Thin and thick target PIXE analyses to assess the mechanism of Cu2+ removal by Egeria densa.
In this work the PIXE technique was used to study the mechanism of metal sorption by dead biomass. Several batch copper-sorption experiments were performed by using Egeria densa biomass. PIXE measurements were performed in solid and liquid samples. Element concentrations in biosorbent samples were determined using the Clara software. Based on the mass balance among the major elements in the liquid and solid phases before and after the Cu-removal experiments, an ion exchange process is suggested as the main mechanism.
Department of Chemical Engineering-Postgraduate Program, West Parana State University, Campus of Toledo, Rua da Faculdade 645, Jd. Santa Maria, 85903-000 Toledo, PR, Brazil. Electronic address: f.espinoza@terra.com.br.
F R
FR
Espinoza-Quiñones
A N
AN
Módenes
G H F
GH
Santos
C E
CE
Borba
M A
MA
Rizzutto
Mauro A S S
MA
Ravagnani
D000327:Adsorption; D018533:Biomass; D003300:Copper / Q000302:isolation & purification*; D004785:Environmental Pollutants / Q000302:isolation & purification; D031321:Hydrocharitaceae; D007475:Ion Exchange Resins; D013052:Spectrometry, X-Ray Emission / Q000379:methods / Q000706:statistics & numerical data
D004785:Environmental Pollutants; D007475:Ion Exchange Resins; D003300:Copper
Biosorption; Copper removal; Ion exchange; PIXE