ftir Articles

276 Results found

Development of permeability properties of polyamide thin film composite nanofiltration membrane by using the dimethyl sulfoxide additive

by IWA Publishing  (Sep. 5, 2014)

A novel polyamide thin film composite (PATFC) as a nanofiltration (NF) membrane was prepared by a modified interfacial polymerization (IP) reaction. Herein trimesoyl chloride and piperazine as the reagents, dimethyl sulfoxide (DMSO) as additive and polysulfone (PSF) ultrafiltration membrane as support were used respectively. The main goal of the ...

Wanted – $48 Trillion to Meet World Energy Needs to 2035

by GLOBE Foundation  (Jun. 3, 2014)

Meeting the world’s growing need for energy will require more than $48 trillion in investment over the period to 2035, according to a special report on investment released today by the International Energy Agency (IEA) as part of the World Energy Outlook series. Today’s annual investment in energy ...

Synthetic organic polymer fouling in municipal wastewater reuse reverse osmosis

by IWA Publishing  (Sep. 5, 2014)

A full scale waste water reuse plant suffered from irreversible fouling of the reverse osmosis (RO) membranes. The major suspect of fouling is cationic organic polymers applied in the wastewater sludge treatment. Thus, the purpose of this research is to study the effect of six cationic polymers, applied in the plant, on RO membrane performance. ...

FTIR analyser improves anaesthetic gas detection at Torbay Hospital

by Gasmet Technologies Oy  (Dec. 10, 2013)

A unique gas measurement technology has enabled South Devon Healthcare’s Pharmacy Manufacturing Unit (PMU) at Torbay Hospital to conduct highly effective and detailed analysis of anaesthetic gases in a variety of hospital locations. The primary function of the PMU’s quality control department is to check active ingredient levels and ...

Profile: Factors that influence properties of FOG deposits and their formation in sewer collection systems

by IWA Publishing  (Aug. 29, 2014)

The quantification of the factors that may affect the formation of the fat, oil, and grease (FOG) deposits and their chemical and rheological properties were predominantly covered in the paper. The factors included the types of fats used in food service establishments (FSEs) and the types of calcium sources and environmental conditions (i.e. pH ...

Wastewater Treatment Plant Monitors Greenhouse Gas Emissions

by Gasmet Technologies Oy  (Apr. 16, 2014)

Globally, little attention is paid to gaseous emissions from wastewater treatment processes. This contrasts greatly with the regulatory monitoring that is applied to the quality of water emissions from such facilities. However, in Helsinki, Finland, a large municipal wastewater treatment facility continuously monitors its emissions of greenhouse ...

Effects of pH on chromate(VI) adsorption by Spirulina platensis biomass: batch tests and FT-IR studies

by IWA Publishing  (May 9, 2013)

Raw and methylated biomass of Spirulina platensis was employed in chromate batch adsorption tests at pH range 1–7. The acid conditions seemed to favour the removal of chromium (Cr) with a yield of 87.0 and 97.6% by using raw and methylated biomass, respectively. However, the chromate and total chromium determination, carried out in ...

Preparation of carboxymethyl-quaternized oligochitosan and its scale inhibition and antibacterial activity

by IWA Publishing  (May 28, 2014)

Carboxymethyl-quaternized oligochitosan (CMQAOC) was prepared through carboxymethylization and N-quaternization of oligochitosan (OC) which was obtained from chitosan degradation. The structure was confirmed by Fourier transform infrared spectroscopy (FT-IR), 1H-NMR, and X-ray diffraction (XRD) analysis. The performances for both scale and ...

FTIR gas analysis improves container safety

by Gasmet Technologies Oy  (Feb. 22, 2013)

Introduction Entry to freight containers represents a significant hazard to staff responsible for inspection, stuffing or destuffing because of the large number of airborne chemicals that can be present. Research in Germany and the Netherlands found hazardous levels of gases and vapours in around 20% of all containers and this level of ...

Steam–activated carbon prepared from Chrysophyllum albidum seed shell for the adsorption of cadmium in wastewater: kinetics, equilibrium and thermodynamic studies

by Inderscience Publishers  (Aug. 1, 2013)

Steam–Activated Carbon (SAC) prepared from shell of the seed of Chrysophyllum albidum was used to adsorb cadmium (Cd) ion from aqueous solution. The sorption process with respect to its equilibria, kinetics and thermodynamics as well as the effects of pH, contact time, adsorbent mass, adsorbate concentration and particle size on adsorption was ...

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