Open AccessHexavalent Chromium Removal from Wastewaters
Author(s) -
Cristina Modrogan,
Alexandra Raluca Miron,
Oanamari Daniela Orbuleț,
Cristina Costache,
M. Anghel
Publication year - 2011
Publication title -
bulletin of university of agricultural sciences and veterinary medicine cluj-napoca. agriculture
Language(s) - English
Resource type - Journals
eISSN - 1843-5386
pISSN - 1843-5246
DOI - 10.15835/buasvmcn-agr:6532
Subject(s) - hexavalent chromium , chromium , sorption , wastewater , waste management , pollutant , adsorption , environmental science , plating (geology) , environmental chemistry , environmental engineering , chemistry , metallurgy , materials science , engineering , geology , organic chemistry , geophysics
Althought have been done important progresses in developing countries in environment management field, heavy metals remain an important threat for human health and environment components. Unlike other pollutants classes, which can be biodegradable or completely destroyed, metals are not biodegradable and none of metals can not be destroyed. However, metals can be transformed into more toxic forms or more stable complex forms which can be more or less toxic. In this paper, was studied the removal of hexavalent chromium from waste water using solid waste (charcoal made from nutshells, furnace ash). The authors studied the influence of the following parameters: the initial pH of solution, the contact time on the sorption capacity. The adsorbent efficiency to the chromium removal was also studied using chromium-plating wastewater.