The Journal of Pure and Applied Chemistry Research
Vol 10, No 1 (2021): Edition January-April 2021

Coffee Biomass Encapsulated in Calcium Alginate as Material for Lead (II) Adsorption from Aqueous Solutions

Sarina Hanifah (Institut Teknologi Bandung)
Rusnadi Rusnadi (Institut Teknologi Bandung)
M. Bachri Amran (Unknown)

Article Info

Publish Date
14 Apr 2021


This work aims to study the removal of lead (II) from aqueous solutions with Ca-Alginate (CA)  and Coffee-Calcium-Alginate (CCA). The coffee biomass were successfully prepared as the material to be encapsulated in calcium alginate. The characterization of the synthesized CA and CCA was performed using fourier transform infrared and scanning electron microscopy. The method used was batch study. Various factors which affected adsorption efficiency of lead (II) ions by CA and CCA, such as pH, agitation time, and adsorbent dose were investigated for determination of optimum experimental conditions. The result showed that CA and CCA had significant effects on adsorption of lead (ІІ) ions at pH = 4, agitation time of more than 120 min, and the adsorbent dose was 0.05 gram. Moreover, the Langmuir isotherm model showed that maximum adsorption capacity (qm) was 163.66 mg/g and 176.99 mg/g respectively for CA and CCA. The Langmuir isotherm was better described the adsorption equilibrium. Both of the adsorbent fitted to pseudo second order equations. These results demonstrated that CA and CCA show great potential to remove Pb(ІІ) ions from aqueous solutions.

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Journal Info





Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology


The Journal of Pure and Applied Chemistry Research focuses in publishing research articles in the field of Chemistry and Applied Chemistry. The target is in exploring, investigating, and developing chemicals sources from local and/or Indonesian to increase the value. Scope of the journal is organic ...