Preparation of high flux low-cost ceramics membrane supports with oil-based drilling cutting pyrolysis residues (ODPRs) as raw material

Abstract

Low-cost ceramic membrane support is important for the filtration performance of a asymmetry filtration membrane. In this study, the oil-based drilling cutting pyrolysis residues (ODPRs) were used as raw materials incorporating with fly ash, and carbon particles were used as pore-forming agents to prepare high-flux low-cost ceramic membrane supports. Besides the strength of the supports was decreased with increased carbon particles addition and size, the porosity, pore size and consequently the Darcey permeability k₁ and pure water permeability of the support were increased with the increased carbon particle addition and size. The chemical stability of the support was deteriorated with the increased carbon particles addition. A leaching test on the support with 10% 12 µm carbon particle addition indicates that the support obtained by using the ODPRs incorporating with fly ash as raw materials is safe for aqueous filtration. This study showcased the utilization of ODPRs as a primary resource to manufacture a high-permeability support for water filtration. This approach aligns with the principles of sustainable development, following a waste-to-product-to-environment pathway.