GCSE Chemistry - Waste Water #57

In today's video we'll cover:
- What waste water is
- The different sources of waste water
- How we can treat waste water

[Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
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Amadeus & Tom

[thegoldencalf.]

cognito must be rolling in it. Capitalising on the fact that everyone in the UK has to pass through GCSE's, they have a undying target market.

[vs_hm]

0:04 why were my first thoughts "Cake"

[aanchalsharma]

Very good for last minute revision and making notes!

[tomdenial]

this is better than my teacher from yr10 cant lie

[ollie]

COGNITO YOU ARE LITERALLY MY LIFESAVER THANK YOU SO MUCH FOR MAKING SUCH AWESOME VIDS LIKE <3

[APower]

i think the sludge just means poo or shite 😂😂

[Born_to_b]

I'm being forced to watch this for my science homework 😭😭😭

[PhilippBrandAkatosh]

an idea for you : algae can be used to clean toxic waste pools of water and even enrich the algae for potent biofuel. Here's a breakdown of the process:

**Algae-based wastewater treatment:**

1. Algae are naturally able to absorb and break down pollutants in water, such as heavy metals, pesticides, and industrial chemicals.
2. Algae can be used to create a bioreactor system, where the algae grow and absorb pollutants from the wastewater.
3. The algae can then be harvested and removed from the water, leaving it cleaner and safer for discharge or reuse.
4. The harvested algae can be further processed to produce biofuels, animal feed, or other value-added products.

**Enriching algae for biofuel:**

1. Once the algae have been harvested from the wastewater treatment process, they can be further enriched to increase their lipid content.
2. Lipids are the primary components of biofuels, so increasing their concentration can lead to higher energy yields.
3. Enrichment techniques may include:
* Nutrient manipulation: Adjusting the nutrient levels in the growth medium to optimize lipid production.
* Temperature control: Regulating temperatures to optimize lipid synthesis.
* Photoperiod manipulation: Altering light-dark cycles to optimize lipid production.
* Genetic engineering: Modifying algae genomes to enhance lipid production.
4. The enriched algae can then be processed into biofuels, such as biodiesel, bioethanol, or biogas.

**Benefits of using algae for wastewater treatment and biofuel production:**

1. Closed-loop system: Algae can be used to clean wastewater and produce biofuels in a closed-loop system, reducing waste and environmental impact.
2. Sustainable energy source: Algae-based biofuels offer a promising alternative to fossil fuels, with a potentially lower carbon footprint.
3. Waste reduction: Algae can help reduce the amount of toxic waste that needs to be disposed of, promoting a more circular economy.
4. Carbon sequestration: Algae can absorb CO2 from the atmosphere during their growth phase, making them a valuable tool for carbon sequestration.

While this technology is still in its development stage, there are already several pilot projects and commercial-scale operations around the world that demonstrate its feasibility.

[elle]

Has bioleaching and phytomining been covered on the channel? Love the videos by the way! <3

[steelgaming]

Cool video, knew that some water came from this, but not exactly how it was done, cool and informative. Thanks

[mocabe]

Why don't we treat sludge aerobically just like the effluent tank?

[hamzasherasmat]

I swear you bubble it through chlorine is the last stage and I never learnt about after sedimentation

[auaslam]

Good work i have learn
a lot from you