Mobilité relative des métaux lourds issus de la décharge d’Akouédo et risque de contamination de la nappe du Continental Terminall (Abidjan - Côte d’Ivoire)

Kouamé, Innocent Kouassi; Gone, Droh Lanciné; Savané, Issiaka; Kouassi, Evelyne Amenan; Koffi, K. B; Goula, Bi Tié Albert; Diallo, Mouhamadou Baïla

doi:10.4314/afsci.v2i1.61133

Cited by 35 publications

(51 citation statements)

References 5 publications

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“…With 153 ha, it receives all the vegetable, animal and industrial waste of the city of Abidjan since 1965. This huge waste is estimated at about 550,000 t per year (Kouame et al, 2006). The decomposition of the various waste could constitute an important source of NH3 emission as shown by our measurements.…”

Section: Ammonia (Nh3)mentioning

confidence: 84%

“…At the east of Abidjan, we also observe on the waste burning site (A15) high 5 concentration of NH3 (39.1 ± 2.1 ppb). This site is located in the village of Akouedo and classified as an uncontrolled dump site of garbage (Kouame et al, 2006). With 153 ha, it receives all the vegetable, animal and industrial waste of the city of Abidjan since 1965.…”

Section: Ammonia (Nh3)mentioning

confidence: 99%

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Spatial distribution of gaseous pollutants (NO2, SO2, NH3, HNO3 and O3) in Abidjan, Cote d'Ivoire

Bahino

Yoboue

Galy‐Lacaux

et al. 2017

Preprint

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Abstract. This work is part of the DACCIWA FP7 program (Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa 10 ) in the framework of the work package 2 « Air Pollution and Health ». This study aims to characterize urban air pollution levels through the measurement of NO2, SO2, NH3, HNO3 and O3 in Abidjan, the economic capital of Cote d'Ivoire. Gases measurements are performed using INDAAF (International Network to study Deposition and Atmospheric chemistry in AFrica) passive samplers exposed in duplicate for two weeks periods. We performed an intensive measurement campaign in Abidjan from December 15 th , 2015 to February 16 th , 2016 during the dry season. Twenty-one sites were selected in the district 15 of Abidjan to be representative of various anthropogenic and natural sources of air pollution in the city. We collected 672 samples of gas during this period. Results from the intensive campaign show that gas concentrations are strongly linked to pollution sources nearby and show a high spatial variability on the different sites of Abidjan. However, three gases present relative higher levels of concentrations at all the sites: NH3, NO2 and O3. NH3 average concentrations vary between 9.1 ± 1.7 ppb at a suburban site and 102.1 ± 9.1ppb at a domestic fires site. NO2 mean concentration vary from 2.7 ± 0.1 ppb at a 20 suburban site to 25.0 ± 1.7 ppb at an industrial site. We measured the two highest O3 concentration on the two coastal sites located in the southeast of the city with average concentration of 19.1 ± 1.7 ppb and 18.8 ± 3.0 ppb respectively for Gonzagueville and the Felix Houphouet-Boigny international airport. The SO2 average concentration never exceeds 7.2 ± 1.2 ppb at all the sites with 71.5 % of the sampling sites presenting concentrations ranged between 0.4 ppb and 1.9 ppb. The HNO3 average concentration is comprised between 0.2 ppb and 1.4 ppb. All these results were combined with meteorological 25 parameters to provide the first mapping of gaseous pollutants at the scale of the district of Abidjan using the geostatistical analysis (ArcGIS software). Spatial distribution results emphasize the importance of the domestic fires source and the significant impact of the traffic emissions at the scale of the city. In addition, we propose in this work a first overview of gaseous SO2 and NO2 concentrations at the scale of several African cities from literature compared to our measurements. The daily SO2 standard of WHO is exceeded in most of the cities reported in the overview where concentrations range from 0.2 30 µg.m -3 -3662 µg.m -3 . Annual NO2 concentrations ranged from 2 µg.m -3 -175 µg.m -3 are lower than the WHO threshold. As a conclusion, this study constitutes an original database to characterize urban air pollution and a first attempt toward a spatialization of the pollution levels at the scale of the metropolis of Abidjan. This work should draw the attention of the African public authorities to the necessity of air quality monitoring network in order to (1) to define national standar...

