publication . Article . 2017

Effective Microporosity for Enhanced Adsorption Capacity of Cr (VI) from Dilute Aqueous Solution: Isotherm and Kinetics

Lloyd Mukosha; Maurice S. Onyango; Aoyi Ochieng; John Siame;
Open Access
  • Published: 19 Jun 2017
Abstract
The adsorbent pore structure significant to enhanced adsorption capacity of Cr (VI) from dilute aqueous solution is evaluated. As reference, low-cost micro-mesoporous activated carbon (AC) of high basicity, mesoporosity centred about 2.4 nm, and effective microporosity centred about 0.9 nm was tested for removal of Cr (VI) from dilute aqueous solution in batch mode. At pH 2 the low-cost AC exhibited highly improved Langmuir Cr (VI) capacity of 115 mg/g which was competitive to high performance commercial AC. A Comparison with treated characterization results of literature adsorbents/ACs showed that moderate to high effective micropore volume of average pore-size...
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free text keywords: Cr (VI) adsorption, dilute solution, properties adsorbent, micro-mesoporous, effective microporosity, Adsorption, Chemistry, Aqueous solution, Inorganic chemistry, Kinetics
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