Adsorptive Removal of Phenol from Aqueous Solution by Using Carbon Nanotubes and Magnetic BioChar

Mubarak, Nabisab Mujawar; Sazila, N.; Nizamuddin, Sabzoi; Abdullah, Ezzat Chan; Sahu, J.N.

doi:10.17756/nwj.2017-043

Cited by 15 publications

(1 citation statement)

References 23 publications

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“…Pseudo-first and Pseudo-second order kinetic models. The pseudo first order and second order models are used in this study and both model equations are shown in equations 8 and 9 respectively in the following sections [18].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of Oil from Contaminated Wastewater Using Thermo-Chemically Modified Lignocellulosic Biomass

Ajmi

Hamadani

Yeneneh

et al. 2022

MSF

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The volume of oil-contaminated wastewater generated from petrochemical industries and various oil fields is significant. The discharge of such oily wastewater endangers terrestrial and aquatic ecosystems due to the high organic load and toxicity of the oily components. Currently, there are several technologies available for the treatment of oily wastewater among which adsorption was observed to be a promising technique for the removal of oil emulsions from wastewater. In this study, acid modified and base modified pyrolyzed date seed was investigated for the removal of oil and oil emulsions from contaminated water. The effect of pH in the range of (2-12), temperature (30°C-70°C), date seed dose of (0.1-1 g) and contact time of (1-240 mins) was investigated for both the acid modified and base modified activated date seeds samples. Equilibrium sorption was attained after a contact time of 120 minutes. It was observed that base modified activated date seed resulted in 83% removal of oil. Both acid and base modified activated date seed showed a high percentage removal of 92.9 % and 94.3 % respectively at a lower acidic pH of 2. Concerning the equilibrium sorption kinetics, Pseudo-Second-order kinetic Model showed better fit as compared to pseudo first order kinetic model. Therefore, the adsorption of oily wastewater onto both acid and base modified activated date seeds are consistent with the second-order kinetic model. The Langmuir isotherm was found to be linear with high correlation coefficient values over the entire concentration range, which confirms that the Langmuir isotherm is more accurate to represent sorption by acid modified date seed unlike the case of base modified activated date seed where Freundlich isotherms were found to better fit the adsorption equilibrium data for base modified date seed. Keywords: Pyrolyzed date seeds; chemically modified activated date seeds; thermo-chemically modified lignocellulosic biomass; kinetics; equilibrium isotherms.

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Section: Adsorption Isothermsmentioning

confidence: 99%