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Implication of sewage sludge increased application rates on soil fertility and heavy metals contamination risk

Emerging Contaminants 2023年第1期9卷 41-52页

作者： Abdelmajid Achkir Abdelhakim Aouragh Mohammed el Mahi el mostapha lotfi Najoua Labjar Mohammed el Bouch Moulay Lahcen Ouahidi Taruvinga Badza Hamid Farhane Tawfik el Moussaoui Laboratory of Spectroscopy Molecular ModellingMaterialsNanomaterialsWater and EnvironmentCERN2DENSAMMohammed V University in Rabat10100Morocco National Laboratory for Studies and Pollution Monitoring-Ministry of Energy Mines and EnvironmentDepartment of EnvironmentRabatMorocco School of Agricultural Earth and Environmental SciencesUniversity of KwaZulu-NatalPrivate Bag X01ScottsvillePietermaritzburg3209South Africa Team of Anthropogenetic Sciences and Biotechnologies Faculty of SciencesChouaib Doukkali UniversityEl Jadida24000Morocco Resources Valorization Environment and Sustainable Development Research Team(RVESD)Department of MinesMines School of RabatAve Hadj Ahmed CherkaouiBP 753AgdalRabat53000Morocco

This paper aims to assess soil fertility and risk contamination parameters in response to increased amendment rates of sewage sludge application,under semi-arid climatic conditions of Morocco,using two soil textures:soil A(clay-silty)and soil B(sandy-clay)over two *** this end,sewage sludge and soils treatments physicochemical parameters,heavy metals content,degree of pollution and associated risks were evaluated and compared to controlled *** results showed that all studied parameters changed significantly(pPb>Zn>Ni>Cd>***,their concentrations were below the critical values established by the European Union for the agronomic use of *** obtained results of assessed parameters indicating SS degree of pollution and associated risks showed a low to a moderate contamination risks of heavy ***,environmental risks of sewage sludge application will be related to increase of heavy metals mainly in a long-term agricultural ***,optimal management of sewage sludge application is recommended to ensure sustainability and benefits at the same time to master the contamination risks.

关键词： Sewage sludge Soil Land application Fertility Heavy metals Risk assessment

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Valorization of a Good Bioceramic from Moroccan Waste Fish Bone by a Heat Treatment Method

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Journal of Renewable Materials 2019年第1期7卷 1-7页

作者： Kaoutar Kara Fatiha Ouanji el mostapha lotfi Mohammed el Mahi Mohamed Kacimi Laboratory of Spectroscopy Molecular ModelingMaterialsNanomaterialsWater and EnvironmentEnvironmental Materials TeamENSETMohammed V UniversityRabatMorocco Laboratory of Nanomaterial Nanotechnology and EnvironmentPhysico-chemical of Material and Catalysis(URAC26)Faculty of SciencesUniversity of Mohammed VRabat.Morocco

A tricalcium phosphate(TCP)material was produced from sardine and mackerel waste using a heat treatment method after a Soxhlet extraction to obtain the non-soluble portion of fish *** bones were annealed at temperatures between 400℃ and 1200℃.The thermal analysis(TG-DTA)was carried out to investigate the thermal stability of TCP and to confirm the removal of organic matter from the raw *** calcined bones were characterized by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),and field emission scanning electron microscopy(FESEM).The calcium to phosphorous weight ratio was determined by ***-IR and XRD confirmed the similarities to syntheticβ-TCP(JCPDS-09-169),FE-SEM results revealed the formation of nanostructured *** results suggest that varying the isolation temperature between 600-1200℃ has tremendous impact on the production of TCP from fish bone waste with the required properties.

