Kinetic and thermodynamic study for the removal of cadmium (II) ions from aqueous media by Aucoumea klaineana sawdust

2021 ◽  
Vol 209 ◽  
pp. 447-453
Author(s):  
El-Khamssa Guechi ◽  
Oualid Hamdaoui ◽  
Soulef Benabdesselam
Keyword(s):  
Aqueous Media ◽  
Thermodynamic Study ◽  
Kinetic And Thermodynamic Study ◽  
Aucoumea Klaineana

scholarly journals Preparation of CoFe2O4@Carboxymethylcellulose/HZSM-5 as a Novel Nano Magnetic Adsorbent for Metronidazole Removal: Isotherm, Kinetic and Thermodynamic Study

2021 ◽  
Author(s):  
Alireza Nasiri ◽  
Mohammad Reza Heidari ◽  
Neda Javid ◽  
Ghazal Yazdanpanah
Keyword(s):  
Chemical Structure ◽  
Adsorption Process ◽  
Aqueous Media ◽  
Freundlich Isotherm ◽  
Thermodynamic Study ◽  
Order Kinetic ◽  
Endothermic Process ◽  
Physical And Chemical ◽  
Green Conditions ◽  
Kinetic And Thermodynamic Study

Abstract In this research CoFe2O4@CMC/ HZSM-5 synthesized in the presence of Carboxymethylcellulose as a biopolymer in the green conditions as a new nanomagnetic adsorbent for metronidazole removal from aqueous media. Physical and chemical structure of adsorbent was investigated by FTIR, FESEM, EDS, Mapping, TEM, XRD, VSM, BET and TGA techniques. The results indicated that 94% of the metronidazole concentration removed by CoFe2O4@CMC/HZSM-5 in the optimal conditions including pH 6, temperature 20oC, metronidazole concentration 50 mg/L, contact time 60 min and adsorbent dose 2 g/L. The resulting data from adsorption experimental experiments had better correlated with the Freundlich isotherm and pseudo-second order kinetic. Also, the thermodynamic study demonstrated that the adsorption process was an endothermic process and had a physical mechanism. As well as, the achieved findings demonstrated that following six adsorption runs, the adsorbent chemical structure had no change and the nanomagnetic adsorbent efficiency in the removal process had a slight decrease. CoFe2O4@CMC/HZSM-5 magnetic nanocomposite had effective adsorption capacity for metronidazole removal.

scholarly journals Synergistic effect of the co-pyrolysis of cardboard and polyethylene: A kinetic and thermodynamic study

Energy ◽  
2021 ◽  
Vol 229 ◽  
pp. 120693
Author(s):  
Yuming Wen ◽  
Ilman Nuran Zaini ◽  
Shule Wang ◽  
Wangzhong Mu ◽  
Pär Göran Jönsson ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Thermodynamic Study ◽  
Kinetic And Thermodynamic Study

New Process for Etherification of Glycerol with Isobutene

2015 ◽  
Vol 737 ◽  
pp. 33-37 ◽  
Author(s):  
Jing Jun Liu ◽  
Yong Yuan ◽  
Hang Zhang ◽  
Bo Lun Yang
Keyword(s):  
Distillation Column ◽  
Product Yield ◽  
Thermodynamic Study ◽  
Stirred Tank ◽  
Continuous Stirred Tank Reactor ◽  
Stirred Tank Reactor ◽  
Tank Reactor ◽  
New Process ◽  
Continuous Stirred Tank ◽  
Kinetic And Thermodynamic Study

A process was designed for etherification of glycerol with isobutene based on latest results of kinetic and thermodynamic study. A continuous stirred tank reactor was employed to carry out the reaction. Fresh glycerol was used to extract mono-ethers (ME) of glycerol in the reaction product and then returned to the reactor. Residual glycerol and ME were recovered by water washing and distillation. Isobutene and isobutene dimers were separated from high-ethers in a side draw distillation column. The new process was optimized, and a product yield of 97 wt% was obtained.

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