Julian Paolo Biyo Jason Andrei TemeloI-RubyPhilippine Science High school graduation Western Visayas Campus Investigatory Project
TITLE: Effect of the various Types of Substrates upon theBiodegradability of SM Plastic-type material Bags My spouse and i.
Background with the Study
Official figures present that plastics make up about 25% of thegarbage that community manila churns out, when an independent surveyconducted by Ecowaste Coalition and Greenpeace on the compositionof discards in manila bay in 2006 found that 51% were plastic luggage, 19% saccage and junk food wrappers, 5% Styrofoam, 1% hard plastics, 10% rubber, 13% eco-friendly wastes (Cayetano, 2008; www.senatorpiacayetano.com/psc/pressreleasedetails.php?recordID=175)Biodegradable plastics happen to be degradable materials on which thedegradation results from the action of naturally occurring micro-organisms such as bacterias, fungi, and algae ([email protected] com). These plastics are broken down into water, carbon dioxide, methaneand biomass primarily through enzymatic action on microorganisms(Azios, 2007www.csmonitor.com/2007/1219/p16s01 -sten. html). Eco-friendly will fully disintegrate in six months or less. It turns intopowder and blends with the soil after having a few months (Demetillo, 2008www.smprime.com/News.php?BlurbID=1113).Many environmentally friendly plastics can decompose in industrial plants, garden compost hemorrhoids, or open environments. The inherentbiodegradability of plastics count on several environmental factorssuch as moisture, temperatures, surface area, plus the manufacturingmethod with the finished product. (Nolan-ITU Pty Ltd, 2002www.environment.gov.au/settlement/publications/waste/deg) [pic][pic][pic][pic][pic]
Although some brands claim to be biodegradable in open surroundings andsaltwater, no decomposition happens within a shut down landfillthat provides been capped, avoiding air circulation. (Azios, 2007www.csmonitor.com/2007/1219/p16s01 -sten. html) The SM mall chain has started shifting biodegradable plasticbags because of its supermarkets and department stores (Cayetano, 2008). The use of eco-friendly plastics help lessen the burden of the expanding garbage problem in the Philippines and in the entire world II.
Problem from the Study
This study was conducted to reply to the following problem: Will revealing the SM plastic luggage to different substrates such ascompost soil, loam soil, faucet water, and seawater over a period of timeaffect its biodegradability? III.
Speculation of the Examine
If SM plastic carriers will be placed in different substrates over aperiod of time, then simply its biodegradability will be affected. IV.
Objectives with the Study
A. General Target:
To determine the effect of different substrates within the biodegradabilityof SM plastic luggage. B.
To expose SM plastic carriers to different substrates such as compost soil, loam soil, seawater and plain tap water for a duration of several months. 2 .
To measure the weight of the plastic-type bags (grams) before and afterdifferent coverage periods to the substrates. several. To review the percent weight loss of the SM plastic-type material bags revealed todifferent substrates after a period of your time. [pic]
Sixth is v. Design of the Study
V. Design of the Study
A. VariablesA1. 3rd party variables/ manipulated variable: substrate 1 .
Fragment soil2. Loam soil3. Seawater4. Tap waterA2. Based mostly variable/ answering variable: biodegradability (percentweight loss)B. Materials •
6, 1-litre glass jars
six, 7”x9” aluminum trays
12 pcs. 3”x4” SM plastic carriers
500g loam garden soil
500g compost soil
500mL faucet water
Evaluating scaleC. ProceduresWe cut the SM plastic material bags into 3”x4”sizes strips. We all labelled theplastic strips in C1, C2, C3 for compost ground, L1, L2, L3 intended for loamsoil, S1, S2, S3 for seawater, and T1, T2, T3 for tap watertreatments. We then determined the initial weights of the plasticstrips in grams using the analytical balance. The initial weights (W1)of the plastic strips were then recorded in...