Adsorption behaviour of high performance activated carbon from demineralised low rank coal (Rawdon) for methylene blue and phenol

GÖKÇE Y., YAĞLIKÇI S., YAĞMUR E., Banford A., AKTAŞ Z.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, cilt.9, sa.2, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 2
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.jece.2020.104819
  • Dergi Adı: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, CAB Abstracts, Chemical Abstracts Core, Compendex, INSPEC, Veterinary Science Database
  • Anahtar Kelimeler: Activated carbon, Demineralisation, Adsorption performance, Methylene blue, Phenol, VICTORIAN BROWN-COAL, BITUMINOUS COAL, MINERAL MATTER, CHEMICAL ACTIVATION, REAGENT ADSORPTION, TURKISH COALS, KINETICS, REMOVAL, DYES, OPTIMIZATION
  • Ankara Üniversitesi Adresli: Evet

Özet

Activated carbon (AC) was prepared from low rank Rawdon coal by chemical activation. The raw and demineralised coals were employed to produce ACs. The effects of demineralisation on the adsorption capacities of the ACs were determined, using common water pollutants, methylene blue (MB) and phenol as adsorbates. The BET (Brunauer-Emmett-Teller) surface area of the AC obtained from the demineralised sample (1869 m(2) g(-1)) was found to be much higher than those obtained from the raw coal (1059 m(2) g(-1)). Pre-carbonisation also caused an increase in the surface areas of the samples. The adsorption tests were evaluated using Langmuir and Freundlich adsorption models. The ACs were characterised in terms of total surface area, pore and particle size distributions, FTIR (Fourier Transform Infrared Spectroscopy) and XRF (X-ray Fluorescence) analyses. The surface area of the AC produced from the demineralised and pre-carbonised sample was determined as 1951 m(2) g(-1). The adsorption capacity of the same AC reached the highest values for MB (841.93 mg g(-1)) and phenol (549.6 mg g(-1)). The activated carbon produced in the research is an excellent adsorbent compared to other ACs reported in the literature.