Significantly improving trace thallium removal from surface waters during coagulation enhanced by nanosized manganese dioxide

Huangfu, Xiaoliu; Ma, Che; Ma, Jun; He, Qiang; Yang, Chun; Jiang, Jin; Wang, Yaan; Wu, Zhengsong

doi:10.1016/j.chemosphere.2016.10.054

Cited by 45 publications

(20 citation statements)

References 46 publications

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“…Coagulation processes are widely used in water and wastewater treatment for the removal of colloidal particles, phosphorus, heavy metals, and organic matter due to their simplicity, cost-efficiency, and upgradeability (Ibarra-Rodríguez et al, 2017;Su et al, 2017;Liu et al, 2019). Aggregating colloids into large flocs in the coagulation process is generally susceptible to the fluctuation of operating conditions, which may lead to elevated concentrations of residual metal ions in treated water (Xu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Magnetic seeding coagulation: Effect of Al species and magnetic particles on coagulation efficiency, residual Al, and floc properties

Zhang

et al. 2021

Chemosphere

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Section: Introductionmentioning

confidence: 99%

Magnetic seeding coagulation: Effect of Al species and magnetic particles on coagulation efficiency, residual Al, and floc properties

Zhang

et al. 2021

Chemosphere

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“…Catalytic activity of manganese and a relatively large surface area of nanoparticles (compared to bulk form) makes manganese oxide NPs a good candidate as a soil remediation agent. Effective decontamination was reported, e.g., for arsenic, selenium, thallium, cadmium, and lead species in the soil [ 10 , 11 , 12 , 13 ]. MnO 2 was proven to remediate soil and water contaminated with toxic dyes, released as industrial waste [ 14 , 15 ] and estradiol, an endocrine disruptor chemical harmful to human and aquatic fauna [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Applications and Biological Activity of Nanoparticles of Manganese and Manganese Oxides in In Vitro and In Vivo Models

et al. 2021

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The expanding applications of nanotechnology seem to be a response to many technological, environmental, and medical challenges. The unique properties of nanoparticles allow for developing new technologies and therapies. Among many investigated compounds is manganese and its oxides, which in the form of nanoparticles, could be a promising alternative for gadolinium-based contrast agents used in diagnostic imaging. Manganese, which is essential for living organisms as an enzyme cofactor, under excessive exposure—for example, due to water contamination or as an occupational hazard for welders—can lead to neurological disorders, including manganism—a condition similar to Parkinson’s disease. This review attempts to summarise the available literature data on the potential applications of manganese and manganese oxide nanoparticles and their biological activity. Some of the published studies, both in vitro and in vivo, show negative effects of exposure to manganese, mainly on the nervous system, whereas other data suggest that it is possible to develop functionalised nanoparticles with negligible toxicity and novel promising properties.

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“…[17] Annually, the total amount of Tl discharged to the atmosphere by human activities is approximately 500-1000 t in China alone. [18,19] Nevertheless, despite this considerable pollution, few studies have addressed atmospheric Tl pollution control, with the removal of Tl in the liquid phase receiving considerable attention in the past 10 years. Specifically, activated carbon (AC), clay, and Al 2 O 3 have been used as adsorbents to remove Tl from drinking water, [20] and MnO x compounds have been employed as catalytic oxidants in Tl-rich aquatic environments.…”

Section: Introductionmentioning

confidence: 99%

Efficient removal of thallium from flow gas using manganite‐based catalysts by gas–solid‐phase catalytic oxidation at low temperature

Ning

Wang

et al. 2020

Applied Organom Chemis

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Thallium (Tl) is a highly toxic heavy metal, for which its removal from aqueous environments has gained increasing attention. However, removal of Tl from the gas phase is yet to be addressed, especially at low temperature. Herein, we synthesized and characterized a manganite‐based active carbon (Mn–AC) catalyst via an impregnation method process. The Mn–Ac catalyst was then used for elemental Tl removal from simulated flow gas in a laboratory‐scale fixed‐bed reactor. Tl(I) was adsorbed by the AC and oxidized by active Mn, resulting in Tl(III). In addition, experiments were performed at varying temperatures and different Mn dosages to evaluate the efficiency of Tl removal in various conditions. The Mn–AC catalysts were shown to oxidize Tl(I) to Tl(III) on their surface with Tl removal efficiency decreasing with increasing temperature, reaching a removal rate of 90% over 8 h at 25°C. Further, increasing Mn content led to a decrease in surface area and a convolution of the AC morphology. Mn(10%)–AC was shown to have the highest gas‐phase Tl removal efficiency (≥90%, over 8 h).

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Significantly improving trace thallium removal from surface waters during coagulation enhanced by nanosized manganese dioxide

Cited by 45 publications

References 46 publications

Magnetic seeding coagulation: Effect of Al species and magnetic particles on coagulation efficiency, residual Al, and floc properties

Magnetic seeding coagulation: Effect of Al species and magnetic particles on coagulation efficiency, residual Al, and floc properties

Applications and Biological Activity of Nanoparticles of Manganese and Manganese Oxides in In Vitro and In Vivo Models

Efficient removal of thallium from flow gas using manganite‐based catalysts by gas–solid‐phase catalytic oxidation at low temperature

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