Waste ManagementExtracting Gold and Platinum from the Sewage by Axel BarrettAugust 23, 2021August 24, 2021 Expected output is 10 kg of gold and 1 kg of platinum per one million citizen per year. Subscribe Now! This content is only available to paid subscribers. Buy a subscription today. More Info buy Log in Share this:Tweet Echo Instruments, Technology to Measure & Analyse Plastic Biodegradation (FREE) Recyclass, Unilever & UK Plastic Packaging Tax Like this:Like Loading...