Abstract
Chemical separation and purification are the important part of the chemical industry which consumes up to 70% energy cost. The separation technology such as distillation and absorption are well known in essential oil purification. The purification of clove leaf oil needs an attention because the current technology still consumes high energy and produces chemical wastes. The employment of membrane separation for clove leaf purification is a novel concept that needs many improvements. The main problem of polymeric membrane utilization is eugenol ability to dissolve the polymer membrane. Cellulose acetate is one of membrane polymers that is insoluble in eugenol. This paper reveals the performance of nanohybrid CA/TiO2 membrane for eugenol purification. The stability of produced membrane as an organic solvent nanofiltration (OSN) is evaluated in this study. The SEM image result shows that fabricated membrane has an asymmetric structure of membrane sub-layer. The different nano-particles loading shows the variation of permeate fluxes, the increase of nano-particles in polymer blend tends to increase the permeability. Thus, this study provides an overview of the potential CA/TiO2 for OSN development by incorporating inorganic nano-particles in membrane polymers for eugenol purification that can be integrated in upstream separation process.
Highlights
Chemical separation and purification are the important part of the chemical industry which specify the quality of the product
Membrane separation technology can be proposed as an alternative separation technology because it is currently known as an inexpensive technology, low energy consumption, can be conducted in a mild operating condition, and to be scaled up [5]
The surface image of cellulose acetate (CA) membrane is shown in Figure 3.a, the surface is flat and smooth, there is not observed any void at 20,000x magnification
Summary
Chemical separation and purification are the important part of the chemical industry which specify the quality of the product. The quality of clove leaf oil is defined by the content of eugenol and the main impurity of the crude clove leaf oil is Caryophyllene [3] These chemicals are challenging to be separated using a membrane due to very few literature which reports about this separation concept. In the WO Patent that was invented by Boam et al they disclosured in general relates to a process for reducing impurities present in an essential oil using selective membrane [9] They reported that the membrane should gave MWCO at least 400 – 1500 g.mol-1 and the essential oil should be dissolved in organic solvent before being filtrated using selective membrane. The performance of CA/nano-TiO2 membranes are discussed in this study and the final product quality of clove oil permeate are reported
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