Displaying 261 - 270 of 515 in CEST2019 (remove filter)
CEST Proceedings are published under the ISSN 2944-9820.
Conversion of coal fly ash by-products into high-grade zeolite by a quasi natural crystallization process
Zgureva D., (Corresponding) Boycheva S.
Topic:
Hazardous waste management
Recently, the synthesis of zeolites from coal fly ash (FA) has been extensively studied regarding the process optimization, industrial upscaling and technological commercialization. The obtaining of fly ash zeolites (FAZ) is based on the transformation of aluminosilicates of FA by alkaline...Read more
Liquid chromatography coupled to high-resolution-Orbitrap mass spectrometry for the determination of nitrofuran metabolites in fish samples
(Corresponding) Trantopoulos E., Kosma C., Karkabounas A., Boti V., Albanis T.
Topic:
Emerging pollutants
Nitrofurans (NFs) are synthetic antibiotic drugs employed for the treatment of bacterial diseases in livestock production or as food additives in industrial farming of food-producing animals. The most widely used NFs in veterinary medicine are nitrofurantoin (NFT), furazolidone (FZD), nitrofurazone...Read more
Keywords:
Nitrofurans,nitrofuran metabolites,fish,aquacultures,UHPLC-LTQ Orbitrap MS
Pharmaceutical residues in hospital and urban wastewaters: Occurrence, removal and potential risk assessment
Martinaiou P., Trantopoulos E., (Corresponding) Kosma C., Albanis T.
Topic:
Emerging pollutants
The presence of ten pharmaceutical compounds (bupropion, venlafaxine, mirtazapine, sertraline, citalopram, caffeine, triclosan, carbamazepine, diazepam, clozapine) which belong to different treatment categories was studied in one hospital and three urban WWTPs in north and northwestern Greece. The...Read more
Coal fly ash zeolites as adsorbents for effective removal of heavy metals and dyes from contaminated waters
Zgureva D., (Corresponding) Boycheva S., Behunová D., Václavíková M.
Topic:
Wastewater treatment
Recently, the purification of enormous amounts contaminated industrial, agricultural and municipal waters increases the demands of low-cost and technologically feasible techniques. The application of natural zeolites in wastewater treatment is known from many years. A feasible approach for...Read more
Keywords:
Waste water treatment, Fly ash zeolites, Heavy metals, Dyes, Adsorption
The effect of alkaline activated reservoir sediments used as a binder in concrete on its compressive strength
(Corresponding) Junakova N., Junak J.
Topic:
Lakes, rivers, estuaries and ecosystem health
Sediment as the product of erosion processes is found in every water body and reduces the storage capacity and the lifetime of water reservoirs. The quantity of sediment which affects downstream areas and also their quality complicate sediment management. Dredged sediments are on the borderline of...Read more
Evapotransiration of crops and mechanical soil composition in Rhodes island
(Corresponding) Symeonidou S., Vagiona D.
Topic:
Water, energy and/or food nexus
The aim of this paper is to evaluate the green (from rainfall) and blue (from irrigation) evapotranspiration of the most widespread crops (olives, citrus, soft and hard wheat, watermelons/melons, barley, grapes, vegetables, winter/summer and spring potatoes, fodder crops, rest annual crops) in the...Read more
Magnetite nanoparticles activated coal fly ash zeolites with application in waste water remediation
(Corresponding) Boycheva S., Miteva S., Trendafilova I., Zgureva D., Václavíková M., Popova M.
Topic:
Wastewater treatment
The application of zeolites in wastewater treatment is studied long ago but still many unexploited opportunities exist. Recent investigations on natural and synthetic zeolites in water decontamination are focused on the improvement of their adsorption and ion-exchange properties modifying them by...Read more
Keywords:
Waste water treatment, Magnetic zeolites, Fly ash zeolites, Magnetite nanoparticles
Cobalt- and copper-modified coal fly ash nanozeolites for environmental protection applications
(Corresponding) Boycheva S., Marinov I., Lazarova H., Zgureva D., Václavíková M., Popova M.
Topic:
Nanomaterials in the environmnents applications and effects
Fly ash zeolites (FAZ) are promising materials for adsorbents, ion-exchangers and catalysts. FAZ usually possess a mixed micro-mesoporous structure that facilitates mass transport phenomena through their framework. Due to the transfer of iron spinel oxides and many metal species from the raw...Read more
Removal of Cr(VI) under flow conditions using a green nano-iron loaded resin
(Corresponding) Toli A., Mystrioti C., Xenidis A., Papassiopi N.
Topic:
Nanomaterials in the environmnents applications and effects
A new nanocomposite material, consisting of nanoiron incorporated in cationic resin beads, was evaluated for the removal of Cr(VI) under flow conditions, by conducting column experiments. An aqueous solution containing Cr(VI) 5 mg/L and NaCl 0.01 M as inert electrolyte was introduced in the column...Read more
Heat of adsorption in the fly ash zeolite – CO2 system at dynamic conditions
Zgureva D., (Corresponding) Boycheva S., Marinov I., Miteva S., Asenov A.
Topic:
Climate change mitigation and adaptation
The global warming represents one of the main world problems in the recent decades as it is considered that electricity production by coal burning is responsible for 40 % of the total CO2 emissions. The post-combustion capture of CO2 based on physical adsorption has the highest potential for...Read more
Keywords:
Post-combustion carbon capture, Adsorption, Coal ash zeolites, Heat of adsorption
