What Are The Benefits From Recycling Glass?

The benefits of recycling glass is reduced energy usage and impact on the environment. Glass is infinitely reusable which means that fewer natural resources are needed to produce new glass products.

Products made from recycled glass:

  • Glass containers
  • Fiberglass
  • Recycled glass countertops
  • Foam aggregate
  • Ground cover

Effects Of Glass Recycling

The effects of glass recycling are cheaper manufacturing materials and therefore products, reduced energy waste, reduced natural resource usage, but more effort on the end of the consumer who has to sort and clean the glass to be recycled.

How Does Making Glass from Raw Material Compare to Recycling

Recycling glass is one of the many ways we reduce pollution and waste. Glass is a significant portion of the garbage that we throw away everyday. Instead of letting landfills pile up with glass objects that are a threat to safety and the environment, we can use it again.

  • Less energy required. Making glass from raw materials for the first time requires more energy. Making glass from glass cullet – recycled glass that is broken into pieces – melts at a lower temperature. So we can save on energy needed to melt the glass.
  • Reduced pollution. Glass produced from recycled glass reduces related air pollution by 20% and related water pollution by 50%.
  • Reduce landfills. Recycling glass reduces the space in landfills that would otherwise be taken up by used bottles and jars.

How Does Not Recycling Glass Affect the Environment

Not recycling glass bottles, jars, and other containers puts more garbage in landfills. It also means that less glass is recycled which leads to using more natural resources to produce new glass. Using more natural resources to manufacture new glass bottles and containers creates more pollution than necessary.

How Does Recycling Affect the Carbon Footprint of Glass

If we could get 50% of all glass produced to be from recycled glass then we’d reduce the global warming potential by 10%. That’s 2.2 million metric tons of CO2 reduced from the environment every year. – source

How Does Recycling Glass Affect the Environment

There is air and water pollution associated with manufacturing glass. Glass products made from recycled glass reduces water pollution by 50%, and air pollution by 20% when compared to if the product had been made from non recycled materials.

How Does Recycling Glass Take Less Energy

Recycling glass takes less energy because glass cullet is easy to melt down and turn into new glass. It’s easier to produce new glass with fewer resources.

How Effective is Glass Recycling?

Over a ton of natural resources are saved for every ton of glass recycled. Energy costs drop about 2-3% for every 10% cullet used in the manufacturing process. – source.

How Long Will Recycling a Glass Bottle Power A 100 Watt Light Bulb

The energy saved from recycling one glass bottle will operate a 100-watt light bulb for four hours. It takes approximately 1 million years for a glass bottle to break down at the landfill. – source

Can All Glass Be Recycled?

Not all glass can be recycled. The general rule is that if the glass is sold with the food as packaging then it can be recycled. An exception is separately sold mason jars. Those are recyclable.

What Glass Can Be Recycled?

If the glass is sold with the food as packaging, then it is likely recyclable.

  • Glass jars – even if food was not sold with it. Mason jars for example
  • Salsa jars
  • Milk jug glass

What Glass Can Not Be Recycled?

Not all glass can be recycled. If the glass is not sold with the food as packaging, then it is likely non-recyclable.

Types of glass that can’t be recycled:

  • Window panes
  • Mirrors
  • Automotive glass
  • Crystal
  • Ceramics – cookware and decorative pieces
  • Pyrex and tupperware glass – glass that is heat resistant
  • Lightbulbs – unless specifically accepted by your recycler

How To Recycle Glass

Glass bottles and jars of all colors and sizes can be recycled as long as they are not broken. If they are broken, however, they need to be treated as junk. Mirrors, window glass, ceramic dishes and bulbs cannot be recycled – put them in the garbage bin.


Remove lids, rinse out and ideally clean with soap, remove labels the best that you can, put in recycling. Separate the glass if specified on the container or by the glass recycling facility.

Other Ways To Recycle Glass

Recycling doesn’t have to be sending used glass products to a facility. Recycling can also be repurposing glass. Repurposing is using something for a purpose that it was not originally intended for.

How to recycle glass bottles:

  • Water bottle. Carry a glass bottle as a reusable water bottle.
  • Candle holder. Use a glass bottle as a candle holder inside or on the patio.
  • Art. Create mosaic art with broken pieces of colored glass bottles.

How to recycle glass jars:

  • Storage. Use them as storage containers for leftovers or packed lunches.
  • Garden. Build a garden in a glass jar.
  • Drink container. Use them as water, juice and beer glasses at home.
  • Vase. Use jars as flower vases.

