About
41
Publications
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Introduction
Hocine Ali-Khodja is a Professor and Director of Research specializing in Environmental Chemistry, Air Quality, and Pollution Control. His research focuses on understanding and mitigating the environmental and health impacts of air pollution, with a particular emphasis on Saharan dust and its role in air quality, climate, and public health in arid and semi-arid regions like Algeria.
Current institution
Additional affiliations
February 1984 - present
Position
- Professor (Full)
Description
- Professor & Director of Research, Université Frères Mentouri-Constantine 1. Expert in air quality, pollution control, and environmental impact assessment. Focus: particulate matter, trace metals, biodegradation of VOCs, desert dust. Published in Journal of Hazardous Materials, Atmospheric Environment. Leader of international projects on urban air pollution and health impacts.
Education
September 1996 - December 1998
September 1994 - July 1996
September 1981 - March 1983
The University of Manchester
Field of study
- Corrosion science and engineering
Publications
Publications (41)
Given the critical environmental and health implications of atmospheric deposition, this study examined the long-term variations in atmospheric dust and trace element deposition in Didouche Mourad, Algeria, from 21/6/2002–20/6/2003 (P1) to 21/12/2017–20/12/2018 (P2), a period marked by significant industrial and infrastructural changes. Using a net...
Chemical characterization of PM2.5 (major and trace elements) was carried out for a source apportionment study of PM2.5 at a traffic site in Constantine, Algeria, from March 2017 to March 2018. For this purpose, several tools were used of which PMF, CPF, PSCF, Spearman correlation matrix and HYSPLIT back trajectories. The mean annual concentration...
Measurements of Saharan dust (SD) inputs are very scarce in the vicinity of the Saharan desert. This work aims to identify Saharan dust intrusions and evaluate their contribution to annual and daily PM10 at an urban background site located in the city of Constantine in Algeria. A reliable identification of SD days was carried out using aerosol maps...
This study presents for the first time, the results of a one-year measurement campaign on ambient PM10 (particulate matter with aerodynamic diameter less than 10 μm) at an urban site at Zouaghi, in the south of Constantine, Algeria. The main objective of this work was to provide PM10 mass concentrations, a chemical characterization of atmospheric p...
Acid deposition was evaluated around a sulfuric acid plant situated near Annaba in the east of Algeria. According to the local meteorological station of Annaba, the precipitating and the non-precipitating clouds over the area surrounding the plant at a radius of 10 km are too high to be reached by SO2-containing plumes. Removal by wet deposition is...
In this work, we had explained the contribution of intrusion of Saharan dust on the PM10 in the city of Constantine. We had brievelly explained the goal, the methods and the results obtained after the experience. The details are shown on the presentation paper.
Actinobacteria have many properties that make them good candidates for the bioremediation of sites contaminated by several organic and inorganic pollutants. However, studies on the biodegradation of used motor oils by Actinobacteria, compared to other bacteria, remain little studied. Actinobacteria were isolated from soil contaminated with used mot...
Exposure to fine airborne particles causes deleterious health effects, particularly in urban zones where pollution levels are often high, particularly near heavily trafficked roads. A quantitative and qualitative estimate of PM2.5 emissions is a prerequisite for developing effective control strategies to mitigate their effects. To achieve this obje...
L'exposition aux particules fines en suspension dans l’air provoque des effets délétères
sur la santé, en particulier dans les centres urbains où les niveaux de pollution sont
souvent élevés, particulièrement aux abords des routes où le trafic est dense. Une
estimation quantitative et qualitative des émissions de PM2.5 est une condition préalable à...
In this study, we tested the ability of Streptomyces to use for their growth benzene, toluene, ethylbenzene, and o-, m-, p-xylenes as sole source of carbon and energy. These bacteria were isolated from agricultural soils and activated sludge samples from a wastewater treatment plant. The results show that Streptomyces are capable of degrading at le...
Exposure to PM10 containing metallic elements is a major health concern, particularly in urban areas, the aim of this work is to characterize the metal fraction of fine particles emitted in urban areas and identify their main sources. PM10 samples were collected at the urban site of Zouaghi for a yearlong period (January 2015-February 2016) using a...
Benzene and its derivatives, toluene, ethylbenzene and xylenes (BTEXs) are volatile monocyclic aromatic compounds which are widely distributed in nature and highly hazardous to human and animal health. The species belonging to the genus Nocardia are filamentous bacteria widely present in the flocs of activated sludge. They lead to the formation of...
