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Transcript

chemistry

Project

Save water

Solanée Gallet

leonardo da vinci

"Water is the driving force of all nature"

1. THE IMPORTANCE OF WATER

Lack of water- the importance of preserving it



2.2 billion people live without access to safe drinking water



Can we achieve it?

2. A CRUCIAL
GOAL

GOAL 2030

The goal of Sustainable Development No. 6: Water and Sanitation for All By 2030



Achieving universal and equitable access to safe drinking water at an affordable price for all

Improving water quality by reducing pollution, eliminating spills and minimizing chemical emissions

3. Solutions

Anyone can make a change

Even at home you can make a change in preserving water

at Home

Take shorter showers,

turn off the water while brushing your teeth, and use your automatic dishwasher for full loads only.

Water your lawn only when it needs it, fix leak, save water whenever possible, recycle water.


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4. Desalination

Converte salt water into drinkable water

Desalination is a process that carries away mineral components from saline water.


The most common desalination processes are distillation and reverse osmosis.


Advantages

Provides accessible drinking water.

High costs to build and operate.

Disadvantages

Environmental impact

Why desalination is bad for the environment?

Desalination can raise fossil fuel reliance and augment emissions. Aggravate climate change if renewable energy sources are not freshwater production. Desalination surface water inputs stand a considerable hazard to marine life.

greenhouse gas

a gas that absorbs and ejects radiant energy

Distillation

the action of purifying a liquid by a process of heating and cooling.

It imitates the natural water cycle, where the sun heats seawater sufficiently for evaporation to happen. After evaporation, the water steam is squeezed onto a perfect surface. There are two kinds of solar desalination; the first type uses to transform solar energy to electrical energy to power desalination, and the second type converts solar energy to heat. It is known as solar thermal powered desalination.

Solar distillation

photovoltaic cells

photovoltaic cells-

It relates to the production of electric current at the junction of two substances exposed to light.


It employs a temperature distinction across a membrane to evaporate steam from a brine solution and compact pure water on the colder side. The membrane structure can include a considerable consequence on efficiency and durability. A study discovered that a membrane made through co-axial electrospinning of PVDF-HFP and silica aerogel could purify 99.99% of salt after constant 30-day use.

Membrane distillation

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Our use of water can help reduce floods, droughts, scarcity, and pollution, as well as combat climate change


RELATED ISSUES

LET'S USE OUR NATURAL RESOURCES RESPONSIBLY



THANK YOU!