Calcium sulphate is decomposed at elevated temperature and in the presence of a carbon source into a calcium compound and sulphur dioxide. As starting material calciumsulphate anhydrite is used, which is obtained by recrystallizing crude phosphogypsum with H2SO4 at a concentration of 20-65 wt.-%...
It is said that lime sulfur is composed mainly of calcium polysulfides, of general formula CaSx, where x varies from 2 to 7. (That is, CaS2,CaS3,CaS4,CaS5...) It is also said that the reaction between lime sulfur and HCL produces copious amounts of hydrogen sulfide (H2S). But how...
Phosphogypsum (PG) is a massive industrial solid waste. In this paper, PG was purified by flotation method, and α-hemihydrate gypsum (α-HH) was prepared by the autoclaving method. The morphology of α-HH was adjusted by adding different doses of Maleic
The universal and deep-seated importance of phosphorus in biology, from its role as a structural component to the basic energy currency of all living cells, has long suggested that it was incorporated early in the history of life1. However, beyond its biological utility, recent advances in preb...
TDS is the matrix for determining the amount of inorganic material in a solution (calcium, magnesium, sodium, bicarbonate, chloride, sulfate, and dissolved metals). TDS and heavy metals have a strong positive association, indicating that heavy metals are the most critical factor in TDS (Table ...
During the first quarter's effort to Investigate the Effectiveness of Calcium Treated Coals in the Capture of Sulfur Gases Generated in Stage Fired Combustors, the following work has been done: (a) Task 1, the Literature Survey has been completed; (b) Task 2, Design and Construction of the...
Investigate the effectivness of calcium-treated coals in the capture of sulfur gases generated in staged fired combustors. Third quarterly technical progre... Investigate the effectivness of calcium-treated coals in the capture of sulfur gases generated in staged fired combustors. Third quarterly ...
(typically 500 to 900 °C) in an inert atmosphere or controlled steam flow. This heat treatment activates the chemical reaction between the activating agent and the carbon, developing a porous structure. However, the limitation of this method is that it requires higher energy consumption compared ...
The first step in the transfer of methyl group is the reaction of Met with ATP resulting in the formation of S-Adenosyl-L-methionine (AdoMet or SAM); a universal methyl donor. After donating the methyl group to acceptor molecules (DNA, RNA, amino acids, proteins, phospholipids etc.), the...
γ-Al2O3 is one of the most widely used catalysts or catalyst supports in numerous industrial catalytic processes. Understanding the structure of γ-Al2O3 is essential to tuning its physicochemical property, which still remains a great challenge. We repo