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文檔簡介
PLASTIC
ON
ENVIRONMENT!!!第一頁,共十五頁。INTRODUCTIONPlasticisthegeneralcommontermforawiderangeofsyntheticorsemisyntheticorganicsolidmaterialssuitableforthemanufactureofindustrialproducts.Plasticsaretypicallypolymersofhighmolecularweight,andmaycontainothersubstancestoimproveperformanceand/orreducecosts.
Plasticisoneofthefewnewchemicalmaterialswhichposeenvironmentalproblem.Polyethylene,polyvinylchloride,polystyreneislargelyusedinthemanufactureofplastics.
第二頁,共十五頁。TYPESOF
PLASTICPRODUCTSPLASTICBAGSPLASTICCOATINGSPLASTICFURNITUREPLASTICSHEETSPLASTICFITTINGSPLASTICTANKSPLASTICTOYSPLASTICBUCKETSPLASTICSANITARYWAREPLASTICSTATIONERY第三頁,共十五頁。第四頁,共十五頁。
PLASTIC’SADVERSEEFFECTSONOUR
ENVIRONMENT
1}Plasticpollutebeaches&oceans
Garbagehasbeendiscardedintotheoceansforaslongashumanshavesailedthesevenseasorlivedonseashoresornearwaterwaysflowingintothesea.Sincethe1940s,plasticusehasincreaseddramatically,resultinginahugequantityofnearlyindestructible,lightweightmaterialfloatingintheoceansandeventuallydepositedonbeachesworldwide第五頁,共十五頁。2}PlasticbagslitterthelandscapeOncetheyareused,mostplasticbagsgointolandfill,orrubbishtips.Eachyearmoreandmoreplasticbagsareendinguplitteringtheenvironment.Oncetheybecomelitter,plasticbagsfindtheirwayintoourwaterways,parks,beaches,andstreets.And,iftheyareburned,theyinfusetheairwithtoxicfumes.
第六頁,共十五頁。3}PlasticbagskillanimalsAbout100,000animalssuchasdolphins,turtleswhales,penguinsarekilledeveryyearduetoplasticbags.Manyanimalsingestplasticbags,mistakingthemforfood,andthereforedie.Andworse,theingestedplasticbagremainsintactevenafterthedeathanddecompositionoftheanimal.Thus,itliesaroundinthelandscapewhereanothervictimmayingestit.
第七頁,共十五頁。4}Plasticbagsare
non-biodegradableAndoneoftheworstenvironmentaleffectsofplasticbagsisthattheyarenon-biodegradable.Thedecompositionofplasticbagstakesabout1000years.第八頁,共十五頁。PLASTIC’SEFFECTONHUMANLIFEPlasticplaysthevillainrightfromthestageofitsproduction.Themajorchemicalsthatgointothemakingofplasticarehighlytoxicandposeseriousthreattolivingbeingsofallspeciesonearth.
Someoftheconstituentsofplasticsuchasbenzeneareknowntocausecancer.Plasticresinsthemselvesareflammableandhavecontributedconsiderablytoseveralaccidentsworldwide.
第九頁,共十五頁。Onceplasticisproduced,theharmisdoneonceandforall.Plasticdefiesanykindofattemptatdisposal–beitthroughrecycling,burning,orlandfilling.Whenyourecycleahazard,youcreateahazard.
Recyclingofplasticisassociatedwithskinandrespiratoryproblems,resultingfromexposuretoandinhalationoftoxicfumes,especiallyhydrocarbonsandresiduesreleasedduringtheprocess.第十頁,共十五頁。MEASURES1.Single-useplasticbagshavebecomesuchaubiquitouswayoflifethatitseemsasifwesimplycannotdowithoutthem.However,ifwehavethewill,wecanstartreducingtheiruseinsmallways.2.Atotebagcanmakeagoodsubstituteforholdingtheshopping.Youcankeepthebagwiththecahier,andthenputyourpurchasesintoitinsteadoftheusualplasticbag.第十一頁,共十五頁。MEASURES3.Recyclingtheplasticbagsyoualreadyhaveisanothergoodidea.Thesecancomeintouseforvariouspurposes,likeholdingyourgarbage,insteadofpurchasingnewones.4.Whilegovernmentsmaybeworkingoutwaystolessentheimpactofplasticbagsontheenvironment,however,eachofusshouldshouldersomeoftheresponsibilityforthisproblem,whichultimatelyharmsus.第十二頁,共十五頁。GROUPMEMBERSNISHANTDOGRAROHITKHANNAKAVALDEEPSINGHMANRAJSANDHUMEGHAGAIKWA
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