Vol. 8 & Issue 1 ; Section D : Environmental Sciences

Date : Nov.2017 to Jan.2018

 

Analysis of GHG emission reduction options for the Waste sector by 2035 in Togo on the basis of trend data from the time series 1995-2015

BODJONA Bassaï Magnoudéwa; SABI Kokou; TCHEGUENI Sanonka;BAFAI Diyakadola Dihéénane; KOLEDZI Edem; KORIKO Moursalou;TCHANGBEDJI Gado

  • Abstract

    Togo is still struggling to overcome the difficulties associated with its waste management. The real environmental constraints linked to its cities development are reflected in the absence of public space to house transit depots, transfer stations and final waste dumps. The adverse impacts affect population and environment health as a result of greenhouse gas (GHG) emissions. Data collection based on a consultation of all the actors involved in the waste management made it possible to calculate the emissions of the period 1995-2015 according to the IPCC 2006 methodologies shows that in 2013, carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) are emitted at 11.28; 5.10 and 0.23 Gg respectively giving a total of 189.68 Gg CO2-e. These emissions have increased steadily between 1995 and 2015. The trend has led to the baseline for three mitigation scenarios development by 2035, taking into account the means and modes of waste management. The first scenario, which aims at the general collection of waste, their burial and the recovery of part of the biogas for energy purposes, will avoid the emission of 275.33 Gg CO2-e. The second, which avoids 349.48 Gg CO2-e combines the first scenario with the composting of 60% of the fermentable fraction of waste and the recycling of 50% of paper-cartons. The third scenario will avoid 165.36 Gg CO2-e aims to improve domestic wastewater management. These scenarios will contribute not only to GHG emissions reduction but also to the living environment improvement, waste recovery, biogas production and jobs creation.