Thiomer solidification of an ASR bottom ash: Optimization based on compressive strength and the characterization of heavy metal leaching

2017 ◽  
Vol 166 ◽  
pp. 12-20 ◽  
Author(s):  
Jae Hyop Son ◽  
Jin Woong Baek ◽  
Angelo Earvin Sy Choi ◽  
Hung Suck Park
Keyword(s):  
Heavy Metal ◽  
Compressive Strength ◽  
Bottom Ash ◽  
Metal Leaching ◽  
Heavy Metal Leaching

Compressive strength and heavy metal leaching behaviour of mortars containing spent catalyst

2001 ◽  
Vol 19 (5) ◽  
pp. 456-464 ◽  
Author(s):  
Ubolluk Rattanasak ◽  
Chai Jaturapitakkul ◽  
Tippaban Sudaprasert
Keyword(s):  
Heavy Metal ◽  
Compressive Strength ◽  
Metal Leaching ◽  
Spent Catalyst ◽  
Heavy Metal Leaching ◽  
Leaching Behaviour

scholarly journals Immobilization of Heavy Metals in Boroaluminosilicate Geopolymers

Materials ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 214
Author(s):  
Piotr Rożek ◽  
Paulina Florek ◽  
Magdalena Król ◽  
Włodzimierz Mozgawa
Keyword(s):  
Mechanical Properties ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Compressive Strength ◽  
Phase Composition ◽  
Molar Ratio ◽  
Metal Leaching ◽  
Heavy Metal Leaching ◽  
Composition Structure ◽  
Structure And Microstructure

Boroaluminosilicate geopolymers were used for the immobilization of heavy metals. Then, their mechanical properties, phase composition, structure, and microstructure were investigated. The addition of borax and boric acid did not induce the formation of any crystalline phases. Boron was incorporated into the geopolymeric network and caused the formation of N–B–A–S–H (hydrated sodium boroaluminosilicate) gel. In the range of a B/Al molar ratio of 0.015–0.075, the compressive strength slightly increased (from 16.1 to 18.7 MPa), while at a ratio of 0.150, the compressive strength decreased (to 12 MPa). Heavy metals (lead and nickel) were added as nitrate salts. The loss of the strength of the geopolymers induced by heavy metals was limited by the presence of boron. However, it caused an increase in heavy metal leaching. Despite this, heavy metals were almost entirely immobilized (with immobilization rates of >99.8% in the case of lead and >99.99% in the case of nickel). The lower immobilization rate of lead was due to the formation of macroscopic crystalline inclusions of PbO·xH2O, which was vulnerable to leaching.

Assesment of Heavy Metal Leaching and Ecological Toxicity of Reused Coal Bottom Ash for Construction Site Runoff Control

2018 ◽  
Vol 35 (6) ◽  
pp. 561-570 ◽  
Author(s):  
Jinho Kim ◽  
Jin Chul Joo ◽  
Eunbi Kang ◽  
Jongsoo Choi ◽  
Jeongmin Lee ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Bottom Ash ◽  
Metal Leaching ◽  
Construction Site ◽  
Coal Bottom Ash ◽  
Heavy Metal Leaching ◽  
Runoff Control

Carbonation of MSWI-bottom ash to decrease heavy metal leaching, in view of recycling

2005 ◽  
Vol 25 (3) ◽  
pp. 291-300 ◽  
Author(s):  
T. Van Gerven ◽  
E. Van Keer ◽  
S. Arickx ◽  
M. Jaspers ◽  
G. Wauters ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Bottom Ash ◽  
Metal Leaching ◽  
Heavy Metal Leaching ◽  
Mswi Bottom Ash
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