Lab Waste Management 3 - Psm

8/6/2019 Lab Waste Management 3 - Psm

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AB HANAN MD BASRIAB HANAN MD BASRI









Introduction

IntroductionLaws & RegulationsLaws & Regulations

I dentifying chemical wasteI dentifying chemical wasteDisposal ProceduresDisposal Procedures





Research, teaching laboratoriesResearch, teaching laboratoriesproduce a variety of produce a variety of wastewastechemicalschemicals ..



Typical Chemical WastesTypical Chemical Wastes

Old chemicals no longer usedOld chemicals no longer used

Expired chemicalsExpired chemicals

Chemicals with illegible labelsChemicals with illegible labels ² ² chemicalchemicalcan not be determinedcan not be determined

Chemicals with no labelChemicals with no label

A ny chemical product from completedA ny chemical product from completed

experimentsexperiments





PotentiallyPotentially dangerousdangerous to to humanhumanhealthhealth andand thethe environmentenvironment





A ll hazardous waste generators areA ll hazardous waste generators areresponsible for the wastes theyresponsible for the wastes theygenerategenerate for the life of the wastefor the life of the waste(cradle(cradle- -toto--grave)grave)



I t is a system to governI t is a system to govern

chemical waste (esp.chemical waste (esp.hazardous waste) i.e. fromhazardous waste) i.e. frompoint of generation to ultimatepoint of generation to ultimatedisposal, and beyonddisposal, and beyond





19781978 ² ² Love CanalLove CanalDumping of municipal andDumping of municipal andindustrial chemicalsindustrial chemicalsMain contaminant was benzeneMain contaminant was benzene

Birth defects, LeukemiaBirth defects, Leukemia



A waste is a hazardous waste if it falls intoA waste is a hazardous waste if it falls intoone of the followingone of the following two categoriestwo categories ::

2. ́ Characteristicµ Waste2. ́ Characteristicµ WasteA waste that exhibits any one or anyA waste that exhibits any one or anycombination of 4 characteristicscombination of 4 characteristics

1. Environmental Quality A ct 1974 ( A CT 127)1. Environmental Quality A ct 1974 ( A CT 127)has developed lists of chemicals that arehas developed lists of chemicals that aredeemed ´hazardous wastesµdeemed ´hazardous wastesµ



1.1. ´Listedµ Waste´Listedµ Waste

(I s specifically listed under the(I s specifically listed under theF IR ST SCHEDULE ( REGU LAT ION 2)F IR ST SCH EDU LE (REGU LAT ION 2)ENVIRONMENT AL Q U AL ITY (SCH EDU LED ENVIRONMENT AL Q U AL ITY (SCH EDU LED WAS TE S) REGU LA TION 2005 WAS TE S) REGU LA TION 2005) )

A waste is a hazardous waste if A waste is a hazardous waste if it falls into one of the followingit falls into one of the following

two categories:two categories:



FI R S T SCH EDULE (REGUL AT I ON 2)FI R S T SCH EDULE (REGUL AT I ON 2)ENV I RONMENT AL Q U AL I TY ENV I RONMENT AL Q U AL I TY

(SCH EDULED WAS TE S) REGUL AT I ON (SCH EDULED WAS TE S) REGUL AT I ON 2005 2005

5 G roups5 G roups

77 Categories77 Categories







Displays any of the four hazardousDisplays any of the four hazardouswaste characteristics (waste characteristics (characteristiccharacteristicwaste):waste):

I gnitabilityI gnitability - - Ignitable ± Flashpoint of 140°F

CorrosivityCorrosivity - - C orrosive ± pH 2 or 12.5

ReactivityReactivity - - R eactive ± R eacts with anything

ToxicityToxicity - - Toxic ± LD-50 < 5000 mg/kg



To prevent the hazard and harmTo prevent the hazard and harmto health and the environmentto health and the environment

arising from wastesarising from wastes



N o regulated wastes may beN o regulated wastes may bedumped down the drain, dischargeddumped down the drain, dischargedto sanitary sewer, discarded withto sanitary sewer, discarded with

garbage, or allowed to evaporate togarbage, or allowed to evaporate tothe atmospherethe atmosphere unless specificallyunless specificallypermittedpermitted. .

