ADSORPTION OF RHODAMINE B USING FLOATING ?-CARRAGEENAN BEADS AS AN ADSORBENT
Rhodamine B is a synthetic dye that is commonly used in the textile, paper, and printing industries. In the textile industry, rhodamine B is used to dye cotton, wool, silk, leather, and bamboo. From that use, industrial waste will be produced which can pollute the waters. According to the Worl...
Saved in:
| Main Author: | |
|---|---|
| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/75296 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Rhodamine B is a synthetic dye that is commonly used in the textile, paper, and printing
industries. In the textile industry, rhodamine B is used to dye cotton, wool, silk, leather, and
bamboo. From that use, industrial waste will be produced which can pollute the waters.
According to the World Health Organization (WHO), rhodamine B is quite dangerous because
it could trigger cancer in humans. One method for rhodamine B removal in wastewater is using
adsorption. In this research, floating ?-carrageenan beads adsorbent was made as an adsorbent
from rhodamine B. Floating ?-carrageenan beads adsorbent was prepared by varying the type
of carbonate salt and carbonate mass added. Floating ?-carrageenan beads were successfully
prepared using a mixture of ?-carrageenan powder and CaCO3 with a mass ratio of 8:2. The
adsorbent formed was characterized using the float test, swelling degree measurements,
Fourier Transform Infrared (FTIR) analysis, and Scanning Electron Microscope (SEM). Based
on the characterization results using FTIR, floating ?-carrageenan beads were successfully
made showing a distinctive peak of ?-carrageenan in the fingerprint region. The floating
?-carrageenan beads had a floating time of 12 hours and a swelling degree of 763.35%. The
adsorption performance of rhodamine B by floating ?-carrageenan beads was analyzed by
measuring the remaining concentration of rhodamine B that was not absorbed from the
solution using a UV-Vis spectrophotometer at a maximum wavelength of 557 nm using the
calibration curve method. The optimum adsorption condition that was obtained was adsorption
at pH 2 with an initial concentration of rhodamine of 100 mg g?1 and an adsorbent mass of
0.1 gram with a contact time of 120 minutes. The adsorption of rhodamine B using floating
?-carrageenan beads adsorbent followed the Sips adsorption isotherm model with a qm of
86,07±4,66 mg g–1and pseudo second order kinetics. Based on adsorption thermodynamics, it
is found that adsorption is spontaneous and eksothermic as indicated by the ?G values of
–26,83±0,82 (303 K), –27,72±0,85 (313 K), and –28,61±0,88 (323 K) kJ mol?1, and ?H of
–4,17±0,84 kJ mo1?1 and ?S of 88,55±2,72 J mo1?1K?1
.
|
|---|