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Title

STATISTICAL DESIGN OF EXPERIMENTS FOR OPTIMIZATION OF BATCH ADSORPTION CONDITIONS FOR REMOVAL OF REACTIVE RED 194 TEXTILE DYE FROM AQUEOUS EFFLUENTS.

Authors

Royer, Betina; Lima, EderC.; Cardoso, NataliF.; Calvete, Tatiana; Bruns, RoyE.

Abstract

Factorial and central composite design experiments were performed to maximize the percentage removal of hydrolyzed reactive red 194 (HRR) from a simulated textile effluent by using Brazilian pine fruit wastes. Solution pH, initial dye concentration, contact time, and adsorbent mass levels were systematically varied for both untreated and acid-treated wastes. Biosorbent dosage of 9.0 g L-1, pH of 2.0, and at least 7-8 h contact time resulted in 98% dye removal for the acid-treated wastes and 88% for the untreated wastes. Adsorption isotherms were determined for both materials at the optimized conditions, and the equilibrium data was better fitted to the Sips isotherm model.

Subjects

EXPERIMENTAL design; WASTE treatment; BRAZILIAN pine; SURFACE chemistry; ATMOSPHERIC temperature

Publication

Chemical Engineering Communications, 2010, Vol 197, Issue 5, p775

ISSN

0098-6445

Publication type

Academic Journal

DOI

10.1080/00986440903359004

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