Synthesis of highly efficient asphalt-based carbon for adsorption of polycyclic aromatic hydrocarbons and diesel from emulsified aqueous phase

Alissa, Faisal M.; Dauda, Mohammed; Osman, Abdalghaffar Mohammad; Basheer, Chanbasha; Siddiqui, Mohammad Nahid; Al-Arfaj, Abdurrahman A.; Suliman, Munzir H.

doi:10.1007/s42823-020-00126-0

Cited by 5 publications

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“…Adsorption kinetics (pseudo-first-order and pseudo second-order) were investigated for MPC and MMPC for the removal of Sr 2+ and Cs + using Equations ( 1) and (2). Where (qe) is the adsorption capacity at the equilibrium, (qt) is the adsorption capacity at certain time, k the rate of adsorption and t is the time of adsorption.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…Clean water resources are vital to humans, animals, and plants. However, the extensive use of these resources, especially in the industrial process, leads to lower water quality and the availability of clean water [1][2][3]. The wastewater treatment for the removal of organic substances and heavy metals (such as As, Zn, Ni, Cu, Hg, Sr, Cs, and more) is considered as a significant and challenging task [4].…”

Section: Introductionmentioning

confidence: 99%

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Surface Functionalization of Mesoporous Carbon for the Enhanced Removal of Strontium and Cesium Radionuclides

2020

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Mesoporous carbons (MPC) and modified mesoporous carbons (MMPC) were prepared from asphalt for the adsorption of several metal ions from the aqueous solution. In this study, we investigated the adsorption efficiency of Cesium (Cs+) and Strontium (Sr2+) ions using mesoporous and modified mesoporous carbons. The optimum conditions for the removal of Cs+ and Sr2+ were at 10.0 pH, 1.00 ppm (1000.0 µg/L) concentration, 20.0 min contact time, 0.20 g/L adsorbent dose, 25.0 °C temperature with more than 95.0% removal of Cs+ and Sr2+ ions using MMPC. The limit of detection (LOD) was found to be 0.030 ppb and 10.00 ppb for Sr2+ and Cs+ metals ions, respectively, while the Limit of quantification (LOQ) was calculated to be 0.10 ppb for Sr2+ and 35.00 ppb for Cs+ metals ions. The functionalization of the MPC was performed using potassium permanganate to get MMPC, which were characterized by FT-IR spectroscopy. The nature of the X-ray diffraction peaks suggests that the MPC and MMPC carbons are amorphous and semi-crystalline materials. The scanning electron microscope (SEM) and transition electron microscope (TEM) studies showed the changes in the morphology due to the adsorption on the surface of the carbons. The TEM analysis clearly showed that the metal ions blocked most of the pores on the surface. The surface area, by N2 adsorption isotherm (BET), of MPC and MMPC were 937 and 667 m2·g−1, respectively. Among the adsorption isotherms, Langmuir isotherm showed the best linearity. The Langmuir isotherm indicates that the adsorption is monolayer and homogeneous with a finite number of ions. Adsorption kinetics showed better linearity with pseudo-second-order plots and obeys this order. This process indicates that the chemical interaction, such as covalent or ionic bonding, took place between the metal ions and the carbon adsorbents.

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Section: Adsorption Kineticsmentioning

confidence: 99%