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Purifying Used Cooking Oil
Abstract
This investigatory project determines the possibility of purifying used
cooking oil using sedimentation method. The activated carbon was also used
in the experiment to absorb some dissolved substances in the oil. There were
three different setups used in this study namely; Setup 1 (sedimentation was
done once); Setup 2 (sedimentation was done twice); and Setup 3
(sedimentation was done thrice).
The purified oil was compared to commercial oil in terms of color, odor, and
clearness using acceptability test. Viscosity test was also done in the
laboratory.
The means of the samples were compared and revealed that purified oil had
no significant difference to commercial cooking oil in terms of
color/clearness and odor as the result of the acceptability test. Therefore,
sedimentation is a possible method of purifying used cooking oil.
Introduction
Oil used in cooking foods is commonly derived from vegetables. Cooking oil
is commonly used for frying. Oil used for frying is usually thrown away.
This study tried to find a way to purify used oil.
Materials & Equipment
The means of the samples were compared and revealed that purified oil had
no significant difference to commercial cooking oil in terms of
color/clearness and odor as the result of the acceptability test. Therefore,
sedimentation is a possible method of purifying used cooking oil.
Introduction

Oil used in cooking foods is commonly derived from vegetables. Cooking oil
is commonly used for frying. Oil used for frying is usually thrown away.
This study tried to find a way to purify used oil.
Cassava starch as an effective component for
Ideal Biodegradable Plastic
Inventions have evolved and continue to evolve such that after several years
of study, research and experimentation reach great developments. With
continuing efforts to investigate the constituents of Philippine plants, we have
pursued investigation of starch of the cassava plant (Manihot esculenta).
Cassava tubers were gathered, ground and squeezed to extract starch. Starch
obtained was weighed and divided into three equal parts; 80 grams in T1, T2
and T3.
Treatments also consisted of 60 ml plastic resin glue and resin with 50 grams
of flour catalyst for T1, 100 grams for T2 and 150 grams in T3. The
components in every treatment were mixed, stirred and then poured in silk
screen with oil and then sun-dried. Test for capacity to carry weight indicated
T3 as the best. For its ability to hold water, all products passed but for
biodegradability, T1 gave the best results. The tensile and bending properties
had been tested using the Universal Testing Machine and Analysis showed
that T3 had the greatest tensile strength while T2 had the greatest bending
property. Using ANOVA single Factor, results showed that there was
significant difference among the three treatments in bending and tensile
strength. However, for biodegradability test there was no significant
difference. The final phase of the study determined the effectiveness of
cassava starch as component of biodegradable plastic. Results confirmed that
cassava starch is ideal as tests proved its worth.
Materials & Equipment