Page 105 - Materials Chemistry, Second Edition

86 Life Cycle Assessment of Wastewater Treatment

–0.286 kg Manganese oxide (Mn203), at –90.7%

–0.629 kg BP final –198% –0.343 kg Carbon black, at plant/GLO S –107%

–1.12 kg Zinc oxalate –211% –0.476 kg Zinc, primary, at regional –211%

1 kg Alkaline batteries Zn/C –3.66 kg Potassium sulphate, as
100% –690%

15.1 MJ Electricity, medium voltage, 358% LCA tree diagram of the hydrometallurgical process. Percentage values refer to the contribution of each process to GWP for the treat-

1 kg BP1 0.429 kg Carbon black, at plant/GLO S
330% 134%

13.3 kg Tap water, at user/CH S 0.292% 0.333 kg Manganese oxide (Mn203), at 106%

1.6 kg Potassium carbonate, at 488% 0.238 kg Zinc oxide, at plant/RER S 90.1%

0.0163 kg Potassium hydroxide, at 4.07%

1.14 kg Sulphuric acid, liquid, at 18.6% ment of 1 kg of alkaline batteries.
FIGURE 5.3