Removal of selected metals from drinking water using modified powdered block carbon

Autor(es)

Campos, V. ^[1] ; Sayeg, I. J. ^[2] ; Buchler, P. M. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, EPUSP, BR-05713520 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Geosci, BR-05713520 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Environmental Geology; v. 55, n. 5, p. 1023-1028, SEP 2008.
• Citações Web of Science: 0

Resumo

This paper presents the possible alternative removal options for the development of safe drinking water supply in the trace elements affected areas. Arsenic and chromium are two of the most toxic pollutants, introduced into natural waters from a variety of sources and causes various adverse effects on living bodies. Performance of three filter bed method was evaluated in the laboratory. Experiments have been conducted to investigate the sorption of arsenic and chromium on carbon steel and removal of trace elements from drinking water with a household filtration process. The affinity of the arsenic and chromium species for Fe/Fe(3)C (iron/iron carbide) sites is the key factor controlling the removal of the elements. The method is based on the use of powdered block carbon (PBC), powder carbon steel and ball ceramic in the ion-sorption columns as a cleaning process. The PBC modified is a satisfactory and practical sorbent for trace elements (arsenite and chromate) dissolved in water. (AU)

• Processo FAPESP: 03/08818-0 - Estudo de pozolanas naturais brasileiras no controle de poluição ambiental
• Beneficiário: Valquiria de Campos
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 03/08819-7 - Estudo de materiais filtrantes para remocao de arsenito, arsenato e cromato da agua.
• Beneficiário: Pedro Mauricio Büchler
• Modalidade de apoio: Auxílio à Pesquisa - Regular