Removal of arsenic, vanadium and/or nickel compounds from spent catecholated polymer

Patent · Wed Dec 31 23:00:00 EST 1986

OSTI ID:866227

Fish, Richard H ^[1]

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1. Berkeley, CA

Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20.degree. to 100.degree. C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.

• Research Organization: University of California
• DOE Contract Number: AC03-76SF00098
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4659684
• OSTI ID: 866227
• Country of Publication: United States
• Language: English

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/502/208/210/423/
10
100
20
achieve
acid
alcohol
alcoholic
alcoholic carbonate
alkali
alkaline
alkaline earth
alkyl
alkyl alcohol
amine
ammonium
anchored
anchored thereon
aqueous
aqueous acid
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arsenic
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catechol
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catecholated
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compounds
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crosslinked polystyrene
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diamine
divinylbenzene-crosslinked
divinylbenzene-crosslinked polystyrene
earth
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earth metals
elevated
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involves
ligands
ligands anchored
liquid
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metals
nickel
nickel compounds
petroliferous
petroliferous derived
petroliferous liquid
ph
polymer
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polystyrene
preferably
process
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regenerating
regenerating spent
regeneration
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step
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temperature
thereon
treating
treatment
vanadium