2017
DOI: 10.5004/dwt.2017.1809
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Removal of lead, copper and cadmium ions from aqueous solution using raw and thermally modified diatomite

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Cited by 10 publications
(5 citation statements)
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“…Since the E value is lower than 8 kJ•mol −1 in the Dubinin-Radushkevich (D-R) model, the adsorption process is physical. Since adsorption enthalpy values are less than 40 kJ•mol −1 in all cases studied, the fact that the sorption process is regulated by a physical rather than a chemical mechanism is confirmed [62]. It has been demonstrated that the adsorption process is endothermic, occurring physically and spontaneously.…”
Section: Discussionmentioning
confidence: 58%
“…Since the E value is lower than 8 kJ•mol −1 in the Dubinin-Radushkevich (D-R) model, the adsorption process is physical. Since adsorption enthalpy values are less than 40 kJ•mol −1 in all cases studied, the fact that the sorption process is regulated by a physical rather than a chemical mechanism is confirmed [62]. It has been demonstrated that the adsorption process is endothermic, occurring physically and spontaneously.…”
Section: Discussionmentioning
confidence: 58%
“…As a siliceous rock composed largely of diatoms, diatomite has a unique combination of physical and chemical properties that make it applicable as an adsorbent for the removal of heavy metals and organic pollutants from wastewater and as a filtration medium in several industrial uses [3,[5][6][7]. Due to its high permeability and porosity, as well as its chemical inertness, many studies have addressed the application of diatomite as a low-cost adsorbent for dye and metal ion removal [8][9][10][11]. In the existing work, diatomite-based materials have been applied either for the removal of a dye (anionic or cationic) or metal ions, but never for both types of compounds.…”
Section: Introductionmentioning
confidence: 99%
“…Usually, natural diatomite contains impurity of the mineral and organic compounds that block the pores and diminish its absorption capacity. Therefore, it is necessary to remove the impurities from diatomite (pores) by chemical and/or thermal treatment [3][4][5][7][8][9][10]. For chemical treatment acid agents/activators (sulfuric acid, hydrochloric acid, phosphorous acid, etc.)…”
Section: Introductionmentioning
confidence: 99%
“…Adsorption is the most widely used method with practical, economical, and recyclable properties. Industrial raw materials are widely used for adsorption applications [13], [14]. The main reason for this is the cheaper cost of industrial raw materials compared to production adsorbents and the financial contribution to the region [15], [16].…”
Section: Introductionmentioning
confidence: 99%