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.

Removal of heavy metals from wastewater using CFB-coal fly ash zeolitic materials

2010 ◽  
Vol 173 (1-3) ◽  
pp. 581-588 ◽  
Author(s):  
Nikolaos Koukouzas ◽  
Charalampos Vasilatos ◽  
Grigorios Itskos ◽  
Ioannis Mitsis ◽  
Angeliki Moutsatsou
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Coal Fly Ash ◽  
Removal Of Heavy Metals ◽  
Zeolitic Materials

scholarly journals Sawdust for the Removal of Heavy Metals from Water: A Review

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4318
Author(s):  
Elie Meez ◽  
Abbas Rahdar ◽  
George Z. Kyzas
Keyword(s):  
Heavy Metals ◽  
Adsorption Mechanism ◽  
Freundlich Isotherm ◽  
Order Kinetic ◽  
Suitable Material ◽  
Removal Of Heavy Metals ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
And Control ◽  
Environmental Agencies

The threat of the accumulation of heavy metals in wastewater is increasing, due to their abilities to inflict damage to human health, especially in the past decade. The world’s environmental agencies are trying to issue several regulations that allow the management and control of random disposals of heavy metals. Scientific studies have heavily focused on finding suitable materials and techniques for the purification of wastewaters, but most solutions have been rejected due to cost-related issues. Several potential materials for this objective have been found and have been compared to determine the most suitable material for the purification process. Sawdust, among all the materials investigated, shows high potential and very promising results. Sawdust has been shown to have a good structure suitable for water purification processes. Parameters affecting the adsorption mechanism of heavy metals into sawdust have been studied and it has been shown that pH, contact time and several other parameters could play a major role in improving the adsorption process. The adsorption was found to follow the Langmuir or Freundlich isotherm and a pseudo second-order kinetic model, meaning that the type of adsorption was a chemisorption. Sawdust has major advantages to be considered and is one of the most promising materials to solve the wastewater problem.

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
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