To purchase nitric acid for the purpose of extracting gold from e-waste, there are several options available online. Here are a few resources where you can find nitric acid:

1. Amazon: You can find nitric acid solutions specifically tailored for gold refining. The product typically includes items like JSP Aqua Regia Gold Refining Supply kits. Here’s the link for reference: Nitric Acid on Amazon.

2. Gold Refining & Metal Extraction Forum: This forum contains threads discussing prices and vendors for nitric acid. Users report buying it for about $40 per liter, which some may consider a bit high, but not unreasonable. More details can be found here: Buying Nitric Acid Forum.

3. Walmart: A user mentioned purchasing nitric acid from Walmart through their app, noting that 32 oz bottles are relatively affordable (about $33). You can check out this option in your local or online store: Walmart Nitric Acid Forum.

4. Other Platforms: There are also sources like eBay from which nitric acid can be bought. Some users have shared experiences of finding good deals there: eBay Nitric Acid Discussion.

5. Gold Recovery Kits: For a more comprehensive approach, consider purchasing a full gold recovery kit that includes nitric acid along with other necessary chemicals and instructions. Such kits are available online, such as the one found here: Gold Recovery Kit.

Process for Removing Gold from E-Waste with Nitric Acid

The process of recovering gold from e-waste using nitric acid typically involves the following steps:

1. Preparation: Collect and prepare the e-waste items you wish to treat. This could include circuit boards, connectors, and other electronic components that contain gold.

2. Chemical Mix: Nitric acid is often mixed with hydrochloric acid to create a mixture called Aqua Regia, which is very effective at dissolving metals, including gold.

3. Dissolving Gold: Submerge the prepared e-waste in the acid mixture. The nitric acid will dissolve impurities and metals, leaving the gold behind.

4. Filtering: After the gold is dissolved, you will need to filter out the remaining solid components, which can usually be done using regular filters.

5. Precipitating Gold: To recover the gold from the solution, a precipitant is added (commonly sodium metabisulfite or ferrous sulfate).

6. Wash and Dry: Once the gold is precipitated, it must be washed, dried, and then can be melted down for further refinement or use.

Please handle nitric acid and all chemicals with great caution, as they can be hazardous. Always wear appropriate safety gear including gloves and goggles, and work in a well-ventilated area.

Sources

Nitric Acid For Gold Refining - Amazon.comGold Recovery & Refining Kit | Complete Chemical Solution for ...Chemical - Buying Nitric Acid | Gold Refining & Metal Extraction ForumWhere to buy Nitric | Gold Refining & Metal Extraction ForumBuying Nitric Acid to refine gold online from Ebay of all places. Got a ...Scrap Gold Recovery Kit, 1 lb Sodium Metabisulfite and 1 lb UreaGold Recovery from Electronics - American Bullion

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