A novel modified walnut shell (TWNS) was prepared through sequentially reacting the walnut shell (WNS) with thionyl chloride and triethylamine in N-methyl pyrrolidone to remove Reactive Brilliant Blue from dye wastewater. Fourier transform infrared (FTIR) and scanning electron mi...
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Research Article10.9734/ajocs/2020/v8i419052
A novel modified walnut shell (MWNS) was prepared by the reaction between maleic anhydride and raw walnut shell (WNS) in ethyl acetate. MWNSs with different carboxylic acid groups values (MWNS1 and MWNS2) are obtained and characterised by Fourier transform infrared (FTIR). The ef...
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Research Article10.9734/AJOCS/2018/44606
Polyvinyl butyral (PVB) was prepared by the condensation reaction of polyvinyl alcohol (PVA) with n-butyraldehyde using a catalyst which is a kind of deep eutectic solvent (DES) made of dodecyltrimethylammonium chloride and p-toluenesulfonic acid. The raw materials and products w...
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Research Article10.9734/ajocs/2021/v10i319095
The purpose of this study was to investigate a continuous process for the recovery of lactic acid from fermentation broth. A reactive distillation process to purify lactic acid by esterification with isoamyl alcohol and hydrolysis was designed and simulated by Aspen. Five columns...
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Research Article10.9734/ajocs/2021/v9i119063
The adsorption behavior of sodium bisulfate on silica gel was studied. The adsorption isothem of sodium hydrogen sulfate on silica gel were measured in the temperature range of 298.15 ~ 328.15 K, and the Langmuir model and the Dubini-Radushkevich (D-R) model were used to fit the...
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Research Article10.9734/ajocs/2020/v7i319024
The solubility of benzoic acid was determined in six alcohols (isobutanol, n-pentanol, isoamylol, 2-pentanol, tert-amyl alcohol and n-hexanol) from (288.15 to 336.15 K) by the dynamic method. The value of solubility rises with the increase of temperature and the order of solvents...
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Research Article10.9734/AJOCS/2017/39216
In this work, two series of poly (ethylene adipate) (PEA) samples with broad and narrow molecular weight distribution (MWD) were prepared by the polymerization between adipic acid and ethylene glycol. An accurate and swift method, one-point method, was used to determine the intri...
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Research Article10.9734/CSJI/2017/35258
In this work, nylon 6/66 (S0) and nylon 6/66/510 (S1~S3) containing 5 ~ 15 mol % nylon-510 were synthesized by melt condensation polymerization and the isothermal crystallization kinetics and melting behaviors after isothermal crystallization of copolymer were systematically stud...
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Research Article10.9734/ACSJ/2016/25442
The adsorption isotherms and kinetics of acrylic acid modified walnut shell (AA-WNS) for Pb(II) were investigated in the temperature range of 288-308K. Scanning electron microscope (SEM) was utilized for evaluation of the developed walnut shell. Adsorption isotherm data were bett...
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Research Article10.9734/ACSJ/2016/23548
In this paper, the esterification reaction for a batch reactor between adipic acid (AA) and 1,6-hexanediol (1,6-HD) catalyzed by tetrabutyl titanate (Ti(OBu)4) was studied in the temperature range of 413-443 K. A kinetic model based on the assumption of 3.5-order reaction was pro...
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Research Article10.9734/AJOCS/2018/46013
Pentaerythritol diacrylate (PEDA) is synthesized by the esterification of pentaerythritol (PER) with acrylic acid (AA) using p-toluenesulfonic acid (PTSA) supported on silica as a catalyst. Fourier transform infrared spectrometer (FT-IR), and carbon nuclear magnetic resonance spe...
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Research Article10.9734/AJOCS/2018/41480
This paper presents the synthesis and application of a modified poly (trimethylene terephthalate) for Fused deposition modeling process. Five samples(S1-S5) of poly(trimethylene terephthalate-co-isophthalate-co-seacate) (PTTIS) were prepared by direct esterification and subsequen...
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Research Article10.9734/CSJI/2017/32333
The hydrogen type sulfonic resin 732 cation-exchange resin (732-CR) was applied to exchange Mg(II) from aqueous solution. The ion exchange kinetics were studied in batch experiments at temperature range of 298-328 K and Mg(II) concentration range of 5-40 mol·m-3. The kinetic data...
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Research Article10.9734/CSJI/2016/29509
In this work, a series of poly(Hexanediol adipate)(PHA) samples (103＜Mn＜104) with narrow molecular weight distribution were prepared by the polymerization between adilic acid and 1,6-hexandiol. End-group analysis was applied to determine the number average molecular weight (Mn)...
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Research Article10.9734/ajocs/2019/v6i218992