Research articles
ScienceAsia (): 446-451 |doi:
10.2306/scienceasia1513-1874...446
Adsorption and recovery of aroma compounds from
wastewater of clove oil distillation using coffee husk
biosorbent
Askal Maimulyantia,*, Anton Restu Prihadib, Tita Rositac, Iwan Safrudind
ABSTRACT: Coffee husk was used as potential biosorbent in order to adsorb volatile compounds from wastewater of
clove oil distillation and the oil was recovered from the wastewater. Fourier-transform infrared spectroscopy (FTIR) and
scanning electron microscopy (SEM) were used for the characterization of coffee husk. Coffee husk was carbonized and
activated using hydrochloric acid. Identification of functional group by infrared spectrum on coffee husk showed the
dominant peaks at 3327 cm−1 (O−H) and 1608 cm−1 (C=C, C=O). The activated carbonized coffee husk showed the
OH-peaks weakly in the spectrum. SEM surface analysis showed an uneven surface on the coffee husk. The optimum
adsorption of clove oil was determined by chemical oxygen demand (COD). Optimization of coffee husk adsorbent was
obtained by waste volume of 10 ml, the weight of 1.5 g and contact time of 120 min. The adsorption efficiency of
the organic compound from wastewater was 37.96%. Eugenol and eugenol acetate recovery of coffee husk adsorption
were 79.44% and 54.05%, respectively. The recovery of clove oil in wastewater distillation was 0.31%.
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| a |
Department of Analytical Chemistry, Politeknik AKA Bogor, Indonesia |
| b |
Department of Food Industrial Quality Assurance, Politeknik AKA Bogor, Indonesia |
| c |
Statistics Group, Department of Analytical Chemistry, Politeknik AKA Bogor, Indonesia |
| d |
Department of R&D, PT. Indesso Aroma, Cibubur-Cileungsi, Indonesia |
* Corresponding author, E-mail: askal_m@yahoo.com
Received 30 Mar 2019, Accepted 30 Oct 2019
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