Do I Keep the Lid on Glass Containers when Recycling?

No. Do not keep the lid on glass containers when recycling.

Do You Need to Wrap Glass Bottles When Recycling?

No. You do not need to wrap glass bottles when recycling.

How Clean Should Glass Be for Recycling

Glass should be as clean as you can get it. Recycling facilities have to clean all glass, including removing labels before they recycle it. Some facilities just throw those away, so it was a waste to attempt to recycle it.

Glass Recycling Plant Process

  • Step 1: Glass bins. Deposit your glass at a designated area in your city, or your curbside glass bin.
  • Step 2: Glass is collected and taken to the recycling facility.
  • Step 3: Sorting station 1. Many facilities have two stations dedicated to sorting out contaminants – non glass materials, non-recyclable glass.
  • Step 4: Sorting station 2. Separate glass by type and color.
  • Step 5: Crude glass breaking is done by a machine. Some water may be used.
  • Step 6: Trommel. The broken glass particles go through a spinning screen and are sorted into specified sizes – likely ¾” & ⅜. Fans push paper out and into recycling bins. Other materials that were sifted are sorted and recycled – caps, cork, lids, etc.
  • Step 7: Fluidized Bed Dryer. The glass is dried at 190 degrees F. This burns sugars, bacteria, and label glue. Residue is sucked away.
  • Step 8: Cullet. The primary rotary screen filters glass into different sizes. Different customers buy different sizes.
  • Step 9: Pulverizer. Glass that’s too big for the primary screen is pulverized with a pulverizer machine. Then it passes through the process again until it can be sorted by the primary rotary screen.
  • Step 10: After going through the primary screen, glass is sent to a secondary screen. Typically, manufacturers need glass that is 12 mesh or smaller. There are several ranges of sizes and each range is used by a different market.


What Is Made Out of Recycled Glass?

A list of items made out of used glass cullet from the recycling plant:

  • Glass container
  • Fiberglass manufacturing
  • Abrasives
  • Binder/flux – brick and ceramic
  • Filler – paint and plastic
  • Hydroponic rooting 
  • Adsorbent and cation exchange
  • Filtration medium
  • Frictionator – matches and ammunition
  • Additive/flux – metal foundry

How Much Are Glass Bottles Worth?

If the glass is recyclable, and if the glass also has a recycling value, then each glass bottle is likely worth $.10. That is how much glass bottles are when recycled.

How Much Does It Cost To Build A Glass Recycling Facility?

how to set up a glass recycling plant

How To Start A Glass Recycling Company?

If you’re wondering how to start a glass bottle recycling business, you’ll be surprised how simple it is. Here’s how to start a glass bottle recycling company.

This is easiest if you have a garage or backyard, and a truck or trailer. 

You’ll have to 

  1. Collect the glass
  2. Clean the glass
  3. Separate the glass into colors
  4. Take it to the recycling plant.

How Window Glass Is Recycled At Recycling Facilities 

Window glass is not recycled at recycling facilities. The chemicals contaminate the recyclable glass. Do not recycle window glass.

How Much Energy Does Recycling Glass Save?

1 ton of recycled glass saves 42 Ksh of energy. That’s 5 gallons of oil – 0.12 barrels, 714,000 BTUs of energy, 7.5 pounds of air pollutants, and 2 cubic yards of landfill space. – source

That is how much energy is saved by recycling one ton of glass.

Why are fewer communities recycling glass?

Only 40 percent of glass thrown into single-stream recycling collections actually gets recycled, currently. 

Glass is completely recyclable. Unfortunately, there are certain facilities that choose to crush the glass and use it as a landfill cover instead.

Many recycling facilities have stopped recycling glass because of the difficulty of separating and cleaning glass. People do not sort or clean it properly, and instead of building new glass recycling plants that can handle this, it’s cheaper to just throw the glass away.

It is only profitable to recycle glass if companies are willing to purchase the recycled glass. If the recycled glass is too expensive, then companies do not purchase the recycled glass. So, without facilities to efficiently separate glass and clean it, the recycling process is too expensive. This is why some waste management companies are not recycling glass anymore, and why your recycling company doesn’t accept glass.

For more information on how to recycle other items checkout our guide for recycling junk and or GUIDE TO SEATTLE RECYCLING RULES

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