Determination of parameters affecting kinetic and thermodynamic values for lead removal using wastewater treatment plant sewage sludge ash

İrdemez Ş., Yeşilyurt D., Kul S., Ekmekyapar Torun F.

BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA, cilt.36, sa.4, ss.935-948, 2022 (SCI-Expanded)

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.4314/bcse.v36i4.18
  • Dergi Adı: BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, CAB Abstracts, Veterinary Science Database, Directory of Open Access Journals
  • Sayfa Sayıları: ss.935-948
  • Atatürk Üniversitesi Adresli: Evet

Özet

In this study, treatment of lead containing wastewater using sewage sludge ash obtained from the

incineration unit in the domestic wastewater treatment plant in Gaziantep province in Turkey was investigated. The

main purpose of the study is to determine the potential of using the treatment sludge ash, which comes out as waste

in the treatment plant, in the treatment of wastewater of another industry. As a result of this study, the most suitable

adsorption conditions were determined and focused on the kinetics of adsorption. In the experiments, the lead

adsorption capacity of sewage sludge ash was determined as 122 mg g-1 at 0.5 g L-1 adsorbent concentration in

wastewater containing 100 mg L-1 Pb2+ under optimum conditions. As a result of the research, it was determined that

the adsorption reaction proceeds according to the pseudo second degree reaction and is suitable for the Langmuir

isotherm. As thermodynamic constants, ΔH° = 7.407 kJ mol-1 and ΔS° = 33.25 J mol-1 were determined. As a result

of this, it was determined that the adsorption reaction was endothermic, spontaneous and random, and adsorption

was physical adsorption. The results show that sewage sludge ash can be used in the treatment of water containing

high concentrations of Pb2+.