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Section: Ammonia (Nh3)mentioning

confidence: 84%

Section: Ammonia (Nh3)mentioning

confidence: 99%

Spatial distribution of gaseous pollutants (NO2, SO2, NH3, HNO3 and O3) in Abidjan, Cote d'Ivoire

Bahino

Yoboue

Galy‐Lacaux

et al. 2017

Preprint

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“…With a size of 153 ha, it has received all the vegetable, animal and industrial waste of the city of Abidjan since 1965. This huge waste is estimated at about 550 000 t per year (Kouame et al, 2006). Human waste and its management is a problem in Abidjan that can also explain the concentration levels obtained.…”

Section: Ammonia (Nh 3 )mentioning

confidence: 99%

“…A high NH 3 concentration was also measured at the waste burning site (A 15 ). This site is located in the village of Akouedo and classified as an uncontrolled dump site of garbage (Kouame et al, 2006). With a size of 153 ha, it has received all the vegetable, animal and industrial waste of the city of Abidjan since 1965.…”

Section: Ammonia (Nh 3 )mentioning

confidence: 99%

A pilot study of gaseous pollutants' measurement (NO2, SO2, NH3, HNO3 and O3) in Abidjan, Côte d'Ivoire: contribution to an overview of gaseous pollution in African cities

Bahino¹,

Yoboue²,

Galy‐Lacaux

et al. 2018

Atmos. Chem. Phys.

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Abstract. This work is part of the DACCIWA FP7 project (Dynamics-Aerosol-Chemistry-Cloud Interactions in West Africa) in the framework of the Work Package 2 "Air Pollution and Health". This study aims to characterize urban air pollution levels through the measurement of NO 2 , SO 2 , NH 3 , HNO 3 and O 3 in Abidjan, the economic capital of Côte d'Ivoire. Measurements of inorganic gaseous pollutants, i.e. NO 2 , SO 2 , NH 3 , HNO 3 and O 3 were performed in Abidjan during an intensive campaign within the dry season (15 December 2015 to 16 February 2016), using INDAAF (International Network to study Deposition and Atmospheric chemistry in AFrica) passive samplers exposed in duplicate for 2-week periods. Twenty-one sites were selected in the district of Abidjan to be representative of various anthropogenic and natural sources of air pollution in the city. Results from this intensive campaign show that gas concentrations are strongly linked to surrounding pollution sources and show a high spatial variability. Also, NH 3 , NO 2 and O 3 gases were present at relatively higher concentrations at all the sites. NH 3 average concentrations varied between 9.1 ± 1.7 ppb at a suburban site and 102.1 ± 9.1 ppb at a domestic fires site. NO 2 mean concentration varied from 2.7 ± 0.1 ppb at a suburban site to 25.0 ± 1.7 ppb at an industrial site. Moreover, we measured the highest O 3 concentration at the two coastal sites of Gonzagueville and Félix-Houphouët-Boigny International Airport located in the southeast of the city, with average concentrations of 19.1 ± 1.7 and 18.8 ± 3.0 ppb, respectively. The SO 2 average concentration never exceeded 7.2 ± 1.2 ppb over all the sites, with 71.5 % of the sampling sites showing concentrations ranging between 0.4 and 1.9 ppb. The HNO 3 average concentration ranged between 0.2 and 1.4 ppb. All these results were combined with meteorological parameters to provide the first mapping of gaseous pollutants on the scale of the district of Abidjan using geostatistical analysis (ArcGIS software). Spatial distribution results emphasize the importance of the domestic fires source and the significant impact of the traffic emissions on the scale of the city. In addition, in this work we propose a first overview of gaseous SO 2 and NO 2 concentrations on the scale of several African cities by comparing literature to our values. The daily SO 2 standard of World Health Organization (WHO) is exceeded in most of the cities reported in the overview, with concentrations ranging from 0.2 to 3662 µg m −3 . Annual NO 2 concentrations ranged from 2 to 175 µg m −3 , which are lower than the WHO threshold. As a conclusion, this study constitutes an original database to characterize urban air pollution and a first attempt towards presenting a spatial distribution of the pollution levels at the scale of the metropolis of Abidjan. This work should draw the attention of the African public authorities to the necessity of building an air quality monitoring network in order to (1) to define national standards and to bette...

