Treatment of dairy wastewater by electrocoagulation process: Advantages of combined iron/aluminum electrodes

Publication Scientifique
B. CHEZEAU,L. BOUDRICHE ,C. VIAL ,A. BOUDJEMAA Received 23 Feb 2019, Accepted 28 Jun 2019, Published online: 15 Jul 2019 JournalSeparation Science and Technology Volume 55, 2020 - Issue 14 ABSTRACT: The objective was to assess the efficiency of electrode material in an electrocoagulation (EC) process for wastewater treatment by comparing the efficiency of aluminum (Al–Al), iron (Fe–Fe) and combined Fe–Al electrodes. The treatment of synthetic dairy wastewater, characterized by high levels of 5-day biological oxygen demand (BOD5) and chemical oxygen demand (COD), was used to compare electrode materials. Experimental results showed that all electrodes materials achieved the same final removal yield in the range of current studied (55% COD, 60% total organic carbon, 90% total nitrogen, and nearly 100% turbidity) when equilibrium was achieved. But at fixed current density and initial concentration of…
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Effect of cultivar and year of harvest on the mineral composition of Algerian extra-virgin olive oils

Publication Scientifique
K. BENAMIROUCHE-HARBI, S. KECIRI , Z.  SEBAI, H. BENAMIROUCHE, L. BOUDRICHE,  March 2020Spanish Journal of Agricultural Research Abstract : Aim of study: To evaluate the effect of cultivar and year of harvest on the content of mineral elements of Algerian extra virgin olive oils. Area of study: Technical Institute of Arboriculture of Fruits and Vine (TIAFV), Bejaia, Algeria. Material and methods: The mineral contents of extra virgin olive oils from ten cultivars during two consecutive campaigns 2014/2015 and 2015/2016 were determined using atomic absorption spectrometry and absorption in a graphite furnace after microwave-assisted acid digestion. Principal component analysis was applied to correlate the mineral content with cultivar type and year of harvest. Main results: Mean concentrations for Fe, Zn, Cu, Na, K, Mg, As and Co in samples were observed in the range of…
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Temporal variation of PM10, PM2.5 and gaseous pollutants (NOx, SO2) particles suspended in the atmosphere of an urban sit in Bou-Ismail.

Publication Scientifique
A. Lemou, L. Rabhi, N. Cherifi, R. Ladji, N. Yassaa Journal of Environmental Science and Technology Abstract Abstract:  In this work, we studied the daily variations of concentration of PM10, PM2.5 and gaseous pollutants at Bou-Ismail industrial area. An Airpointer carried out the different measurements during the month of February. This study revealed that PM10 and PM2.5 concentrations ranged from 1.65 μg/m3 to 38.66 μg/m3 and from 0.75μg/m3 to 12.77 μg/m3 respectively. The highest concentrations were recorded on 23 February with 38.66 μg/m3 in PM10 and 12.77 μg/m3 in PM2.5. This concentration is certainly related to the high road traffic density. It is important to note that PM10 and PM2.5 concentrations did not exceed the WHO limit (50 μg/m3) and the Algerian regulation (80 μg/m3). Variations in the mean hourly concentrations of NO and NO2 show stability during the midnight period until 7:00…
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تدشين الارضية التقنية في التحاليل الفيزيائية والكيميائية بجامعة ورقلة

تدشين الارضية التقنية في التحاليل الفيزيائية والكيميائية بجامعة ورقلة

À LA UNE, Gallerie Photos
في إطار زيارة وزير التعليم العالي والبحث العلمي لجامعة ورقلة قام السيد وزير التعليم العالي والبحث العلمي البروفيسور عبد الباقي بن زيان بتدشين الارضية التقنية في التحاليل الفيزيائية والكيميائية التابعة لمركز البحث العلمي والتقني في التحاليل الفيزيائية والكيميائية ببواسماعيل والمتواجدة بجامعة ورقلة.إن هذا الصرح العلمي ماهو إلا ثمار إستراتيجية المديرية العامة للبحث العلمي والتطوير التكنولوجي في دعم وخلق أقطاب جهوية للمصالح المشتركة في جميع انحاء الوطن إن شاء الله ستعود بالفائدة على البحث العلمي والرفع من التكوين البيذاغوجي مع مرافقة القطاع الاقتصادي والإجتماعي بولاية ورقلة
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Bioactive Compounds from the Flower Part of Polygonum maritimum L. Collected from Algerian Coast

Publication Scientifique
Author(s): Imad Abdelhamid El Haci*, Wissame Mazari, Fawzia Atik-Bekkara, Fatma Mouttas-Bendimerad, Fayçal Hassani Abstract: Background: Polygonum maritimum is one of the spontaneous halophyte plants of the Algerian coast. Many studies were carried out to evaluate the contents and the quality of phenolic compounds of this plant around the Mediterranean region. Objective: This paper intends to identify, for the first time, the phenolic compounds from the flower part of P. maritimum. Methods: RP-HPLC-PDA (Reversed Phase-High Performance Liquid Chromatography-Photo Diode Array) material was used for this purpose. Many standards were used and their retention times were stored in a local database. Identification was made on the basis of retention times of retained compounds and those found in the literature, and UV spectra of each peak. Results: This study intends to identify five phenolic acids (gallic, ferulic, sinapic,…
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2D Carbon Materials as Photocatalysts

