compost sample Articles
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Oxygen Uptake of Soil and Compost Samples
Oxygen Uptake of Soil and Compost Samples The Challenge AER-200 aerobic/anaerobic respirometer is ideally suited to determine in-situ rates of oxygen uptake in soil or compost samples – as may occur in the upper layers of soil under natural atmospheric conditions or in mixed compost reactors. This objective is accomplished by using a double-column reactor configuration as illustrated in Figure ...
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Measurement of Total Carbon in Soil and Compost by TOC Solid Sample Measurement System
Soil contains a large amount of organic matter such as plant residue that can be decomposed by microorganisms. This organic matter plays a key role in plant growth by maintaining good chemical and physical conditions in soil and is useful in improving and stabilizing the productivity of agricultural crops. Compost, a type of fertilizer in which organic matter is decomposed by microorganisms, ...
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Composting in flanders: the vlaco experience
Currently, the Flanders waste policy is based on the so-called ‘ladder of Lansink’. Six aerobic composting and one anaerobic digestion plant are operational for the treatment of biowaste. Some new composting plants are foreseen for 1999 and/or 2000. Composting retention time varies from 10 to 15 weeks. Green waste is treated in 15 open air composting plants. With respect to the use of compost ...
By ORBIT e.V.
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Stability measurement of Biosolids Compost by Aerobic Respirometry
Oxygen uptake of biosolids compost was measured during both laboratory and full-scale studies. Aerobic respirometry of solid samples of compost provided a precise measure of microbial activity. There was a noticeable decreasing trend in oxygen consumption over 25 days of composting, thereby indicating increasing stability. Moisture content also was found to affect the compost stability. During ...
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Compost maturity as expressed by phytotoxicity and Volatile organic acids
VOA in Composts Maturity is a qualitative trait of compost that may be expressed in a number of ways and is generally held to be relevant to plant performance. Volatile organic acids (VOA) have been cited to be responsible for phytotoxicity (plant growth suppression) when immature compost is used for growing plants (Manios et al., 1989). However, the production of VOA in compost has not been ...
By ORBIT e.V.
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Effect of composting on sludge contaminated with heavy metals from three different tannery streams and their bioavailability to plants
This research was conducted to study the influence of composting on tannery sludge contaminated by Cr, Cd, Zn, Cu, and Ni. Composting of sludge streams was performed in three different piles for 60 days. The results showed that the total concentration of heavy metals was increased with composting, except in the TT-3 sample where the concentrations of Cd, Cu, and Ni did not increase. The ...
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A statistical approach to evaluate compost genotoxicity
Parallel experiments were carried out to evaluate the induction of genotoxic effects in Vicia faba seedlings treated both with aqueous and organic extracts (dimethyl sulphoxide 5%) of 13 composts, or grown on soil samples to which different doses of the same composts were added. Pearsons linear correlation coefficient and multiple regression were used to study how these two different ...
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Composting in the Subarctic – Inputs
Greens and Browns: Composting Input Management Actium Composting equipment allows for environmentally sustainable disposal and reuse of organic materials in the form of compost. The program I work with invested in an Actium Batch Composter Drum, to primarily create local fertilizer for subarctic community gardens located in Fort Albany First Nation, Ontario, Canada. As a secondary benefit, the ...
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A cost-effective method for controlling compost air emissions
In October 2007, ECS began conducting trials at California State University Fresno (CSUF) to explore using the new patent pending AC Composter (ACC) covered aerated static pile system to manage dairy manure solids and comply with airquality standards. A two-zone portable pilot system was delivered by ECS and installed at the CSUF research dairy. This research is being conducted under a Phase I ...
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