Chemical Engineering

Download Activated carbon: classifications, properties and by James F. Kwiatkowski PDF

By James F. Kwiatkowski

Offers topical study within the research of activated carbon, along with themes corresponding to the outside chemistry of activated carbons and as catalyst helps; thermal processing of activated carbons from agro-industrial wastes; activated carbon as a steel oxide help; and, extra.

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Therefore, it is necessary to study the release of mercury from PAC+fly ash mixtures. Senior et al. [92] have studied the release of mercury by performing leaching analyses on fly ash. Two types of fly ash have been studied in this work: one produced from bituminous and another from a subbituminous coal. Their results show that little or no Hg can be detected in the leachate solution and so the resulted fly ashes can be buried in engineering landfills. 1. 1. Some of the PAC applications in the removal of contaminants Removal agent/process Treated phase PAC+Microfiltration Aqueous PAC PAC PAC PAC Aqueous Aqueous Aqueous Aqueous Cetyl trimethyl ammonium bromide (CTAB), Linear alkyl benzene sulfonate (LABS) Geosmin** Turquoise Blue-G Metsulfuron-methyl (a herbicide) Malachite green PAC, s-PAC* Aqueous Geosmin** PAC+Ozonation Aqueous A surfactant: sodium dodecylbenzenesulphonate PAC+Submerged anaerobic membrane bioreactor Aqueous Dissolved organic carbon (DOC) 89% Pollutant(s) Removal capability Ref.

Ztürk and Köse [86] have studied nitrite adsorption kinetics on PAC. Nitrogenous compounds like ammonia, nitrites and nitrates often are present in drinking water and wastewaters from agricultural, domestic and industrial sources. Nitrogen compounds can be appeared in water sources due to the application of fertilizers, animal excretions and industrial effluents. Nitrogen compounds can cause the eutrophication of rivers and lagoons and have health hazards for human [86]. The presence of high concentrations of these compounds in drinking water causes cyanosis in babies and the cancer of gastrointestinal system [86].

Zarei and M. Sheydaei CO2 can be efficiently removed from LFG using absorption by alkanolamine solutions. Gaur et al. [116] have converted the LFG to pure methane by adsorption on GAC and absorption by a mixed alkanolamine solution containing monoethanolamine and diethanolamine. In the work, toxic aromatic and chlorinated compounds were adsorbed on GAC in this order: carbon tetrachloride > toluene > chloroform > xylene > ethylbenzene > benzene > trichloroethylene ≈ tetrachloroethylene; Then, the gas stream was fed to a mixed solution of monoethanolamine and diethanolamine to absorb CO2.

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