关键词： Hydroxyapatite tri-calcium phosphate fish bone heat treatement bioceramic

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Proposition and design of a new Micro-Architected Domes family:A biomimicry-based approach

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Frontiers of Architectural Research 2024年第3期13卷 650-667页

作者： Nadir Rihani Iatimad Akhrif mostapha el Jai Euromed Polytechnic School Euromed Center of ResearchEuromed University of FesFesMorocco Mechanic Mechatronic and Command LaboratoryENSAM-MeknesMoulay Ismail UniversityMeknesMorocco

In the last decade,micro-architected structures have gained significant attention in academia and industry for their lightweight,strong,and thermally efficient *** by biomimicry design,this paper presents a novel ribbed family of additively manufactured Micro-Architected Domes(MAD).The design incorporates tetrapod pyramid unit cells,golden ratio-based fractal patterns,Schoen’s Minimal Gyroid,and spherical *** study focuses on dome radius,height,and azimuth/elevation partitioning as input variables,with the main output being ribbed micro-cell *** relationships between unit-cells’diameter and input variables were established through problem-solving and numerical computations:linear dependency with the dome radius and hyperbolic dependency with the azimuth and elevation *** proposed design successfully adhered to the Surface-to-Volume ratio of Schoen’s Minimal Gyroid,achieving an average volume relative density of 2.5%,confirming its lightweight *** feasibility of the design was further supported by fabricating three specimens using Filament Fused *** research showcases the potential of biomimicry-inspired micro-architected structures,paving the way for innovative applications in various fields.

关键词： Micro-architected structures Domes Biomimicry Mathematical design Optimization Fractal decomposition

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Ferroelectric solid solution Li1-xTa1-xWxO3 as potential photocatalysts in microbial fuel cells:Effect of the W content

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Chinese Journal of Chemical Engineering 2018年第9期26卷 1985-1991页

作者： Abdellah Benzaouak Nour-Eddine Touach V.M.Ortiz-Martinez M.J.Salar-Garcia F.Hernandez-Fernandez A.P.de los Rios Mohammed el Mahi el mostapha lotfi Laboratory of Mechanics and Industrial Processes Chemical Sciences Research TeamENSETMohammed V University in RabatMorocco Department of Chemical and Environmental Engineering Technical University of CartogenaCampus Muralla Del Mar MurdaSpain

Microbial fuel cells(MFCs)are bio-electrochemical systems that can directly convert the chemical energy contained in an effluent into bioelectricity by the action of *** performance of these devices is heavily impacted by the choice of the material that forms the *** work focuses on the assessment of ferroelectric and photocatalytic materials as a new class of non-precious catalysts for MFC cathode construction.A series of cathodes based on mixed oxide solid solution of LiTaO_3with WO_3formulated as Li_(1-x)Ta_(1-x)W_xO_3(x=0,0.10,0.20 and0.25),were prepared and investigated in *** catalyst phases were synthesized,identified and characterized by DRX,PSD,MET and UV–Vis absorption *** cathodes were tested as photoelectrocatalysts in the presence and in the absence of visible light in devices fed with industrial *** results revealed that the catalytic activity of the cathodes strongly depends on the ratio of substitution of W^(6+)in the LiTaO_*** maximum power densities generated by the MFC working with this series of cathodes increased from60.45 mW·m^(-3)for x=0.00(LiTaO_3)to 107.2 mW·m^(-3)for x=0.10,showing that insertion of W^(6+)in the tantalate matrix can improve the photocatalytic activity of this ***,MFCs operating under optimal conditions were capable of reducing the load of chemical oxygen demand by 79%(COD_(initial)=1030 mg·L^(-1)).

关键词：光催化剂铁电体微生物房间燃料混合氧化物直接变换电气化学

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Influences of nanoparticles and chain length on thermodynamic and electrical behavior of fluorine liquid crystals

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Chinese Physics B 2022年第10期31卷 410-416页

作者： Ines Ben Amor lotfi Saadaoui Abdulaziz N.Alharbi Talal M.Althagafi Taoufik Soltani Université Tunis el Manar Laboratoire de Physique de la Matiére Molle et de la Modélisation Electromagnétique2092 Tunis Physics Department College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia

Hydrogen-bonded polar nematic liquid crystal series with the general formula n OBAF(n = 7-12) is studied. The mesomorphic characterization is demonstrated through differential scanning calorimetry(DSC) and polarized optical microscopy(POM). The complexes with short alkyl chains(n = 7, 8) present a wide nematic range and monotropic smectic F mesophase, whereas the longer alkyl chain(n = 10-12) analogues show high melting and low clearing mesomorphic liquid crystals. The thermal range of the mesophase and the birefringence increase with chain length decreasing. Furthermore, the effect of the nanoparticles(LiNbO_(3)) on the thermal and the electrical behavior of 8OBAF are investigated. The presence of LiNbO_(3) nanoparticles increases the conductivity and reduces the resistivity of the complex.