In order to assess the significance of PM in ambient air, it is necessary to evaluate their physical and chemical characteristics as well as identify their major emission sources. On a global scale, particulate matter in the atmosphere arises mainly from the combustion process of motorized vehicles, but natural sources are still considered as the m...
This work aims to interpret the results of a PM10 measurement campaign from January 15, 2015 to February 15, 2016 with a sampling interval of 6 days. The main objective is to determine the contribution of mineral dust to PM10 in the city of Constantine. The concentration and composition of PM10 samples were monitored at an urban background site loc...
From an agricultural soil sample from the region of Ain M'Lila and a sample of activated sludge from the Ibn Ziad-Constantine wastewater treatment plant, we isolated respectively 80 and 18 phenotypically different actinobacteria. The samples in question were the subject of a physic-chemical analysis. Firstly, we conducted a functional study by test...
When high mineral loads in atmospheric particulate matter (PM) are present, particular attention should be paid to the selection of appropriate acidic digestion protocols for wet chemical analysis. We report on a comparative study of elemental recovery yields from five different pre-analytical acid digestion procedures for mineral-rich urban backgr...
In general, much of the air pollution that has adverse impacts on human health and the environment today is the result of anthropogenic activities. Road traffic has led to increase in many air pollutants to levels around the world. It is considered as one of an important source of particulate matter in Africa. Information on PM concentrations and i...
A comparative study of three different aerosol extraction processing techniques was carried out on ten quartz fiber PM10 sampling filters and a standard material (P1633b Fly Ash). Simultaneous sampling of PM10 was conducted at an urban background site in the town of Constantine. Three different mixtures of reagents were chosen in order to achieve t...
The purpose of this study was to identify the different Sources of PM10 and some metallic elements (Pb, Cu, Zn, Fe, K, Ca, Na, Mg) at a traffic site at Zouaghi, in the south of Constantine, using factor analysis (FA) to categorise the different trace elements according to their origin and the enrichment factor (EF) to identify terrigenous elements...
It is about a comparative study of three different aerosol extraction processing techniques
measurement of fine particles at a trafic site
Volatile organic compounds are considered as major sources of air pollution. They cause toxicity problems, bad odors, global warming, etc. Methyl ethyl ketone (MEK) is used in the formulation of lacquer type paints, varnishes, cleaners, thinners, etc. and in many other industries such as the manufacture of synthetic leather and in the decaffeinatio...
Very few previous investigations of respirable PM have been undertaken in the city of Constantine, Algeria. In general, air quality in Algeria and other Maghreb countries has not been extensively studied because of the insufficient number of researchers involved in this field and the unreliability of the few air quality monitoring networks installe...
measurement of fine particles and assossiated trace elements
Samples of particulate matter less than or equal to 10 μm (PM10) were collected every other day using an Airmetrics MiniVol portable air sampler in Constantine, the third largest and most densely populated city of Algeria with a population of 600,000. The main objective of this study was to assess the concentrations of particulate matter (PM) with...
No previous investigations of airborne particulate and trace metal levels have been undertaken in the area surrounding the
cement plant located in the vicinity of the town of Didouche Mourad. The impact of this plant has been the subject of much
controversy. Data related to suspended matter would therefore be very useful and informative. This town...
The study of the biodegradability of organic substances is essential in determining the behaviour of volatile organic compounds in natural environments or a biological system for effluent treatment. The present study contributes to the comprehension of the biological phenomena controlling the degradation of methanol in a series of batch-mode operat...
In the work reported here, the removal of methyl ethyl ketone from waste gases in a novel bioreactor type was studied experimentally within the pollutant loading range of 0.35 to 16.2 kg mr-3 d-1. The solvent eliminating performance of the bioreactor described in this paper is reflected by a maximum methyl ethyl ketone elimination capacity ECmax =...
Particle deposition rates were measured using a network of nine gauges installed at different locations around a cement plant located south of the city of Constantine and close to the town of Hamma Bouziane from September 2002 to April 2003. Samples were collected at 30-day intervals. Pb, Cr, Mn, Ni, Cu, Co and Cd deposition fluxes were determined...
A novel type of bioreactor was designed to clean VOCs-containing air.The operation of this reactor consists in mixing the polluted gas and a mistof nutrient solution in the presence of microorganisms in order to maximizecontact and transfer between gas, liquid and microorganisms and to promotethe degradation kinetics and the relative removal effici...
Odor control and air pollution stemming from volatile organic compounds (VOCs) are becoming an increasingly serious problem. Several biological techniques are currently considered as promising solutions in this area, including biofilters, bio-washers and biotrickling filters (Groenestijn and Hesselink, 1993). These three techniques are well known t...
