New method for quantification of dye sorption using SBA mesoporous silica as a target sorbent

Abstract

In this work, a new method for the quantification of methyl violet cationic dye sorption onto SBA-15 mesoporous silica was developed. This method related the intensity of coloration of SBA-15 samples (after reached equilibrium sorption) within dye concentration in aqueous solution using Image-Pro Plus software. The sorption process of methyl violet dye onto SBA-15 was analyzed varying different initial parameters (dye concentration, mass of sorbent, pH of dye solution, and contact sorption time). SBA-15 proved as efficient sorbent for removal of methyl violet dye in contact time of 5 min, with maximum percentage of dye removal 99% at pH 8. The results obtained from Image-Pro Plus showed to be in good agreement with the sorption parameters obtained by UV/Vis spectroscopy, which has been the most commonly used instrument for quantification of dye sorption. The image analysis method proved well prediction of dye concentrations with maximum relative error of 1.83%. The advantages of this method are low cost and reliable quantitative evaluation with minimum of time.

Polymer‐derived ceramic aerogels as sorbent materials for the removal of organic dyes from aqueous solutions

“…For comparison purposes, the same experiment has been performed with the mesoporous silica, SBA‐15. SBA‐15 was chosen since there is a growing interest in using this adsorbent for the removal of various pollutants due to its high surface area, pore volume, and tunable pore size . The results of the adsorption experiments with the highest initial dye concentration are reported in Table and compared with similar results published in the literature for different types of active carbons.…”

Amino grafted MCM-41 as highly efficient and reversible ecofriendly adsorbent material for the Direct Blue removal from wastewater

“…M represents the molar concentration of amino groups determined by means of the calibration curve. [18] 2.4. Adsorption experiments.…”

“…[17] However, due to the high cost of production and low levels of regeneration of such a material, the market is trying to replace this adsorbent. [18][19][20][21][22][23] Additionally, the possibility to reuse both dyes and adsorbent materials is another important challenge of research related to the possibility of recycling dyes and adsorbent, in the viewpoint of a circular eco-sustainable economy (material recycling and product re-use). [6] Sorbents based on mesoporous silica have attained considerable attention due to their highly ordered structure, nanometer-sized pores, and their high surface area.…”

“…[24][25][26] More specifically, the ordered porous structure induces a much easier diffusion of several target molecules into the active sites, compared with the most part of the adsorbent materials. [18][19][20][21][22][23][24][25][26] For example, MCM-41 hybrid materials were studied for the adsorption of Acid Red G with adsorption capacities (qmax) of around 100 mg/g. [27] An adsorbent MCM-41-based was selected for the removal of Alizarin Yellow with qmax of 121.95 mg/g.…”

Expression of AMHR2 and C-KIT in cervical lesions in Uyghur Women of Xinjiang, China

“…This method can offer good results with less operator dependency and can increase efficiency, so has been used in many studies. [22]…”