Metal biosorption equilibria in a ternary system

Journal Article · Wed Mar 20 04:00:00 EST 1996 · Biotechnology and Bioengineering

DOI:https://doi.org/10.1002/(SICI)1097-0290(19960320)49:6<629::AID-BIT4>3.0.CO;2-Q· OSTI ID:207904

Chong, K H; Volesky, B ^[1]

---

1. McGill Univ., Montreal, Quebec (Canada). Dept. of Chemical Engineering

Equilibrium metal uptake performance of a biosorbent prepared from Ascophyllum nodosum seaweed biomass was studied using aqueous solutions containing copper, cadmium, and zinc ions in binary and ternary mixtures. Triangular equilibrium diagrams can graphically represent all the ternary equilibrium sorption data. Application of the multicomponent Langmuir model to describe the three-metal system revealed its nonideal characteristics, whereby the value of apparent dissociation constants for the respective metals differed for each system. This restricted the prediction of the ternary equilibria from the binary systems. However, some predictions of the ternary system behavior from the model were consistent with experimental data and with conclusions postulated from the three possible binary subsystems.

• OSTI ID: 207904
• Journal Information: Biotechnology and Bioengineering, Journal Name: Biotechnology and Bioengineering Journal Issue: 6 Vol. 49; ISSN BIBIAU; ISSN 0006-3592
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BIODEGRADATION
BIOREACTORS
CADMIUM
COPPER
FORECASTING
MATHEMATICAL MODELS
PERFORMANCE
SEAWEEDS
SORPTIVE PROPERTIES
WATER POLLUTION ABATEMENT
ZINC