Figure 4. images (a, b, c and d) NZ (A.M.2) particles after calcinations and zeolitization processes

From

Rice Husk Derived Nano Zeolite (A.M.2) as Fertilizer, Hydrophilic and Novel Organophillic Material

Hassan AZA, Abdel Wahab M Mahmoud, G. Turky

American Journal of Nanomaterials. 2017, 5(1), 11-23 doi:10.12691/ajn-5-1-3