scholarly journals Physicochemical and isotopical characterization of groundwater in the basin of Guelma, North-East of Algeria

2019 ◽  
Vol 42 (1) ◽  
pp. 33-41 ◽  
Author(s):  
Kaddour Benmarce ◽  
Kamel Khanchoul
Keyword(s):  
Physicochemical Characterization ◽  
High Water ◽  
Total Alkalinity ◽  
North East ◽  
Groundwater Aquifers ◽  
Calcium Bicarbonate ◽  
Carbonate Formations

Abstract Water quality is an important criterion for evaluating the suitability of water for drinking and domestic purpose. The main objective of this study was to investigate the physicochemical characterization of groundwater for drinking water consumption. Ten captured sources were selected from three aquifers including the Guelma Mio-Plio-Quaternary alluvial basin; the Senonian Heliopolis Neritic limestone aquifer, and the Eocene limestones of Ras El Agba-Sellaoua aquifer. The analyses concerned the periods of high water in May 2017 and low water in August 2017. Twelve parameters were determined for the water samples: pH, T (°C), EC, Ca2+, Mg2+, Na+, K+, Cl−, HCO3−, SO42−, NO3−, TH (hydrotimetric degree), TAT (total alkalinity titration). The interpretation of the various analytical results allowed the determination of the chemical facies and the classification of the groundwater aquifers as follows: (i) in the alluvial layer, the gypsiferous marl substratum and the clays of the three terraces (high, medium and low) have given the water a chlorinated calcium chemical facies in the east part of the study area and travertines feeding partly alluvial layer, and have given a bicarbonated calcium water facies in the west, (ii) in the Senonian of Heliopolis limestone and Eocene carbonate formations of Ras El Agba-Sellaoua, the chemical facies are calcium bicarbonate. Water isotopes (δ18O and δD) helped to determine the origin of groundwater. Overall, the groundwater in the area is hard and has significant to excessive mineralization. It is progressively degraded in the direction of flow, especially in the Guelma alluvial aquifer.

scholarly journals Physicochemical Characterization of the Quality of Groundwater: Case Study of the Tebessa Plain (North-East Algeria)

2021 ◽  
Vol 31 (3) ◽  
pp. 18-36
Author(s):  
Lassaad Ghrieb ◽  
Ammar Maoui ◽  
Essia Boudjebieur ◽  
Yacine Gueroui
Keyword(s):  
Physicochemical Characterization ◽  
Statistical Tool ◽  
Study Region ◽  
North East ◽  
Calcium Magnesium ◽  
Semi Arid Region ◽  
Carbonate Formations ◽  
The Impact

Abstract In order to characterize the physicochemical quality of groundwater, and to examine the behavior of factors influencing water chemism in the Tebessa Plain, which is part of a semi-arid region located in the northeast of Algeria, physicochemical analyses were carried out on 32 water samples from the Mio-Plio quaternary water table. In the east of the study region, in the Djebissa area, most of the Triassic formations form a depression made up of masses of gypsiferous clay, where some outcrops of Triassic dolomites appear together with several blocks of carbonate rocks, torn off during the Aptian- Albian age. In the center and to the west of the plain, carbonate formations are represented by a significant layer of limestone marl and marl from the Cretaceous to Tertiary periods. The results obtained showed that the quality of the water is influenced by the heterogeneity of the geological formations. The concentrations of chlorides, sulphates, and sodium are high in the eastern part of the study area, which can be explained by the impact of gypsum formations, confirmed by the Sr2+/Ca2+ ratio being greater than 3 ‰ for the majority of samples. In the wells of the Tebessa and Ain Chabro areas, the concentrations of calcium, magnesium, and bicarbonates increase due to the predominance of carbonate formations of borders. The use of the statistical tool confirmed the evaporitic origin of the anions, especially in the east of the study region.

Characterization of Ornamental Stones Wastes for Use in Ceramic Materials

2019 ◽  
Vol 958 ◽  
pp. 129-134 ◽  
Author(s):  
Monica Castoldi Borlini Gadioli ◽  
Victor Moza Ponciano ◽  
Bárbara da Hora Rocha Bessa ◽  
Jefferson Luiz Camargo ◽  
Pedro Porto Pizeta
Keyword(s):  
Morphological Analysis ◽  
Ceramic Materials ◽  
Environmental Classification ◽  
Ornamental Stones ◽  
Conventional Technology ◽  
Alkaline Oxides ◽  
Red Ceramics

Ornamental stones processing produces large amounts of wastes, which without treatment, are disposed in deposits, constituting the major environmental problem in this sector in Brazil. There is a great variety of rocks and different technologies in the ornamental stones processing. Rock block sawing can be performed using multi-blade gangsaw, the conventional technology, or multiwire gangsaw, latest technology which uses only diamond wire and water to cut blocks. In recent years there has been a great change in the use of ornamental stones sawing technologies, where currently almost 50% of the sawed materials are processed by the multi wire technology. The ornamental stones wastes have compounds that can collaborate in the processing of the ceramic. Due to the great variety of Brazilian ornamental stones and technologies in addition to the growth of de sector in recent years, there is a need for new studies regard to the characterization and environmental classification of waste, for a better management and application. Therefore, the objective of this work was the characterization and environmental classification of ornamental stones wastes aiming their use in red ceramics. The wastes were characterized with the determination of its chemical composition and mineralogical analysis, particle size, morphological analysis and environmental, the latter by means of the leaching and solubilization tests, for subsequent classification. The wastes are composed mainly of SiO2, Al2O3, alkaline oxides, earth alkaline oxides and iron, and those which were submitted to the leaching and solubilization tests are classified as non-inert.

scholarly journals Chemical and Physicochemical Characterization of Faveleria (Cnidoscolus phyllacanthus) Oil - It Use of Determination of Enzymatic Activity of Extract of Fungi rhizopus sp.

