ABSTRACT
The results of catalytic hydrotreating of a commercial mixture of 2,4'-DDT and 4,4'-DDT are reported. Experimental runs were carried out in a batch reactor (300 cm3) at constant hydrogen pressure (PH2 = 20 bar) and temperature. Temperature levels 150, 180, 200 and 230 degrees C were tested. A commercial sulphide Ni-Mo catalyst was adopted. The reacting medium was hexadecane. The kinetic constant and reaction order of the destruction reaction of 2,4'-DDT and 4,4'-DDT have been evaluated at temperature of 180, 200 and 230 degrees C. Destruction and removal efficiency (DRE) at T = 230 degrees C has been calculated.
Subject(s)
Complex Mixtures/chemistry , DDT/chemistry , Industrial Waste/prevention & control , Water Pollution, Chemical/prevention & control , Catalysis , Hydrogenation , Kinetics , Palmitates/chemistryABSTRACT
The catalytic hydrotreatment of chlorobenzene-thiophene mixtures has been studied using a Ni-Mo/gamma-Al(2)O(3) sulphided catalyst. Experimental runs were carried out in a batch reactor at constant temperature (T=300-320-340 degrees C) and hydrogen pressure (P=40 bar). The reaction medium was hexadecane. The experimental results show that chlorobenzene hydrodechlorination and thiophene hydrodesulphurization are not inhibited when chlorobenzene and thiophene are hydrotreated in admixture. The results that were obtained are of importance for the development of the hydrodechlorination (HDCl) process of chlorinated liquid wastes contaminated by other organic compounds.
