Abstract
The objective of this work was to use kaolin as an adsorbent for synthetic effluent, based on the reactive blue dye BF-5G. Several analytical techniques were used to investigate the material's crystallinity, morphology, specific surface area and fundamental functional group of kaolin. In sequence, different pH values were studied using a finite bath system. In investigating the influence of pH, the adsorbent used showed superior performance at a pH value equal to 1. From this optimal value, kinetic studies were carried out with the ideal conditions of pH, concentration and adsorbents (pH = 1, C0 = 50 mg/L and kaolin used as adsorbent). The adsorption percentage is maximum at pH 1 and decreases with the basic strength of the dye solution.
Highlights
Environmental pollution is a major threat to human life
According to the X-ray diffractograms, it can observe that kaolin (Figure 2) consists essentially of kaolinite clay mineral
The presence of kaolinite in kaolin was confirmed by characteristic reflections at 2θ = 12.41, 20.21 and 25.49 °, the first and last intense and well defined (Moore & Reynolds, 1989; Ahmed et al, 2016)
Summary
Environmental pollution is a major threat to human life. Among the different types of pollution, wastewater flow is a major problem due to the large amount of water used in our daily life. Wastewater printing and dyeing is a considerable source of environmental contamination and discoloration is the main problem. As a traditional organic dye, the presence of methylene blue (MB) in discharged water is hazardous to humans (Gao et al, 2009; Medri et al, 2020). MB causes harmful effects to human health, such as nausea, vomiting, increased heart rate and eye / skin irritation. The discharge of untreated synthetic dyes in aqueous media is one of the most important environmental problems due to its risks to aquatic life and human health (Jawad et al, 2020; Meigoli Boushehrian, Esmaeili & Foroutan, 2020)
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