Olive biomass ash-based geopolymer composite: development and characterisation

Abstract

Alternative fuels are being used increasingly to reduce energy costs and benefit the economics of electric power industries. Olive residues could be among those alternative fuels. This paper investigates the potential use of olive biomass ash (OBA) to develop a new sustainable binder (geopolymer composite). Refined binder chemistry was developed where the alkali and silica contents of the OBA are supplemented by calcined kaolin (CK) as alumina-rich constituents targeting balanced chemistry. The results showed that optimum formulation was achieved when 40 wt-% OBA and 60 wt-% CK were blended yielding geopolymer concrete with 28day compressive strength of 30 MPa. Further refinements were carried out by adding of CaO or NaOH. The compressive strength reached to more than 45 MPa when 5 wt-% CaO or 10 wt-% NaOH was added to the optimum blend. microstructural and mineralogical studies were performed to get insight into the microstructural changes and explain the findings.

Composite materials based on halloysite clay nanotubes and cellulose from Posidonia oceanica sea balls: from films to geopolymers

“…62 The addition of biomass wood ash to metakaolin allowed the production of geopolymers with improved mechanical properties and reduced CO 2 equivalent emissions. 63 Jaradat et al 64 developed hybrid geopolymers with high compressive strength by combining calcined geopolymers with olive biomass.…”

Thermogravimetric Analysis of Moisture in Natural and Thermally Treated Clay Materials

“…They are effective in adsorbing toxic molecules [2], organic pollutants [3], and pigment impurities [4][5][6], and serve as nanocontainers for bioactive molecules [7,8] and nanocarriers for drug delivery systems [9,10]. Clay nanoparticles are suitable as fillers of polymers to obtain nanocomposites useful for packaging purposes [11,12] as well as building materials [13,14]. Moreover, nanoclays can be employed in cosmetic formulations [15][16][17][18] and the conservation of Cultural Heritage [19].…”