Immobilization of Zn(II) ions from contaminated biomass using ceramic matrices

et al. 2020

Sustain Environ Res

Self Cite

This article shows how pine sawdust residues can be used to adsorb nickel ions from synthetic solutions and then to produce porous bricks for civil construction using a mixture of natural clay and biomass containing the adsorbed metals. The adsorption tests were performed by mixing NiCl2 solutions with pine sawdust during a fixed stirring period of 24 h. The set was filtered and the filtrate was analysed. Highest efficiency adsorbate/adsorbent ratio was 50 mL of 1 M NiCl2 solution and 20 g L− 1 of pine sawdust. This was the contaminated biomass sample used in the manufacture of the bricks. This paper analyses the properties of the bricks achieved and compares them with bricks without added biomass, porous bricks containing zinc and commercial bricks. The obtained values of bulk density, apparent specific weight, apparent porosity, water absorption, apparent volume, weight loss on ignition, compressive strength, flexural modulus of rupture and efficiency retention of metal in the brick, demonstrate that the ceramic pieces obtained are optimal for construction.

Section: Characterization and Evaluation Of The Brickssupporting

confidence: 69%

Section: Characterization and Evaluation Of The Brickssupporting

confidence: 67%

Ceramic bricks containing Ni ions from contaminated biomass used as an adsorbent

et al. 2020

Sustain Environ Res

Self Cite

“…Very similar values of these properties were obtained for the brick manufactured from sawdust with Zn(II) adsorbed (AZ20) [33]. Also, in Table 2, the values for a COM are presented.…”

Section: Characterization and Evaluation Of The Brickssupporting

confidence: 67%

“…Therefore, the metal concentrations obtained by TCLP of AN20 are below the established maximum. A previous investigation has allowed obtaining similar behavior in AZ20 bricks [33]. These tests demonstrate that during the brick ring process, biomass residues are destroyed and heavy metals could encapsulate in the clay matrix, form oxides, and interact with silicon, iron, or aluminum oxides in the clay to form minerals stable, according to the literature [34,35].…”

Section: Characterization and Evaluation Of The Brickssupporting

confidence: 61%

Ceramic bricks containing Ni ions from contaminated biomass used as an adsorbent

et al. 2020

Preprint

Self Cite

This article shows how pine sawdust residues can be used to adsorb nickel ions from synthetic solutions and then to produce porous bricks for civil construction using a mixture of natural clay and biomass containing the adsorbed metals. The adsorption tests were performed by mixing NiCl2 solutions with pine sawdust during a fixed stirring period of 24 h. The set was filtered and the filtrate was analysed. Highest efficiency adsorbate/adsorbent ratio was 50 mL of 1 M NiCl2 solution and 20 g L-1 of pine sawdust. This was the contaminated biomass sample used in the manufacture of the bricks. This paper analyses the properties of the bricks achieved and compares them with bricks without added biomass, porous bricks containing zinc and commercial bricks. The obtained values of bulk density, apparent specific weight, apparent porosity, water absorption, apparent volume, weight loss on ignition, compressive strength, flexural modulus of rupture and efficiency retention of metal in the brick, demonstrate that the ceramic pieces obtained are optimal for construction.

“…Very similar values of these properties were obtained for the brick manufactured from sawdust with Zn(II) adsorbed (AZ20) [33]. Also, in Table 4, the values for a commercial brick (COM) are presented.…”

Section: Characterization and Evaluation Of The Brickssupporting

confidence: 65%

Ceramic bricks containing Ni ions from contaminated biomass used as an adsorbent

et al. 2020

Preprint

Self Cite

This article shows how pine sawdust residues can be used to adsorb nickel ions from synthetic solutions and then to produce porous bricks for civil construction using a mixture of natural clay and biomass containing the adsorbed metals. The adsorption tests were performed by mixing NiCl2 solutions with pine sawdust during a fixed stirring period of 24 h. The set was filtered and the filtrate was analysed. Highest efficiency adsorbate/adsorbent ratio was 1 mol L-1 of NiCl2 solution and 20 g L-1 of pine sawdust. This was the contaminated biomass sample used in the manufacture of the bricks. This paper analyses the properties of the bricks achieved and compares them with bricks without added biomass, porous bricks containing zinc and commercial bricks. The obtained values of bulk density (apD), apparent specific weight (aspW), apparent porosity (apP), water absorption (H2OAbs), apparent volume (apV), weight loss on ignition (LOI), compression fracture stress (σstr), flexural modulus of rupture (MOR) and retention efficiency (RE), demonstrate that the ceramic pieces obtained are optimal for construction.