Enhanced adsorption of molybdenum(VI) onto drinking water treatment residues modified by thermal treatment and acid activation

Lian, Jing; Zhou, Fan-jie; Chen, Bin; Yang, Mei; Wang, Shisheng; Liu, Zailiang; Niu, Siping

doi:10.1016/j.jclepro.2019.118719

Cited by 61 publications

(28 citation statements)

References 49 publications

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“…However, the value of ∆G 0 has little change with the temperature, revealing that the temperature has a small effect on the reaction. All ∆G 0 values are less than −10 kJ/mol, suggesting that chemistry adsorption is one of the mechanisms of MB adsorption process [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

“…The correlation coefficient (R 2 ) for pseudo-second-order kinetic model is more than 0.99, whereas those for the pseudo first-order are within the ranged of 0.9667–0.9922, suggesting that pseudo-second-order is a better model to analyze the experimental data in the linearized form ( Figure 9 c,d) than the pseudo-first-order kinetic model. Accordingly, the adsorption rate determining step is suggested to be chemical adsorption by sharing or exchanging electrons between adsorbate and adsorbent [ 34 ].…”

Section: Resultsmentioning

confidence: 99%

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In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

Liu

Xia

et al. 2020

Materials

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The work reports a novel strategy for combining polymers and metal–organic frameworks (MOFs) into composites for adsorption applications. Calcium silicate (CaSiO3) was introduced into acrylonitrile butadiene styrene/thermoplastic polyurethane (ABS/TPU) alloy, and the CaSiO3/ABS/TPU skeleton was fabricated by 3D printing technology. The Ca-MOF was directly loaded on the surface of acetone-etched 3D skeleton by in-situ growth method. The obtained 3D skeleton was characterized and the performance of methylene blue (MB) adsorption was determined. It is clear that Ca-MOF is successfully loaded on the surface of 3D skeleton due to the presence of CaSiO3. The MB adsorption ratios of the solutions with initial concentrations of 50, 100 and 200 mg/L at the equilibrium time (5 h) are 88%, 88% and 80%, respectively, revealing good MB adsorption performance of the 3D skeleton. The MB adsorption ratio remains 70% at six runs of adsorption–desorption experiment, indicating the excellent recovering property of the skeleton. The results show that the prepared CaSiO3/ABS/TPU 3D skeleton is a candidate adsorbent for printing and dyeing effluent treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

Liu

Xia

et al. 2020

Materials

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“…Molybdenum is one of the active transition elements with the biological application as well as used in industry [1]. It is a vital nutrient for both humans and plants.…”

Section: Introductionmentioning

confidence: 99%

“…Molybdenum is one of the active transition elements with the biological application as well as used in industry. 1 It is a vital nutrient for both humans and plants. In plants, it is indispensable to fix atmospheric nitrogen and convert nitrate into nitrite, while in humans it is needed for removing toxins and activating enzymes.…”

Section: Introductionmentioning

confidence: 99%

Removal of molybdenum from wastewater using modified amino‐functional framework: A study of the adsorption properties

Saghian

Dehghanpour

Sharbatdaran

2022

Env Prog and Sustain Energy

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Herein, we have employed a convenient method to study kinetic and thermodynamic parameters of the adsorption of molybdenum from wastewater by using modified Zr-based metal-organic frameworks, UIO-66-NH2-X, as adsorbents. The frameworks were fabricated with a simple and fast method from terephthalic acids and Zirconium metal ions and modified via introduction of aldehyde groups using imine condensation. This is the first report in which MOFs have been utilized as adsorbents in molybdenum adsorption. The prepared adsorbents show high adsorption efficiency which is representative of an improvement compared to other literature. The experimental adsorption data could be well interpreted with the pseudo-second-order kinetics and the Langmuir isotherm model. Thermodynamic studies illustrated an exothermic spontaneous mechanism for the adsorption process.

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“…Nowadays, many methods have been applied to metal removal, including coprecipitation, ion exchange, membrane separation and adsorption [9] , among which the adsorption of nano-materials has been considered as an efficient treatment method. But for now molybdenum removal studies are few, so it is urgent to prepare a kind of nano-adsorbed material to degrade excess molybdenum in water.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of molybdenum (VI) in contaminated water using Fe₃O₄/CTS magnetic nanoparticles

et al. 2020

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To solve the problem of excess molybdenum, a new composite nanomaterial was prepared for adsorption and removal of Mo (VI). Chitosan-modified magnetic nanoparticles (Fe3O4/CTS) were prepared by the method of glutaraldehyde crosslinking. The morphology of the composite nanoparticles was characterized by a scanning electron microscope, and the magnetic properties of the nanoparticles were characterized by an external magnetic field. The content of Mo (VI) was determined by thiocyanate spectrophotometry. The relationship between adsorbent dosage, oscillation velocity, contact time and removal of Mo (VI) was studied. The results showed that when the dosage of Fe3O4/CTS magnetic nanoparticles was 0.4 g, the oscillation speed was 100 r min-1, and the contact time was 10 min, 100 ml of Mo (VI) solution was treated under the condition of initial pH =4, and the removal effect of Fe3O4/CTS magnetic nanoparticles on Mo (VI) was the best. Treatment effluent can reach the comprehensive sewage discharge standard in Liaoning Province. At the same time, it is proved that Fe3O4/CTS magnetic nanoparticles are a kind of adsorbent which is easy to recover, easy to separate magnetically, and has the ability to remove Mo (VI) efficiently.

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Enhanced adsorption of molybdenum(VI) onto drinking water treatment residues modified by thermal treatment and acid activation

Cited by 61 publications

References 49 publications

In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

Removal of molybdenum from wastewater using modified amino‐functional framework: A study of the adsorption properties

Adsorption of molybdenum (VI) in contaminated water using Fe₃O₄/CTS magnetic nanoparticles

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Enhanced adsorption of molybdenum(VI) onto drinking water treatment residues modified by thermal treatment and acid activation

Cited by 61 publications

References 49 publications

In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

In Situ Growth of Ca2+-Based Metal–Organic Framework on CaSiO3/ABS/TPU 3D Skeleton for Methylene Blue Removal

Removal of molybdenum from wastewater using modified amino‐functional framework: A study of the adsorption properties

Adsorption of molybdenum (VI) in contaminated water using Fe3O4/CTS magnetic nanoparticles

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Adsorption of molybdenum (VI) in contaminated water using Fe₃O₄/CTS magnetic nanoparticles