TY - JOUR
T1 - Macroporous lignin adsorbents: A bio-sourced tool kit to defuse the Cr(VI) threat in wastewater
AU - Barkan-Öztürk, Hande
AU - Verdross, Philip
AU - Bismarck, Alexander
N1 - Publisher Copyright:
© 2024
Accession Number
WOS:001283606300001
PY - 2024/10
Y1 - 2024/10
N2 - Amino-functionalised (triethylenetetramine) macroporous lignin monoliths were produced by curing an emulsion template containing untreated kraft black liquor with oxirane-crosslinkers. These lignin-based adsorbents were tested for the removal of Cr(VI) from water and synthetic waste water. A one-pot rout for their production is presented and their chemical and physical nature was investigated. Produced monoliths were tested in static and continuous adsorption experiments and chromium removal from water and synthetic wastewater was quantified via UV–vis spectroscopy. The nitrogen content of functionalised lignin monoliths reached up to 5.1 wt%, leading to adsorption capacities of up to 897 mg/g at pH = 2, as compared to non-functionalised lignin monoliths with a maximum adsorption capacity of 117 mg/g. The adsorption capacity of lignin monoliths produced is amongst the highest of bio-based materials presented in the literature.
AB - Amino-functionalised (triethylenetetramine) macroporous lignin monoliths were produced by curing an emulsion template containing untreated kraft black liquor with oxirane-crosslinkers. These lignin-based adsorbents were tested for the removal of Cr(VI) from water and synthetic waste water. A one-pot rout for their production is presented and their chemical and physical nature was investigated. Produced monoliths were tested in static and continuous adsorption experiments and chromium removal from water and synthetic wastewater was quantified via UV–vis spectroscopy. The nitrogen content of functionalised lignin monoliths reached up to 5.1 wt%, leading to adsorption capacities of up to 897 mg/g at pH = 2, as compared to non-functionalised lignin monoliths with a maximum adsorption capacity of 117 mg/g. The adsorption capacity of lignin monoliths produced is amongst the highest of bio-based materials presented in the literature.
KW - Cr(VI) removal
KW - Heavy metal removal from wastewater
KW - Kraft black liquor
KW - Lignin
KW - Natural polymer adsorbent
UR - http://www.scopus.com/inward/record.url?scp=85199547139&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2024.113621
DO - 10.1016/j.jece.2024.113621
M3 - Article
AN - SCOPUS:85199547139
SN - 2213-3437
VL - 12
JO - Journal of environmental chemical engineering
JF - Journal of environmental chemical engineering
IS - 5
M1 - 113621
ER -