Removal of arsenic(III) and arsenic(IV) ions from aqueous solutions with lanthanum(III) salt and comparison with aluminum(III), calcium(II), and iron(III) salts

Journal Article · Sat May 01 00:00:00 EDT 1999 · Water Environment Research

DOI:https://doi.org/10.2175/106143098X121833· OSTI ID:354314

Tokunaga, S; Yokoyama, S; Wasay, S A

Interactions of arsenic(III) and arsenic(V) ions with a lanthanum salt were studied with the aim of developing a new precipitation method for removal of arsenic from aqueous solutions. Performance was compared to those of aluminum, polyaluminum chloride (PAC), calcium, and iron(III) salts. Arsenic(III) was removed by iron(III) and lanthanum in a narrow pH range with less than 605 removal. Arsenic(V) was removed more efficiently by aluminum, PAC, iron(III), and lanthanum. Lanthanum was most effective, meeting Japanese effluent and drinking water standards by adding three times as much lanthanum as arsenic(V).

• Sponsoring Organization: USDOE
• OSTI ID: 354314
• Journal Information: Water Environment Research, Vol. 71, Issue 3; Other Information: PBD: May-Jun 1999
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
INDUSTRIAL WASTES
WASTE WATER
WASTE PROCESSING
ARSENIC
LANTHANUM
SALTS
COMPARATIVE EVALUATIONS
ALUMINIUM
CALCIUM
IRON
PERFORMANCE