Volume-7 , Issue-5 , Oct 2020, ISSN 2455-3174 (Online) Go Back

• Open Access   Article

  A Comparative Study of the Adsorption of Industrial Dyes onto Grape Cores-Based Adsorbents from Aqueous Media

  M. Hamzaoui, B. Bestani, N. Benderdouche, Z.Mekkibes, O. Douinat, A.Besbes

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.5 , pp.1-8, Oct-2020

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  This study aims to evaluate the effectiveness of grapes cores treated by different chemical agents in order to compare their removal efficiency of the anthraquinonic diazo azo (Supranol yellow 4GL) the Azo anionic acid (Nylosan red N-2RBL) dyes from aqueous media. Modeling of isotherms was used to select the best adsorbent; the best adsorption energies, capacities and intensities. Fitted models and data were evaluated by using the most common isotherms models namely Langmuir and Freundlich at their linear and non-linear forms. Parameters and best fit coefficient R2 were identified. Results were statically analyzed by calculating the following errors functions: ?2 statistic; RMSE and API. By using 4 g/L of adsorbent and 100 mg/L as initial NR-dye concentration; the uptakes by GC-2 and GC-3 are 90.5 and 98 % respectively, and 88.31 % onto GC-1 for adsorbent dose of 8 g/L. The adsorption process of NR-dye by GC-3 is very well represented by Freundlich isotherm in its linear and non-linear forms, the adsorption energies of 28.15 and 42.57 mg/g respectively, are the most important, in the other hand, adsorption energy found from the non-linear Langmuir isotherm is very low (0.0203 L/mg). The removal efficiencies of SY-dye by GC-2, GC-3 and GC-1 attained 99.63 %, 99.78 % and 91.9 % respectively at an initial concentration of 100 mg/L and adsorbent dose of 4 g/L. Values of maximum adsorption capacities and energies from different linear and non-linear Langmuir isotherms models for the adsorption of SY-dye by GC-3 were found to be the most important, and the non-linear models were found more suitable. In the other hand, non-linear Freundlich isotherms models are more significant than linear, and the process of the adsorption of SY-dye by GC-3 is more favorable because the adsorption energies and intensities were found very important.

  Key-Words / Index Term
  Models; Dyes; Adsorption; Langmuir; Freundlich; Adsorbent

  References
  [1] M. Hamzaoui, B. Bestani, N. Benderdouche, Z.Mekkibes1, O. Douinat, “Adsorption of Nylosan Red onto Grapes Cores-based Activated carbon”, International Journal of Scientific Research in Chemical Sciences (IJSRCS), Vol.7, Issue.3, pp.11-19,2020.
  [2] M. Hamzaoui, B. Bestani, N. Benderdouche, Z.Mekkibes1, O. Douinat, “Anionic dye N-2RBL Removal by grape seeds-based activated carbon: A comparative study”, International Journal of Scientific Research in Chemical Sciences (IJSRCS), Vol.7, Issue.4, pp.13-20,2020.
  [3] M. Hamzaoui, B. Bestani, N. Benderdouche, “The use of linear and nonlinear methods for adsorption isotherm optimization of basic green 4-dye onto sawdust-based activated carbon”, Journal of Materials and Environmental Sciences (JMES), Vol.9, Issue.4, pp.1110-1118,2018.
  [4] I.Langmuir, “The adsorption of gases on plane surfaces of glass, mica, and platinum,” J.Am.Chem.Soc. Vol.40, pp.1361-1368, 1918.
  [5] H.Freundlich, “Adsorption in solution,” Phys.Chem.Soc. Vol.40, pp.1361-1368, 1906.
  [6] C.Theivarasu, S.Mylsamy, “Equilibrium and kinetic adsorption studies of Rhodamine-B from aqueous solutions using cocoa (Theobroma cacao) shell as a new adsorbent,” International Journal of Engineering Science and Technology, Vol.2, Issue.11, pp.6284-6292, 2010.
  [7] Harrison,Ferrin;Katti,S.K, “Optimal Design in and Hazards of linearization of Langmuir’s Nonlinear Model.” Int. J. Environ. Sci. Tech., Vol.6, Issue. 3, pp.451-456, 2009.
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  [9] John U. Kennedy Oubagaranadin, Z.V.P. Murthy and P.S. Rao. “Applicability of Three-parameter Isotherm Models for the Adsorption of Mercury on Fuller’s Earth and Activated Carbon,” INDIAN CHEMICAL ENGINEER, Indian Institute of Chemical Engineers.Vol. 49, Issue. 3, pp.196-204,2007.

