CPC Subgroup
C01B 32/324 from waste materials, e.g. tyres or spent sulfite pulp liquor
Full Title
Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) > Active carbon > Preparation > characterised by the starting materials > from waste materials, e.g. tyres or spent sulfite pulp liquor