Abstract
In recent years, the remediation of hazardous organic dye-contaminated aquatic habitats has been a key research priority for environmental and chemical engineers. The goal of this research was to see how well malachite green adsorbs from waste water in a continuous column system having fixed bed. A biosorbent made from waste materials such as hen feathers has been shown to extract the water-soluble malachite green colour from waste water. The adsorption potential of malachite green dye ions in a continuous flow adsorption column is investigated in this work. The hen feathers' performance in the fixed bed column was assessed under a variety of operating circumstances, including bed height in the range 6-10cm; flow in the range 4-12ml/min, and starting concentration (10-30 mg/l). In comparison to other testing settings, the bed height (8cm), flowrate (12ml/min), and maximum input concentration (20mg/l) resulted in the highest malachite green absorption of 2.829mg/g. The column experimental data collected under various conditions was evaluated using three distinct models namely 1. Bohart-Adams model, 2 Yoon-Nelsons model, and 3 BDST model, all of which produced a decent estimation of the breakthrough curve. The findings from the Yoon-nelson and BDST models, on the other hand, were more favourable. The several characteristics of the hen feathers were studied using FTIR studies. The activated hen feather powder was a successful potential bio sorbent for the malachite green from aqueous phase.
Highlights
Dyes are more stable and harder to remove from effluents owing to their complicated aromatic molecular constitution and artificial foundation
Natural dyes and artificial dyes are the two types of dyes. They are classified into various types namely azo, anthraquinone, phthalocyanine, aromatic, nitro dyes etc based on their molecular structure
The identification of the functional groups involved in dye sorption is made possible by band shifts and variations in signal strength
Summary
Dyes are more stable and harder to remove from effluents owing to their complicated aromatic molecular constitution and artificial foundation. Because the effluent is harmful to aquatic life, it must be treated before being discharged into the system. It can't be utilised as a source of water without first being treated. Natural dyes and artificial dyes are the two types of dyes They are classified into various types namely azo, anthraquinone, phthalocyanine, aromatic, nitro dyes etc based on their molecular structure. Plants, and minerals are used to make natural dyes.As per the natural availability, they are be classified into: 1. Several traditional techniques, including oxidation, coagulation, precipitation, ozonation, and adsorption, were used to treat these wastewaters [8]
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