2020 ◽  
Vol 12 (5) ◽  
pp. 1319-1333
Author(s):  
Carla Verônica Rodarte de Moura ◽  
Haroldo Luis Sousa Neres ◽  
Edmilson Miranda de Moura ◽  
Maria Christina Sanches Muratori ◽  
Tiago Linus Silva Coelho ◽  
...  
Keyword(s):  
Enzymatic Activity ◽  
Physicochemical Characterization ◽  
It Use ◽  
Rhizopus Sp

Determination of inorganic constituents and physicochemical characterization of functional flour samples

2017 ◽  
Vol 132 ◽  
pp. 112-118 ◽  
Author(s):  
Anna Luiza B. Brito ◽  
Aline F. Oliveira ◽  
Ana Rita A. Nogueira ◽  
Amália G.G. Pessoa ◽  
Liliana F.B.L. Pontes
Keyword(s):  
Physicochemical Characterization ◽  
Inorganic Constituents

Physicochemical Characterization of Canola Oil/Water Nano‐emulsions Obtained by Determination of Required HLB Number and Emulsion Phase Inversion Methods

2006 ◽  
Vol 27 (1) ◽  
pp. 109-115 ◽  
Author(s):  
Jacqueline Moreira de Morais ◽  
Orlando David Henrique dos Santos ◽  
Tatiani Delicato ◽  
Ricardo Azzini Gonçalves ◽  
Pedro Alves da Rocha‐Filho
Keyword(s):  
Canola Oil ◽  
Phase Inversion ◽  
Physicochemical Characterization ◽  
Emulsion Phase ◽  
Inversion Methods ◽  
Oil Water

scholarly journals Identification and Physicochemical Characterization of a New Allergen from Ascaris lumbricoides

2020 ◽  
Vol 21 (24) ◽  
pp. 9761
Author(s):  
Velky Ahumada ◽  
María Manotas ◽  
Josefina Zakzuk ◽  
Lorenz Aglas ◽  
Sandra Coronado ◽  
...  
Keyword(s):  
Ascaris Lumbricoides ◽  
Immunoglobulin E ◽  
Physicochemical Characterization ◽  
Allergic Diseases ◽  
Specific Ige ◽  
Allergenic Activity ◽  
The Impact ◽  
Helical Folding

To analyze the impact of Ascaris lumbricoides infection on the pathogenesis and diagnosis of allergic diseases, new allergens should be identified. We report the identification of a new Ascaris lumbricoides allergen, Asc l 5. The aim of this study was to evaluate the physicochemical and immunological features of the Asc l 5 allergen. We constructed an A. lumbricoides cDNA library and Asc l 5 was identified by immunoscreening. After purification, rAsc l 5 was physicochemically characterized. Evaluation of its allergenic activity included determination of Immunoglobulin E (IgE) binding frequency (in two populations: 254 children and 298 all-age subjects), CD203c based-basophil activation tests (BAT) and a passive cutaneous anaphylaxis (PCA) mouse model. We found by amino acid sequence analysis that Asc l 5 belongs to the SXP/RAL-2 protein family of nematodes. rAsc l 5 is a monomeric protein with an alpha-helical folding. IgE sensitization to rAsc l 5 was around 52% in general population; positive BAT rate was 60%. rAsc l 5 induced specific IgE production in mice and a positive PCA reaction. These results show that Asc l 5 has structural and immunological characteristics to be considered as a new allergen from A. lumbricoides.

Determination of the Stability of Asphaltenes Through Physicochemical Characterization of Asphaltenes

2016 ◽  
Author(s):  
Andreas Prakoso ◽  
Abhishek Punase ◽  
Kristina Klock ◽  
Estrella Rogel ◽  
Cesar Ovalles ◽  
...  
Keyword(s):  
Physicochemical Characterization ◽  
The Stability

scholarly journals Structure-Retention Relationships and Physicochemical Characterization of Solutes in Thin-Layer Chromatography

1998 ◽  
Vol 81 (6) ◽  
pp. 1105-1108 ◽  
Author(s):  
Tibor Cserháti ◽  
Esther Forgács
Keyword(s):  
Thin Layer ◽  
Thin Layer Chromatography ◽  
Physicochemical Characterization ◽  
Quantitative Relationship ◽  
Experimental Methods ◽  
Reversed Phase ◽  
Structure Retention ◽  
Layer Chromatography

Abstract This review enumerates and critically evaluates experimental methods and calculation procedures used to elucidate the molecular basis of thin-layer chromatography (TLC) separations in both adsorption and reversed-phase modes. It addresses the quantitative relationship between molecular structure and retention and the determination of the solute physicochemical parameters by TLC.

Sign in / Sign up

Export Citation Format

Share Document