The Experts below are selected from a list of 38151 Experts worldwide ranked by ideXlab platform
Gérard Le Buzit - One of the best experts on this subject based on the ideXlab platform.
-
Combined process for the treatment of olive oil mill wastewater: absorption on Sawdust and combustion of the impregnated Sawdust.
Bioresource technology, 2010Co-Authors: Ajmia Chouchene, Mejdi Jeguirim, Gwenaëlle Trouvé, Alain Favre-reguillon, Gérard Le BuzitAbstract:Olive oil mill wastewater (OMWW) generated by the olive oil extraction industry constitutes a major pollutant, causing a severe environmental threats because of the high chemical oxygen demand and the high content of polyphenol. This work studied a combined process of absorption on Sawdust, a low-cost renewable absorbents, and an energetic valorisation via combustion was studied. The thermal behaviour of different OMWW/Sawdust blends was studied under inert and oxidative atmosphere from 20 to 900 degrees C using thermogravimetric analysis (TGA). Gaseous emissions such as CO(2), CO and volatile organic compounds (VOCs) were measured under oxidative conditions at 600 degrees C in a fixed-bed reactor. Kinetic parameters were obtained and compared for the different mixtures of OMWW and Sawdust. The absorption of the organic content of OMWW on Sawdust improves the decomposition of cellulosic compounds at low temperatures in both atmospheres. Compared to Sawdust, absorption of the organic content of OMWW on Sawdust favours a combustion process with lower molar ratio of CO/CO(2) in the exhaust. Combustion of an impregnated Sawdust containing 40 wt.% of the organic content of the OMWW generates the same amount of gas in the exhaust as Sawdust. OMWW/Sawdust blends may therefore be a promising biofuel with low environmental impacts.
-
Combined process for the treatment of olive oil mill wastewater: Absorption on Sawdust and combustion of the impregnated Sawdust
Bioresource Technology, 2010Co-Authors: Ajmia Chouchene, Mejdi Jeguirim, Gwenaëlle Trouvé, Alain Favre-reguillon, Gérard Le BuzitAbstract:Abstract Olive oil mill wastewater (OMWW) generated by the olive oil extraction industry constitutes a major pollutant, causing a severe environmental threats because of the high chemical oxygen demand and the high content of polyphenol. This work studied a combined process of absorption on Sawdust, a low-cost renewable absorbents, and an energetic valorisation via combustion was studied. The thermal behaviour of different OMWW/Sawdust blends was studied under inert and oxidative atmosphere from 20 to 900 °C using thermogravimetric analysis (TGA). Gaseous emissions such as CO2, CO and volatile organic compounds (VOCs) were measured under oxidative conditions at 600 °C in a fixed-bed reactor. Kinetic parameters were obtained and compared for the different mixtures of OMWW and Sawdust. The absorption of the organic content of OMWW on Sawdust improves the decomposition of cellulosic compounds at low temperatures in both atmospheres. Compared to Sawdust, absorption of the organic content of OMWW on Sawdust favours a combustion process with lower molar ratio of CO/CO2 in the exhaust. Combustion of an impregnated Sawdust containing 40 wt.% of the organic content of the OMWW generates the same amount of gas in the exhaust as Sawdust. OMWW/Sawdust blends may therefore be a promising biofuel with low environmental impacts.
Zahidul Islam - One of the best experts on this subject based on the ideXlab platform.
