Study of Waste from Two-Phase Olive Oil Extraction as an Additive in Ceramic Material

Abstract

The properties of ceramic materials are intimately related to a variety of factors, among them shaping procedure and sintering time. These factors condition, the microstructure and properties of the materials developed. Our study has formed materials from clays commonly used in the area of Bailén (Jaén) and wet pomace proceeding from the extraction of olive oil. The materials were shaped through extrusion. In this study, raw materials have been characterized and studied interesting properties of sintered materials, such as compressive strength, water absorption, open porosity or bulk density. The study concluded that the addition of wet pomace from olive oil industry into traditional brick entails a saving of raw materials and reducing the environmental impact generated by their manufacture. The best results are obtained for the samples with waste content of 3 wt %.

Synthesis and Characterization of Greener Ceramic Materials With Lower Thermal Conductivity Using Olive Mill Solid Byproduct

“…For comparison, laboratory prepared samples of clay-bricks with us much as 6 % olive-mill wastewater sludge were also reported to successfully undergo mechanical and environmental tests [10]. Savings of raw materials into ceramic samples incorporated with wet pomace from olive oil industry are further referenced in the scientific literature, with the best results obtained for 3 wt % addition [11,12].…”

“…Effluent olive-mill wastewater sludge was already embedded into fired laboratory produced clay bricks by Hamza et al [10]. Moreover, Cotes Palomino et al [11,12] have studied the influence of the amount of wet pomace (containing water, olive stone and pulp residue) into ceramics materials for optimization of their technological properties in order to meet the standards for use as structural construction bricks. Actually, the addition of olive-mill solid residue as a pore-forming agent into ceramic brick clays must be carefully controlled.…”