Comprehensive comparisons of iodate adsorption onto corn stalk hydrothermal and pyrolytic biochar

Pyrolytic biochar and hydrothermal biochar of corn stalk were prepared at different temperatures, and their abilities to remove iodate were compared. The characterization results show that the preparation temperature determines the degree of carbonization and the specific surface area of biochar. Py...

Full description

Saved in:
Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2021-09, Vol.329 (3), p.1277-1290
Main Authors: Da, Tian-Xing, Chen, Tao, He, Wen-Ke, Liu, Piao, Ma, Yan, Tong, Zhen-Feng
Format: Article
Language:English
Subjects:
Adsorption
Analysis
Chemistry
Chemistry and Materials Science
Contaminants
Corn
Diagnostic Radiology
Functional groups
Hadrons
Heavy Ions
Inorganic Chemistry
Nuclear Chemistry
Nuclear energy
Nuclear Physics
Physical Chemistry
Specific surface
Surface area
Surface chemistry
Technology application
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Pyrolytic biochar and hydrothermal biochar of corn stalk were prepared at different temperatures, and their abilities to remove iodate were compared. The characterization results show that the preparation temperature determines the degree of carbonization and the specific surface area of biochar. Pyrolytic biochar has a larger specific surface area than hydrothermal biochar, but retains fewer oxygen-containing functional groups. The adsorption capacity of hydrothermal biochar (16.87 mg g −1 ) is better than that of pyrolytic biochar (10.31 mg g −1 ). Corn stalk hydrothermal biochar is fully recyclable for multiple adsorption/desorption trials, which makes it extremely attractive for iodate contaminant separation. Graphic abstract
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-021-07874-x