Physicochemical studies of L-valine and L-isoleucine in aqueous solutions of [Emim][HSO4] at different temperatures

2021 ◽  
pp. 117821
Author(s):  
Ushma Syal ◽  
Sushma Devi ◽  
Chandani Sharma ◽  
Mukesh Kumar ◽  
Neha Sawhney ◽  
...  
2014 ◽  
Vol 70 (6) ◽  
pp. 964-971
Author(s):  
Xu Chen ◽  
Zhen-hu Xiong

Magnetic multi-wall carbon nanotubes (M-MWCNTs) were used as an adsorbent for removal of furaltadone from aqueous solutions, and the adsorption behaviors were investigated by varying pH, sorbent amount, sorption time and temperature. The results showed that the adsorption efficiency of furaltadone reached 97% when the dosage of M-MWCNT was 0.45 g · L−1, the pH was 7 and the adsorption time was 150 min. The kinetic data showed that the pseudo-second-order model can fit the adsorption kinetics. The sorption data could be well explained by the Langmuir model under different temperatures. The adsorption process was influenced by both intraparticle diffusion and external mass transfer. The experimental data analysis indicated that the electrostatic attraction and π–π stacking interactions between M-MWCNT and furaltadone might be the adsorption mechanism. Thermodynamic analysis reflected that adsorption of furaltadone on the M-MWCNT was spontaneous and exothermic. Our study showed that M-MWCNTs can be used as a potential adsorbent for removal of furaltadone from water and wastewater.


2008 ◽  
Vol 222 (1) ◽  
pp. 177-204 ◽  
Author(s):  
Parampaul Kaur Banipal ◽  
Harpreet Singh Dhanjun ◽  
Suman Sharma ◽  
Harneet Hundal ◽  
Tarlok Singh Banipal

2017 ◽  
Vol 40 (1) ◽  
pp. 40-49 ◽  
Author(s):  
Rejane S. Cargnin ◽  
Paulo C. do Nascimento ◽  
Luis M. Ferraz ◽  
Márcia M. Barichello ◽  
Letícia C. Brudi ◽  
...  

2021 ◽  
Vol 2 (1) ◽  
pp. 012-027
Author(s):  
M. Sathish ◽  
K. Venkataramanan ◽  
R. Padmanaban ◽  
Helan Ruth ◽  
K. Vadivel ◽  
...  

In this work, acoustic, thermal, and optical properties were tested on the different concentrations of the Disodium Tartrate solutions. First, the viscosity studies were analyzed for the Disodium tartrate in the concentration range from 2% to 20% with different temperatures 303K, 308K, 313K, and 318K. It was noted that the relative viscosity and the activation energy of the prepared compound increase with increases in concentration and decreases with temperature increases. The properties like density and ultrasonic velocity are varied when increases the concentration of the aqueous solutions of Disodium Tartrate. In this study, the values of adiabatic compressibility show an inverse behavior when compared with ultrasonic velocity due to the interaction between solute and solvent molecules. Also observed that the inter-molecular free length is maximum for a lower percentage. The free volume for the compound is maximum at 2% and a minimum of 20%, since it reduces when the internal pressure increases. It was revealed that the classical absorption coefficient and relaxation time for Disodium Tartrate is minimum for lower percentage and minimum for a higher percentage. The interactions between the solute and solvent are confirmed through the property like specific Acoustical impedance. It was noted that the increase in internal pressure increases the concentration of the compound. The ion-solvent interaction was discussed by the relative association study, thus the values of relative association increases with an increase in concentration. The Rao’s and Wada’s constant increases linearly in aqueous solutions of Disodium Tartrate for the entire system.


2018 ◽  
Vol 3 (20) ◽  
pp. 5593-5599 ◽  
Author(s):  
Pramod P. Patil ◽  
Vasim R. Shaikh ◽  
Gaurav R. Gupta ◽  
Pankaj D. Patil ◽  
Amulrao U. Borse ◽  
...  

2019 ◽  
Vol 48 (1) ◽  
pp. 45-60 ◽  
Author(s):  
Pankaj D. Patil ◽  
Vasim R. Shaikh ◽  
Gaurav R. Gupta ◽  
Dilip G. Hundiwale ◽  
Kesharsingh J. Patil

Sign in / Sign up

Export Citation Format

Share Document