Browsing Environmental Science by Title
Now showing items 86-105 of 126
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On the effect of fumed silica particles on the structure, properties and application of PVDF membranes
(Elsevier, 2017-10)This study explored the impact of hydrophobic fumed silica (FS) particles as an inorganic additive in the preparation of polyvinylidenefluoride (PVDF) membranes using the phase inversion technique. PVDF membranes were ... -
On the mechanism of the unwanted acetylation of polysaccharides by 1,3-dialkylimidazolium acetate ionic liquids: part 1—analysis, acetylating agent, influence of water, and mechanistic considerations
(Springer, 2015-09)The acetylating action of ionic liquids frequently used in biomass and polysaccharide processing, namely 1,3-dialkylimidazolium acetates, on cellulose has been studied. Analysis was based on an accurate method to quantify ... -
On the mechanism of the unwanted acetylation of polysaccharides by 1,3-dialkylimidazolium acetate ionic liquids: part 2—the impact of lignin on the kinetics of cellulose acetylation
(Springer, 2017-10)Cellulose acetylation has been reported as a side reaction of cellulose treatment with the ionic liquid 1-ethyl-3-methylimidazolium acetate ([EMIm][OAc]) (Karatzos et al. in Cellulose 19:307–312, 2012) and other ... -
On the para/ortho reactivity of isocyanate groups during the carbamation of cellulose nanocrystals using 2, 4-toluene diisocyanate
(Multidisciplinary Digital Publishing Institute, 2019-09)2,4-toluene diisocyanate (TDI) has been commonly used to bind molecules and polymers onto the surface of cellulose nanocrystals (CNCs). Such a process usually involves two steps: (1) the more reactive para-isocyanates ... -
On the prevalence of side reactions during ionosolv pulping of Norway spruce with 1-butyl-3-methylimidazolium acesulfamate
(Springer Netherlands, 2014-12)We report on the low efficiency of 1-butyl-3-methylimidazolium acesulfamate ([BMIM]Ace) at delignifying Norway spruce. A systematic kinetic and structural study of [BMIM]Ace pulping of spruce wood at 120 °C allowed shedding ... -
Parametric finite element analysis to investigate flexural behavior of BFRP-FRC beams
(2022-04)Recently, most of researchers are focusing on the use of ecofriendly and natural fibers for reinforcement in concrete. One of the most recent materials that is being used is Basalt fiber due to its low cost and exceptional ... -
Pathogenic Microorganisms in University Offices Detection and Designing a Sustainable Organic Treatment
(Blue Eyes Intelligence Engineering and Sciences Publication, 2019-09)People in developed countries spend approximately 90% of their lives indoors, yet little is known about the source and diversity of microbes in built environments and pathogens are spreading everywhere especially in the ... -
Photocatalytic hollow fiber membranes for the degradation of pharmaceutical compounds in wastewater
(Elsevier, 2017-10)In this research, the degradation by heterogeneous photocatalysis of organic pharmaceutical waste compounds using TiO2 nanoparticles immobilized on polymeric commercial hollow fiber (HF) ultrafiltration membranes was ... -
Polydopamine-coated graphene oxide nanosheets embedded in sulfonated poly (ether sulfone) hybrid UF membranes with superior antifouling properties for water treatment
(Elsevier, 2022-04)A novel high-performance hybrid ultrafiltration (UF) membrane was fabricated by blending polydopamine-coated graphene oxide (PDGO) nanosheets with sulfonated poly(ether sulfone) (SPES) via phase inversion method and tested ... -
Polydopamine-coated graphene oxide nanosheets embedded in sulfonated poly(ether sulfone) hybrid UF membranes with superior antifouling properties for water treatment
(Elsevier, 2022-04)A novel high-performance hybrid ultrafiltration (UF) membrane was fabricated by blending polydopamine-coated graphene oxide (PDGO) nanosheets with sulfonated poly(ether sulfone) (SPES) via phase inversion method and tested ... -
Preparation and characterization of electrospun PLA/nanocrystalline cellulose‐based composites
(Wiley & Sons, 2013-12)Biodegradable nanocomposites of Nanocrystalline Cellulose (NCC) and electrospun poly-(lactic acid) were prepared via a new mixing technique. Dispersion of hydrophilic NCC in hydrophobic PLA was improved through aqueous ... -
PVDF/magnetite blend membranes for enhanced flux and salt rejection in membrane distillation
(Elsevier, 2018-06)This study reports on the enhancement of direct contact membrane distillation (DCMD) performance by incorporating magnetite nanoparticles (NP) in polyvinylidene fluoride (PVDF) membranes to render the membrane bulk hydrophilic ... -
Quantifying the changes of soil surface microroughness due to rainfall impact on a smooth surface
(Copernicus Publications, 2017)This study examines the rainfall-induced change in soil microroughness of a bare smooth soil surface in an agricultural field. The majority of soil microroughness studies have focused on surface roughness on the order ... -
Radiology exposure and control in UAE
(ABJNA, 2017)Radiation is part of the earth’s natural process. Natural radiation occurs on a daily basis in different ways and through different mediums. Artificial radiation also occurs in different ways. This study acknowledges that ... -
Recent developments in hazardous pollutants removal from wastewater and water reuse within a circular economy
(Nature Publishing Group, 2022-04)Recent advances in wastewater treatment processes have resulted in high removal efficiencies for various hazardous pollutants. Nevertheless, some technologies are more suitable for targeting specific contaminants than ... -
Reversing membrane wetting in membrane distillation: comparing dryout to backwashing with pressurized air
(Royal Society of Chemistry, 2017)The critical failure mode for membrane distillation (MD) desalination is wetting through the pores of the hydrophobic membrane, which allows the saline solution to leak through and contaminate the permeate. The standard ... -
Review of Environmental and Human Exposure to Persistent Organic Pollutants
(Canadian Center of Science and Education, 2013-08-30)Persistent Organic Pollutants (POPs) have a very long life and they persist in the environment for a very long time and have a long life in soils, sediments, air or biota. There has been a recent upsurge of interest in the ... -
A review of the accumulation and distribution of persistent organic pollutants in the environment
(IACSIT Press, 2013-11)Persistent Organic Pollutants (POPs) have a long life in soils, sediments, air or biota. There has been a recent upsurge of interest in the development of low cost reliable measures which are required in order to detect ... -
A review of the surface modification of cellulose and nanocellulose using aliphatic and aromatic mono-and di-isocyanates
(Multidisciplinary Digital Publishing Institute, 2019-01)Nanocellulose has been subjected to a wide range of chemical modifications towards increasing its potential in certain fields of interest. These modifications either modulated the chemistry of the nanocellulose itself or ... -
A review on the partial and complete dissolution and fractionation of wood and lignocelluloses using imidazolium ionic liquids
(Multidisciplinary Digital Publishing Institute, 2020-01)Ionic liquids have shown great potential in the last two decades as solvents, catalysts, reaction media, additives, lubricants, and in many applications such as electrochemical systems, hydrometallurgy, chromatography, CO2 ...