Removal of arsenic compounds from petroliferous liquids

Patent · Tue Jan 01 00:00:00 EST 1985

OSTI ID:865460

Fish, Richard H ^[1]

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1. Berkeley, CA

Described is a process for removing arsenic from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic bound to it from contacting petroliferous liquid as described above and involves: a. 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, b. separating the solids and liquids from each other. Preferably the regeneration treatment is in two steps wherein step (a) is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, steps (a) and (b) are repeated using a bicarbonate.

• Research Organization: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4518490
• OSTI ID: 865460
• Country of Publication: United States
• Language: English

Related Subjects

removal
arsenic
compounds
petroliferous
liquids
described
process
removing
derived
contacting
liquid
elevated
temperature
divinylbenzene-crosslinked
polystyrene
catechol
ligands
anchored
thereon
regenerating
spent
catecholated
bound
involves
treating
range
20
degree
100
aqueous
solution
carbonate
bicarbonate
ammonium
alkali
alkaline
earth
metals
ph
10
separating
solids
preferably
regeneration
treatment
steps
step
carried
alcoholic
containing
alkyl
alcohol
repeated
alkyl alcohol
aqueous alcoholic
regenerating spent
solution containing
aqueous solution
elevated temperature
alkaline earth
earth metal
earth metals
carbonate solution
catecholated polystyrene
spent catecholated
arsenic compounds
regeneration treatment
removing arsenic
petroliferous liquid
petroliferous derived
contacting petroliferous
derived liquids
divinylbenzene-crosslinked polystyrene
alcoholic carbonate
catechol ligands
anchored thereon
ligands anchored
petroliferous liquids
crosslinked polystyrene
/208/502/