نتائج البحث

* theoretical oxygen demand (ThOD) Determination of organic matter in a water or wastewater calculated on the basis of the chemical for * TOA Trace organic analysis.

* calciner A device in which the moisture and organic matter in phosphate rock is reduced in a combustion chamber. ...o alter its form and drive off a substance that was originally part of the compound.

* fatty acid Any of a class of lipids consisting of organic acids having the general formula R.COOH. * fermentation The conversion of organic matter to carbon dioxide, methane, and other low molecular weight compounds

...in water. (2) The total dissolved solids in water after all carbonates and organic matter have been oxidized. ...g out A procedure in which salt is added to a solution to cause an organic compound to precipitate so that it can be physically removed.

* reduction A chemical reaction where an element or compound gains electrons causing a decrease in valence. * refractory organics Organic substances that are dif.cult or unable to be metab­olized in a biological

* sandwich compound * semiconducting compound