Abstract
The sorption studies of coomassie brilliant blue (CBB) from aqueous solution have been carried out on wheat bran (WB). Coomassie brilliant blue on wheat bran was used to study the adsorption behavior under various parameters such as pH, dosage amount, and contact time. It was observed that under optimized conditions up to 95.70% dye could be removed from solution onto WB. Langmuir and Freundlich adsorption isotherms were used to elaborate the results. Freundlich model was found to be fitted well and favored multilayer adsorption. The Freundlich constants n and KF were determined as 0.53 and 2.5 × 10−4. Thermodynamic parameters such as ΔG, ΔH, and ΔS studied were taking into account, showed spontaneous and favorable reaction for coomassie brilliant blue on wheat bran. The maximum adsorption capacity q m was found to be 6.410 mg/g. The investigations show that non treated WB is a low-cost adsorbent for the removal of dyes from textile industry effluents.
Highlights
The inappropriate disposal of dyes in waste water constitutes an environmental problem and can cause damage to the ecosystem [1]
Wastewater containing dyes cause water pollution by lowering light penetration and photosynthesis and toxicity from heavy metals associated with pigments [2]
The objective of the present study was to assess the ability of locally available Bran for the removal of coomassie brilliant blue (CBB)
Summary
The inappropriate disposal of dyes in waste water constitutes an environmental problem and can cause damage to the ecosystem [1]. Reactive dyes are the most common dyes used due to their advantages, such as bright colors, excellent colorfastness, and ease of application but effluents are highly toxic to aquatic life. It reduces the photosynthetic activity and primary production. Commercial uses of dyes include the coloration of textile paper, leather, wood, inks, fuels, food items and metals This dye may cause problems in, respiratory tract, gastrointestinal tract, irritation to skin, and redness of eyes. Norie et al studied Okara quickly adsorbed coomassie brilliant blue (CBB) stain. The objective of the present study was to assess the ability of locally available Bran for the removal of coomassie brilliant blue (CBB). The removal of CBB was about 98% using wheat bran
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