Amalgam Recycling Services – find manufacturers and suppliers

Amalgam recycling is an important contribution to environmental protection and resource conservation, as without recycling, the mercury it contains would end up in wastewater treatment plants or landfills.

In many countries, amalgam recycling is a legal obligation for dentists and other waste producers. It ensures that they dispose of their waste in a legally compliant and environmentally friendly manner.

Below you will find an overview of what amalgam is, the aim and processes as well as the typical areas of application of amalgam recycling and a brief overview of its significance:

What is amalgam?

Amalgam is an alloy of mercury and other metals such as silver, tin, copper or zinc.
The best-known use is in dentistry: dentists have been using amalgam as a filling material for decayed teeth for over 150 years because it is durable, resilient and relatively inexpensive.

In addition to dentistry, amalgam is also used in other areas, such as gold extraction (especially in informal mining), where mercury dissolves the gold from ore or sediments, and occasionally in industrial applications such as certain switches or laboratory processes.

Aim of amalgam recycling:

The aim of amalgam recycling is to safely recover the toxic mercury it contains or to dispose of it in an environmentally sound manner in order to avoid health risks and prevent contamination of soil and water.

Amalgam recycling processes:

The recycling process begins at the dentist: modern treatment units have amalgam separators that filter out particles from the waste water. These separators must be emptied regularly and the collected sludge is treated as hazardous waste.

In specialized recycling plants, the process takes place in several steps:

1. Pre-treatment and drying:
   Wet sludge is dried and prepared.
2. Thermal treatment (distillation):
   The amalgam is heated in a closed furnace system. The mercury evaporates and is condensed again by cooling, while the other metals remain as solids.
3. Purification and distillation of the mercury:
   The raw mercury is often purified further to remove impurities and achieve high purities again.
4. Separate recycling:
   The recovered mercury is placed in secure containers for reuse or final storage, while the metal residues can also be treated separately or recycled.

The entire process is designed to prevent emissions and keep the highly toxic mercury in a closed loop.

Typical applications of amalgam recycling:

1.Dentistry:
The use of amalgam in dental fillings is in sharp decline, with many countries restricting or banning it due to environmental and health concerns.
The EU has largely banned the use of amalgam for children and pregnant women and wants to phase it out.
Nevertheless, there are still millions of old amalgam fillings in teeth, so dentists regularly drill out or remove amalgam residues during treatments. These residues contain mercury and are therefore classified as hazardous waste.

2. Gold extraction:
Amalgam plays a significant role in gold extraction, particularly in small-scale, informal or artisanal gold mining (ASGM)
Gold-bearing ore or sediment is mixed with liquid mercury. The mercury selectively combines with gold particles and forms a gold-mercury amalgam. Heating the amalgam vaporizes the mercury, leaving behind the pure gold. The mercury vapor is often released into the environment in an uncontrolled manner.

3. Industrial use:
Mercury amalgams were used as materials for contacts and switches in electrical engineering because they had good electrical conductivity and certain switching properties.
Amalgam only plays a very limited role in industry today because the use of mercury has been severely restricted for environmental and health reasons.

Importance of amalgam recycling:

Amalgam recycling is an important contribution to environmental protection and resource conservation.

• Amalgam contains a high proportion of mercury (around 50%). This mercury is highly toxic to humans and the environment.
• If it is disposed of improperly, it can end up in soil and water and accumulate in the food chain as methylmercury.
• Dentists and laboratories are therefore obliged to collect amalgam waste separately and have it recycled by certified waste disposal companies.
• Recycling not only reduces environmental pollution, but also enables the recovery of valuable mercury for permitted industrial applications.

Amalgam recycling is a specialized process that ensures that the toxic mercury contained in amalgam from dental waste and other sources is not released into the environment. It enables the recovery and safe use or disposal of this hazardous substance and is an essential part of a sustainable and responsible approach to mercury.

Here you will find the most important aspects to consider when commissioning amalgam recycling:

Before commissioning amalgam recycling, you should ensure that the service provider has the necessary certificates for handling hazardous waste and uses environmentally friendly, legally compliant procedures. It is also important to ensure safe collection, proper transportation and complete documentation.

• Before commissioning a recycling company, it is important to be aware that amalgam waste is classified as hazardous waste almost everywhere. In many countries - including the EU and Switzerland - dental practices and laboratories are required by law to collect amalgam waste separately and dispose of it properly.
• You should therefore check this:
• What specific legal requirements apply locally?
• Are there documentation requirements for waste handover?
• Does the company have to be able to prove that the waste has been disposed of or recycled correctly?
• A crucial point is the qualification of the recycling partner. Providers should:
• Have a valid license for handling hazardous waste.
• Have verifiable certifications or official permits,
• Have experience and specialization in amalgam and mercury recycling.
• Reputable service providers are willing to provide information about their license and the recycling process.
• When recycling amalgam, it is important that the mercury it contains is recovered safely or disposed of safely and permanently. The authorized person should:
• Use a closed and safe thermal recovery process in which mercury vapors are condensed in a controlled manner,
• Be able to guarantee that no emissions are released into the environment.
• Offer environmentally sound recycling or disposal of the recovered mercury.
• The recycling company should be able to demonstrate transparently
• How exactly the recycling process works.
• Which material flows are generated (mercury, other metals, residues).
• What happens to the recovered mercury (reuse, safe final disposal).
• How the legal requirements are complied with.
• Good service providers also provide safety data sheets and information on the recycling process.
• The collection and transportation of amalgam waste is subject to dangerous goods regulations. The service provider should offer
• Sealing special containers for the collection of amalgam separator sludge and drilled out filling residues.
• Safe and compliant hazardous goods packaging.
• Professional and approved transportation to the recycling plant.
• Care should be taken to ensure that collection and transportation are carried out without leakage or contamination.
• It is important to have complete documentation on disposal and recycling:
• Many countries require a **proof of waste or transfer bill.
• Recycling companies must be able to confirm that the waste has been handled properly.
• The practice or laboratory retains this evidence to fulfill its own legal requirements.
• Reputable providers issue such certificates automatically.
• In addition to the pure recycling service, the provider can often offer additional services:
• Regular collection (e.g. arranged on a rotational basis in the contract).
• Advice on legally compliant collection and storage in practice.
• Support with the replacement and maintenance of amalgam separators.
• You should clarify in advance which services are included in the price and whether there are any hidden additional costs.

When commissioning amalgam recycling, great importance should be attached to legal compliance, safety and environmental compatibility. It is crucial to choose a certified, experienced and transparent recycling partner that meets all legal requirements, uses safe processes, provides complete evidence and guarantees environmentally friendly treatment of the toxic mercury. This is the only way for your own company to fulfill its responsibility for health and environmental protection.

You can commission amalgam recycling worldwide. Comprehensive information on amalgam recycling providers from all over the world can be found on Exportpages.