ftir Articles

263 Results found

Characterization of modified PVDF membrane by gamma irradiation for non-potable water reuse

by IWA Publishing  (Mar. 27, 2015)

Poly(vinylidene fluorine) (PVDF) membranes were grafted by gamma-ray irradiation and were sulfonated by sodium sulfite to modify the surface of the membranes. The characteristics of the modified PVDF membranes were evaluated by the data of Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), field-emission scanning ...

Transformation characteristics of organic pollutants in Fered-Fenton process for dry-spun acrylic fiber wastewater treatment

by IWA Publishing  (Dec. 19, 2014)

The Fered-Fenton process using Ti sheet as cathode and RuO2/Ti as anode was employed for the pretreatment of dry-spun acrylic fiber manufacturing wastewater. The effects of feeding mode and concentration of H2O2 on chemical oxygen demand (COD) removal efficiency as well as the biodegradability variation during the Fered-Fenton process were ...

The African crested rat’s poisonous hairs studied by attenuated total reflection infrared spectroscopy case study

by Specac Limited  (Nov. 25, 2014)

Introduction Plant toxins are commonly used by many invertebrates, as an effective defence against predation. However, such behaviour has recently been observed in a mammal.1 The African crested rat, Lophiomys imhausi, applies a potent toxin to the fur alongside its flanks. It acquires this toxin from Acokanthera schimperi,1 a shrub abundant in ...

Enhanced electrochemical oxidation of Acid Red 3R wastewater with iron phosphomolybdate supported catalyst

by IWA Publishing  (Mar. 27, 2015)

Electrochemical oxidation of Acid Red 3R (AR3R) was investigated with the new catalyst of iron phosphomolybdate (FePMo12) supported on modified molecular sieves type 4 Å (4A) as packing materials in the reactor. The results of the Fourier transform infrared spectroscopy and X-ray diffraction indicated that the heteropolyanion had a Keggin ...

Optimized photocatalytic degradation of caffeic acid by sol–gel TiO2

by IWA Publishing  (Mar. 27, 2015)

TiO2 anatase powder was prepared by means of the sol–gel method with titanium(IV) butoxide as precursor. The formation of a tetragonal crystal structure of TiO2 anatase at 500 °C was confirmed by X-ray powder diffraction. The characterization of the samples synthesized was complemented by scanning electron microscopy, diffuse ...

Adsorption of copper on tri-amino-functionalized mesoporous delta manganese dioxide from aqueous solution

by IWA Publishing  (Mar. 16, 2015)

A novel adsorbent, named tri-amino-functionalized mesoporous delta manganese dioxide (NNN-MnO2), was synthesized by bonding trimethoxysilyl propyl diethylenetriamine onto the surface of delta manganese dioxide (δ-MnO2) and used as a Cu(II) adsorbent in aqueous solution. The graft of silane coupling agent onto δ-MnO2 was verified by ...

Effect of streptavidin functionalised Fe 3 O 4 on the sedimentation of starch

by Inderscience Publishers  (Jan. 16, 2015)

Sedimentation velocity of starch was determined at three different pH in the presence of streptavidin functionalised Fe 3 O 4 nanoparticle. In the first step, the streptavidin functionalised Fe 3 O 4 nanoparticle was synthesised and characterised by various analytical techniques like Fourier transform infrared (FTIR) spectroscopy, X-ray ...

Gemas: Prediction of solid‐solution phase partitioning coefficients (Kd) for oxoanions and boric acid in soils using mid‐infrared diffuse reflectance spectroscopy

by John Wiley & Sons, Ltd.  (Dec. 5, 2014)

The authors' aim was to develop rapid and inexpensive regression models for the prediction of partitioning coefficients (Kd), defined as the ratio of the total or surface‐bound metal/metalloid concentration of the solid phase to the total concentration in the solution phase. Values of Kd were measured for boric acid (B(OH)30) and selected added ...

FTIR resolution requirements for industrial gas analyses

by CIC Photonics, Inc.  (May 1, 2013)

FTIR Spectroscopy FTIR Spectroscopy is a widely used technique for gas analyses in industrial applications. It is a technique used in the semiconductor industry for measuring the purity of cleaning, etching, and epitreatment gases used with various process tools, reactors, and abatement devices. Among chemical companies and R&D faciltities, ...

Aerobic co-treatment of landfill leachate and domestic wastewater – are slowly biodegradable organics removed or simply diluted?

by IWA Publishing  (Dec. 19, 2014)

This study investigated the co-treatment of landfill leachate/domestic wastewater in bench-scale activated sludge (AS) reactors to determine whether the slowly biodegradable organic matter (SBOM) was removed rather than diluted. The AS reactors were loaded with mixtures of raw leachate and leachate that was pretreated by air stripping. The ...

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