Potential low-cost carbon-based adsorbent from gold mine tailings for anionic dye removal

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Erturk S., SARI YILMAZ M., PİŞKİN S.

WATER SCIENCE AND TECHNOLOGY, cilt.83, sa.6, ss.1300-1314, 2021 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 83 Sayı: 6
  • Basım Tarihi: 2021
  • Doi Numarası: 10.2166/wst.2021.052
  • Dergi Adı: WATER SCIENCE AND TECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Analytical Abstracts, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chimica, Compendex, EMBASE, Environment Index, Geobase, MEDLINE, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Directory of Open Access Journals
  • Sayfa Sayıları: ss.1300-1314
  • Anahtar Kelimeler: CMK-3, dye adsorption, gold mine tailings, low-cost adsorbent, recycling waste, MESOPOROUS SILICA, ADSORPTION, EQUILIBRIUM, TEMPLATE
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this study, a mesoporous carbon (CMK-3) was successfully synthesized using mesoporous silica (SBA-15) prepared from gold mine tailings (sample C-GMT) for removal of anionic dye from aqueous solution. For comparison, CMK-3 was prepared by the same method from pure silica (sample C-T), and the other CMK-3 sample was prepared by a one-pot route mixing with Pluronic P123 (sample C-P). The effect of the carbonization time on the synthesis of all CMK-3 samples was investigated, and the samples were characterized by X-ray diffraction and N-2 adsorption-desorption. The sample with the highest surface area was chosen as an adsorbent, for each CMK-3 obtained from different methods. Batch adsorption experiments were studied to determine the influence of pH, contact time, and initial dye concentration. The adsorption kinetics obeyed the pseudo-second-order model. All carbon-based adsorbents were observed to be quite effective for the removal of dye with adsorption percentage in the order of C-P > C-T > C-GMT. The maximum adsorption capacities were 188.99 and 204.57 mg center dot g(-1) for C-T and C-GMT, respectively. The comparative results of all carbon-based adsorbents show that C-GMT can be applied as a low-cost alternative to C-T for dye removal.