Table 3 Inputs and outputs referred to 1 kg of chromium recovery from leather waste treatment.

From: Environmental and energy analysis of chromium recovery from residual tanned leather using alkaline thermal hydrolysis

Items

Component

Unit

Amount

Input

Leather waste

kg

31.51

Water

kg

122.27

Sodium hydroxide

kg

3.78

Intermediate product

Biogas

kWh

38.87

Output

Chromium

kg

1

Nitrogen fertilizer

kg

2.60

Electricity

kWh

14.70

Heat

kWh

10.50

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