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Reactive Dye Removal From Industrial Wastewater On Cotton Dust As A Bio Adsorbent
[Full Text]
AUTHOR(S)
Md. Abdul Khalque, Shaikh Sayed Ahammed, Saquib Ahmad Khan, K. Ayaz Rabbani, Md. Ekhtekharul Islam, Md. Shamim Alam
KEYWORDS
Adsorption, bio-adsorbent, cotton dust, industrial wastewater, reactive dye, sunfix red.
ABSTRACT
The current study investigates a new, low cost, locally available, eco-friendly bio-adsorbent, cotton (Gossypium herbaceum) dust, to remove reactive dyes from industrial effluent. The cotton dust used in the study was collected from the textile and manufacturing industry, where it was a waste product. Sunfix red, a reactive dye common in textile effluents, was used in the study to check the removal efficiency of the adsorbent. The effects of the variables- contact time, pH of dye solution, adsorbent dosage were investigated, and optimal experimental conditions were ascertained. The highest removal efficiency, 98.5%, was achieved at adsorbent/dye ratio by mass of 1.5:1 at pH 8 in 120 minutes contact time. Raw textile wastewater samples were treated with the adsorbent and it was found that 1.5 g of adsorbent converted 100 mL of deep colored wastewater to transparent water at pH 8. At the same time, the pH, BOD, COD, TS, TDS, TSS of the raw wastewater decreased while the DO level increased.
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