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Table 6

Annual variable operating parameters (k€/y)

Case study 1Case study 2
Raw materials (k€/y)   
Initial wastewater 0.00 0.00 
Sodium hydroxide solution (20%) 7.16 7.16 
Washing water 0.00 0.67 
Hydrogen peroxide (30%) 0.00 99.00 
Iron sulfate solid 0.00 31.68 
Sulfuric acid (96%) 0.00 4.51 
Calcium hydroxide 0.00 7.13 
Total 7.16 150.15 
Utilities (k€/y)   
Electricity 32.08 227.88 
Cooling water (20–35 °C) 177.41 140.3 
Steam (152 °C) 69.53 56.07 
Total 279.01 424.25 
Others (k€/y)   
Waste management (transport and landfill) 48.95 72.55 
Maintenance and repairs 37.01 37.08 
Personal cost 792 792 
Total 878.08 902.35 
Case study 1Case study 2
Raw materials (k€/y)   
Initial wastewater 0.00 0.00 
Sodium hydroxide solution (20%) 7.16 7.16 
Washing water 0.00 0.67 
Hydrogen peroxide (30%) 0.00 99.00 
Iron sulfate solid 0.00 31.68 
Sulfuric acid (96%) 0.00 4.51 
Calcium hydroxide 0.00 7.13 
Total 7.16 150.15 
Utilities (k€/y)   
Electricity 32.08 227.88 
Cooling water (20–35 °C) 177.41 140.3 
Steam (152 °C) 69.53 56.07 
Total 279.01 424.25 
Others (k€/y)   
Waste management (transport and landfill) 48.95 72.55 
Maintenance and repairs 37.01 37.08 
Personal cost 792 792 
Total 878.08 902.35 
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