コンクリート廃棄物を利用した水質浄化技術

Abstract

Concrete is an essential material for construction and human society, and it is used in large quantities all over the world. Considering achievement of a circular society, it is important to properly treat and reuse various wastes derived from the use of concrete. The hydrated cement part of concrete contains highly reactive alkaline calcium compounds, such as calcium hydroxide, calcium silicate hydrates, and ettringite, which can be used in water-purification methods. This article introduces various fundamental investigations for using concrete waste for waterpurification techniques, such as removal of phosphorus, arsenic, and boron.