Optimization of basic red 46 using chemically modified banana stalk
Abstract
This research was conducted to study the feasibilty of using banana stalk as
biosorbent for the removal of Basic Red 46 (BR 46) dye. The chemical
pretreatments were applied to the biosorbent by using hydrochloric acid (HCl) and
sodium hydroxide (NaOH). Batch biosorptions were conducted to investigate the
effect of biosorbent dosage (1 to 9 g/L) and pH (4 to 12) of dye solutions on
adsorption performance. The results revealed that treated biosorbent exhibited
better biosorption performance than untreated biosorbent. Scanning Electron
Microscope (SEM) proved that morphology surface of treated biosorbent high in
porosity compared to untreated biosorbent. Response Surface Methodology (RSM)
has been used in this study and optimum experimental conditions were found to be
8.40 g/L (HCl-treated biosorbent) and 7.40 g/L (NaOH-treated biosorbent) for
biosorbent dosage and 9.20 (HCl-treated biosorbent) and 9.40 (NaOH-treated
biosorbent) for pH.