| abstract |
(57) [Summary] [PROBLEMS] The present invention reverses a large amount of waste that is generated when agricultural and marine products are used as food or other materials, is troubled at dumping sites, and is stuck as pollution. In terms of performance, expensive carbon-based adsorbents and recycling, technically, it has made significant progress and economics, The task is to provide innovative recycling technologies that bring enormous benefits to the national community. SOLUTION: In the present invention, agricultural and marine resources such as vegetables, cereals, meat, seaweed, and fish are used in a range of 400 to 80 as solutions. Carbonized at 0 [° C.] to obtain a carbonaceous material, to which an aqueous solution of at least one sulfate selected from copper, iron, manganese, and zinc is adsorbed, metal ions are impregnated, dried, and pulverized. After that, a water-soluble polyvinyl alcohol and / or calcined gypsum was used as a binder, and a granulated, dried and hardened carbide and a method for producing the same were developed and started. |