Hydrothermal carbonization of rambutan peel (Nephelium lappaceum L.) as a Green and low-cost adsorbent for Fe(II) removal from aqueous solutions. Issue 3 (16th March 2022)

• Record Type: Journal Article
• Authors: Normah, N.; Juleanti, N.; Palapa, N. R.; Taher, T.; Siregar, P. M. S. B. N.; Wijaya, A.; Lesbani, A.
• Is Part Of: Chemistry and ecology. Volume 38:Issue 3(2022)
• Page Start: 284
• Page End: 300
• Publication Date: 2022-03-16
• Subjects: Hydrochar -- metal ions -- adsorption -- desorption -- recyclability; Pollution -- Environmental aspects -- Periodicals; Ecology -- Periodicals; 577.2
• DOI: 10.1080/02757540.2022.2040996
• Languages: English
• ISSNs: 0275-7540

Abstract

ABSTRACT: This study aims to utilise rambutan peel waste and convert it into hydrochar then applied as an adsorbent to remove Fe(II) contaminants from aqueous solutions. Rambutan peel hydrochar (RP-HC) was prepared by hydrothermal treatment of raw RP at 200 °C. The prepared samples were characterised using XRD, FT-IR, BET, and SEM. The sample contains a lot of -NH and -OH active sites which will affect the performance of crude RP-HC and RP as adsorbents for the removal of Fe(II) from aqueous solutions. The results of the adsorption study showed that the adsorption of Fe(II) using RP-HC had a maximum adsorption capacity of 25.126 mg/L, while the RP was 14.553 mg/L and the adsorbent regeneration study showed that the adsorption effectiveness of RP and RP-HC was stable until the third cycle.