Olive Mill Wastewater Remediation: From Conventional Approaches to Photocatalytic Processes by Easily Recoverable Materials

Olive oil production in Mediterranean countries represents a crucial market, especially for Spain, Italy, and Greece. However, although this sector plays significant role the European economy, it also leads to dramatic environmental consequences. Waste generated from olive processes can be divided into solid waste mill wastewaters (OMWW). These latter are characterized by high levels of organic compounds (i.e., polyphenols) that have been efficiently removed because their hazardous effects. Over years, regard, several strategies primarily investigated, but all them advantages weaknesses, which need overcome. Moreover, recent each country has developed national legislation regulate type waste, line with EU legislation. In scenario, present review provides an insight different methods used treating paying particular attention advances related development more efficient photocatalytic approaches. most advanced photocatalysts should easily recoverable considered valid alternatives currently conventional systems. context, optimization innovative systems is today’s object hard work research community due profound potential they offer real applications. This overview OMWW treatment methods, highlighting disadvantages discussing still unresolved critical issues.