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Calculation of two-electron reduction potentials for some quinone derivatives in aqueous solution using Møller-Plesset perturbation theory

Namazian, Mansoor; Siahrostami, Samira; Noorbala, Mohammad; Coote, Michelle
Fonte: Elsevier Publicador: Elsevier
Tipo: Artigo de Revista Científica
Relevância na Pesquisa
462.1827%
Møller-Plesset perturbation theory at the level of third order (MP3) is used to compute two-electron reduction potentials for some substituted benzoquinones in aqueous solution. The calculations are carried out at the MP2 and MP3 levels with the use of c

Use of an activated carbon from antibiotic waste for the removal of Hg(II) from aqueous solution

Budinova, Temenuzhka; Petrov, Nartzislav; Parra Soto, José Bernardo; Baloutzov, Venelin
Fonte: Elsevier Publicador: Elsevier
Tipo: Artículo Formato: 22195 bytes; application/pdf
ENG
Relevância na Pesquisa
462.1827%
8 pages, 6 figures, 4 tables.-- PMID: 17428604 [PubMed].-- Available online Apr 10, 2007.; Porous carbon has been prepared from waste antibiotic material by a chemical activation method using K2CO3 as an activating reagent. Carbon was studied systematically by the adsorption of nitrogen and iodine. It was found that the process parameters such as activation temperature and activation time are crucial for preparing high-quality activated carbon. The proper choice of the preparation conditions allows to produce microporous activated carbon with a micropore volume up to 0.492 cm3/g and a BET surface area of 1260 m2/g. Adsorption of mercury(II) from an aqueous solution on antibiotic carbon was investigated under the varying conditions of agitation time, metal ion concentration and pH. The adsorption capacity of the carbon is 129 mg/g.; Financial support from The Ministry of Education and Science (project CC-1401) is gratefully acknowledged.; Peer reviewed