Immobilization of heavy metals in polluted soils by the addition of zeolitic material synthesized from coal fly ash

Chemosphere ◽  
2006 ◽  
Vol 62 (2) ◽  
pp. 171-180 ◽  
Author(s):  
Xavier Querol ◽  
Andrés Alastuey ◽  
Natàlia Moreno ◽  
Esther Alvarez-Ayuso ◽  
Antonio Garcı́a-Sánchez ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Polluted Soils ◽  
Zeolitic Material

Phytoextraction of heavy metals from coal fly ash for restoration of fly ash dumpsites

2020 ◽  
Vol 24 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Ritesh Banerjee ◽  
Aditi Jana ◽  
Arpita De ◽  
Anita Mukherjee
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Coal Fly Ash

scholarly journals Stabilization of Municipal Solid Waste Fly Ash, Obtained by Co-Combustion with Sewage Sludge, Mixed with Bottom Ash Derived by the Same Plant

2020 ◽  
Vol 10 (17) ◽  
pp. 6075
Author(s):  
Ahmad Assi ◽  
Fabjola Bilo ◽  
Alessandra Zanoletti ◽  
Laura Borgese ◽  
Laura Eleonora Depero ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Sewage Sludge ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Coal Fly Ash ◽  
Bottom Ash ◽  
Solid Material ◽  
Flue Gas Desulfurization ◽  
Stabilization Method

This study presents an innovative stabilization method of fly ash derived from co-combustion of municipal solid waste and sewage sludge. Bottom ash, obtained from the same process, is used as a stabilizing agent. The stabilization method involved the use of two other components—flue gas desulfurization residues and coal fly ash. Leaching tests were performed on stabilized samples, aged in a laboratory at different times. The results reveal the reduction of the concentrations of heavy metals, particularly Zn and Pb about two orders of magnitude lower with respect to fly ash. The immobilization of heavy metals on the solid material mainly depends on three factors—the amount of used ash, the concentrations of Zn and Pb in as-received fly ash and the pH of the solution of the final materials. The inert powder, obtained after the stabilization, is a new eco-material, that is promising to be used as filler in new sustainable composite materials.

Will wheat be damaged by heavy metals on exposure to coal fly ash?

2018 ◽  
Vol 9 (5) ◽  
pp. 814-821 ◽  
Author(s):  
Xin Xiao ◽  
Kai Qin ◽  
Xiaofei Sun ◽  
Wang Hui ◽  
Limei Yuan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Coal Fly Ash

scholarly journals Heterogeneous biochars from agriculture residues and coal fly ash for the removal of heavy metals from coking wastewater

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 16018-16027 ◽  
Author(s):  
Lihui Gao ◽  
Jillian L. Goldfarb
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Wheat Straw ◽  
Adsorption Mechanism ◽  
Coal Fly Ash ◽  
Coking Wastewater ◽  
Chemical Adsorption ◽  
Agriculture Residues ◽  
Removal Of Heavy Metals

Heterogeneous biochar via pyrolysis of wheat straw and fly ash with chemical adsorption mechanism; cobalt shows higher capacity and rate.

scholarly journals Insights into the competitive adsorption of pollutants on a mesoporous alumina–silica nano-sorbent synthesized from coal fly ash and a waste aluminium foil

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15514-15522
Author(s):  
Aditi Chatterjee ◽  
Shahnawaz Shamim ◽  
Amiya Kumar Jana ◽  
Jayanta Kumar Basu
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Competitive Adsorption ◽  
Low Cost ◽  
Coal Fly Ash ◽  
Mesoporous Alumina ◽  
Aluminium Foil ◽  
Key Factors ◽  
Highly Efficient

A highly efficient and low-cost alumina–silica nano-sorbent was fabricated and characterized to realize the key factors responsible for its superiority over the existing adsorbents in treating the wastewater for the removal of dyes and heavy metals.

scholarly journals Protocol for measuring indoor exposure to coal fly ash and heavy metals, and neurobehavioural symptoms in children aged 6 to 14 years old

BMJ Open ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. e038960
Author(s):  
Kristina M Zierold ◽  
Clara G Sears ◽  
Abby N Hagemeyer ◽  
Guy N Brock ◽  
Barbara J Polivka ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Power Plants ◽  
Chemical Elements ◽  
Coal Fly Ash ◽  
Waste Product ◽  
Spherical Particles ◽  
Indoor Exposure ◽  
Study Results ◽  
The University

IntroductionFly ash is a waste product generated from burning coal for electricity. It is comprised of spherical particles ranging in size from 0.1 µm to over 100 µm in diameter that contain trace levels of heavy metals. Large countries such as China and India generate over 100 million tons per year while smaller countries like Italy and France generate 2 to 3 million tons per year. The USA generates over 36 million tons of ash, making it one of the largest industrial waste streams in the nation. Fly ash is stored in landfills and surface impoundments exposing communities to fugitive dust and heavy metals that leach into the groundwater. Limited information exists on the health impact of exposure to fly ash. This protocol represents the first research to assess children’s exposure to coal fly ash and neurobehavioural outcomes.MethodsWe measure indoor exposure to fly ash and heavy metals, and neurobehavioural symptoms in children aged 6 to 14 years old. Using air pollution samplers and lift tape samples, we collect particulate matter ≤10 µm that is analysed for fly ash and heavy metals. Toenails and fingernails are collected to assess body burden for 72 chemical elements. Using the Behavioural Assessment and Research System and the Child Behaviour Checklist, we collect information on neurobehavioural outcomes. Data collection began in September 2015 and will continue until February 2021.Ethics and disseminationThis study was approved by the Institutional Review Boards of the University of Louisville (#14.1069) and the University of Alabama at Birmingham (#300003807). We have collected data from 267 children who live within 10 miles of two power plants. Children are at a greater risk for environmental exposure which justifies the rationale for this study. Results of this study will be distributed at conferences, in peer-reviewed journals and to the participants of the study.

scholarly journals Romanian bentonite and fly ash characterization and their use in heavy metal “in-situ” immobilization in polluted soils

2017 ◽  
Vol 18 ◽  
pp. 01022
Author(s):  
Săndica Liliana Gherghe ◽  
Ildiko Anger ◽  
Georgiana Moise ◽  
Roxana Trusca
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Fly Ash ◽  
Contact Time ◽  
In Situ Immobilization ◽  
Polluted Soils ◽  
Ft Ir ◽  
Metallurgical Activities

This article presents the characterization of the Romanian bentonite and fly ash, using different techniques: FAAS, XRD, FT-IR, SEM and EDAX and their evaluation as sorbents for heavy metals immobilization in polluted soils coming from mining and metallurgical activities. The applicability of bentonite and fly ash for Pb (II) and Zn (II) immobilization was studied using aqueous solutions of these metals. The influence of the pH and contact time were studied. The results shown that the Romanian bentonite and fly ash could be used for Pb (II) and Zn (II) immobilization in polluted soils from brownfields.

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