关键词： fluorine liquid crystal polar nematic ferroelectric nanoparticles thermal stability dielectric behavior

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Evaluation of hypoglycemic and hypolipidemic activities of aqueous extract of Cistus ladaniferus in streptozotocin-induced diabetic rats

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Asian Pacific Journal of Tropical Biomedicine 2016年第12期6卷 1044-1049页

作者： Mohamed el Kabbaoui Alae Chda Ouarda Azdad Najlae Mejrhit lotfi Aarab Rachid Bencheikh Abdelali Tazi Laboratory of Bioactive Molecules Faculty of Sciences and TechniquesSidi Mohamed Ben Abdellah University(USMBA)

Objective:To evaluate the effect of aqueous leaf extract of Cistus ladaniferus(***) on glycemic and lipidemic status in diabetic ***:Overnight fasted rats were injected intraperitoneally with streptozotocin(45 mg/kg) to induce experimental *** aqueous extract of the leaves of *** was administered orally at the dose of 500 mg/kg body weight to diabetic rats for a period of 28 *** effect,body weight,oral glucose tolerance,change in lipid parameters,urea,creatinine,aspartate aminotransferase and alanine aminotransferase levels of diabetic rats treated with aqueous extract were evaluated in experimental ***:Administration of 500 mg/kg of *** extract to diabetic rats for 28 days resulted in a significant reduction in the levels of blood glucose,alanine aminotransferase,aspartate aminotransferase,urea and ***,the extract of *** improved glucose tolerance in diabetic rats,and its antidiabetic effect was similar to the one obtained with *** hypolipidemic effect was demonstrated by an important decrease in plasma total cholesterol,triglycerides and low density lipoprotein-cholesterol ***:It is concluded that *** leaf extract showed an antidiabetic activity in experimental diabetes which was similar to the one obtained with glibenclamide.

关键词： Cistus ladaniferus Diabetes mellitus Streptozotocin Antidiabetic activity Hypolipidemic activity Glucose tolerance

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Hydrogen Detection With FBG Sensor Technology for Disaster Prevention

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Photonic Sensors 2013年第3期3卷 214-223页

作者： Said SAAD lotfi HASSINE Group of electronics and Quantum Physics Laboratory of Advanced Materials and Quantum Phenomena Faculty of Sciences of Tunis 2092 Tunisia National Institute of Applied Sciences and Technology University of Carthage North Urban Center of Tunis-B.P.676 Cedex Tunis-1080 Tunisia

Three fiber Bragg grating (FBG) sensors systems for hydrogen detection are presented using the classic Pd (palladium) coating technique (500 nm) as the hydrogen sensitive film and titanium (Ti) as the adhesive layer with the etched cladding. These systems are compared and used for disaster environment prevention in hydrogen leakage environment where higher values than the normal are presented which increase the risk of explosion. With these systems, 0.1%–4% of the hydrogen volume concentration range in the volume ratio was detected and monitored experimentally in the test room with the very sensitive and stable value which reached 60 pm/1% H2. In addition, a fast response time, about 6 s, was obtained with an advanced sensor.

关键词：传感器技术氢气泄漏氢检测 FBG 光纤布喇格光栅防灾试验室试验涂覆技术

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Intersheet Distance Modeling and Thermal Characterization of New Micro/Nano-Composites Composed by Clay Matrix and PEG 6000 Addition

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Open Journal of Civil Engineering 2016年第4期6卷 577-594页

作者： Iatimad Akhrif mostapha el Jai Laila Mesrar Raouf Jabrane Geosciences and Environment Laboratory Faculty of Sciences and Techniques Sidi Mohammed Ben Abdellah University Fez Morocco Advenced Materials & Applications Research Team Ecole Nationale Supérieure d’ Arts & Métiers de Meknès Moulay Ismail University Meknes Morocco

