Evaluation of lead (II) retention by phosphoric acid and steam activated carbons

• Grant number: 05/04342-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2006
• End date: December 31, 2007
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal Investigator: Wagner Alves Carvalho
• Grantee: Cristiane Imenes de Campos Bueno Zanin
• Host Institution: Faculdade de Química. Pontifícia Universidade Católica de Campinas (PUC-CAMP). Campinas , SP, Brazil

Abstract

Industrial activity has contributed significantly for the increase in the heavy metals concentration in waters, representing an important source of contamination of the aquatic bodies, mainly when we consider that such íons can be spread trophic chain. Lead(II) residues possess high contamination capacity and they reach underground water, reservoirs and rivers, that are the sources of water supply for the cities. Amongst the processes of metal retention, we have the use of natural materials, as coals, zeolites and clays, that it comes deserving attention due to its reduced cost and simplicity in the process. We intend to verify the behavior of two activated Brazilian carbons, submitted to the treatment with phosphoric acid and vapor, as adsorbents, evaluating the capacity of adsorption, the influence of pH and temperature and the stability of adsorbent. Kinetic and thermodynamic parameters of the adsorption process will be obtained. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CRISTIANE IMENES DE CAMPOS BUENO ZANIN; FLÁVIA CAMARGO ALVES FIGUEIREDO; WAGNER ALVES CARVALHO. Remoção de chumbo(II) em sistemas contínuos por carvão ativado com vapor. Química Nova, v. 32, n. 9, p. 2318-2322, 2009-00-00. (05/04342-7)

CRISTIANE IMENES DE CAMPOS BUENO; WAGNER ALVES CARVALHO. Remoção de chumbo(II) em sistemas descontínuos por carvões ativados com ácido fosfórico e com vapor. Química Nova, v. 30, n. 8, p. 1911-1918, 2007-00-00. (05/04342-7)