Abstract
The use of humic acid for contaminant extraction from environmental matrices is an attractive concept because of the natural origin of the material and its low pollution potential. The problem of availability and the need for alkaline extraction were circumvented by the use of an unrefined leonardite humic acid (LHA) material used as received. This mined product has a high humic acid content, is inexpensive, and is available in bulk. LHA, applied without alkaline extraction, was used in the decontamination of water containing organic and inorganic test pollutants. The former included pyrene, difenzoquat, and rhodamine B base, while the latter were comprised of Pb2+, Zn2+, Ni2+, Cu2+, Sr2+, Cd2+, As3+, Ag+, and Mg2+. Simulated acidic waste solutions were treated by both batch precipitation and column extraction, with the pollutants applied singly and as mixtures. In the precipitation procedure, commercial lime was used as the coagulant, and virtually complete removal of the metals was achieved. Pyrene and ...
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