Nowadays, the energetic efficiency becomes one of the major interests of the global society. Thus, the energetic challenges of the new century enforce the scientific and industrial environment to the development of new efficient materials, which present more than the classical thermal properties, according to the energy storage, energy consumption and other specific needs. In this context, the present work constitutes the third step of the development of a new kind of composite materials (micro-composites and nano-composites), using natural marl (clay) clay and biodegradable polymer, which is the PolyEthylene Glycol 6000 (PEG 6000). This step corresponds to characterization of the variation of the specific heat (denoted Cp) of the materials elaborated. So, in order to estimate the capacity of thermal energy adsorption, we utilized a SHIMATZU-DSC 60 Differential Scanning Calorimeter. The main results present the evolution of the Cp according to the PEG 6000 doping and also the specific melting enthalpy of the polymer within the natural clay matrix;by the way this enthalpy constitutes the specific heat stocked in the materials.

关键词： Kaolinite/Illite Micro and Nanocomposite/Clay Matrix Phase Chage Materials PolyEthylene Glycol 6000 Thermal Analysis DRX Characterization Differential Scanning Calorimetery Transformation Enthalpy Latent Heat

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Correction of the Production Master Plan According to Preventive Maintenance Constraints and Equipments Degradation State

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Engineering（科研） 2014年第6期6卷 274-291页

作者： mostapha el Jai Iatimad Akhrif Brahim Herrou Hussain Benazza Geosciences and Environment Laboratory Faculty of Sciences and Techniques Sidi Mohammed Ben Abdellah University Fez Morocco Industrial Engineering Department Ecole Nationale Supérieure d’Arts et Métiers de Meknès Moulay Ismail University Meknes Morocco Industrial Engineering Department Ecole Nationale Supérieure d’Arts et Métiers de Meknès Moulay Ismail University Meknes Morocco Industrial Techniques Laboratory Faculty of Sciences and Techniques Sidi Mohamed Ben Abdellah University Fez Morocco Industrial Techniques Laboratory Faculty of Sciences and Techniques Sidi Mohamed Ben Abdellah University Fez Morocco

In this paper, we tried to formulate the interdependences of the systematic maintenance policies and the choice of a production master plan. We started from the intuitive relation between the time of production and the degradation state of the equipment to mathematically formulate the problematic and thus to build the objective space function and feasible solution set of this multiobjective problematic. The solutions set could after be presented to the decision maker to choose one, or more of these solutions, in order to manage and control the maintenance and production policies at the same time.

关键词： Production Master Plan Systematic Maintenance MOP (Multiobjective Optimization Problem) Feasible Set Objective Function Space

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Hydrogen FBG Sensor Using Pd/Ag Film With Application in Propulsion System Fuel Tank Model of Aerospace Vehicle

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Photonic Sensors 2014年第3期4卷 254-264页

作者： Said SAAD lotfi HASSINE Vassim elFAHEM Group of electronics and Quantum Physics Laboratory of Advanced Materials and Quantum Phenomena Faculty ofSciences of Tunis 2092 Tunisia National Institute of Applied Sciences and Technology University of Carthage North Urban Center of Tunis-B.P. 676Cedex Tunis 1080 Tunisia Regio iT Gesellschaft mit beschrankter Hafiung Aachen Germany

高效率氢纤维布拉格栅栏(FBG ) 传感器被介绍。敏感电影是钯银(Pd-Ag ) 的一个新联盟。另外，钛(Ti ) 层被用作粘合剂层。介绍传感器显示出超过 60 pm/1% H 的决定 2 , 和 4 s5 s 的一快反应时间在 0.1% H 被保证 2 4% H 2 范围。... 详细信息

高效率氢纤维布拉格栅栏(FBG ) 传感器被介绍。敏感电影是钯银(Pd-Ag ) 的一个新联盟。另外，钛(Ti ) 层被用作粘合剂层。介绍传感器显示出超过 60 pm/1% H 的决定 2 , 和 4 s5 s 的一快反应时间在 0.1% H 被保证 2 4% H 2 范围。而且，传感器的生活时间被调查。获得的结果证明传感器有一提高的生活时间。而且，传感器在太空车辆的推进系统燃料坦克模型被使用。获得的结果显示它由于氢漏是对灾难太空的一个预防系统。

关键词： FBG传感器模型应用氢气泄漏推进系统燃料箱空天飞行器 Ag膜光纤布拉格光栅

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