-
Evaluation of mechanical properties of both benzoyl peroxide treated and untreated teak Sawdust reinforced high density polyethylene composites
Cellulose, 2018Co-Authors: Taslima Akter, Husna Parvin Nur, Shahin Sultana, Rafiqul Islam, Joynal Abedin, Zahidul IslamAbstract:Natural fiber reinforced polymer composites are extensively used in various applications such as automotive interiors, furniture, packaging and construction materials. In the present work, teak or shegun (Tectona grandis) Sawdust were used as reinforcements in thermoplastics. Sawdust fibers were chemically treated to reduce their moisture absorption. Sawdust pretreated with alkali was then treated with benzoyl peroxide to provide a more hydrophobic surface that would adsorb less water and have better interfacial adhesion. Reaction parameters such as time, temperature, pH and concentration of benzoyl peroxide were used to get the desired change in functional group of cellulose. FT-IR spectroscopic analyses were done and the results showed the evidence of positive reactions. In this work, chemically treated and untreated teak Sawdust reinforced high density polyethylene (HDPE) composites were prepared by compression moulding technique. The effects of this chemical treatment on the physico-mechanical properties of the composites were studied. The effect of fiber content on the physico-mechanical properties of composites were also studied by preparing the composites with different weight fractions (5, 15, 25, 35 and 45%) of Sawdust. Water absorption (%) tests for all composites revealed that there was less water absorption for the treated composites than the untreated ones. Scanning electron microscopy (SEM) images of treated and untreated Sawdust-HDPE composites showed that better interfacial adhesion has occurred between the fiber and the matrix in benzoyl peroxide treated Sawdust-HDPE composites. Mechanical properties (tensile strength, elongation at break and impact strength) were determined and analyzed for all treated and untreated Sawdust-HDPE composites. Improved tensile and impact results of treated Sawdust-HDPE composites indicated that benzoyl peroxide treatment of Sawdust increases the interfacial adhesion between fiber-matrix in the treated Sawdust-HDPE composites.
Miguel De La Guardia - One of the best experts on this subject based on the ideXlab platform.
-
Preparation and characterization of novel microstructure cellulosic Sawdust material: application as potential adsorbent for wastewater treatment
Cellulose, 2020Co-Authors: Salah Benyoucef, Djamila Harrache, Samira Djaroud, Karima Sail, Daniel Gallart-mateu, Miguel De La GuardiaAbstract:The present work investigated the feasibility to develop of a new microstructure of a material from date palm Sawdust in order to improve its adsorption properties. The preparation of the material consists of mechanical grinding of fibers, sieving of Sawdust, extractibles extraction and then pretreatment with activating agent sulfuric acid at 1% and 40%. It was then followed by chemical treatment using urea by grafting reaction. The phases change due to chemical modification on Sawdust particles was examined using Fourier Transform Infrared (FTIR), spectroscopy Scanning Electron Microscopy (SEM), X-ray diffraction analysis (XRD) and BET method. The hydrolysis at 40% has an effect on the increase of the material crystallinity, higher than the hydrolysis at 1%. An increase in the size of crystallites was also observed by XRD measurements. These results were related to the reduction of the amorphous fractions of wood, and, consequently, to the enrichment of the relative crystalline content. Indeed, the degradation of hemicellulose was observed, by FT-IR analysis, for treated samples. The treated Sawdust at 40% acid has the better adsorption characters due to high surface area of 135 m^2/g as compared to 44.4 m^2/g for treated sawdut (1% acid), this is well supported by SEM micrographs wich also suggest has greater number of pores. Based on preliminary satisfactory results, the Sawdust date palm provides a valuable addition to the existing conventional processes to better optimize the adsorption capacity along with low-cost potential application in wastewater treatment.
Kasama Jarukumjorn - One of the best experts on this subject based on the ideXlab platform.
-
Effects of Sawdust Content and Alkali Treatment on Mechanical and Flame Retarding Properties of Sawdust/Recycled High Density Polyethylene Composites
Advanced Materials Research, 2014Co-Authors: Rapisa Jarapanyacheep, Kasama JarukumjornAbstract:Sawdust/recycled high density polyethylene (rHDPE) composites were prepared and their mechanical properties, flammability and morphology were investigated. Sawdust was used at contents of 30, 40 and 50 wt%. With increasing Sawdust content, tensile strength and elongation at break of the composites decreased whereas tensile modulus increased. Flexural properties showed the same trend as tensile properties. Flammability of the composites enhanced with increasing Sawdust content. Mechanical properties of alkali treated Sawdust/rHDPE composites were higher than those of untreated Sawdust/rHDPE composites at all Sawdust contents. Moreover, alkali treatment improved flame retardancy of the composites. SEM micrographs showed that alkali treatment enhanced the interfacial adhesion between Sawdust and rHDPE matrix.
