Organic carbon decomposition

Pollard, P.C., and Moriarty, DJ.W. (1991) Organic carbon decomposition, primary and bacterial productivity, and sulphate reduction, in tropical seagrass beds of the Gulf of Carpentaria, Australia. Mar. Ecol. Prog. Ser. 69, 149. 

Table 4 Macrofaunal effects on organic carbon decomposition/remineralization.

Ise, T. and P. R. Moorcroft. 2006. The global-scale temperature and moisture dependencies of soil organic carbon decomposition an analysis using a mechanistic decomposition model. Biogeochemistry 80 217-231. 

The decomposition reactions of the preferred organic carbonate solvents are [152,192] ... 

NOTE The decomposition of DEHA should not be considered too seriously because it is very low initially. At 1,500psig, DEHA breakdown only amounts to 3%, as measured by the total organic carbon (TOC) content. Compare this to HQ, which breaks down to the extent of 43% at the same pressure. 

The annual primary production of organic carbon through photosynthesis is on the order of 70 Pg/yr. The major part of this carbon is decomposed or respired in a process that also involves the biogeochemical transformation of nitrogen, sulfur, and many other elements. Only a small part of the annual primary production of organic carbon escapes decomposition and is buried in marine sediments. On average. 

Chen, C.-T.A. (1978). Decomposition of calcium carbonate and organic carbon in the deep oceans. Science 201, 735-736. 

We have developed a compact photocatalytic reactor [1], which enables efficient decomposition of organic carbons in a gas or a liquid phase, incorporating a flexible and light-dispersive wire-net coated with titanium dioxide. Ethylene was selected as a model compound which would rot plants in sealed space when emitted. Effects of the titanium dioxide loading, the ethylene concentration, and the humidity were examined in batches. Kinetic analysis elucidated that the surface reaction of adsorbed ethylene could be regarded as a controlling step under the experimental conditions studied, assuming the competitive adsorption of ethylene and water molecules on the same active site. 

Golchin A, Baldock JA, Oades JM (1998) A model linking organic matter decomposition, chemistry, and aggregate dynamics. In Lai R, Kimble JM, Follett RF, Stewart BA (eds). Soil processes and the carbon cycle. CRC Press, Boca Raton, pp 245-266... 

This perturbation comes only from the carbonate in the approximately 100 meters thick surface mixed layer it contains about 0.15 g carbon/cm2, approximately equal to that in the atmosphere and to the organic carbon dissolved in the total depth of the sea. In the case of organic carbon, the total depth of the sea is involved because bacterial decomposition occurs at all depths, producing methane and carbon monoxide with both of which the sea is saturated, so that these gases are bubbling up from all depths. In comparison the sea is not saturated with C02 at any depth. 

Kuzyakov Y, Cheng W (2001) Photosynthesis controls of rhizosphere respiration and organic matter decomposition. Soil Biol Biochem 33 1915-1925 Kuzyakov Y, Domanski G (2000) Carbon inputs by plants into the soil. Rev J Plant Nutr Soil Sci 163 421—431... 

Water is modified by soil when added as either rain or irrigation [2], The modifiers are plants, plant roots, organic matter, organic matter decomposition products, carbon dioxide and other gases in the soil atmosphere, and dissolved inorganic compounds, commonly salts. Of particular importance is the change in pH that accompanies this modification of water. Thus, components obtained from soil by added extraction water will be significantly different from... 

CNF is an industrially produced derivative of carbon formed by the decomposition and graphitization of rich organic carbon polymers (Fig. 14.3). The most common precursor is polyacrylonitrile (PAN), as it yields high tensile and compressive strength fibers that have high resistance to corrosion, creep and fatigue. For these reasons, the fibers are widely used in the automotive and aerospace industries [1], Carbon fiber is an important ingredient of carbon composite materials, which are used in fuel cell construction, particularly in gas-diffusion layers where the fibers are woven to form a type of carbon cloth. 

The USDA (1999) defines organic wetland soils as having an organic carbon content of at least 12 % if the mineral fraction has no clay, 18 % if > 60 % clay, or 12-18 % if < 60 % clay. Further differentiation is based on the botanical origin of the organic matter-whether mosses, herbaceous plants, or woody plants-and its state of decomposition fibrists contain predominantly recognizable, little-decomposed plant debris, saprists predominantly well-decomposed plant debris. 

The object of the present study was to measure the ratios of organic carbon, nitrogen, and hydrogen in the detritus sinking in lake water and in the sediments and to discuss the decomposition processes of these components in order to gain basic knowledge concerning the mechanism of coal formation. 

In order to clarify the mechanism of microbiological decomposition of organic carbon and nitrogen of detritus in the lake water, the gaseous and nitrogenous components as well as the other chemical characteristics were determined in Lake Kizaki-ko, September 7-8, 1963 and October 28-31, 1963 when stagnation had greatly advanced in the lake. 

Solid state —> colloidal state — soluble or gaseous state In order that the relationship between the microbiological decomposition rates of organic carbon and nitrogen in the bottom sediments be known more fully, the following components were measured ... 

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