Ks. Low et al., CARBONIZED SPENT BLEACHING EARTH AS A SORBENT FOR SOME ORGANIC-DYES, Journal of environmental science and health. Part A: Environmental science and engineering, 31(3), 1996, pp. 673-685
The potential of carbonized spent bleaching earth (CSBE) to remove/red
uce acid and basic dyes in aqueous solution was investigated. Results
show that CSBE was more effective in removing basic dyes. Parameters l
ike pH initial concentration, agitation rate, contact time and tempera
ture which affect the sorption process were studied As determined from
Langmuir isotherms the maximum sorption capacities of CSBE for Basic
Blue 3 and Methylene Blue were 102.6 and 94.5 mg/g respectively Hence
CSBE could be a useful sorbent in the treatment of baisc dyes in waste
water.