Chemicals and toxic waste. Introduction I ) What are toxic waste and what are chemicals 1) Where do they come from ? 2) What does toxic waste contain.

Chemicals and toxic waste

Introduction I ) What are toxic waste and what are chemicalsI ) What are toxic waste and what are chemicals

1) Where do they come from ?2) What does toxic waste contain ? 3) What’s radioactivity ?

II ) Consequences on the environmentII ) Consequences on the environmentIII ) Solutions to reduce toxic wasteIII ) Solutions to reduce toxic waste

1) Select and recycling2) Prevention !

IV ) Our opinion about toxic waste IV ) Our opinion about toxic waste Vocabulary and definition

Human activity produces millions of tons of waste. They are very different :

Waste : déchetsS.I.W : Special Industrial Waste

Yearly : in 365 days

A toxic substance causes desorders of vital function.

S.I.W come from chemicals, steal metallurgy, smelting works industries.

There is : -organic waste -inorganic waste -solid mineral waste

Toxic waste can be:-chemicals of laboratory -photographic baths-painting, glues, vernish…

Vital function :

ex: respiratory, heart..

Steal metallurgy :

Industries de métallurgie

Smelting works industries:

Industries de fonderies

Tar : solvants

• Heavy metals are cadmium, copper, mercury, plumb, arsenic fluorine…

HEAVY METAL ARE TOXIC !!

Heavy metal : métaux lourds

Cyanides: cyanure CN-

Sand of foundry: sable de fonderie

Cyanided salts : sels cyanurés

Photographic baths : bains photographiques

Paintings, vernish, glues: peintures, vernis, colles

Cartridges for printers : cartouches d’imprimante

Cadmium : Cd

Copper : cuivre Cu

Mercury : mercure Hg

Plumb : plomb Pb

Arsenic : arsenic As

Fluorine : fluor F

Treatements of grapevine : traitements des vignes

Intensive pig breeding : élevage intensif de porcs

As

DIOXINE

Cremation of ordinary waste

Radioactivity is transformation of chimical elements in other more frivolous element.

Radioactivity => dangerous X-rays => matter become ion

Improve : améliorer Quote : citer

Batteries : piles plumb hose : tuyaux en plomb

II) Consequences on the environment

• Toxic wate => illnesses, asthma, allergies

• Poisoning by plumb is saturnism digertive problems and development problems for babys

• Poisoning by asbestos is carcinogenic

Pregnant woman : femme enceinte

Asbestos : amiante carcinogenic : cancérigène

TOXIC WASTE ARE

DANGEROUS FOR

HUMANS

Extract of news paper TIME MAGAZINE.

Look carefully bird’s three heads

Acid floors : sols acides

Ground water : nappe phréatique

Guenine : véritable

Health : santé

Visible pollutions of countryside and city

Butt :1 to 2 years

Piles : more than 50 years

Can : Until a century

Packaging aluminium : approximately 200 years

Plastic bag : between 100 and 1000 years

Glass : 3000 years

* 32% in recycling matters

* 17% in treatment for their elimination

* 51 % in garbage

Organic waste are incinerated

Inorganic waste are treated physically

Solid mineral waste are stored in garbage

Marc

Medhi

LaurianeMERCI DE NOUS AVOIR ECOUTER !!