relation: https://khub.utp.edu.my/scholars/15041/
title: Modeling and optimization of biochar based adsorbent derived from Kenaf using response surface methodology on adsorption of CD2+
creator: Saeed, A.A.H.
creator: Harun, N.Y.
creator: Sufian, S.
creator: Bilad, M.R.
creator: Nufida, B.A.
creator: Ismail, N.M.
creator: Zakaria, Z.Y.
creator: Jagaba, A.H.
creator: Ghaleb, A.A.S.
creator: Al-Dhawi, B.N.S.
description: Cadmium is one of the most hazardous metals in the environment, even when present at very low concentrations. This study reports the systematic development of Kenaf fiber biochar as an adsorbent for the removal of cadmium (Cd) (II) ions from water. The adsorbent development was aided by an optimization tool. Activated biochar was prepared using the physicochemical activation method, consisting of pre-impregnation with NaOH and nitrogen (N2) pyrolysis. The influence of the preparation parameters�namely, chemical impregnation (NaOH: KF), pyrolysis temperature, and pyrolysis time on biochar yield, removal rate, and the adsorption capacity of Cd (II) ions�was investigated. From the experimental data, some quadratic correlation models were developed according to the central composite design. All models demonstrated a good fit with the experimental data. The experimental results revealed that the pyrolysis temperature and heating time were the main factors that affected the yield of biochar and had a positive effect on the Cd (II) ions� removal rate and adsorption capacity. The impregnation ratio also showed a positive effect on the specific surface area of the biochar, removal rate, and adsorption capacity of cadmium, with a negligible effect on the biochar yield. The optimal biochar-based adsorbent was obtained under the following conditions: 550C of pyrolysis temperature, 180 min of heating time, and a 1:1 NaOH impregnation ratio. The optimum adsorbent showed 28.60 biochar yield, 69.82 Cd (II) ions removal, 23.48 mg/g of adsorption capacity, and 160.44 m2/g of biochar-specific area. © 2021 by the author. Licensee MDPI, Basel, Switzerland.
publisher: MDPI AG
date: 2021
type: Article
type: PeerReviewed
identifier:   Saeed, A.A.H. and Harun, N.Y. and Sufian, S. and Bilad, M.R. and Nufida, B.A. and Ismail, N.M. and Zakaria, Z.Y. and Jagaba, A.H. and Ghaleb, A.A.S. and Al-Dhawi, B.N.S.  (2021) Modeling and optimization of biochar based adsorbent derived from Kenaf using response surface methodology on adsorption of CD2+.  Water (Switzerland), 13 (7).   ISSN 20734441     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105193505&doi=10.3390%2fw13070999&partnerID=40&md5=50dd6721988a19ab9b5aedcd1830d5f1
relation: 10.3390/w13070999
identifier: 10.3390/w13070999