Your browser doesn't support javascript.
loading
Simulation study of a practical approach to enhance cadmium removal via biological treatment by controlling the concentration of MLSS.
Nile, Basim K; Faris, Ahmed M; Alesary, Hasan F; Jafar, Nadhir N A; Ismail, Hani K; Abdulredha, Muhammad; Al Juboury, Maad F; Hassan, Waqed H; Ahmed, Luma M; Abid, Hussein Rasool; Barton, Stephen.
Afiliação
  • Nile BK; Engineering College, University of Kerbala, Karbala, 56001, Iraq.
  • Faris AM; Kerbala Sewerage Directorate, Kerbala, 56001, Iraq.
  • Alesary HF; Department of Chemistry, College of Science, University of Kerbala, Karbala, 56001, Iraq. hasan.f@uokerbala.edu.iq.
  • Jafar NNA; Al-Zharaa University for Women/Al-Zharaa Center for Medical and Pharmaceutical Research Sciences, Karbala, Iraq.
  • Ismail HK; Department of Chemistry, Faculty of Science and Health, Koya University, Koya, KOY45, Kurdistan Region-F.R., Iraq.
  • Abdulredha M; Department of Civil Engineering, College of Engineering, University of Kerbala, Kerbala, 56001, Iraq.
  • Al Juboury MF; Department of Civil Engineering, College of Engineering, University of Kerbala, Kerbala, 56001, Iraq.
  • Hassan WH; Department of Civil Engineering, College of Engineering, University of Kerbala, Kerbala, 56001, Iraq.
  • Ahmed LM; University of Warith Al-Anbiyaa, Kerbala, 56001, Iraq.
  • Abid HR; Department of Chemistry, College of Science, University of Kerbala, Karbala, 56001, Iraq.
  • Barton S; Environment Health, Applied Medical Sciences College, University of Kerbala, Karbala, Iraq.
Sci Rep ; 14(1): 1714, 2024 01 19.
Article em En | MEDLINE | ID: mdl-38242994
ABSTRACT
The fate of cadmium at the Muharram Aisha wastewater treatment plant in Karbala governorate, Iraq was studied using the TOXCHEM model. Cadmium, a known carcinogen, and is considered one of the most dangerous heavy metals and high concentrations, greater than permissible limits, were found in the treated wastewater. The plant operates using an activated sludge system and this was modeled via TOXCHEM with a sensitivity analysis carried out on the extended aeration system. Prior to analysis, the model was calibrated and validated for cadmium, with the adjustments leading to a mean square error (RMSE) and correlation coefficient (R) of 0.0001 and 0.81, respectively. The mass balance of cadmium in the Muharram Aisha treatment plant was found to be 4832.44 g/day (37.1726%) in the treated wastewater and 8164.52 g/day (62.804%) in the sludge, which indicated that the mix liquor suspended solid (MLSS) was the most sensitive factor. The sensitivity to cadmium was analyzed via MLSS in the extended aeration system and the results o indicated that the higher the MLSS concentration (mg/L), the greater the removal of cadmium in the treated wastewater. It was found that increasing the MLSS through a biological treatment method reduced the concentration of cadmium without the need for additional of any (potentially harmful) chemical treatments. The plant was subsequently operated for a period of 5 months with the MLSS increased from 1500 to 4500 mg/L, and this reduced the concentration of cadmium in the wastewater from 0.36 to 0.01 mg/L as a consequence. This research demonstrates how the novel application of TOXCHEM can be a useful tool in the reduction of heavy metal contamination in the environment.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Purificação da Água / Metais Pesados Tipo de estudo: Prognostic_studies Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Iraque

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Purificação da Água / Metais Pesados Tipo de estudo: Prognostic_studies Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Iraque