Rapid synthesis of magnetic zeolite materials from fly ash and iron-containing wastes using supercritical water for elemental mercury removal from flue gas

Ma, Lingjun; Han, Lupeng; Chen, Shuai; Hu, Jiangliang; Chang, Liping; Wang, Bao; Wang, Jiancheng

doi:10.1016/j.fuproc.2019.02.021

Cited by 57 publications

(27 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, in this study, FA48 was selected to evaluate the adsorption capability for Hg 2+ removal from aqueous solutions. A comparison of the Hg 2+ adsorption capability of FA48 with that of the other adsorbents is listed in Table 2 [24,26,[32][33][34][35]. FA48 exhibited potential in Hg 2+ adsorption from aqueous solutions compared to other reported adsorbents (except for coal gangue and multifunctional mesoporous material).…”

Section: Adsorption Of Hg 2+mentioning

confidence: 99%

“…Additionally, to investigate the adsorption properties and interactions, the adsorption isotherm data were evaluated using the Freundlich and Langmuir isotherm models. The Freundlich isotherm model was applied to multilayer adsorption, while the Langmuir isotherm model showed monolayer adsorption at specific homogenous sites [24].…”

Section: Adsorption Isotherms Of Hg 2+mentioning

confidence: 99%

“…Thus, this conversion of CFA to zeolite is useful for the development of a sustainable society as it decreases the waste generated from coal-fired power plants. Many conversion technologies, namely fusion-assisted hydrothermal treatment [14], multi-step treatment [14], sonication [14], conventional hydrothermal treatment [23,24], and microwave irritation [25,26] have been reported in previous studies. Zeolite synthesis involves three steps: dissolution, condensation, crystallization [27].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adsorption/Desorption Capability of Potassium-Type Zeolite Prepared from Coal Fly Ash for Removing of Hg2+

et al. 2021

View full text Add to dashboard Cite

The feasibility of using potassium-type zeolite (K-type zeolite) prepared from coal fly ash (CFA) for the removal of Hg2+ from aqueous media and the adsorption/desorption capabilities of various potassium-type zeolites were assessed in this study. Potassium-type zeolite samples were synthesized by hydrothermal treatment of CFA at different intervals (designated CFA, FA1, FA3, FA6, FA12, FA24, and FA48, based on the hours of treatment) using potassium hydroxide solution, and their physicochemical characteristics were evaluated. Additionally, the quantity of Hg2+ adsorbed was in the order CFA, FA1 < FA3 < FA6 < FA12 < FA24 < FA48, in the current experimental design. Therefore, the hydrothermal treatment time is important to enhance the adsorption capability of K-type zeolite. Moreover, the effects of pH, temperature, contact time, and coexistence on the adsorption of Hg2+ were elucidated. In addition, Hg2+ adsorption mechanism using FA48 was demonstrated. Our results indicated that Hg2+ was exchanged with K+ in the interlayer of FA48 (correlation coefficient = 0.946). Finally, adsorbed Hg2+ onto FA48 could be desorbed using a sodium hydroxide solution (desorption percentage was approximately 70%). Our results revealed that FA48 could be a potential adsorbent for the removal of Hg2+ from aqueous media.

show abstract

Section: Adsorption Of Hg 2+mentioning

confidence: 99%

Section: Adsorption Isotherms Of Hg 2+mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption/Desorption Capability of Potassium-Type Zeolite Prepared from Coal Fly Ash for Removing of Hg2+

et al. 2021

View full text Add to dashboard Cite

show abstract

“…More than 70% of recovery rate could be obtained at 250°C without deformation of the molecules, thus reducing hazardous compounds of waste LCD panel before disposal at landfill sites. Ma, Han, et al (2019) applied supercritical method to prepare magnetic zeolites from fly ash (FA) and iron-containing wastes (red mud [RM] and steel slag [SS]) for removing elemental mercury (Hg 0 ) from flue gas. The efficiency, regeneration and recyclability of magnetic zeolites for Hg 0 removal were examined using a fixed-bed reactor.…”

Section: Annual Literature Reviewmentioning

confidence: 99%

“…Ma, Han, et al (2019) applied supercritical method to prepare magnetic zeolites from fly ash (FA) and iron‐containing wastes (red mud [RM] and steel slag [SS]) for removing elemental mercury (Hg 0 ) from flue gas. The efficiency, regeneration and recyclability of magnetic zeolites for Hg 0 removal were examined using a fixed‐bed reactor.…”

Section: Physical Treatmentmentioning

confidence: 99%