Unraveling the effect of olive-mill waste biostimulant particles during photosynthetic biogas upgrading coupled with pigment production

The addition of biostimulant particles (BPs) derived from olive-mill waste (OMW) has emerged as a promising technique to improve microalgae performance during photosynthetic biogas upgrading (PBU) and has motivated the use of pigment-producing microalgae to improve the cost-competitiveness of the process. However, a clear understanding of the interaction between the particles and microalgae is…