From waste to waste: iron blast furnace slag for heavy metal ions removal from aqueous system.

Content Provider	Europe PMC
Author	Abdelbasir, Sabah M. Khalek, Mohamed A. Abdel
Abstract	Inordinate levels of heavy metals in water sources have long been a matter of concern, posing serious environmental and public health risks. Adsorption, on the other hand, is a viable technique for removing heavy metals from water due to its high efficiency, low cost, and ease of operation. Blast furnace slag (BFS) is considered a cheap sorbent for the get rid of Co2+ and Pb2+ ions from aqueous media. The nonmodified slag is characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), N2 adsorption–desorption isotherms, energy dispersive X-ray analysis (EDX), scanning electron microscopy (SEM), and zeta potential. The removal of Co2+ and Pb2+ ions was carried out using batch adsorption experiments from an aqueous medium. The influence of several variables as pH, contact time, adsorbent dose, temperature, and initial ions concentration was considered. The isotherm, kinetic, thermodynamic, and recyclability were also conducted. The maximum uptake capacity for Co2+ and Pb2+ was 43.8 and 30.2 mg g−1 achieved at pH 6 after 60 min contact time. The adsorption kinetics and isotherms of BFS for Co2+ and Pb2+ fitted well to Avrami and Freundlich models, respectively. The main adsorption mechanism between BFS and the metal ions was ion exchange. The regeneration of the used slag was studied for reuse many cycles. In terms of economics and scalability, nonmodified BFS treatment has great potential as a cost-effective adsorbent that could be used in water pollution treatment.Graphical abstractSupplementary InformationThe online version contains supplementary material available at 10.1007/s11356-022-19834-3.
ISSN	09441344
Volume Number	29
PubMed Central reference number	PMC9395503
Issue Number	38
PubMed reference number	35355191
Journal	Environmental Science and Pollution Research International [Environ Sci Pollut Res Int]
e-ISSN	16147499
DOI	10.1007/s11356-022-19834-3
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2022-03-31
Publisher Place	Berlin/Heidelberg
Access Restriction	Open
Rights License	Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2022
Subject Keyword	Blast furnace slag Removal Adsorption Heavy metals Kinetics Industrial wastewater
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Health, Toxicology and Mutagenesis Medicine