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Table 9 Sensitivity analysis on 5% improvement of process and resources recoveries

From: Life cycle analysis of potential municipal solid wastes management scenarios in Tanzania: the case of Arusha City

Categories

Unit

 

Electricity

CH4

Diesel

Paper

Plastic

NH3

Freshwater eutrophication

kg P eq

SN-1

–

–

–

–

–

–

SN-2

–

–

6 × 10 −6

2 × 10 - 5

1 × 10 - 6

–

SN-3

5 × 10 - 5

–

–

2 × 10 - 5

–

–

Human toxicity

kg1,4-DCB eq

SN-1

–

–

0.02

0.41

0.11

–

SN-2

–

–

–

0.4

0.11

–

SN-3

0.04

–

0.01

0.41

0.12

–

Particulate matter formation

kg PM10

SN-1

–

–

–

–

–

–

SN-2

–

–

–

–

–

0.02

SN-3

–

–

–

–

–

0.01

Freshwater ecotoxicity

kg 1,4-DCB eq

SN-1

–

–

–

0.02

0.02

–

SN-2

–

–

–

0.02

0.02

–

SN-3

–

–

–

0.02

0.02

–

Climate change

kg CO2 eq

SN-1

0.02

61

0.49

3.7

0.03

–

SN-2

–

0.93

0.18

3.7

0.03

–

SN-3

0.1

10

0.1

3.7

0.03

–

Terrestrial ecotoxicity

kg 1,4-DCB eq

SN-1

–

–

2 × 10 −5

1 × 10 - 5

1 × 10 - 5

–

SN-2

–

–

8 × 10 −6

6 × 10 - 6

1.4 × 10 −5

–

SN-3

3 × 10 - 6

–

4 × 10 −6

6 × 10 - 6

1.4 × 10 − 5

–

Photochemical oxidant formation

kg NMVOC eq

SN-1

–

0.03

0.01

–

–

–

SN-2

–

–

–

–

–

–

SN-3

–

0.01

–

–

–

–

Terrestrial acidification

kg SO2 eq

SN-1

–

0.01

0.01

–

–

–

SN-2

–

–

–

–

–

0.16

SN-3

–

–

–

–

–

0.08

  1. SN-1; RCL_LF, SN-2; (RCL_CP_LF) and SN-3; (RCL_AD_LF), where RCL Recycling, LF Landfilling, CP Composting, AD Anaerobic digestion, DCB Dichlorobenzene, NMVOC Non-methane volatile organic compounds