Immobilized Mucor plumbeus on sepiolite support: A potential decolorization agent suitable for batch and continuous mode water treatment

Akar T., Kurşunlu G., Çelik S., Akar S.

Journal of Cleaner Production, cilt.294, 2021 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 294
  • Basım Tarihi: 2021
  • Doi Numarası: 10.1016/j.jclepro.2021.126283
  • Dergi Adı: Journal of Cleaner Production
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Business Source Elite, Business Source Premier, CAB Abstracts, Communication Abstracts, INSPEC, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Anahtar Kelimeler: Immobilization, Methyl violet, Mucor plumbeus, Sepiolite, Sorption dynamics, METHYLENE-BLUE BIOSORPTION, AQUEOUS-SOLUTION, ADSORPTION-ISOTHERMS, EFFICIENT REMOVAL, DYE BIOSORPTION, REACTIVE DYE, VIOLET DYES, TEXTILE DYE, LEAD II, SORPTION
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

© 2021 Elsevier LtdThis study was focused on the design of a new and effective decolorization agent by immobilization of Mucor plumbeus cells on the sepiolite matrix (MPSP). The passive immobilization method was used to attach the microbial cells to sepiolite. Methyl violet (MV) decolorization performance of this immobilized material was examined through batch and dynamic flow sorption studies. Biosorption of MV onto MPSP was characterized by using IR, SEM, EDX, and zeta potential analysis. MPSP achieved 89.60% decolorization performance under the optimum batch conditions. Langmuir isotherm model was found as the best-fitted model for the equilibrium data of MV biosorption. The highest monolayer sorption capacity of MPSP was 187.76 mg g−1. Sorption kinetics followed the pseudo-second-order model and the highest rate constant was recorded as 2.56 × 10−4 g mg−1 min−1 at 45 °C. Gibbs free energy (ΔG°) changed from −24.269 to −26.257 kJ mol−1 when the temperature was increased from 15 to 45 °C. Decolorization was identified as exothermic in nature (ΔH° = −5.176 kJ mol−1) and sorption reaction was accompanied by an increase in entropy (ΔS° = 0.066 kJ K−1 mol−1). IR analysis indicated that –OH and –C[dbnd]O groups played a role in the sorption. Fixed bed MPSP column showed almost 100% decolorization yield, good regeneration, and reusability potential. Although there are several studies conducted on the preparation of immobilized sorbent materials, this is the first study of the combined action of sepiolite and M.plumbeus cells for sorption purposes.