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“…Les études effectuées par Kouadio et al (2000) sur la pollution chimique des eaux de la zone de la décharge ont montré une forte pollution organique et minérale des eaux de la baie de M'Badon suite au déversement du lixiviat dans ces eaux. Aussi, les travaux de Kouamé et al (2006b) Par ailleurs, dans la vie d'une décharge, deux événements importants peuvent se produire : une courte période de décomposition aérobie et une longue période de décomposition anaérobie. Cette dernière se fait en deux phases, une phase acide suivie de la phase de méthanisation (Erses et al, 2005).…”

Section: Introductionunclassified

Caractéristiques et impact de la pêche artisanale sur l\'exploitation de Labeo senegalensis (Valenciennes, 1842) dans la basse vallée du fleuve Ouémé au Bénin

Montchowui¹,

Tobada²,

Chikou³

et al. 2009

International Journal of Biological and Chemical Sciences

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RESUMEDurant ces dernières années, plusieurs cas de pollution des eaux de proximité ont été signalés dans la littérature. Afin de caractériser la pollution chimique et microbiologique de l'environnement de la décharge d'Akouédo, des analyses physico-chimiques (métaux lourds et nutriments) et microbiologiques ont été effectuées sur les lixiviats issus de la décharge. Le sol de la décharge a été soumis à l'analyse d'une large gamme de métaux lourds (Fe, Cd, Cu, Zn, Mn, Pb, Hg, Cr, Mg). La composition du biogaz émanant de la décharge a été également mesurée à partir de puits forés sur le site. Les concentrations des paramètres (métaux, nutriments, indicateurs bactériologiques, DBO 5 et DCO) dans le lixiviat sont plus élevées que celles recommandées par le Centre Ivoirien Antipollution (CIAPOL) pour le rejet des effluents. On observe une forte concentration des métaux dans les sols de la décharge. Les valeurs basiques du pH du sol pourraient favoriser les phénomènes d'absorption des métaux lourds et limiter leur migration vers les nappes d'eau souterraine. Le biogaz émanant de la décharge est composé essentiellement de CH 4 (70%) et de CO 2 (29%). Le rapport CH 4 /CO 2 est élevé, supérieur à 2, ce qui traduit l'anoxicité du milieu et sa grande capacité à produire le méthane. La décharge d'Akouédo constitue donc un important puits de production de gaz à effet de serre.

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Mobilité relative des métaux lourds issus de la décharge d’Akouédo et risque de contamination de la nappe du Continental Terminall (Abidjan - Côte d’Ivoire)

Cited by 35 publications

References 5 publications

Spatial distribution of gaseous pollutants (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Cote d'Ivoire

Spatial distribution of gaseous pollutants (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Cote d'Ivoire

A pilot study of gaseous pollutants' measurement (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Côte d'Ivoire: contribution to an overview of gaseous pollution in African cities

Caractéristiques et impact de la pêche artisanale sur l\'exploitation de Labeo senegalensis (Valenciennes, 1842) dans la basse vallée du fleuve Ouémé au Bénin

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Mobilité relative des métaux lourds issus de la décharge d’Akouédo et risque de contamination de la nappe du Continental Terminall (Abidjan - Côte d’Ivoire)

Cited by 35 publications

References 5 publications

Spatial distribution of gaseous pollutants (NO&lt;sub&gt;2&lt;/sub&gt;, SO&lt;sub&gt;2&lt;/sub&gt;, NH&lt;sub&gt;3&lt;/sub&gt;, HNO&lt;sub&gt;3&lt;/sub&gt; and O&lt;sub&gt;3&lt;/sub&gt;) in Abidjan, Cote d'Ivoire

Spatial distribution of gaseous pollutants (NO&lt;sub&gt;2&lt;/sub&gt;, SO&lt;sub&gt;2&lt;/sub&gt;, NH&lt;sub&gt;3&lt;/sub&gt;, HNO&lt;sub&gt;3&lt;/sub&gt; and O&lt;sub&gt;3&lt;/sub&gt;) in Abidjan, Cote d'Ivoire

A pilot study of gaseous pollutants' measurement (NO&lt;sub&gt;2&lt;/sub&gt;, SO&lt;sub&gt;2&lt;/sub&gt;, NH&lt;sub&gt;3&lt;/sub&gt;, HNO&lt;sub&gt;3&lt;/sub&gt; and O&lt;sub&gt;3&lt;/sub&gt;) in Abidjan, Côte d'Ivoire: contribution to an overview of gaseous pollution in African cities

Caractéristiques et impact de la pêche artisanale sur l\'exploitation de Labeo senegalensis (Valenciennes, 1842) dans la basse vallée du fleuve Ouémé au Bénin

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Spatial distribution of gaseous pollutants (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Cote d'Ivoire

Spatial distribution of gaseous pollutants (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Cote d'Ivoire

A pilot study of gaseous pollutants' measurement (NO<sub>2</sub>, SO<sub>2</sub>, NH<sub>3</sub>, HNO<sub>3</sub> and O<sub>3</sub>) in Abidjan, Côte d'Ivoire: contribution to an overview of gaseous pollution in African cities