The spectroscopic (FT-IR, FT-Raman and NMR), NCA, Fukui function analysis first order hyperpolarizability, TGA of 6-chloro-3,4dihydro-2H-1,2,4-benzothiazine-7-sulphonamide1,1-dioxide by ab initio HF and Density Functional method

Porchelvi, E. Elamurugu; Muthu, S.

doi:10.1016/j.saa.2013.12.037

Cited by 7 publications

(6 citation statements)

References 40 publications

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“…representing C-Cl bonding [27] and that at 646 cm −1 corresponding to C-Cl bending vibration [28] were not detected in the samples examined in this study. Therefore, the NaCl injection did not induce bonding with C. The broad peak over the 700-1600 cm −1 range in Figure 4 indicates the presence of cellulosic and ligneous constituents.…”

Section: Fourier Transform Infrared Analysiscontrasting

confidence: 61%

“…In other words, if NaCl is present in the biomass during pyrolysis, phosphoruscompound decomposition to PO4 3− rather than HPO4 2− is induced. The peak at 520 cm −1 representing C-Cl bonding [27] and that at 646 cm −1 corresponding to C-Cl bending vibration [28] were not detected in the samples examined in this study. Therefore, the NaCl injection did not induce bonding with C.…”

Section: Fourier Transform Infrared Analysiscontrasting

confidence: 60%

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Influence of NaCl Concentration on Food-Waste Biochar Structure and Templating Effects

Lee

Kim

et al. 2018

Energies

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Food-waste-derived biochar structures obtained through pyrolysis and with different NaCl concentrations were investigated. Increased NaCl concentration in the samples inhibited cellulose and lignin decomposition, ultimately increasing the biochar yield by 2.7% for 20%-NaCl concentration. NaCl added in solution state exhibited templating effects, with maximum increases in the Brunauer–Emmett–Teller (BET) surface area and pore volume of 1.23 to 3.50 m2∙g−1 and 0.002 to 0.007 cm3∙g−1, respectively, after washing. Adding a high concentration (20%) of NaCl reduced the BET surface area. In contrast, the mean pore diameter increased owing to the increased NaCl clustering area. Increased NaCl clustering with increased added NaCl was shown to have positive effects on NaCl removal by washing. Furthermore, as the NaCl adhered to the KCl scattered in the food waste, a high NaCl concentration also had positive effects on KCl removal. This study reports on an investigation on the effects of varying NaCl concentrations injected in solution form on the structure of food-waste biochar during pyrolysis. The templating effect was considered using both added NaCl and NaCl already contained in the food waste, with implementation of a desalination process essential for food-waste treatment for recycling.

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Section: Fourier Transform Infrared Analysiscontrasting

confidence: 61%

Section: Fourier Transform Infrared Analysiscontrasting

confidence: 60%

Influence of NaCl Concentration on Food-Waste Biochar Structure and Templating Effects

Lee

Kim

et al. 2018

Energies

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show abstract

“…Thus, the salt contained in the food wastes affects the aromatic carbon in various biochar structures during the pyrolysis process. Additionally, the peak at 520 cm −1 , which indicates the bonding of C-Cl [47], is not shown regardless of the pyrolysis temperature and salt content. This result demonstrates that the NaCl does not affect the biochar structure in the discrete state as Na + and Cl − .…”

Section: Nmr Analysis Of Salty Food Waste Derived Biocharmentioning

confidence: 94%

“…In addition, the peak at 700 cm −1 appears in the standard without salt, while the peak is weak or does not appear at all in the presence of salt. This peak indicates the rocking vibration and binding of CH2 with asymmetric deformation of aromatic ketone [47]. When salt is present, this bond is not induced.…”

Section: Nmr Analysis Of Salty Food Waste Derived Biocharmentioning

confidence: 97%

“…The peak near 550-600 cm −1 indicates C=O deformation of aromatic ketone [46]. Porchelvi and Muthu [47] investigated that the 552 cm -1 peak results from SO2 bound to deformed aromatic ketone and found that the 560 cm −1 peak appears due to cyano bound to a deformed aromatic ketone. In other words, a higher salt content induces more bonding of a specific compound to the aromatic ketone deformed in the pyrolysis process.…”

Section: Ft-ir Analysis Of Salty Food-waste-derived Biocharmentioning

confidence: 99%

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Chemical Characteristics and NaCl Component Behavior of Biochar Derived from the Salty Food Waste by Water Flushing

Lee

Kim

et al. 2017

Energies

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Abstract:Biochar is the product of the pyrolysis of organic materials in a reduced state. In recent years, biochar has received attention due to its applicability to organic waste management, thereby leading to active research on biochar. However, there have been few studies using food waste. In particular, the most significant difference between food waste and other organic waste is the high salinity of food waste. Therefore, in this paper, we compare the chemical characteristics of biochar produced using food waste containing low-and high-concentration salt and biochar flushed with water to remove the concentrated salt. In addition, we clarify the salt component behavior of biochar. Peak analysis of XRD confirms that it is difficult to find salt crystals in flushed char since salt remains in the form of crystals when salty food waste is pyrolyzed washed away after water flushing. In addition, the Cl content significantly decreased to 1-2% after flushing, similar to that of Cl content in the standard, non-salted food waste char. On the other hand, a significant amount of Na was found in pyrolyzed char even after flushing resulting from a phenomenon in which salt is dissolved in water while flushing and Na ions are adsorbed. FT-IR analysis showed that salt in waste affects the binding of aromatic carbons to compounds in the pyrolysis process. The NMR spectroscopy demonstrated that the aromatic carbon content, which indicates the stability of biochar, is not influenced by the salt content and increases with increasing pyrolysis temperature.

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Vibrational spectroscopic, structural and quantum chemical studies on N-phenyl-3-pyridinecarboxamide

Premkumar¹,

Rekha²,

Asath³

et al. 2016

Journal of Molecular Structure

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The spectroscopic (FT-IR, FT-Raman and NMR), NCA, Fukui function analysis first order hyperpolarizability, TGA of 6-chloro-3,4dihydro-2H-1,2,4-benzothiazine-7-sulphonamide1,1-dioxide by ab initio HF and Density Functional method

Cited by 7 publications

References 40 publications

Influence of NaCl Concentration on Food-Waste Biochar Structure and Templating Effects

Influence of NaCl Concentration on Food-Waste Biochar Structure and Templating Effects

Chemical Characteristics and NaCl Component Behavior of Biochar Derived from the Salty Food Waste by Water Flushing

Vibrational spectroscopic, structural and quantum chemical studies on N-phenyl-3-pyridinecarboxamide

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