Storm or Sewer Drains

Ordinary TrashOrdinary Trash







Classification/ CharacterizingClassification/ CharacterizingProper packagingProper packagingEffective labelingEffective labeling

Proper storage of wasteProper storage of waste





Place in proper containersPlace in proper containers

-- Use appropriate sized container Use appropriate sized container -- S elect the correct container S elect the correct container

(glass / polyethylene(glass / polyethylene) for storage) for storage



Compatible with waste being storedCompatible with waste being stored

-- should not react with the wasteshould not react with the waste

* M ineral acids* M ineral acids ² ² plasticplastic* Bases* Bases ² ² plasticplastic* O xidizers* O xidizers - - glassglass* O rganics (* O rganics (incl incl Acetic acid)Acetic acid) ² ² glassglass

e.g. NO Hydrofluoric acid in glasse.g. NO Hydrofluoric acid in glass-- D issolves glass containersD issolves glass containers



I n good condition and not leakingI n good condition and not leaking-- N o rust, corrosion, leaking containers,N o rust, corrosion, leaking containers,

or containers with residueor containers with residue

-- Container cap must be free of cracksContainer cap must be free of cracksand seals tightlyand seals tightly ² ² no corks, stoppers, foil, andno corks, stoppers, foil, and parafilm parafilm



K eep containers closed and on tight atall times except when waste being addedor removed from the container.E vaporation of wastes is a violationFunnels are not appropriate lids and should not be left ina container while not in use



Do not store hazardous wastesDo not store hazardous wastesin food containersin food containers



Empty chemical containers can beEmpty chemical containers can bereused for waste collectionreused for waste collection BUT««.BUT««.

original label must beoriginal label must be removed or removed or defaced completelydefaced completely . This will. This willminimize the possibility of minimize the possibility of

accidentally using the wrongaccidentally using the wrongmaterial due to a labeling confusionmaterial due to a labeling confusion

must be triplemust be triple rinsedrinsed before thebefore theaddition of any wasteaddition of any waste

UseUse originaloriginal containers if possible.containers if possible.



Do not overfill««Do not overfill««Leave theLeave thecontainer less thancontainer less than90% full90% full

(Allowing for (Allowing for vapour vapour expansion)expansion)





Why you must label waste container???Why you must label waste container???

required by law and regulationsrequired by law and regulations

can be properly identified and managedcan be properly identified and managed



Do N OT allow´Unknowns.µA ll containersmust belabeled!



What was in that container?What was in that container?

What really is in that bottle? DMF? Chloroform? Methanol?



Must be labeled asMust be labeled as HAZA RDOU S WAS TE HAZA RDOU S WAS TE

Should be accurate, legible and fully explainedShould be accurate, legible and fully explainedWaste composition and physical stateWaste composition and physical stateN ame of chemical or chemical mixture andN ame of chemical or chemical mixture andpercent by volume addedpercent by volume addedT he hazards associated with the wasteT he hazards associated with the wasteT he date the container is filledT he date the container is filledD o not use chemical symbols, chemical

formulas abbreviations, or codes for waste identification











K eep waste containers closedK eep waste containers closed





Use compatible secondary containmentUse compatible secondary containment(overspill containers) :(overspill containers) :

Bins, trays etc« To minimize in case of Bins, trays etc« To minimize in case of spills and shall containspills and shall contain 110%110% of theof thevolume of the largest container volume of the largest container



S tore chemical waste inS tore chemical waste indesignated areadesignated area

S hould be out of the way of S hould be out of the way of normal lab activities, butnormal lab activities, buteasily accessibleeasily accessible

Do not store or leave waste & empty containers in the hallwaysDo not store or leave waste & empty containers in the hallways



S egregate Waste ProperlyS egregate Waste Properly

Reduce the risk of an adverseReduce the risk of an adversechemical reaction occurringchemical reaction occurring(Waste Compatibility)(Waste Compatibility) ,, particularlyparticularly

between different groups or between different groups or classes of materialsclasses of materials



Liquid waste should be separated into theLiquid waste should be separated into thefollowing categories:following categories:

A cidsA cidsBasesBasesHalogenated organic solventsHalogenated organic solventsN onN on--halogenated organic solventshalogenated organic solventsA queous heavy metalsA queous heavy metalsA ir A ir reactivesreactivesWater Water reactivesreactivesCyanides and sulfidesCyanides and sulfides



S eparate by hazardsS eparate by hazards-- flammableflammable-- toxictoxic-- corrosivecorrosive-- reactivereactive

Separate by distance and containment

Separate by distance and containment





N itric acid waste was added to bottleN itric acid waste was added to bottlecontaining waste solventscontaining waste solventsReacted violently causing explosionReacted violently causing explosionunder fume hoodunder fume hood





UsedUsed sulphuricsulphuric acidacid(100ml) poured into a(100ml) poured into acontainer with nocontainer with nolabel (unknown). I n alabel (unknown). I n afew seconds, smallfew seconds, smallviolent reactionviolent reactionoccurred and splashedoccurred and splashedover her face andover her face andneck.neck.(minor acid burn)(minor acid burn)



Empty containers thatEmpty containers thatcontained acutelycontained acutelyhazardous wastes arehazardous wastes aremanaged as hazardousmanaged as hazardous

wastes themselves.wastes themselves.



1. Open when not in use1. Open when not in use2. F unnel left in container 2. F unnel left in container 3. Unlabeled container 3. Unlabeled container 4. N o secondary containment4. N o secondary containment





This open wasteThis open wastecontainers needs a capcontainers needs a capPoor waste labelingPoor waste labeling



Thank you for listening! Thank you for listening!



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Lab Waste Management 3 - Psm