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- W3042788132 abstract "Modified Palm Kernel Shell Activated Carbon (PKSAC) using silver nanoparticle (Ag-NPs-PKSAC) was investigated on phenol uptake from aqueous solution. Effects of temperature (500-700 °C), time (90-120 min), and alkaline concentration (0.1-0.5 M) were studied on the yield and methylene blue numbers for the synthesis. Effects of initial concentration (100-200 mg/L), agitation (150-250 rpm), contact time (30-120 min), and adsorbent dosage (0.15-0.25 g) were studied in a batch experiment on percentage removal of phenol. The PKS, char, PKSAC and Ag-NPs-PKSAC were characterized using BET, FTIR, SEM, and proximate analyses. The synthesis of PKSAC was optimum at 608 °C, 0.5 M KOH, and carbonization holding time of 60 min. The optimum phenol uptake was 85.64, 90.29 and 91.70% for PKSAC, Ag-NPs-PKSAC, and commercial adsorbent, respectively. The adsorption mechanism of phenol followed the Langmuir isotherm and best described as physio-sorption with pseudo-second-order kinetics. Phenol exhibits high affinity (ΔS° = 0.0079 kJ/mol K) for Ag-NPs-PKSAC with favorable adsorption (ΔG° = -1.551 kJ/mol) at high temperature due to endothermic (ΔH° = 1.072 kJ/mol) nature of the system. The result obtained in this study compared favorably with the literature." @default.
- W3042788132 created "2020-07-23" @default.
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- W3042788132 date "2020-07-01" @default.
- W3042788132 modified "2023-10-16" @default.
- W3042788132 title "Improved phenol sequestration from aqueous solution using silver nanoparticle modified Palm Kernel Shell Activated Carbon" @default.
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- W3042788132 doi "https://doi.org/10.1016/j.heliyon.2020.e04492" @default.
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