  Citation
  M. Hamzaoui, B. Bestani, N. Benderdouche, Z.Mekkibes, O. Douinat, A.Besbes, "A Comparative Study of the Adsorption of Industrial Dyes onto Grape Cores-Based Adsorbents from Aqueous Media," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.5, pp.1-8, 2020

• Open Access   Article

  Quantitative Evaluation of Vitamin C and Other Physico-Chemical Parameters of Sweet and Bitter Orange and Two Lemon Fruit Concentrated Juice Extract

  P.N. Patil, M.Z. Al-Harrasi, M.H. Al Sulimani, E.S. Al Nabhani

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  Vol.7 , Issue.5 , pp.9-14, Oct-2020

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  Orange fruit is the best source of vitamin C. Citrus fruits and juices are beneficial to health because of its nutritive properties and rich in Vitamin C, minerals and good source of fiber. Present study used to make comparison between two types of lemon and orange fruits concentrated juice extract. We found that there was a proper correlation between pH, acidity, vitamin C and conductivity values obtained in all samples. The pH value of samples got 2.43 - 4.15, titrable acidity equivalent to citric acid i.e. 19 and 1.98 g/100 ml and vitamin C value was found to be 1.98 & 2.24 g/100 ml of samples. Conductivity of orange and lemon samples found to be 2.831 & 2.628 MS/cm. % ash was found in 6.08 – 11.6 %, crude fiber 0.418 -1.07 g/100ml, potassium 113 – 176 mg/100ml, sodium 43 -56 mg/100ml, calcium 2.16 - 6.32 mg/100ml, mg 5.2 - 10.67 mg/100ml while iron was found 0.119 - 2.009 mg/100ml. Based on the result obtained in research shows that, both lemon samples were high amount of vitamin C, crude fiber value, conductivity, calcium and iron value. While other parameters are more or less close to each other in all samples of lemon and oranges.

  Key-Words / Index Term
  Quantitative analysis, lemon fruit, orange fruit, physico-chemical analysis

  References
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  Citation
  P.N. Patil, M.Z. Al-Harrasi, M.H. Al Sulimani, E.S. Al Nabhani, "Quantitative Evaluation of Vitamin C and Other Physico-Chemical Parameters of Sweet and Bitter Orange and Two Lemon Fruit Concentrated Juice Extract," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.5, pp.9-14, 2020

• Open Access   Article

  K-10 Montmorillonite Catalysed Solvent Free Synthesis of Coumarins via Pechmann Condensation

  P.P. Kalbende, N.B. Jadhav

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.5 , pp.15-21, Oct-2020

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  Abstract
  An efficient solvent free one pot synthesis of coumarins by pechmann condensation of substituted phenols with ethyl acetoacetate using k-10 montmorillonite as a catalyst have been carried out. A plausible mechanism is proposed involving Michael addition resulting into the formation of coumarins. The reaction was refluxed at 1100C for 3-4 hrs on water bath. This one-pot synthesis was carried out on solid clay catalyst support which provides the products in good yields. Effect of molar ratio, amount of catalyst, reaction temperature and time on the yield of 4,7-dimethyl coumarin has been discussed. All the newly synthesized compounds were established from advanced spectroscopic data. The proposed method using the environmentally friendly recyclable catalyst k-10 montmorillonite offers the unique advantages of high yields, shorter reaction times, easy and quick isolation of the products and a one-pot green synthesis.

  Key-Words / Index Term
  Solvent-free; coumarins; k-10 montmorrillonite; one-pot synthesis; pechmann condensation

  References
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  Citation
  P.P. Kalbende, N.B. Jadhav, "K-10 Montmorillonite Catalysed Solvent Free Synthesis of Coumarins via Pechmann Condensation," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.5, pp.15-21, 2020

• Open Access   Article

  Quantitative Evaluation of Nutritional fact of Pomegranate Fruit Extract and Comparison with Two Pomegranate Packed Juice Samples.

  Patil Pandurang N., Badriya Al-Saidi, Fatma Al-Mawali, Majda Al-Shabibi, Khalsa Al-Hatmi

  Research Paper | Journal-Paper (IJSRCS)

  Vol.7 , Issue.5 , pp.22-26, Oct-2020

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  Abstract
  The aim of the present study was to analyze and comparison of various nutritional fact of pomegranate juice extract and pomegranate packed juice sample. We have studied various physico-chemical parameters and found result such as pH (2.96 – 4.09), conductivity (0.109 – 0.949 MS/cm), TSS (13 – 17.5 %), acidity, (0.0052 – 0.158 g/100ml), vitamin C (0.077 – 0.158%), crude fiber (3.01 – 5.33 %), sodium (15.9 – 21.8 mg/100ml), potassium (17.89 – 90.5 mg/100ml), calcium (3.2 – 81.6 mg/100ml), iron (0.088 – 0.767 mg/100ml) etc. We used very cost effective different chemical and instrumental method for analysis. Study shows that, the pomegranate fruit juice extract was found good amount and significant values of various nutrition values less acidic, TSS, crude fiber, ash. Minerals demonstrate various health benefits and result obtained our study shows that, potassium, magnesium, calcium and iron are significant amount in fruit juice extract (diluted). While sodium found lower in fruit juice sample than packed juice. Lower value of sodium is good for health.

  Key-Words / Index Term
  Pomegranate fruit extract, pomegranate packed juice, physico-chemical analysis, nutrition fact, comparison

  References
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  Citation
  Patil Pandurang N., Badriya Al-Saidi, Fatma Al-Mawali, Majda Al-Shabibi, Khalsa Al-Hatmi, "Quantitative Evaluation of Nutritional fact of Pomegranate Fruit Extract and Comparison with Two Pomegranate Packed Juice Samples.," International Journal of Scientific Research in Chemical Sciences, Vol.7, Issue.5, pp.22-26, 2020