Importance of Glucose and Pseudomonas in Producing Degradable Plastics

2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Farzaneh Sabbagh Mojaveryazdi ◽  
Ida Idayu Muhamad ◽  
Shahabaldin Rezania ◽  
Hiro Benham
Keyword(s):  
Fourier Transform ◽  
Absorption Band ◽  
Ftir Spectroscopy ◽  
Growth Parameters ◽  
Carbon Sources ◽  
Spectroscopy Analysis ◽  
Surface Method ◽  
Stretching Vibration ◽  
Degradable Plastics ◽  
Pha Production

In this study, bacteria, P. oleovorans, was studied for its ability to produce PHA with glucose, fructose and sucrose as carbon sources that was grown at 25°C. The functional groups of the extracted PHA granules were identified as C=O group by Fourier transform Iinfrared (FTIR) spectroscopy analysis. The drastic absorption band at approximately 1720 cm‒1 indicates the stretching vibration of the C=O groups in the PHA polyester. The optimized production of PHA was done by RSM (Response Surface Method) through various growth parameters. The best condition of productivity range for glucose is 93.4419 g/L. In addition, the highest PHA production after optimization is 2.28236 g/L with a desirability of 0.986 g/L, meanwhile the highest amount of PHA produced from P. oleovorans was 2.30 g/L. 

scholarly journals Chemical study of asphaltene inhibitors effects on asphaltene precipitation of an Iranian oil field

2020 ◽  
Vol 75 ◽  
pp. 6 ◽  
Author(s):  
Afshar Ahmadbaygi ◽  
Behrouz Bayati ◽  
Mohsen Mansouri ◽  
Hossein Rezaei ◽  
Masoud Riazi
Keyword(s):  
Fourier Transform ◽  
Crude Oil ◽  
Ftir Spectroscopy ◽  
Chemical Structure ◽  
Chemical Study ◽  
Oil Field ◽  
Asphaltene Precipitation ◽  
Spectroscopy Analysis ◽  
Synthetic Oil ◽  
Onset Point

The amount of precipitated asphaltene can be considerably reduced with pretreatment of asphaltene inhibitor, in the crude oil. Efficiency of asphaltene inhibitors mainly depends on some parameters such as pH of the oil and the chemical structure of asphaltene inhibitors. In this paper, the amounts of asphaltene precipitation have been experimentally measured using two n-paraffin precipitants; n-heptane and n-hexane. The performance of the studies on the asphaltene accumulation was studied using Fourier-Transform Infrared (FTIR) Spectroscopy analysis. The onset point has been determined by three different commercial asphaltene inhibitors. The results show that when an asphaltene inhibitor is not injected into the mixture of synthetic oil/n-heptane, AOP (Asphaltene Onset Point) occurs at 35 vol.% of n-heptane, while with addition of 3000 ppm of asphaltene B inhibitor, AOP occurs at 60 vol.% of n-heptane.

A Conversion and Tribology Investigation on Used Ayurvedic Oil

2015 ◽  
Vol 813-814 ◽  
pp. 885-889 ◽  
Author(s):  
Ranganathan Balakumar ◽  
G. Sriram ◽  
S. Arumugam ◽  
V. Abhijith Koushal ◽  
Villa Sai Surya Venkatesh
Keyword(s):  
Fourier Transform ◽  
Methyl Ester ◽  
Ftir Spectroscopy ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fourier Transform Infrared ◽  
Wear Scar ◽  
Spectroscopy Analysis ◽  
Ic Engine ◽  
The Fourier Transform

Biofuel plays a major role in IC engine nowadays. Used Ayurvedic Oil (UAO) is one among the alternative fuels utilized. The preliminary property studies were carried out and the UAO had undergone simple Transesterification process to be converted to Used Ayurvedic Oil Methyl Ester (UAOME). The Fourier Transform Infrared (FTIR) spectroscopy analysis confirmed the UAO to UAOME conversion. The Trobological investigation on UAOME is also conducted using Four Ball Wear Tester. The results showed that lower wear scar was observed in UAOME comparatively with diesel. From the results it is clear that the UAO can be a novel partial substitute for diesel fuel.

Infra-Red Spectroscopy Analysis of Malva Fibers

2014 ◽  
Vol 775-776 ◽  
pp. 255-260 ◽  
Author(s):  
Sergio Neves Monteiro ◽  
Frederico Muylaert Margem ◽  
Jean Igor Margem ◽  
Lucas Barbosa de Souza Martins ◽  
Caroline Gonçalves Oliveira ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Polymer Composites ◽  
Environmentally Friendly ◽  
Spectroscopy Analysis ◽  
Absorption Bands ◽  
Lignocellulosic Fibers ◽  
Lignocellulosic Fiber ◽  
Synthetic Materials ◽  
Infra Red

The growing interest for natural materials as an environmentally friendly alternative for the substitution of energy intensive and non-sustainable synthetic materials, has motivated the use of lignocellulosic fibers as reinforcement of polymer composites. The malva fiber, a relatively unknown lignocellulosic fiber with potential for composite reinforcement, still needs to be characterized for possible engineer applications. Therefore, the present work analyzed the malva fiber by means of Fourier Transform Infra-red (FTIR) spectroscopy. The malva fiber FTIR spectrum revealed main absorption bands typical of any lignocellulosic fiber. However, some specific bands as well as bands broadening and intensity suggested particular activities for functional molecular groups in the malva fiber.

