Published 2024-05-02
Keywords
- Activated carbon, bleaching, goya olive oil, palm oil, sawdust (wood).
Abstract
Sawdust (wood), was used to make activated carbon, which was then chemically activated after
drying. The sample was weighed and put in an oven set to run between 600 °C and 800 °C for
around 4 hour, along with 100 ml of 35% phosphoric acid. The sample was subsequently filtered
by adding water to it approximately six times, resulting in a pH of 5 or 6, which indicates a
reduction in the acid content of the sample. Additionally, two oil samples (palm oil and soyabean
oil) were put through the adsorption (bleaching) procedure using activated carbon made from
sawdust (wood), with measurements ranging from 0.5g to 3.0g for each sample. Using a 500 ml
volumetric flask and hot water (100 °C), the various oil samples were degummed. This
procedure was repeated until clear water could be seen behind the oil layer in the separating
funnel. After the oils had been degummed, they were heated to 80°C for about 10 min to
neutralize them. Similar treatments were applied to hot degummed oils, using around 10 ml of
NaOH and 6 g of NaCl. The soap that had formed in the neutralized oil was then washed away
with the addition of water, and this procedure was continued until the oil was soap-free. A 460
nm ultraviolet (UV) spectrophotometer was used to measure the absorbance and concentration
of the various neutralized oil types.
The Langmuir isotherm equation was used to calculate the equilibrium concentration, values for
Ce/4c, b, and slopes for palm oil and soybean oil. Ce/qc = 1.Ce/Q° + 1/bQ°, where Ce is the
equilibrium concentration, qc is the percent absorption, 1/Q° is the slope, Q° is the adsorption
capacity, and b is the Langmuir constant. Goya olive oil yielded percentage absorption findings
of 54.30, 43.60, 14.20, 11.60, 10.20, and 0.40, whereas palm oil yielded percentage absorption
readings of 28.40, 20.60, 29.80, 11.10, 27.90, and 03.70. According to the findings of the
experiment, activated sawdust (wood) may bind to goya olive oil more effectively than it can to
palm oil.