TY - JOUR
T1 - One-pot method to prepare lignin-based magnetic biosorbents for bioadsorption of heavy metal ions
AU - Tan, Liping
AU - Zhang, Yongchao
AU - Zhang, Weihua
AU - Zhao, Rongwen
AU - Ru, Yue
AU - Liu, Tongjun
N1 - Funding Information:
This research was funded by Qilu University of Technology (grant numbers: QLUTGJHZ2018012 , ZZ20190308 and ZZ20190304 ) and the National Natural Science Foundation of China ( 32001269 ).
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2
Y1 - 2022/2
N2 - Valorization of lignin is imperative since lignin is still an underutilized biomaterial. Herein, a facile fabrication method for lignin-based magnetic biosorbent (LMB) is proposed via assembling magnetic inorganic particles (Fe3O4) on lignin in-situ for eliminating heavy metal ions (HMIs) from wastewater without the utilization of organic solvents. Chemical and structural characterizations, which were determined by different analytical tools, including Fourier transform infrared (FTIR), Scanning electron microscope (SEM), X-ray diffraction (XRD), High-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS) confirmed that LMB was successfully formed via the feasible and green process. Then, LMB was found to exhibit highly effective removal performance for HMIs. The adsorption capacity of the LMB reached 152.58 mg/g for Pb2+ and 46.81 mg/g for Cu2+, with equilibrium attained within 30 min. Adsorption kinetics and isothermal adsorption of lead and copper ions by LMB were also examined. This study delivers a new perspective on lignin valorization for lignocellulose biorefineries and establishes a path for synthesizing a cost-efficient and green adsorbent for removing HMIs from wastewater.
AB - Valorization of lignin is imperative since lignin is still an underutilized biomaterial. Herein, a facile fabrication method for lignin-based magnetic biosorbent (LMB) is proposed via assembling magnetic inorganic particles (Fe3O4) on lignin in-situ for eliminating heavy metal ions (HMIs) from wastewater without the utilization of organic solvents. Chemical and structural characterizations, which were determined by different analytical tools, including Fourier transform infrared (FTIR), Scanning electron microscope (SEM), X-ray diffraction (XRD), High-resolution transmission electron microscopy (HRTEM), and X-ray photoelectron spectroscopy (XPS) confirmed that LMB was successfully formed via the feasible and green process. Then, LMB was found to exhibit highly effective removal performance for HMIs. The adsorption capacity of the LMB reached 152.58 mg/g for Pb2+ and 46.81 mg/g for Cu2+, with equilibrium attained within 30 min. Adsorption kinetics and isothermal adsorption of lead and copper ions by LMB were also examined. This study delivers a new perspective on lignin valorization for lignocellulose biorefineries and establishes a path for synthesizing a cost-efficient and green adsorbent for removing HMIs from wastewater.
KW - Biosorbent
KW - Heavy metal ions
KW - Lignin
KW - Lignocellulose
KW - Spent liquor
UR - http://www.scopus.com/inward/record.url?scp=85121261839&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2021.114387
DO - 10.1016/j.indcrop.2021.114387
M3 - Article
AN - SCOPUS:85121261839
SN - 0926-6690
VL - 176
JO - Industrial Crops and Products
JF - Industrial Crops and Products
M1 - 114387
ER -