serves as an indicator of the rate of processes taking place in the soil environment and reflects the rate of organic matter decomposition during industrial waste management and degraded land reclamation. Human activity may increase CO2 emission to the atmosphere, thus contributing to its higher concentration in atmospheric air. CO2 content of soil air is modified by a variety of factors, including temperature, humidity, porosity, root respiration, etc. CO2 emitted to the atmosphere is the product of numerous chemical processes, primarily organic matter decomposition under aerobic and anaerobic conditions, and urea decomposition. This paper presents experimental results concerning CO2 emission from light soil deposit in the form of overburden, before and after fertilization with sewage sludge. CO2 emission was determined in a controlled environment chamber at a temperature of 10, 20 and 30°C and a constant water capacity of 60%. It was found that both higher temperatures and the addition of sludge increased CO2 emission to the atmosphere. The observed relationships were confirmed by an analysis of variance, and correlations between the tested variables and CO2 emission were determined.
eISSN:2083-5906
ISSN:1230-1485