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Table 4 Environmental impacts of systems without resources recovery

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

Category

Unit

SN-1 (RCL_LF)

SN-2 (RCL_CP_LF)

SN-3 (RCL_AD_LF)

Value

Process

Value

Process

Value

Process

Fresh water eutrophication

kg P eq

4.5

Nutrients (99%)

6.4 × 10 −4

Phosphate (81%)

1.7 × 10 −3

Electricity (64%)

    

Diesel (18%)

 

Phosphate (28%)

Human toxicity

kg1,4-DCB eq

10.9

LF of papers (69%)

10.5

LF of papers (71%)

11.2

LF of papers (67%)

  

LF of plastics (21%)

 

LF of plastics (22%)

 

LF of plastics (21%)

Particulate matter formation

kg PM10

0.05

Diesel (80%)

0.44

NH3 (93%)

0.28

NH3 (82%).

Fresh water ecotoxicity

kg 1,4-DCB eq

0.86

LF of papers (46.5%)

0.83

LF of papers (48%)

0.86

LF of papers (46%)

  

LF of plastics (43.0%)

 

LF of plastics (45%)

 

LF of plastics (43%)

Climate change

kg CO2 eq

1305

CH4 emission (94%)

91

CH4 emission (93%)

274

CH4 emission (97%)

Terrestrial ecotoxicity

kg 1,4-DCB eq

1.1 × 10 −3

Diesel 35%)

8.7 × 10 −4

Transport (36%)

8.9 × 10 −4

Transport (35%)

  

Transport (27%)

LF of plastics (24%)

 

LF of plastics (32%)

 

LF of plastics (31%)

Photochemical oxidant formation

kg NMVOC eq

0.74

CH4 (76%)

0.14

Diesel (28.5%)

0.3

NO2 (43%)

  

Diesel (18%)

 

NO2 (28.5%)

 

CH4 emission (40%)

    

CH4 emission (21.4%)

 

Diesel (10%)

Terrestrial acidification

kg SO2 eq

0.11

Diesel (64%)

3.18

NH3 emission (98%)

1.86

NH3 emission (94%)

  1. SN Scenario, RCL Recycling, LF Landfilling, CP Composting, AD Anaerobic digestion, DCB Dichlorobenzene, NMVOC Non-methane volatile organic compounds