Biosorption of 2,4 dichlorophenol (2,4-DCP) onto Posidonia oceanica (L.) seagrass in a batch system: Equilibrium and kinetic modeling

2011 ◽  
Vol 99 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Ahmet Demirak ◽  
Ömer Dalman ◽  
Ezel Tilkan ◽  
Dilek Yıldız ◽  
Evşen Yavuz ◽  
...  
Keyword(s):  
Kinetic Modeling ◽  
Posidonia Oceanica ◽  
Batch System ◽  
System Equilibrium

scholarly journals Kinetic and equilibrium studies of biosorption of M(II) (M = Cu, Pb, Ni, Zn and Cd) onto seaweed Posidonia oceanica fibers

2019 ◽  
Vol 9 (8) ◽  
Author(s):  
Wassila Boulaiche ◽  
Badreddine Belhamdi ◽  
Boualem Hamdi ◽  
Mohamed Trari
Keyword(s):  
Posidonia Oceanica ◽  
Second Order ◽  
Order Model ◽  
Equilibrium Studies ◽  
First Order ◽  
Metal Biosorption ◽  
Batch System ◽  
Adsorption Data ◽  
Equilibrium Data ◽  
Pseudo Second Order

Abstract This work reports the application of Posidonia oceanica for the elimination of heavy metals M(II) (M = Zn, Cd, Ni, Cu and Pb) by biosorption in batch system. The effect of the contact time, initial M concentration, pH and temperature was considered. The kinetic and equilibrium models for the M-biosorption were tested namely the pseudo-first-order, pseudo-second-order and Elovich kinetic models. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherms models have also been used to fit equilibrium adsorption data. The adsorption kinetics follow a pseudo-second-order model for all studied systems, and the equilibrium data are suitably fitted by the above models. The amount of adsorbed metals by biosorption is 48.33, 43.9, 41.02, 37.90 and 30.22 mg/g for Pb(II), Cu(II), Ni(II), Zn(II) and Cd(II), respectively. The thermodynamic parameters suggested that the metal biosorption is spontaneous with an endothermic nature.

scholarly journals Impact of NaOH- surface treatment on emerging pollutant biosorption performance using marine algua, Posidonia Oceanica

2021 ◽  
Keyword(s):  
Fourier Transforms ◽  
Freundlich Isotherm ◽  
Posidonia Oceanica ◽  
Isotherm Models ◽  
Solution Ph ◽  
Batch System ◽  
Emerging Pollutant ◽  
Marine Biomass ◽  
Pseudo Second Order

<p>In the present investigation, marine biomass (Posidonia Oceanica) (PO), in both its unmodified PO and basic-modified (Na-PO) forms, was studied for its possible utilisation as a cheap biosorbent for the retention of amoxicillin (AMX). Biosorption studies were carried out in a batch system and the effects of solution pH, biosorbent dose, initial AMX concentration, contact time and temperature were studied in detail. Characterization of the biosorbent was performed using Fourier transforms infra-red spectroscopy (FTIR) and pHPZC. The biosorption of AMX was adjusted by Langmuir and Freundlich isotherm models, equilibrium isotherms were applicable with maximum monolayer biosorption capacity of 51.33 mg g-1 and 75.33 mg g-1 for PO and Na-PO, respectively. Kinetics investigations showed that both biosorbents followed the pseudo-second order. Thermodynamics studies indicated that the biosorption of AMX onto PO and Na-PO was spontaneous and endothermic in nature. These results proved that chemical modification of Posidonia Oceanica surface improved the biosorption properties of AMX.</p>

A Promising Energetic Polymer from Posidonia oceanica Brown Algae: Synthesis, Characterization, and Kinetic Modeling

2019 ◽  
Vol 220 (22) ◽  
pp. 1900358 ◽  
Author(s):  
Ahmed Fouzi Tarchoun ◽  
Djalal Trache ◽  
Thomas M. Klapötke ◽  
Salim Chelouche ◽  
Mehdi Derradji ◽  
...  
Keyword(s):  
Kinetic Modeling ◽  
Brown Algae ◽  
Posidonia Oceanica ◽  
Energetic Polymer

Allene oxidation in jet-stirred reactor : a kinetic modeling study

1990 ◽  
Vol 87 ◽  
pp. 1159-1172 ◽  
Author(s):  
P Dagaut ◽  
M Cathonnet ◽  
B Aboussi ◽  
JC Boettner
Keyword(s):  
Kinetic Modeling ◽  
Stirred Reactor ◽  
Allene Oxidation ◽  
Modeling Study

Estimation and Kinetic Modeling of Human Arm using Wearable Robot Arm

2016 ◽  
Vol 136 (4) ◽  
pp. 254-262 ◽  
Author(s):  
Takahiro Yamazaki ◽  
Sho Sakaino ◽  
Toshiaki Tsuji
Keyword(s):  
Kinetic Modeling ◽  
Robot Arm ◽  
Wearable Robot ◽  
Human Arm
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