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Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.71 [2012] >
JSIR Vol.71(01) [January 2012] >
| Title: | Comparative analysis on efficiency of reverse osmosis and alkaline precipitation to remove hazardous substances in a tanning wastewater |
| Authors: | Hintermeyer, B H
Curvale, R A
Padilla, A Pérez
Tavani, E L |
| Keywords: | Alkaline precipitation
Chromium(III)
Reverse osmosis (RO)
Tanning wastewater components |
| Issue Date: | Jan-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Reverse osmosis (RO) with
polyamide membrane of spiral wound and precipitation with commercial sodium
carbonate were
studied to remove hazardous
substances [chromium(III), sulfate, chloride and sodium] contained in a tanning
wastewater. RO
removed chromium(III) very
efficiently (99.83%) and with lower but appreciable yields the other three
constituents of liquid
effluent. Major inconvenience of
RO was fast decrease of permeate flux due to insufficient transmembrane
pressure used. In turn,
99.71% of chromium(III) was
separated with precipitation. Contents of sulfate, chloride and sodium remained
without noticeable
changes in filtrate liquid. Main
physicochemical features of concentrate obtained at the end of RO and of
precipitates produced
for different reaction times were established. |
| Page(s): | 79-84 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.71(01) [January 2012]
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