Zero-valent iron nanoparticles for methylene blue removal from aqueous solutions and textile wastewater treatment, with cost estimation

Ahmed Hamdy, Mohamed K. Mostafa, Mahmoud Nasr

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Nanoscale zero-valent iron (nZVI) particles were investigated for the removal of methylene blue (MB) from aqueous solutions and the treatment of textile industry effluents. The nZVI material was characterized by XRD, TEM, EDS, FTIR, and SEM. It was demonstrated that several functional groups such as C-H, C 1/4 C, C-C, and C-O contributed to MB reduction. At initial MB concentration of 70 mg/L, the optimum pH was 6, achieving a removal efficiency of 72.1% using an nZVI dosage of 10 g/L, stirring rate of 150 rpm, and temperature of 30 oC within 30 min. The adsorption isotherm was described by the Langmuir model with monolayer coverage of 5.53 mg/g, and the Freundlich equation with multilayer adsorption capacity of 1.59 (mg/g).(L/mg) 1/n. The removal mechanisms of MB included reduction into colorless leuco-MB, precipitation as Fe(II)-MB, adsorption as ZVI-MB or FeOOH-MB, and/or degradation using OH radicals. The synthesized nZVI particles were applied to reduce various organic and inorganic compounds, as well as heavy metal ions from real textile wastewater samples. The removal efficiencies of COD, BOD, TN, TP, Cu2+, Zn2+, and Pb2+ reached up to 91.9%, 87.5%, 65.2%, 78.1%, 100.0%, 29.6%, and 99.0%, respectively. The treatment cost of 1 m3 of textile wastewater was estimated as 1.66 $USD.

Original languageEnglish
Pages (from-to)367-378
Number of pages12
JournalWater Science and Technology
Volume78
Issue number2
DOIs
Publication statusPublished - 13 Aug 2018

Fingerprint

Wastewater treatment
Textiles
aqueous solution
Iron
Nanoparticles
adsorption
cost
Costs
Wastewater
Adsorption
wastewater
Inorganic compounds
inorganic compound
Biochemical oxygen demand
textile industry
Textile industry
Heavy ions
Adsorption isotherms
Organic compounds
Functional groups

Keywords

  • Adsorption
  • Characterization
  • Langmuir and Freundlich
  • NZVI nanoparticles
  • Textile dye effluent
  • Treatment cost

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Zero-valent iron nanoparticles for methylene blue removal from aqueous solutions and textile wastewater treatment, with cost estimation. / Hamdy, Ahmed; Mostafa, Mohamed K.; Nasr, Mahmoud.

In: Water Science and Technology, Vol. 78, No. 2, 13.08.2018, p. 367-378.

Research output: Contribution to journalArticle

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