PEMANFAATAN DAUN PINUS (Pinus merkusii) SEBAGAI ADSORBEN DENGAN IMOBILISASI SILIKA GEL UNTUK MENYERAP LOGAM TIMBAL (Pb)
Pines (Pinus merkusii) contain cellulose and lignin compounds which can be utilized as adsorbent to absorb dissolved metals in water. Biosorbent produced from pines do not have a strong bond and easily to degrade so it needed to be strengthen by immobilization using silica gel. There are two bios...
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| Format: | Theses |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/32102 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Pines (Pinus merkusii) contain cellulose and lignin compounds which can be
utilized as adsorbent to absorb dissolved metals in water. Biosorbent produced
from pines do not have a strong bond and easily to degrade so it needed to be
strengthen by immobilization using silica gel. There are two biosorbent, first,
biosorbent without treatment and second is biosorbent immobilized using silica gel.
This research was presented to determine the ability of pine leaves to absorb metal
lead (Pb). The optimum adsorption capacity condition for BWT is in the conditions
of 0.149 mm particle size, biosorbent dose 20 g/L, contact time of 10 minutes, with
initial concentration of 50 ppm, while for BTSG is in particle size of 0.149 mm,
biosorbent dose 5 g/L, contact time of 30 minutes, with initial concentration of 50
ppm. BTSG biosorbent has a better performance than BWT. From the isotherm
adsorption, obtained that the adsorption mechanism for BWT is monolayer and for
BTSG is multilayer. Adsorption kinetics following second order kinetic models for
BWT and BTSG. Isotherm adsorption was determined using the Langmuir and
Freundlich equations whereas kinetic absorption was determined using the
Lagergren equation. |
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