Concentrations of CO₂ from composting under different treatments
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2021
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Abstrakt
The aim of this study was to analyse the production of CO2 concentrations in relation
to the composting technology used. Three loose piles of bio-waste (V1, V2, V3) were created
with the same volume. V1 reference pile was without any treatment. The biological preparation
containing probiotic bacteria was added to the pile V2. The pile V3 was treated once a week by
turning and watering. The degassing shafts were installed in each pile and the Multigas Monitor
1312 gas analyser with the Multipoint Sampler 1309 were used to measure of gas concentrations
during the degradation process. Continuous 24-hour measurements of carbon dioxide
concentrations from each pile were performed in the first, fourth, and seventh week of the
degradation process to compare the amount of concentrations between piles in those weeks. At
the beginning of the process, there were no significant differences in the production of CO2
concentrations from the monitored piles V1, V2 and V3. In the fourth week, significantly higher
values of CO2 concentrations were recorded from the pile V3 (P < 0.05), which was turned and
irrigated, than from V1 and V2. At week 7, significant differences were found between all
treatments at the significance level (P < 0.05), with the highest values from the V3 pile. It has
been shown that turning and humidifying results in the highest release of CO2 into the air, but in
a more rapid decomposition of the microorganisms, that reducing the time required to achieve a
stable compost product and increasing the efficiency of the composting plant.
Kirjeldus
Received: January 28th, 2021 ; Accepted: July 7th, 2021 ; Published: July 21st, 2021 ; Correspondence: ingrid.karandusovska@uniag.sk
Märksõnad
composting technology, carbon dioxide in compost, compost properties, environmental impacts, compost moisture, articles