Biological & Environmental Sciences: المرسلات الحديثة
السجلات المعروضة 381 -- 400 من 939
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Removal of pesticides from water and wastewater: Chemical, physical and biological treatment approaches
( Elsevier B.V. , 2020 , Article)The levels of pesticides in water have increased due to their excessive use in the modern agricultural domain. Choosing a suitable water treatment method for pesticide removal depends on the type of pesticide and the ... -
Activation of kaolin with minimum solvent consumption by microwave heating
( Mineralogical Society , 2014 , Article)A kaolin clay was activated with 1.0 M H2SO4 solution at minimum liquid to solid ratio (L/S) using microwave heating. The optimum experimental conditions for activation were L/S ratio 3.0 mL 1 M H2SO4 per gram kaolin, ... -
Selective removal of dibenzothiophene from commercial diesel using manganese dioxide-modified activated carbon: A kinetic study
( Taylor and Francis Ltd. , 2015 , Article)With a total concentration of 7055 mgS/kgfuel, the content of organosulphur compounds (OSCs) in local diesel is 20 times higher than the regulated value. Analysis revealed that 30% of OSC is originated from dibenzothiophene ... -
Kinetics and thermodynamics of enhanced adsorption of the dye AR 18 using activated carbons prepared from walnut and poplar woods
( Elsevier , 2015 , Article)Activated carbons prepared from walnut and poplar woods are used as economical adsorbents for the rapid removal and fast adsorption of Acid Red 18 dye from the aqueous solutions; the kinetics, isotherm and thermodynamics ... -
Source identification of beached oil at Al Zubarah, Northwestern Qatar
( Elsevier B.V. , 2017 , Article)The Gulf was contaminated with a large quantity of crude oil during the Gulf War in 1991. Some of the oil beached on the shorelines of the Northwest coast of Qatar. It was discovered, during a sampling campaign in 2015, ... -
Energy efficiency of direct contact membrane distillation
( Elsevier B.V. , 2018 , Article)Membrane distillation (MD) is a promising technology due to its ability to function using low temperature differences and low-quality heat sources, thus allowing it to operate on solar or waste heat. The flux and energy ... -
A novel desulfurization practice based on diesel acidification prior to activated carbon adsorption
( Springer New York LLC , 2015 , Article)Commercial diesel is often rich with organosulfur compounds and a value of 7,100 mgS/kg was recently reported. As confirmed by chromatographic analysis, about 36% of sulfur compounds are originated from dibenzothiophene. ... -
Metal distribution in marine sediment along the Doha Bay, Qatar
( Kluwer Academic Publishers , 2015 , Article)Concentrations of 25 heavy metals (Ag, Al, As, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, Pb, Sb, Se, Sr, V, Zn and Hg) in surface sediments along the Doha Bay from 10 transects each with five stations were ... -
Influence of diesel acidification on dibenzothiophene removal: A new desulfurization practice
( Elsevier , 2015 , Article)Commercial diesel is often loaded with organosulphur compounds including hard-to-remove dibenzothiophene DBT and other derivatives. Following uncommon and simple procedure, dibenzothiophene was selectively removed upon ... -
Insights into the remediation characterization of modified bentonite in minimizing organosulphur compounds from diesel fuel
( Korean Society of Industrial Engineering Chemistry , 2015 , Article)In this work, physical and chemical characteristics of the raw, treated, and acid activated bentonite were investigated using XRD, FTIR, scanning electron microscopy (SEM), and differential thermal analysis (DTA)/thermogravimetry ... -
Effective removal of phenol from wastewater using a hybrid process of graphene oxide adsorption and UV-irradiation
( Elsevier B.V. , 2022 , Article)The focus of this work is the removal of phenol from water by graphene oxide (GO) nanoparticles, prepared by two different methods, through a hybrid adsorption?UV-irradiation process. The GO1 and GO2 were prepared using ... -
Material flow analysis of plastic waste in the gulf co-operation countries (GCC) and the Arabian gulf: Focusing on Qatar
( Elsevier B.V. , 2022 , Article)Global plastic waste production has increased dramatically in recent years, both globally and regionally, having a multitude of adverse effects on the environment and human health. However, little attention has been directed ... -
Thermodynamics, isotherms, and mechanisms studies of lithium recovery from seawater desalination reverse osmosis brine using roasted and ferrocyanide modified date pits
( Elsevier B.V. , 2022 , Article)In this study, the adsorption isotherms and thermodynamic studies of lithium ions from seawater reverse osmosis (SWRO) desalination brine were investigated. Three adsorbents were utilized namely, roasted date pits (RDP), ... -
Copolyamide-clay nanotube polymer composite nanofiber membranes: Preparation, characterization and its asymmetric wettability driven oil/water emulsion separation towards sewage remediation
( MDPI , 2021 , Article)To address the problem of ever-increasing oily wastewater management, due to its directional liquid transport property, membranes with asymmetric wettability can be effectively used for emulsion separation. This study ... -
Insight into the extraction and characterization of cellulose nanocrystals from date pits
( Elsevier B.V. , 2022 , Article)This study aims to extract and characterize cellulose nanocrystals (CNCs) from date pits (DP), an agricultural solid waste. Two methods were used and optimized for the cellulose nanocrystals (CNCs) extraction, namely the ... -
Insights into the removal of lithium and molybdenum from groundwater by adsorption onto activated carbon, bentonite, roasted date pits, and modified-roasted date pits
( Elsevier Ltd , 2022 , Article)This study investigated the removal of lithium (Li) and molybdenum (Mo) from groundwater using activated carbon, bentonite, roasted date pits, and modified-roasted date pits as adsorbents under different experimental ... -
Spectral and Structural Properties of High-Quality Reduced Graphene Oxide Produced via a Simple Approach Using Tetraethylenepentamine
( MDPI , 2022 , Article)A simple temperature-assisted solution interaction technique was used to functionalize and reduce graphene oxide (GO) using tetraethylenepentamine (TEPA) with less chemicals, low temperature, and without using other reducing ... -
Functionalized cellulose nanocrystals as a novel adsorption material for removal of boron from water
( Elsevier Ltd , 2021 , Article)This study aims to prepare a novel adsorbent containing cellulose nanocrystals (CNC) isolated from date pits (DP) and ionic liquid (IL). The prepared composite of CNC and IL was then loaded onto the DP to prepare IL-CNC@DP ... -
Recent advances in the treatment of PAHs in the environment: Application of nanomaterial-based technologies
( Elsevier B.V. , 2022 , Article)Polycyclic aromatic hydrocarbons (PAHs) are one of the most frequent petroleum hydrocarbons detected in the environment. PAHs are receiving global attention due to their toxicity, environmental persistence, and potential ... -
Sustainable and long-term management of municipal solid waste: A review
( Elsevier Ltd , 2022 , Article)This study investigates landfill and incineration waste management strategies as potential and prevalent traditional methods of disposing of municipality-generated waste because of their cheapness and simplicity but requires ...
