The treatment of municipal wastewater by Chlorella. sorokiniana pa.19 using magnesium-aminoclay nanomaterial

Document Type : Research Article

Authors

1 شهرآرا-خ پاتریس لومومبا-روبروی بانک کشاورزی-ک بلوک بیستم- 6/2

2 Doctor of Philosophy, Department of Environmental Engineering, Faculty of Civil Engineering, Babol Noshirvani University of Technology, 47148-7313 Babol, Iran.

Abstract

Microalgae as unicellular eukaryotic aquatic microorganisms can be used to treat various types of urban and industrial wastewater. Due to the high cost of synthesis of culture medium on an industrial scale, wastewater is used as a cheap and accessible culture medium. Recent advances in the field of nanoengineering have facilitated the application of nanotechnology in wastewater treatment. Nanomaterials engineering, as a relatively new field, has proposed effective solutions for most technical problems for microalgae biodegradation. This research aimed to experimentally investigate the effect of amino-clay-magnesium nanomaterial on the growth of native microalgae Chlorella. sorokiniana pa.19 biomass in the sewage culture medium of Sari city. In this regard, the effect of the concentration of magnesium-amino clay nanomaterial on biomass dry weight, specific growth rate, ammonia, and phosphate removal in an urban sewage culture medium was investigated. X-ray diffraction (XRD) analysis, scanning electron microscopy (FE-SEM) on the nanomaterial, and atomic force microscopy (AFM) analysis was performed on the microalgae. Biomass dry weight values, specific growth rate, ammonia, and phosphate removal efficiency are 16.67, 43.01, 98.33 and 96.87% respectively at 〖28〗^℃, 2800 lux radiation intensity, and 0.2 grams per liter nano magnesium-amino clay material was observed. At a low concentration of magnesium-amino clay nanomaterial, a quantitative and qualitative increase in the biomass of Chlorella. sorokiniana pa.19 microalgae were observed, and at concentrations higher than the optimal dose, it caused a decrease in the growth rate of the species.

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Amirkabir Journal of Civil Engineering
Volume 57, Issue 3
2025
Pages 427-444

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