Spherically granulated titanium phosphate as exchanger for toxic heavy metals

Journal Article · Thu Dec 31 00:00:00 EST 1998 · Waste Management

DOI:https://doi.org/10.1016/S0956-053X(98)00024-5· OSTI ID:308161

Clearfield, A; Bortun, A I; Khainakov, S A; Bortun, L N ^[1]; Strelko, V V ^[2]; Khryaschevskii, V N ^[3]

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1. Texas A and M Univ., College Station, TX (United States). Chemistry Dept.
2. National Academy of Sciences, Kiev (Ukraine). Inst. for Sorption and Problems of Endoecology
3. Univ. of Podill`a, Khmel`nitskii (Ukraine). Chemistry Dept.

Spherically granulated titanium phosphate of formula TiO{sub 1.25}(OH){sub 0.47}(H{sub 2}PO{sub 4}){sub 0.77}(HPO{sub 4}){sub 0.13} 2.3H{sub 2}O (TiP) was synthesized by a gel method and its Na{sup +}, Ca{sup 2+} and Mg{sup 2+} ion substituted forms were prepared. Ion exchange of some divalent metal cations (Pb{sup 2+}, Cu{sup 2+}, Ni{sup 2+}, Mn{sup 2+}, Cd{sup 2+}) by TiP-Na, TiP-Mg and TiP-Ca was studied in batch and column conditions. It was found that the ion exchange performance of TiP depends on the ion form it is converted into and decreases in the order: TiP-Na > TiP-Mg > TiP-Ca. All TiP samples exhibit a high affinity for copper and especially lead ion and are able to remove these ions quantitatively in the presence of excess of Ca, Mg and Na ions. Thus spherically granulated titanium phosphate can be recommended for separation and selective grocery of some toxic divalent cations from industrial wastes and contaminated environmental streams.

• OSTI ID: 308161
• Journal Information: Waste Management, Vol. 18, Issue 3; Other Information: PBD: 1998
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
54 ENVIRONMENTAL SCIENCES
TITANIUM PHOSPHATES
SORPTIVE PROPERTIES
ION EXCHANGE
LEAD
COPPER
NICKEL
MANGANESE
CADMIUM
INDUSTRIAL WASTES
SOILS
GROUND WATER