2017
DOI: 10.19082/4312
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Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape

Abstract: Background and AimWater resources pollution control is one of the main challenges of our time for researchers. Colored wastewater discharges caused by textile industry activities has added to the concern. In this study, removal of Acid Orange 7 dye (AO7) using Kenya Tea residue absorbent (granular) has been studied.MethodsThis cross-sectional study was conducted in 2016. In this work, initially, tea residue was prepared in three forms of raw, treated with concentrated phosphoric acid, and carbonated, at temper… Show more

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Cited by 24 publications
(6 citation statements)
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“…This discharge of dye color is because of the breakdown of the azo bonds between the dye molecules. The dye degradation efficiency can be determined using the following equation whereas C o is the initial concentration of dye solution and C is the concentration of dye solution at any time t . ,,, The absorbance spectra of all of the hybrid samples and pure MXene are shown in Figure a–e The absorbance spectra of pure MXene at different times indicate the concentration of Congo red dye as well as its degradation efficiency from the catalytic solution . The MXene sheets are black, indicating that the sheets absorb all types of radiation (UV, vis, and NIR).…”
Section: Resultsmentioning
confidence: 99%
“…This discharge of dye color is because of the breakdown of the azo bonds between the dye molecules. The dye degradation efficiency can be determined using the following equation whereas C o is the initial concentration of dye solution and C is the concentration of dye solution at any time t . ,,, The absorbance spectra of all of the hybrid samples and pure MXene are shown in Figure a–e The absorbance spectra of pure MXene at different times indicate the concentration of Congo red dye as well as its degradation efficiency from the catalytic solution . The MXene sheets are black, indicating that the sheets absorb all types of radiation (UV, vis, and NIR).…”
Section: Resultsmentioning
confidence: 99%
“…This finding was different from existing research that tea residue was used as adsorbent to remove dyes. 14,15 Based on our previous work, through single factor and orthogonal experimental analysis of common substances in tea residue, epigallocatechin gallate was deciphered to be the key active component which was responsible for the enhancement effect on the decolorization performance by activating the functional bacteria. 16 …”
Section: Resultsmentioning
confidence: 99%
“…[21][22][23][24] The existing literature reports the sorbents that are capable of removing dyes only either at low pH, or at low or higher temperature. [25][26][27] Often the sorbent synthesis requires very high temperature. [6] Therefore, it is vital to develop sorbents which are efficient at ambient conditions and do not involve harsh synthetic route.…”
Section: Introductionmentioning
confidence: 99%
“…In this context, removal of toxic dyes by adsorption on suitable sorbent is compelling as it eliminates the possibility of formation of toxic side products . The existing literature reports the sorbents that are capable of removing dyes only either at low pH, or at low or higher temperature . Often the sorbent synthesis requires very high temperature .…”
Section: Introductionmentioning
confidence: 99%