ABSTRACT
Electrohydrodynamic (EHD) drying is an innovative technology, exploiting the phenomenon of electrically induced dewatering in strong electric fields. It has recently gained an extensive interest due to its nonthermal nature, particularly suitable for heat-sensitive biomaterials such as foods, medicinal plants, and other biomaterials. The fundamental principles and key factors of EHD drying are briefly reviewed. Effects of electric field, airflow rate, and relative humidity on EHD drying performance are explored. Analysis of the available literature on EHD drying showed that there is a significant gap in knowledge, which should be addressed in future research. A comprehensive review of EHD prototypes, as well as limitations for industrial scaling of EHD dryers, is presented.
