نتایج جستجو برای: bio sorbent

تعداد نتایج: 63826  

2014
A. J Esan

This study was carried out to determine sero-prevalence of hepatitis B and hepatitis C virus co-infection among pregnant women. Viral hepatitis during pregnancy is associated with high risk of maternal complications; infections with Hepatitis B virus (HBV) or the Hepatitis C virus (HCV) are public health problems. Worldwide, there are about 350 million HBV carriers and 130 to 170 million people...

2017
Tiago Fernandes Sofia F. Soares Tito Trindade Ana L. Daniel-da-Silva

Although paraquat has been banned in European countries, this herbicide is still used all over the world, thanks to its low-cost, high-efficiency, and fast action. Because paraquat is highly toxic to humans and animals, there is interest in mitigating the consequences of its use, namely by implementing removal procedures capable of curbing its environmental and health risks. This research descr...

In this study, ultrasonic-assisted matrix solid-phase dispersion (UA-MSPD) as a new sample preparation method for natural product analysis was developed. Influential parameters of the UA-MSPD method was optimized using oleuropein content of olive leaves as a model analyte. Main parameters of the proposed technique such as ultrasonic time, amplitude and pulse, sorbent material, the ratio of samp...

Journal: :Analytica chimica acta 2012
Catarina L Silva João L Gonçalves José S Câmara

A new approach based on microextraction by packed sorbent (MEPS) and reversed-phase high-throughput ultra high pressure liquid chromatography (UHPLC) method that uses a gradient elution and diode array detection to quantitate three biologically active flavonols in wines, myricetin, quercetin, and kaempferol, is described. In addition to performing routine experiments to establish the validity o...

Journal: :Environmental science & technology 2008
Steven L Trabue Kenwood D Scoggin Hong Li Robert Burns Hongwei Xin

Most air quality studies in agricultural environments use thermal desorption analysis for quantifying semivolatile organic compounds (SVOCs) associated with odor. The objective of this study was to develop a robust sampling technique for measuring SVOCs in humid environments. Test atmospheres were generated at ambient temperatures (23 +/- 1.5 degrees C) and 25, 50, and 80% relative humidity (RH...

Journal: :Fuel Processing Technology 2021

The dual effect of dolomite as a CO2 sorbent and deoxygenation catalyst in fast pyrolysis beechwood was investigated. Investigation performed on bench scale fluidized bed reactor at an temperature 500 °C different WHSV. breakthrough curves bio-oil samples were produced simultaneously. results show that is both feasible it moderately deoxygenated free H2 rich gas. Acids eliminated, whereas the c...

Journal: :Processes 2023

In this study, zinc oxide nanoparticles (ZnO NPs) were biosynthesized with the use of an extract derived from seaweed (Sargassum sp.) and used as a sorbent for removal Cr(III) ions wastewater. The biosorption properties itself well post-extraction residue investigated comparison. ZnO NPs characterized UV–vis, ICP-OES, FTIR, XRD, SEM techniques. sorption capacity (bio)sorbents was function conta...

Journal: :Nucleation and Atmospheric Aerosols 2023

In the current scenario, removal of heavy metals from contaminated water has become a major challenging task to world researchers because disposal untreated into aquatic environment have adverse effect towards ecosystem. Keeping this in mind, present study investigates synthesize sugarcane bagasse biochar modified magnetic nanoparticles decontamination and their batch scale potential chromium (...

Journal: :Journal of environmental sciences 2008
Pimol Punjongharn Khanidtha Meevasana Prasert Pavasant

Green macroalga Caulerpa lentillifera was found to have reasonable adsorption capacity for basic dyes, Astrazon Blue FGRL (AB), Astrazon Red GTLN (AR), and Astrazon Golden Yellow GL-E (AY). The initial dye concentration was in the range of 100-1,800 mg/L. The dried algal sorbent was ground and sieved into 3 sizes: S (0.1-0.84 mm), M (0.84-2.0 mm), and L sizes (larger than 2.0 mm). For all condi...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2013
Maarten Wester Frank Simonis Karin G Gerritsen Walther H Boer Will K Wodzig Jeroen P Kooman Jaap A Joles

BACKGROUND Continuous dialysis could provide benefit by constant removal of potassium and phosphate. This study investigates the suitability of specific potassium and phosphate sorbents for incorporation in an extracorporeal device by capacity and regenerability testing. METHODS Capacity testing was performed in uraemic plasma. Regenerability was tested for potassium sorbents, with adsorption...

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