43 kg of gold and 1070 kg of gadolinium going to the sewerage of Switzerland annually

The gold and silver each amounting to around 1.5 million Swiss Francs (1 million US Dollars) a year is lost via effluents and sludge from wastewater treatment plants in Switzerland.

Gold concentration in sludge

Gold concentration in Swiss sludge

Platinum concentration in sludge

Platinum concentration in Swiss sludge

Annually the Swiss are drained into sewerage: 3000 kg of silver, 1070 kg of gadolinium, 1500 kg of neodymium, 150 kg of ytterbium.

The concentrations of 69 elements in digested sewage sludge and effluent samples from 64 municipal wastewater treatment plants as well as in major rivers in Switzerland.

Source: pubs.acs.org

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