秋田県エコタウンセンター
エコタウンセンター 秋田県北部エコタウン 地球と未来のために 産業遺産・環境産業観光プログラム 環境・リサイクル施設の見学お申し込み

 「地球」と「環境」

金属リサイクル-都市鉱山

The below products, which used to considered waste after being used, contain valuable rare metals and are now drawing attention as an "urban mine."
イラスト Producing metals requires digging, concentrating, and refining ores. Rare metals, which are needed for manufacturing cars, IT products, and home appliances, are especially rare and maldistributed throughout the world. Because of this, their prices surge as demand increases. It is also extremely costly and time-consuming to import them, which leads to egregious CO2 emissions.
It is crucial to work towards a low-carbon society in order to prevent global warming: a goal which the mining community is also actively committed to. Used home appliances in Japan, one of the world's biggest consumers of rare metals, contain a large amount of precious and rare metals. Such recyclable resources are referred to as an "urban mine," which are highly expected to promote recycling and reproduction.
While only 5g of gold can be extracted from one ton of ore, 200g - 300g of gold is obtained from one ton of cell phones.

日本のレアメタル等蓄積量

According to the National Institute for Materials Science's January 2008 estimate, there are 6,800 tons of gold (16% of 42,000 tons in the world), 60,000 tons of silver (22%), indium (61%), and tin (11%) accumulated in Japan, which means Japan has more than 10% of the world's precious and rare metal deposits.  

エコロジカルリュックサックとは

  An Ecological Rucksack is an indicator of the weight of resources that need to be moved to produce a certain goods. Simply put, it means "how much was moved and how much environmental stress was exerted to make a certain goods." For example, is necessary to move three tons of natural resources, such as ores, earth, and sand. Therefore, the weight of the ecological rucksack would be three tons. Metal recycling is said to be effective in reducing the weight of the ecological rucksack.
Copyright(C) Akita Eco Town Center. All Right Reserved. | Top page |