-
effects of Sawdust content and alkali treatment on mechanical and flame retarding properties of Sawdust recycled high density polyethylene composites
Advanced Materials Research, 2014Co-Authors: Rapisa Jarapanyacheep, Kasama JarukumjornAbstract:Sawdust/recycled high density polyethylene (rHDPE) composites were prepared and their mechanical properties, flammability and morphology were investigated. Sawdust was used at contents of 30, 40 and 50 wt%. With increasing Sawdust content, tensile strength and elongation at break of the composites decreased whereas tensile modulus increased. Flexural properties showed the same trend as tensile properties. Flammability of the composites enhanced with increasing Sawdust content. Mechanical properties of alkali treated Sawdust/rHDPE composites were higher than those of untreated Sawdust/rHDPE composites at all Sawdust contents. Moreover, alkali treatment improved flame retardancy of the composites. SEM micrographs showed that alkali treatment enhanced the interfacial adhesion between Sawdust and rHDPE matrix.
Ajmia Chouchene - One of the best experts on this subject based on the ideXlab platform.
-
Combined process for the treatment of olive oil mill wastewater: absorption on Sawdust and combustion of the impregnated Sawdust.
Bioresource technology, 2010Co-Authors: Ajmia Chouchene, Mejdi Jeguirim, Gwenaëlle Trouvé, Alain Favre-reguillon, Gérard Le BuzitAbstract:Olive oil mill wastewater (OMWW) generated by the olive oil extraction industry constitutes a major pollutant, causing a severe environmental threats because of the high chemical oxygen demand and the high content of polyphenol. This work studied a combined process of absorption on Sawdust, a low-cost renewable absorbents, and an energetic valorisation via combustion was studied. The thermal behaviour of different OMWW/Sawdust blends was studied under inert and oxidative atmosphere from 20 to 900 degrees C using thermogravimetric analysis (TGA). Gaseous emissions such as CO(2), CO and volatile organic compounds (VOCs) were measured under oxidative conditions at 600 degrees C in a fixed-bed reactor. Kinetic parameters were obtained and compared for the different mixtures of OMWW and Sawdust. The absorption of the organic content of OMWW on Sawdust improves the decomposition of cellulosic compounds at low temperatures in both atmospheres. Compared to Sawdust, absorption of the organic content of OMWW on Sawdust favours a combustion process with lower molar ratio of CO/CO(2) in the exhaust. Combustion of an impregnated Sawdust containing 40 wt.% of the organic content of the OMWW generates the same amount of gas in the exhaust as Sawdust. OMWW/Sawdust blends may therefore be a promising biofuel with low environmental impacts.
-
Combined process for the treatment of olive oil mill wastewater: Absorption on Sawdust and combustion of the impregnated Sawdust
Bioresource Technology, 2010Co-Authors: Ajmia Chouchene, Mejdi Jeguirim, Gwenaëlle Trouvé, Alain Favre-reguillon, Gérard Le BuzitAbstract:Abstract Olive oil mill wastewater (OMWW) generated by the olive oil extraction industry constitutes a major pollutant, causing a severe environmental threats because of the high chemical oxygen demand and the high content of polyphenol. This work studied a combined process of absorption on Sawdust, a low-cost renewable absorbents, and an energetic valorisation via combustion was studied. The thermal behaviour of different OMWW/Sawdust blends was studied under inert and oxidative atmosphere from 20 to 900 °C using thermogravimetric analysis (TGA). Gaseous emissions such as CO2, CO and volatile organic compounds (VOCs) were measured under oxidative conditions at 600 °C in a fixed-bed reactor. Kinetic parameters were obtained and compared for the different mixtures of OMWW and Sawdust. The absorption of the organic content of OMWW on Sawdust improves the decomposition of cellulosic compounds at low temperatures in both atmospheres. Compared to Sawdust, absorption of the organic content of OMWW on Sawdust favours a combustion process with lower molar ratio of CO/CO2 in the exhaust. Combustion of an impregnated Sawdust containing 40 wt.% of the organic content of the OMWW generates the same amount of gas in the exhaust as Sawdust. OMWW/Sawdust blends may therefore be a promising biofuel with low environmental impacts.
