Quantification and Removal of Trichloromethane in Chlorinated Water Using Coconut Shell Activated Carbon

  • A. A. Okoya Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria https://orcid.org/0000-0003-2487-4426
  • O. E. Akinola Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria
  • O. S. Adegbaju Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria
  • A. B. Akinyele Institute of Ecology and Environmental Studies, Obafemi Awolowo University, Ile-Ife, Nigeria https://orcid.org/0000-0002-8650-6496
  • O. S. Amuda Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Keywords: Trichloromethane;, coconut shell;, activated carbon, removal efficiency;, adsorbent

Abstract

Commercially, available activated carbon (CAC) and coconut shell activated carbon (CSAC) were used in the adsorption of Trichloromethane (TCM) from disinfected water using the optimum conditions (concentration, dosage, pH and time) obtained. Concentrations of TCM were determined using GC-MS. Physicochemical parameters of CSAC were investigated. The CSAC gave percentage carbon yield (86.72±1.41), surface area 1200 m2/g and CHNS/O Elemental Analyzer gave elemental Carbon of 60.08% as the highest of the elements in the char. A pore structure dispersed on the CSAC surface was observed. Best conditions for CSAC were: 1.4 × 104μg/l TCM, 5.0 pH, 0.8 g absorbent within 30 minutes. The data fitted Freundlich than Langmuir model (R2 of 0.9977 and 0.9232, respectively). Percentage removal of TCM for CAC and CSAC was 98.3±1.55 and 96.7±1.27, respectively for the water sample. Results indicated that CSAC was efficient for removal of TCM present in water and could be used as alternative for CAC in water treatment.

Published
2020-07-31
Section
Articles

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eISSN: 0855-1448