Publication Scientifique
Amel Boudjemaa First published: 08 May 2020 Summary This chapter describes the carbon based materials, their potential applications through photo‐catalytic process using visible light irradiation. The reaction mechanisms were also proposed. Carbon‐based materials can be applied for the various fields in the environment‐ such as pollutant degradation, heavy metal elimination, hydrogen (H2) generation, and CO2 reduction. Regarding the 2D carbon materials, most large‐scale photo‐catalytic applications mentioned in the bibliography is based on the use of carbon‐based materials. However, many efforts have been consecrated for the utilization of carbon materials as electron donors coupling or modified with transition metals or others materials used as hetero‐systems to improve their reactivity under visible light irradiation. The present chapter supplied an overview on the 2D carbon nanostructured materials to improve their catalytic performance as photo‐catalyst…
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Structural characterization, antioxidant, and antibiofilm activities of Coffea canephora green seeds

Publication Scientifique
M. AISSAOUI, M. RAHMOUN, H. LATRACHE, S. BAREK, A. ELASSRI, C. BENSOUICI, A-I. EL HACI, N. CHOUKCHOU-BRAHAM, Published online: 03 Aug 2020 Journal of Complementary and Integrative Medicine | Ahead of Print Abstract Objectives In order to explore Coffea canephora green seeds as natural extract for application in the functional-food industry, we focused this study to the evaluation of the antioxidant and the antiadhesion effect of C. canephora green seeds extracts. Methods The analysis of C. canephora green seeds extracts was carried out by RP-HPLC-PDA. These extracts were screened for antioxidant activities by ABTS and phenanthroline assays. The antibacterial activity was determined by microdilution method against three reference bacteria. The inhibition of bacterial adhesion at 1/8 MIC was carried out against three reference bacteria. Results The RP-HPLC-PDA revealed the presence of gallic acid, vanillin, quercetin, chlorogenic acid, and P-coumaric…
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Determination of trace elements Fe, cu and Zn in the Algerian cancerous plasma using X‐ray fluorescence (XRF)

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L. LahmarM.E.A. BenamarM.A. MelziC.H. MelkaouY. Mabdoua First published: 14 November 2019 Abstract Cancers are among the leading causes of morbidity and mortality in the world. The purpose of this study was to conduct a survey on the effect of minerals on cancer risk in the Algerian population. One hundred and seventy‐eight plasma samples were used to analyze the concentrations of iron (Fe), copper (Cu), and zinc (Zn) in cancerous patients and also in healthy subjects using the X‐ray florescence technique (XRF). Samples were classified according to the age and gender of the donors. An empirical formula was developed for the concentration of Zinc, Copper and Iron in cancer patients according to the age. The averages iron, copper and zinc concentrations in mg/kg for control and Cancer disease groups were (1493 ± 105;…
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Chemical Characterization of Marine Aerosols in a South Mediterranean Coastal Area Located in Bou Ismaïl, Algeria

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Sidali Khedidji1,2, Konrad Müller3, Lyes Rabhi2,4, Gerald Spindler3, Khanneh Wadinga Fomba3, Dominik van Pinxteren3, Noureddine Yassaa  2,5,6, Hartmut Herrmann  3 1 Departments of Chemistry, University of Akli Mohand Oulhadj, Bouira 10000, Algeria2 Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32 El-Alia Bab-Ezzouar, 16111 Algiers, Algeria3 Atmospheric Chemistry Department (ACD), Leibniz Institute for Tropospheric Research (TROPOS), Permoserstraße 15, 04318 Leipzig, Germany4 Unité de Recherche en Analyses et Développement Technologiques en Environnement-Centre de Recherche Scientifique et Technique en Analyses Physico-chimiques UR-ADTE- CRAPC, BP 384, Zone industrielle RP, 42004 Bou Ismail, Tipaza, Algérie5 Centre de Développement des Energies Renouvelables (CDER), BP 62, Route de l’Observatoire, Bouzaréah, Algiers, Algeria6 Commissariat aux Energies Renouvelables et à l’Efficacité Energétique, CEREFE, 12 Rue Docteur Saâdane, Algiers, Algeria Received: December 24, 2019Revised: July 3, 2020Accepted: July 26, 2020 ABSTRACT Daily concentrations of inorganic and…
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Antimalarial-agent artemisinin and derivatives portray more potent binding to Lys353 and Lys31-binding hotspots of SARS-CoV-2 spike protein than hydroxychloroquine: potential repurposing of artenimol for COVID-19

Publication Scientifique
-  M. SEHAILIA ,S. CHEMAT  Research Centre in Physical and Chemical Analysis (C.R.A.P.C), Tipaza, Algeria  Received 21 Apr 2020, Accepted 06 Jul 2020, Published online: 22 Jul 2020JournalJournal of Biomolecular Structure and Dynamics Abstract Medicinal herbs have proved along history to be a source of multiple cures. In this paper, we demonstrate how hydroxychloroquine can act as a good inhibitor of SARS-CoV-2 Spike protein receptor-binding-domain using molecular docking studies. We also unveil how hydroxychloroquine can interfere in the prevention of Lys353 in hACE2 from interacting with the corresponding binding hotspot present on the Spike protein. Further screening of artemisinin & derived compounds produced better Vina docking score than hydroxychloroquine (-7.1 kcal mol−1 for artelinic acid vs. −5.5 kcal mol−1 for hydroxychloroquine). Artesunate, artemisinin and artenimol, showed two mode of interactions with Lys353 and Lys31 binding…
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