A composite adsorbent of ZnS nanoclusters grown in zeolite NaA synthesized from fly ash with a high mercury ion removal efficiency in solution

The present work examines the possible use of fly ash, a byproduct of coal power stations, as a means of removing phenol from water, or equivalently, of restricting its movement in solid wastes or soil. Equilibrium experiments were performed to evaluate the removal efficiency of fly ash. The adsorption experiments were undertaken using fly ash treated at three different pH levels and with three different temperatures. The results indicate that although phenol can be removed from water, this depends markedly on the temperature and pH value of the treatment solution employed.

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Zeolite and short-cut fiber-based wet-laid filter media for particles and heavy metal ion removal of wastewater

Journal of Industrial Textiles ◽

10.1177/1528083719866934 ◽

2019 ◽

pp. 152808371986693

Author(s):

Kyung Chul Sun ◽

Jung Woo Noh ◽

Yeong Og Choi ◽

Sung Hoon Jeong ◽

Yeon Sang Kim

Keyword(s):

Removal Efficiency ◽

Metal Ion ◽

High Efficiency ◽

Solid Particles ◽

Filter Media ◽

Main Layer ◽

Metal Ion Removal ◽

Ion Removal ◽

Heavy Metal Ion Removal ◽

Efficiency Rate

As development of industrialization grows constantly, the purification of hazardous solid particles and ions is one of the most important topics in environment and ecosystem. In this report, we designed and developed a novel and advanced type of filter media for the removal of both solid particles and hazardous ions, we choose Cs+ and Ca2+ here, by enclosing zeolite in wet-laid nonwoven media. The performance of the prepared filter media was evaluated by continuous sorption experiments, which were followed by solid particles and ion-removal efficiency studies. The prepared filter media showed excellent uniformity. The prepared filter media exhibited a solid removal efficiency rate which ranged from 80 to 82%, and the initial removal efficiency of ions exceeded 99%. These values are in effect as the main layer in the completed liquid filter media and for the next step to prepare the completed multi-layered liquid filter units. The results here suggest that this novel filter media can be used in high-efficiency and multi-functional liquid filter units for residential and industrial engineering.

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Chemical modification of chitosan and equilibrium study for mercury ion removal

Water Research ◽

10.1016/s0043-1354(03)00431-7 ◽

2003 ◽

Vol 37 (19) ◽

pp. 4770-4780 ◽

Cited By ~ 209

Author(s):

Choong Jeon ◽

Wolfgang H Höll

Keyword(s):

Chemical Modification ◽

Mercury Ion ◽

Equilibrium Study ◽

Ion Removal

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Removal of dyes by a novel fly ash–chitosan–graphene oxide composite adsorbent

RSC Advances ◽

10.1039/c5ra22091b ◽

2016 ◽

Vol 6 (22) ◽

pp. 17987-17994 ◽

Cited By ~ 11

Author(s):

Guanghong Sheng ◽

Shuang Zhu ◽

Shisheng Wang ◽

Zhiyu Wang

Keyword(s):

Graphene Oxide ◽

Fly Ash ◽

Cationic Dyes ◽

Composite Adsorbent ◽

Oxide Composite

A novel FCGO adsorbent is synthesized from fly ash cross-linked with chitosan and graphene oxide and characterized using SEM, XRD and FTIR analyses. The adsorbent effectively removes anionic and cationic dyes.

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Experimental Research on Fly Ash Modified Adsorption of Mercury Removal Efficiency of Flue Gas

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.800.132 ◽

2013 ◽

Vol 800 ◽

pp. 132-138 ◽

Cited By ~ 3

Author(s):

Li Li ◽

Si Wei Pan ◽

Jiang Jun Hu ◽

Ji Fu Kuang ◽

Min Qi ◽

...

Keyword(s):

Fly Ash ◽

Removal Efficiency ◽

Flue Gas ◽

Power Plants ◽

Physical Adsorption ◽

Adsorption Properties ◽

Mercury Removal ◽

Immersion Method ◽

Adsorption Temperature ◽

Modified Fly Ash

Mercury in the flue gas in coal-fired power plant as the research object using halogen compound as the modified material, the fly ash was modified by chemical immersion method，Study on adsorption agent, the adsorption temperature, modified material and loading on mercury adsorption of flue gas in coal-fired power plants. Experiments showed that, iodine adsorption properties of modified fly ash was the most significant, with the increase of the sorbent dosage, Hg removal efficiency increased, fly ash adsorption amount of change was not obvious, between 80-140°C temperature range, fly ash on mercury existed mainly physical adsorption, the mercury removal efficiency decreased with the increase of temperature, chemical adsorption occurred at 160°C, mercury removal efficiency increased.

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Experiment Investigation Absorption of Mercury by Modified Fly Ash Dust Layer Attaching on Filter

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.393-395.1212 ◽

2011 ◽

Vol 393-395 ◽

pp. 1212-1216 ◽

Cited By ~ 1

Author(s):

Huan Wang ◽

Yong Fa Diao

Keyword(s):

Fly Ash ◽

Removal Efficiency ◽

Fixed Bed ◽

Experimental Studies ◽

Elemental Mercury ◽

Mercury Vapor ◽

Filter Material ◽

Fixed Bed Reactor ◽

Dust Layer ◽

Modified Fly Ash

As to figure out the effect that modified fly ash, which is prepared by fly ash –CaO, and modified fly ash dust layer attached on the surface of the filter material adsorbed elemental mercury, experimental studies are administrated in a laboratory-scale fixed bed reactor system with gaseous elemental mercury produced by a mercury vapor generator and simulated flue gas composition. The experimental results indicated that the adsorption performance of fly ash and CaO relatively poor. The proportion of CaO in the modified fly ash will affected the mercury removal efficiency of the absorbent which prepared by fly ash and CaO. It will be an optimal effect when the blend ratio of the flying ash and CaO is 2 to 1, and the maximum removal efficiency is up to 34%.As the adsorption temperature increases the removal efficiency of the modified fly ash deteriorates. The efficiency of dust layer attaching on the surface of the filter material is getting higher with the larger porosity of dust layer and smaller particle material size.

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