Synthesis, Characterization and Adsorption Properties of Low-cost Porous Calcined Dolomite Microspheres for Removal of Dyes

Yan, Shu; Wang, Qinggang; Liu, Jingjing; Huo, Wenlong; Yang, Jinlong; Huang, Yong

doi:10.1007/s11595-019-2080-4

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…From the values of R 2 and the (%) errors, it is apparent that the Langmuir model better described the basic blue-9 adsorption onto quartz surface. A similar result was obtained in previous investigations for natural clay [40], kaolinite [37], and dolomite [13]. The authors found that the Langmuir model described the equilibrium adsorption data well for basic blue-9 adsorption.…”

Section: Adsorption Isothermsupporting

confidence: 89%

“…The adsorption of BB9 dye onto quartz mineral was most likely a pseudo second order process, because it possessed the higher R 2 value according to the results. Similar results have been reported for variuous adsorbent such as: palygorskite [1], dolomite [13], kaolin [22], zeolite [23], diatomite [26], natural clay [40] and pyrophillite [47].…”

Section: Adsorption Kineticssupporting

confidence: 86%

“…For the same sorbent mass of 1.0 gl −1 we reach removal rates around 85% and 42% for particle sizes of 80μm and 100 μm, respectively. The further increase in quartz mass has a great effects on the removal efficiency.This behaviour could be explained by the aggregation of the small quartz particles at high values of adsorbent doses, leading to the decrease in the total sorbent surface available and consequently reducing the encounter probability (dye molecule-quartz site), thus leading of poorer quality retention [13,39,40].…”

Section: Effect Of Quartz Dosementioning

confidence: 99%

“…Adsorption is a successful method for removing dyes from wastewater in terms of efficiency and cost when compared to other traditional remediation method [8,9]. Because commercially available synthetic adsorbents are expensive and difficult to regenerate ,the present conjuncture of wastewater treatement develops the use of natural low-cost materials for color removal like natural minerals without any modification include calcite [10][11][12], dolomite [13], quartz [14] , silicate [15,16], silica quartz sand [17], phosphate [18], palygorskite [19], bentonite [20], montmorillonite [21], kaolin [22], zeolite [23], natural illitic clay [24], sepiolite [25] perlite [26], diatomite [27]. However, to the present day no published study of basic blue-9 (BB9) removal by adsorption onto quartz mineral as natural low-cost adsorbent.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption mechanism of basic blue-9 onto quartz mineral: kinetics, isotherms and thermodynamic

Labidi

Mechati²

2022

Mater. Res. Express

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Adsorption of basic blue-9 (BB9) by natural quartz mineral was tested. The quartz mineral was characterized by FTIR, SEM, DRX, zeta potential and Sear's surface area measurements. The quartz mineral contains 99.13% of SiO2 and has a specific surface area of 0.6 m2g-1. The zeta potential measurements of quartz showed a zero point charge (ZPC) at a pH of 2.12. Adsorption experiments results of basic blue-9 showed an excellent achievement after 15 min, for 100μm sorbent particles seize, 1.0 g/L sorbent mass, pH of 5.0, agitation speed of 200 rpm and Temperature of 60°C. Moreover, the BB9 concentration and temperature were directly related to increase in adsorption capacity and the highest adsorption capacity of 27.78 mg g-1 was achieved for 30 mg L-1 at 60°C. Langmuir isotherm and pseudo-second-order kinetics (R2 > 0.99) were found to be the most appropriate models to describe the removal of metylen blue dye by quartz mineral. The apparent diffusion parametres were estimated to be between 3.24×10-6 and 3.67×10-6 cm2 s-1, indicating an adsorption process controlled by the external mass transfert on the quartz surface. The calculated thermodynamic parameters and Dubinin–Radushkevich adsorption free energy (Eads = 0.28 kJmol-1) showed that adsorption of BB9 onto quartz was spontaneous, endothermic and a physisorption reaction. FTIR spectroscopy and semi empirical RM1 calculations established an adsorption mecanism by electrostatic attraction. The regeneration tests after four runs showed that natural quartz could be an alternative material for cationic dyes removal.

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Section: Adsorption Isothermsupporting

confidence: 89%

Section: Adsorption Kineticssupporting

confidence: 86%

Section: Effect Of Quartz Dosementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption mechanism of basic blue-9 onto quartz mineral: kinetics, isotherms and thermodynamic

Labidi

Mechati²

2022

Mater. Res. Express

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Evaluation and comparison of various methods used for aggregates investigations

Hołysz,

Rek,

Huber

et al. 2023

Adsorption

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Natural aggregates from sedimentary rock, like limestone and dolomite, are of a great use in various practical applications. To evaluate their quality, among others, the test of methylene blue adsorption (MB value) using a filter paper is recommended. However, one can consider it as a rough test. In this paper we wished to evaluate its quality by comparison with a more precise spectrophotometric method, i.e., to perform adsorption isotherms of methylene blue from aqueous solutions, as well as determine other parameters characterizing the aggregates. For this purpose, methylene blue adsorption on samples of limestone and dolomite natural aggregates having various grain sizes were studied to assess quality (fine particles content) of the manufactured aggregates. To determine the amount of adsorbed dye two methods were used: the methylene blue stain test and the dye adsorption from its solutions at various concentrations under static conditions. From the linear form of Langmuir adsorption isotherms of methylene blue, the monolayer capacity was determined, and then the specific surface areas of all fractions of aggregates. The structural (N2 adsorption/desorption), textural (SEM/EDS) and crystallographic structure of the aggregates were studied. It was determined that the MB values for 0–2 and MBF for 0–0.125 mm aggregates fractions fulfill the criteria set out in the specifications required for pavement construction. A very good repeatability of the adsorbed amount of methylene blue on the dolomite and limestone aggregates were obtained by these two different methods. These results confirm the reliability of the method blue test used typically in industrial conditions. The measured specific surface areas of limestone and dolomite using N2 adsorption (SBET) are smaller than SMB determined by methylene blue adsorption from aqueous solutions. This is because in aggregates, apart from calcite and dolomite, there is a small admixture of quartz and clay minerals. During N2 adsorption in dry condition, the external surface of the grains is determined, while in the aqueous solution of methylene blue, both the external and inner surfaces of clay minerals are determined.

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Preparation of Calcium Cross-linked Nano-Fe3O4 Modified Zeolite Microspheres for Cu2+ Adsorption from Wastewater

Wei

Long

Wang³

et al. 2020

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Synthesis, Characterization and Adsorption Properties of Low-cost Porous Calcined Dolomite Microspheres for Removal of Dyes

Cited by 8 publications

References 47 publications

Adsorption mechanism of basic blue-9 onto quartz mineral: kinetics, isotherms and thermodynamic

Adsorption mechanism of basic blue-9 onto quartz mineral: kinetics, isotherms and thermodynamic

Evaluation and comparison of various methods used for aggregates investigations

Preparation of Calcium Cross-linked Nano-Fe3O4 Modified Zeolite Microspheres for Cu2+ Adsorption from Wastewater

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