Evaluation of Adsorption Kinetic of Chromium (VI) Using N-doped Carbon Based on Palm Empty Fruit Bunches

DOI

10.2991/978-94-6239-717-0_19How to use a DOI?

Keywords

Adsorption kinetics; Chromium (VI); N-doped carbon; Pyridinic N

Abstract

Chromium (Cr) is a heavy metal widely used in various industries. Chromium (Cr), a heavy metal, has significant risks to human health and the environment. Chromium in the hexavalent form (Cr VI) is more hazardous than chromium in the trivalent form (Cr III). This work investigated the performance of N-doped carbon derived from palm empty fruit bunches for adsorbing hexavalent chromium (Cr VI) from an aqueous solution, and it also investigated the kinetics of adsorption. N-doped carbon is synthesized via the preparation of cellulose aerogels derived from palm empty fruit bunches, utilizing a crosslinking agent comprising ammonia, urea, and NaOH solution, followed by pyrolysis and adsorption performance evaluations on 100 ppm of Cr(VI) metal at various contact times (15, 30, 45, 60, 90, 120 min). N-doped carbon has been successfully produced from cellulose aerogel based on palm empty fruit bunches, exhibiting a nitrogen doping level of 13% and a high specific surface area. N-doped carbon containing pyridinic nitrogen is capable of absorbing Cr(VI) metal ions with a capacity of 126.05 mg/g, achieving optimal adsorption within 30 minutes at an initial concentration of 100 ppm of the adsorbate. At pH 6, the adsorption of doped carbon N, featuring a pyridinic active group N that is protonated into pyridinium species, occurs with the metal ion Cr (VI) in the form of (CrO₄)^2-. This process involves chemical interactions that can be categorized as electrostatic interactions, and the kinetics of the reaction follows a pseudo second order, exhibiting an R² value of 0.99715.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Susanto Susanto
AU  - Moch. Agung Indra Iswara
AU  - Ulfiana Ihda Afifa
AU  - Khalimatus Sa’diyah
PY  - 2026
DA  - 2026/06/25
TI  - Evaluation of Adsorption Kinetic of Chromium (VI) Using N-doped Carbon Based on Palm Empty Fruit Bunches
BT  - Proceedings of the 19th International Conference on Quality in Research (QiR 2025)
PB  - Atlantis Press
SP  - 257
EP  - 270
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-717-0_19
DO  - 10.2991/978-94-6239-717-0_19
ID  - Susanto2026
ER  -