الفهرس 
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Abstract
The main goal of this work was to inquire the phenol and copper adsorption performances of functionalized multi-walled carbon nanotubes (F-MWCNTs) and Zn/Al LDH intercalated with carbonate (CO3)2- as interlayer anion.
Adsorbents were characterized by FTIR, XRD, SEM, TGA, DSC, and DLS in order to verify the functional groups and surface morphology.
Batch adsorption studies were performed to reach the highest removal rates for copper and phenol adsorption. Kinetic modeling revealed the rate determining step of the adsorption process and adsorption isotherm models were applied to further understand the adsorption process.
The data and results of this study can be briefed as below:
A) For FMWCNTs :
The optimum condition for the adsorption of phenol and copper was 120 & 60 min for contact time, 300 & 10 mg/L for adsorbent dosage, 7&6 pH, and 25 mg/L for organic and metal ion concentration with removal efficiency 79.26% & 68.19% in case of phenol and copper in order.
The adsorption equilibrium data found to be in good agreement with the Langmuir adsorption isotherm with maximum adsorption capacity of 956.05 & 384.3 3mg/g while the adsorption kinetic data was well witted and in good agreement with the pseudo-second -order kinetic model with high correlation coefficient (R2) value for both phenol and copper respectively.
B) Zn/Al LDH :.
The optimum condition for the adsorption of phenol and copper was 60 min for contact time, 1000 & 200 mg/L for adsorbent
Conclusion
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dosage, 6 pH, and10 &25 mg/ L for initial metal ion concentration and the removal efficiency was found to be 45.69& 68.19% in case of phenol and copper in order.
The adsorption equilibrium data found to be in good agreement with the Langmuir adsorption isotherm with maximum adsorption capacity of 42.37 mg/g and 23.95 mg/g for phenol and copper respectively while the adsorption kinetic data was well fitted and in good agreement with the pseudo-second-order kinetic model with high correlation coefficient (R2) value for both phenol and copper .
The adsorbents (FMWCNTs and Zn-Al LDH) could be recycled for 3 adsorption-desorption cycles by desorption of phenol and copper using 0.01M NaOH and HNO3 respectively.
Hence it can be concluded that the prepared adsorbents (FMWCNTs and Zn-Al LDH) could be considered as a promising absorbent for water treatment or environmental management in terms of high efficiency and feasibility.