Assessment of Greywater Treatment Efficiency Using of Surface Adsorption with Iron oxide nanoparticles

Govahi, Saeid; Derikvand, Ehsan; khoshnavaz, Saeb; Solimani Babarsad, Mohsen; Parseh, Iman

Volume 13, Issue 2 (7-2025) J Environ Health Eng 2025, 13(2): 189-203 | Back to browse issues page

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Govahi S, Derikvand E, khoshnavaz S, Solimani Babarsad M, Parseh I. Assessment of Greywater Treatment Efficiency Using of Surface Adsorption with Iron oxide nanoparticles. J Environ Health Eng 2025; 13 (2) :189-203
URL: http://jehe.abzums.ac.ir/article-1-1106-en.html

Assessment of Greywater Treatment Efficiency Using of Surface Adsorption with Iron oxide nanoparticles

Saeid Govahi

, Ehsan Derikvand ^*

, Saeb Khoshnavaz

, Mohsen Solimani Babarsad

, Iman Parseh

Research Center for Water Science and Environmental, Department of Water Sciences, Sho.C., Islamic Azad University, Shoushtar, Iran , Ehsan.Derikvand@iau.ac.ir

Abstract: (31 Views)

Background: In recent years, the management and treatment of greywater have become critical environmental challenges due to the presence of non-biodegradable pollutants that conventional wastewater treatment methods fail to fully remove. This study aims to evaluate the efficiency of a hybrid approach combining adsorption using iron oxide nanoparticles (Fe₃O₄) and advanced chemical oxidation with UV/H₂O₂ for greywater treatment.
Materials and Methods: Greywater samples were first treated with Fe₃O₄ nanoparticles under optimized conditions: pH=5, contact time of 40 minutes, and adsorbent dosage of 1.2 g/L. Subsequently, UV/H₂O₂ oxidation was applied to enhance removal efficiency.
Results: Adsorption alone achieved removal efficiencies of 57% for COD, 36% for BOD, 7.5% for TKN, and 60% for TP. Following UV/H₂O₂ oxidation, COD removal increased to over 93%, reducing residual COD to 12.1 mg/L. The process showed optimal performance at lower pH levels 4 to 5, while H₂O₂ concentrations up to 7 mM improved oxidation efficiency without significant enhancement beyond this level.
Conclusion: The integration of physical adsorption and advanced oxidation not only overcomes the limitations of conventional methods but also meets environmental discharge standards. With high efficiency and relatively low operational costs, this dual-stage method offers a sustainable solution for greywater management in urban and industrial settings.

Keywords: greywater, hydrogen peroxide, ultraviolet, treatment, oxidation, SBR

Full-Text [PDF 541 kb] (24 Downloads)

Type of Study: Research | Subject: Special
Received: 2025/03/13 | Accepted: 2025/06/7 | Published: 2025/07/16

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