Ceramic bricks containing Ni ions from contaminated biomass used as adsorbent

DAIANA SIMÓN; NANCY QUARANTA; SEBASTIÁN GASS; RAÚL A. PROCACCINI; ADRIÁN CRISTÓBAL

Sustainable Environment Research

Springer Nature

Lugar: Londres; Año: 2020

2468-2039

This article shows how pine sawdust residues can be used to adsorb nickel ions fromsynthetic solutions and then to produce porous bricks for civil construction using amixture of natural clay and biomass containing the adsorbed metals. The adsorptiontests were performed by mixing NiCl2 solutions with pine sawdust during a fixed stirringperiod of 24 h. The set was filtered and the filtrate was analysed. Highest efficiencyadsorbate/adsorbent ratio was 1 mol L-1 of NiCl2 solution and 20 g L-1 of pinesawdust. This was the contaminated biomass sample used in the manufacture of thebricks. This paper analyses the properties of the bricks achieved and compares themwith bricks without added biomass, porous bricks containing zinc and commercialbricks. The obtained values of apD: bulk density, aspW: apparent specific weight, apP:apparent porosity, H2O Abs: water absorption, apV: apparent volume, LOI: weight losson ignition, σstr: compression fracture stress, MOR: flexural modulus of rupture andRE: retention efficiency, demonstrate that the ceramic pieces obtained are optimal forconstruction.