Use of orange peel ash for removal of direct black 22 dye from aqueous environments

Gholami, H; Gholami, Maryam; Gholizadeh, Abdolmajid; Rastegar, A

doi:10.29252/jnkums.4.1.45

Cited by 2 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It shows that efficiency of dye removal is increased by increasing absorbent dosage, so that removal efficiency was increased to 98.41 and 96.97% respectively by increasing concentration from 1 to 10 g/l. In the study on Direct Black 22 dye removal from aqueous solution by activated carbon made from orange peel, it is reported that by increasing the adsorbent dosage from 0.1 to 1 g/l, respectively, removal efficiency increased as 87.1 and 95.2% ( 39 ). In the study on removal of acid orange 2 using egg shells from aqueous solutions, it is reported that with increasing adsorbent dosage, dye removal efficiency increased so that by increasing the adsorbent dose from 10 to 50 g/l, dye removal efficiency has been achieved as 35–74%.…”

Section: Discussionmentioning

confidence: 99%

Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape

Naraghi¹,

Zabihi²,

Narooie³

et al. 2017

Electron physician

View full text Add to dashboard Cite

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 temperatures of 350, 450 and 500 °C in the chemistry laboratory of Gonabad University of Medical Sciences. Then, efficiency of the above absorbents in the removal of Acid Orange 7 dye in initial concentrations of dye as 50–500 mg/l from water samples in terms of pH 2–10 and 1–10 g/l of adsorbent dose within 20 to 300 minutes was investigated. In addition, their subordination from Langmuir and Freundlich absorption isotherms was also determined. Concentration changes in Acid Orange 7 dye at a wavelength of 483 nm was determined by spectrophotometry and results were reported using descriptive statistics.ResultsResults showed that efficiency of Acid Orange 7 dye removal is higher in acidic pH and higher adsorbent dosage. The highest efficiency of Acid Orange 7 dye removal was 98.41% by raw tea residue absorbent at pH 2, reaction time was 120 minutes and initial concentration of dye was 50 mg/l, which was obtained at adsorbent dosage of 10 g/l. It was determined that the mechanism of absorption acceptably follows Freundlich absorption isotherm (R2=0.97).ConclusionDue to the availability and very low price, optimal performance of Kenya tea raw residue (granular) in Acid Orange 7 dye removal, it can be used as an efficient surface absorber in an absorber from colored wastewater.

show abstract

Section: Discussionmentioning

confidence: 99%

Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape

Naraghi¹,

Zabihi²,

Narooie³

et al. 2017

Electron physician

View full text Add to dashboard Cite

show abstract

Removal of Reactive Black 5 dye from Aqueous Solutions by Adsorption onto Activated Carbon of Grape Seed

et al. 2017

View full text Add to dashboard Cite

Background and purpose: The control of environmental pollution especially the pollution of water resources is one of the main challenges of researchers throughout the world. So, this study aimed to investigate the efficiency of reactive black 5 dye removal from aqueous solutions by adsorption onto activated carbon of grape seed. Materials and Methods: At first, the grape seed adsorbents were prepared in three forms of raw, treated by concentrated phosphoric acid, and calcined at 400, 600, and 800 C. Then, the efficiency of adsorbents to the removal of the Black 5 dye was studied in the concentrations of 100 to 700 mg/Lat pH 2-10 and 1-10 g/L of adsorbent during 120 min. The change of concentration was studied via the spectrophotometry procedure at the wavelength of 597 nm. Finally, the Langmuir and Freundlich adsorption isotherm was determined. Results:The results showed that the dye removal efficiency decreased by increasing pH, and increased by raising the contact time and the amount of adsorbent. So, in this process, the highest percentage of Black 5 dye removal (83.08%) was obtained at pH 2 and t 120 min using the raw adsorbent, 200 mg/L initial concentration of dye, and 10 g/L of carbon. The process considerably followed the Langmuir adsorption isotherm (R 2 0.999). Conclusion: The grape seed was found to have the highest level of efficiency in dye removal, and according to the availability of adsorbent and its low price, this method could be used as an applicable procedure for the removal of Black 5 dye from aqueous solutions.

show abstract

Use of orange peel ash for removal of direct black 22 dye from aqueous environments

Cited by 2 publications

References 1 publication

Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape

Removal of Acid Orange 7 dye from aqueous solutions by adsorption onto Kenya tea pulps; granulated shape

Removal of Reactive Black 5 dye from Aqueous Solutions by Adsorption onto Activated Carbon of Grape Seed

Contact Info

Product

Resources

About