Figure 8.

Preparation of superadsorbent NC materials from EFB, incorporated with activated carbon from black liquor obtained during the EFB pretreatment process. The presence of sulfonated active sites as a result of acid hydrolysis was momentous in the heavy metal adsorption capacity.¹²⁶ Photography courtesy: Septevani, A. A.; Rifathin, A.; Sari, A. A.; Sampora, Y.; Ariani, G. N.; Sudiyarmanto; and Sondari, D. Reprinted with permission from Septevani, A. A.; Rifathin, A.; Sari, A. A.; Sampora, Y.; Ariani, G. N.; Sudiyarmanto; and Sondari, D. Oil palm empty fruit bunch-based nanocellulose as a superadsorbent for water remediation. Carbohydr. Polym.2020,229, 115433. Copyrright 2020, Elsevier Science Ltd.