Pyridinium Ions - New Probe for Basic Sites of Solid Acids

1995 ◽  
Vol 60 (3) ◽  
pp. 393-402 ◽  
Author(s):  
Josef Kotrla ◽  
Jan Florián ◽  
Ludmila Kubelková ◽  
Jacques Fraissard
Keyword(s):  
Hydrogen Bonding ◽  
Fourier Transform ◽  
Alkali Metal ◽  
Ftir Spectroscopy ◽  
Quantum Chemical ◽  
Basic Sites ◽  
Hydrogen Bonding Interactions ◽  
Acid Zeolites ◽  
Stretching Vibration ◽  
Pyridinium Ion

The hydrogen bonding interactions of the pyridinium ion (PyH+) with the deprotonated skeleton of acid zeolites were studied using Fourier transform infrared (FTIR) spectroscopy and quantum chemical ab initio calculations. It was found that the frequency of the NH stretching vibration, n(NH), of the newly formed H-bond increases in the zeolite sequence HNaX < HY < HM ~ HZSM-5. This is related to decreasing basicity of the skeletal oxygens (basic sites conjugated to bridging hydroxyls). Therefore, pyridine can serve as a probe for the basic sites of acid zeolites. In this way it can complement the pyrrole probe, which is established for basicity monitoring of alkali-metal exchanged zeolites.

Analysis of SCS-6 silicon carbide fibers by Fourier transform infrared spectroscopy

1997 ◽  
Vol 12 (2) ◽  
pp. 329-331
Author(s):  
S. Krishnamurthy
Keyword(s):  
Silicon Carbide ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Ftir Spectroscopy ◽  
Fourier Transform Infrared ◽  
Spectroscopy Analysis ◽  
Silicon Carbide Fibers ◽  
Low Levels ◽  
Reported Data ◽  
No Absorption

Fourier transform infrared (FTIR) spectroscopy analysis of SCS-6 silicon carbide fibers was performed to detect the presence of oxygen in the form of SiO2. The results showed infrared peaks corresponding to SiC fundamental lattice absorption as well as reflection. No absorption peak due to SiO2 was observed. These results are in agreement with previously reported data indicating low levels of oxygen in this fiber.

Synthesis of Ag-Hydroxyapatite

2016 ◽  
Vol 720 ◽  
pp. 234-238
Author(s):  
Flavia Mendonça Fonseca ◽  
Andrea Machado Costa ◽  
Rubens Lincoln Santana Blazutti Marçal ◽  
Daniel Navarro da Rocha ◽  
José Brant de Campos ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Ftir Spectroscopy ◽  
Grain Growth ◽  
Sem Analysis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Heat Treated ◽  
Xrd Patterns

Silver-bioceramics have a great potential to optimize the bone grafts materials to avoid microorganism infections on patients. The present study synthesized and characterized hydroxyapatite doped with silver (Ag), by an acidic route of precipitation method, and the proposal of the Ag-HA synthesis is to promote the bioactivity and bactericidal ability with less toxicity for organism. The samples were analyzed by X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy analysis. There was a pronounced grain growth after 1100°C HA and AgHA heat treatments for both HA and Ag-HA powders, observed by FEG-SEM analysis. XRD patterns of AgHA sintered at 1100°C showed HA as the main phase, but also a secondary whitlockite phase. However, 100% HA was observed for the Ag-HA samples heat treated at 700°C and 900°C. However, pure HA showed decomposition at 900°C. The acidic route of precipitation method showed to be effective for silver-doped hydroxyapatite production.

Conductivity Studies of Schiff Base Ligands Derived from O-Phenylenediamine and Their Co(II) and Zn(II) Complexes

2015 ◽  
Vol 12 (2) ◽  
pp. 13
Author(s):  
Muhamad Faridz Osman ◽  
Karimah Kassim
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Schiff Base ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Impedance Spectroscopy ◽  
Ftir Spectroscopy ◽  
Coordination Complexes ◽  
Frequency Range ◽  
Schiff Base Ligands

The coordination complexes of Co(II) and Zn(II) with Schiff bases derived from o-phenylenediamine and substituted 2-hydroxybenzaldehyde were prepared All compounds were characterized by Fourier transform infrared (FTIR) spectroscopy and Nuclear magnetic resonance (NMR) spectroscopy elemental analyzers. They were analyzed using impedance spectroscopy in the frequency range of 100Hz-1 MHz. LI and L2 showed higher conductivity compared to their metal complexes, which had values of 1.3 7 x 10-7 and 6.13 x 10-8 S/cm respectively. 

Sign in / Sign up

Export Citation Format

Share Document