Adsorption of Heavy Metal Ions by Immobilized Phytic Acid View Full Text


Ontology type: schema:Chapter     


Chapter Info

DATE

1997

AUTHORS

George T. Tsao , Yizhou Zheng , Jean Lu , Cheng S. Gong

ABSTRACT

Phytic acid (myoinositol hexaphosphate) or its calcium salt, phytate, is an important plant constituent. It accounts for up to 85% of total phos­phorus in cereals and legumes. Phytic acid has 12 replaceable protons in the phytic molecule, rendering it the ability to complex with multivalent cations and positively charged proteins. Poly 4-vinyl pyridine (PVP) and other strong-based resins have the ability to adsorb phytic acid. PVP has the highest adsorption capacity of 0.51 phytic acid/resins. The PVP resin was used as the support material for the immobilization of phytic acid. The immobilized phytic acid can adsorb heavy metal ions, such as cad­mium, copper, lead, nickel, and zinc ions, from aqueous solutions. Adsorption isotherms of the selected ions by immobilized phytic acid were conducted in packed-bed column at room temperature. Results from the adsorption tests showed 6.6 mg of Cd2+, 7 mg of Cu2+, 7.2 mg of Ni2+, 7.4 mg of Pb2+, and 7.7 mg of Zn2+ can be adsorbed by each gram of PVP-phytic acid complex. The use of immobilized phytic acid has the potential for removing metal ions from industrial or mining waste water. More... »

PAGES

731-741

References to SciGraph publications

Book

TITLE

Biotechnology for Fuels and Chemicals

ISBN

978-1-4612-7497-1
978-1-4612-2312-2

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-1-4612-2312-2_65

DOI

http://dx.doi.org/10.1007/978-1-4612-2312-2_65

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1004029058


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