Charged membrane ultrafiltration of multisalt systems: application to acid mine waters

Journal Article · Thu Mar 01 04:00:00 EST 1979 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496397908066958· OSTI ID:6073864

Bhattacharyya, D; Shelton, S; Grieves, R G

Ultrafiltration of dissolved and precipitated inorganic salts from synthetic and actual acid mine waters is investigated experimentally in a bench-scale, continuous-flow unit, utilizing negatively charged, noncellulosic membranes. The process is evaluated in terms of the simultaneous achievement of good water flux without membrane fouling and of adequate ultrafiltrate quality at high water recovery for water reuse operation. At a transmembrane pressure of 5.6 x 10/sup 5/ N/m/sup 2/ and a channel Reynolds number of 6,000, the flux drop is less than 30%, even with a concentrated acid mine water containing 16,000 mg/l total solids and a high CaSO/sub 4/ concentration. At 90% ultrafiltrate recovery, depending on the type of noncellulosic membrane utilized, 98% iron removal, 85% aluminum removal, and 50 to 73% calcium and manganese removals can be obtained at an average water flux from 6.4 x 10/sup -4/ to 13.2 x 10/sup -4/ cm/sec. The overall ultrafiltrate quality is considerably better than that observed with a lime precipitation process. 19 figures, 3 tables.

• Research Organization: Univ. of Kentucky, Lexington
• OSTI ID: 6073864
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 14:3; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID MINE DRAINAGE
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
ALUMINIUM
CALCIUM
CALCIUM COMPOUNDS
CALCIUM SULFATES
CHEMICAL ANALYSIS
ELEMENTS
HYDROGEN COMPOUNDS
INORGANIC COMPOUNDS
IRON
MANGANESE
MEMBRANES
METALS
OXYGEN COMPOUNDS
QUALITATIVE CHEMICAL ANALYSIS
REYNOLDS NUMBER
SALTS
SEPARATION PROCESSES
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
ULTRAFILTRATION
WATER
WATER TREATMENT