Salacca zalacca skin and its modified form as biosorbents for Hg²⁺ removal from aqueous solution

Abstract

A chemically modified-biosorbent was prepared by attaching dithizone onto Salacca zalacca skin waste for Hg 2+ bioremoval. The material was synthesized by refluxing dithizone 5% with the Salacca zalacca skin powder followed by drying. The material was characterized through scanning electron microscopy, gas sorption analysis, and Boehm titration. The applicability of the material as biosorbent was tested for Hg 2+ adsorption at room temperature. Findings suggested that the modification altered the surface properties of the biosorbent as indicated by the increased values for such surface parameters as specific surface area, pore volume, and quantitative functional groups. Particularly, the material demonstrated a high removal efficiency during Hg 2+ adsorption, which fit the pseudo-second-order kinetics. The removal efficiency of Hg 2+ was not influenced by the adsorbent dosage of 1-4 g/L.

Preparation of C-based Magnetic Materials from Fruit Peel and Hydrochar using Snake Fruit (Salacca zalacca) Peel as Adsorbents for the Removal of Malachite Green Dye

“…As it has no market value, it has rarely been investigated and has not been widely utilized warranting further study (Yvonne et al, 2018). Previous research (Azizah and Fatimah, 2020) (Rahmayanti et al, 2022) utilizing Sp as an adsorbent to remove dyes and heavy metals reported fairly high adsorption capacity. Thus, Sp has many advantages in that it can be easily obtained and has good adsorption capabilities, rendering it promising for application as an adsorbent to eliminate waste water or organic pollutants.…”