This article reports the use of sodium carbonate-treated jute fibre (SCTJF), for the removal of an azo dye methyl red (MR). Face-centred CCD, based on RSM, experimental design has been used to acquire a definite number of experimental paths in order to ascertain improved experimentation towards reaching performance characteristics that are ideal in order to remove the dye (MR) dissolved in aqueous solution. Independent variable parameters used for dye removal and maximum adsorption capacity (Qmax) are: rotational speed (100 RPM, 150 RPM and 200 RPM), temperature (293 K, 303 K and 313 K), pH (3, 7 and 11) and adsorbent (SCTJF) dose (10 mg/L, 14 mg/L and 18 mg/L), where Qmax of the treated jute was considered to be the performance measure for dye removal. ANOVA was used in conjunction with a quadratic model of second order to explore the impact of operating variables and their elucidation. pH = 7.08, temperature = 299.57 K, SCTJF dose = 14.74 g/L, and stirring speed = 155 RPM were found to be the best process conditions. With a desirability of 0.98, the computed experimental Qmax (32.11 mg/g) and anticipated Qmax (31.7 mg/g) were in resonance within the domain threshold, indicating outstanding accuracy of the experimentation operations.

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Abstract-Sorption of Reactive Red 195 upon Na2CO3 modified Jute Fibre was studied for different concentrations of dye solutions (50, 100, 150 and 200 mg/L). Experiments were done considering parameters such as agitation time range, solution pH (4-12), adsorbent dose (10 gm/L -20 gm/L) and temperature (293, 303 and 313 K). The adsorption was highly supported at pH 6-7 and lower temperatures. Adsorption phenomena is better explained by Langmuir isotherm, the process of adsorption was best described by the second order pseudo-kinetic model. The maximum sorption ability (qmax) is found to be 22.47 mg/g. it was suggested that adsorption is atypical chemical process, exothermic and spontaneous, and in nature, the equilibrium sorption occurred at pH 7.0,. Absorption effects was studied and optimum adsorption was obtained at a jute dose of 15gm/L Keywords -Na 2 CO 3 Modified Jute Fibre (NaMJF), Reactive Red 195, Isotherm.