Volume 39, Issue 2, April 2023, Pages 787–799
Tchoumou Martin1, Ndokadiki Rêve Charlène2, Ngoro-Elenga Ferland3, and Engambe Christ Bardol4
1 Unity of Plant and life chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
2 Unity of Plant and life chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
3 Laboraoty of inorganic chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
4 Laboraoty of inorganic chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
Original language: English
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
One of the biggest problems with landfilling waste is the landfill leachate that is produced when water passes through the waste. The composition of the leachate obviously depends on the nature of the buried waste, the presence of fermentable organic matter and the climatic conditions combined with the mode of operation of the site. The objective of this study is to make a physicochemical characterization of leachate from two public landfills in Brazzaville. To carry out this characterization, we made a series of leachate sampling from December 2021 to February 2022. The potentiometric and colorimetric methods were used for the determination or different parameters. During this period, the physicochemical analyzes carried out on these samples revealed high levels of biodegradable organic matter, with nitrates, chlorides and phosphates levels below the WHO standard. For the metals, we note the total absence of Pb in the two landfills. The Fe, Zn, and Cu contents do not exceed the WHO standard, while the Cd content for tsiémé landfill exceeds the WHO standard. The average value of the ratio (BOD5/COD) is 0.34 for the two sites, which shows that it is the intermediate leachate.
Author Keywords: leachate, characterization, parameters, biodegradability, landfill, Brazzaville.
Tchoumou Martin1, Ndokadiki Rêve Charlène2, Ngoro-Elenga Ferland3, and Engambe Christ Bardol4
1 Unity of Plant and life chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
2 Unity of Plant and life chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
3 Laboraoty of inorganic chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
4 Laboraoty of inorganic chemistry, Faculty of Sciences and Technology, Marien NGOUABI University, Brazzaville, Republic of the Congo
Original language: English
Copyright © 2023 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
One of the biggest problems with landfilling waste is the landfill leachate that is produced when water passes through the waste. The composition of the leachate obviously depends on the nature of the buried waste, the presence of fermentable organic matter and the climatic conditions combined with the mode of operation of the site. The objective of this study is to make a physicochemical characterization of leachate from two public landfills in Brazzaville. To carry out this characterization, we made a series of leachate sampling from December 2021 to February 2022. The potentiometric and colorimetric methods were used for the determination or different parameters. During this period, the physicochemical analyzes carried out on these samples revealed high levels of biodegradable organic matter, with nitrates, chlorides and phosphates levels below the WHO standard. For the metals, we note the total absence of Pb in the two landfills. The Fe, Zn, and Cu contents do not exceed the WHO standard, while the Cd content for tsiémé landfill exceeds the WHO standard. The average value of the ratio (BOD5/COD) is 0.34 for the two sites, which shows that it is the intermediate leachate.
Author Keywords: leachate, characterization, parameters, biodegradability, landfill, Brazzaville.
How to Cite this Article
Tchoumou Martin, Ndokadiki Rêve Charlène, Ngoro-Elenga Ferland, and Engambe Christ Bardol, “Physicochemical characterization of leachates from two landfills in Brazzaville, Republic of Congo,” International Journal of Innovation and Applied Studies, vol. 39, no. 2, pp. 787–799, April 2023.
