Abstract
The main objective of this work was to design and model fixed bed adsorption column for the adsorption of vanillin from aqueous solution. Three parameters were evaluated for identifying the performance of vanillin adsorption in fixed-bed mode, which were bed height, vanillin initial concentration, and feed flow rate. The maximum adsorption capacity was increased more than threefold to 314.96 mg vanillin/g resin when the bed height was increased from 5 cm to 15 cm. Bohart-Adams model and Belter equation were used for designing fixed-bed column and predicting the performance of the adsorption process. A high value of determination coefficient (R2) of 0.9672 was obtained for the modelling of vanillin adsorption onto resin H103.
Highlights
A sweet odour characteristic is the main driver for vanillin’s use in food and beverage industries, as well as perfumes and cosmetics industries
Three parameters are usually varied in fixed-bed adsorption, namely bed height, solute initial concentration, and feed flow rate
Only bed height was varied to determine the dynamic behaviour of vanillin adsorption onto resin H103 that was packed in a column
Summary
A sweet odour characteristic is the main driver for vanillin’s use in food and beverage industries, as well as perfumes and cosmetics industries. Vanillin (4-hydroxymethoxybenzaldehyde, C8H8O3, 152.15 g/mol) is produced by a traditional, tedious, and time-consuming process of curing vanilla pods from vanilla plants [1]. It can be manufactured from several chemicals such as curcumin and eugenol, but the processes deal with high temperatures and pressures [2]. Moving forward, biotechnology offers ways of producing vanillin at ambient conditions by the action of microorganisms and/or enzymes on abundant sources of raw material such as biomass. Several components from biomass are identified as potential sources for the production of vanillin such as ferulic acid, vanillic acid, and lignin [4]
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