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Fibres & Textiles in Eastern Europe
Édition 31 (2023): Edition 2 (July 2023)
Accès libre
Removal of Zinc Ions from Aqueous Solutions with the Use of Lignin and Biomass Part II
P. Miros-Kudra
P. Miros-Kudra
,
P. Sobczak
P. Sobczak
,
K. Gzyra-Jagieła
K. Gzyra-Jagieła
et
M. Ciepliński
M. Ciepliński
| 04 juil. 2023
Fibres & Textiles in Eastern Europe
Édition 31 (2023): Edition 2 (July 2023)
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Article Category:
Research Article
Publié en ligne:
04 juil. 2023
Pages:
11 - 25
DOI:
https://doi.org/10.2478/ftee-2023-0012
Mots clés
lignin
,
sorption
,
biomass
,
zinc ions
,
water treatment
© 2023 Łukasiewicz Research Network-Łódź Institute of Technology, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig. 1.
Materials used for sorption tests and their relative humidity
Fig. 13.
Concept of a sorption column composed of 3 types of bed (coconut fiber, lignin, pine bark) : for 1 g and 2 g, respectively
Fig. 2.
MMD of lignin separated from black liquor
Fig. 3.
FTIR-ATR spectrum of lignin in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 4.
FTIR-ATR spectrum of lignin in the range 400-1500cm−1 before and after adsorption of zinc ions
Fig. 5.
FTIR-ATR spectrum of pine bark in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 6.
FTIR-ATR spectrum of chitosan in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 7.
FTIR-ATR spectrum of oat bran in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 8.
FTIR-ATR spectrum of rice husk in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 9.
FTIR-ATR spectrum of coconut fibre in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 10.
FTIR-ATR spectrum of pectins in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 11.
FTIR-ATR spectrum of sodium alginate in the range 400-4000cm−1 before and after adsorption of zinc ions
Fig. 12.
Yield of Zn ion removal (10 mg/dm3) from aqueous solutions for selected samples at pH 4 and 7
Fig. 14.
Effect of time and system pH on the sorption yield of zinc ions (10 mg/dm3)
Fig. 15.
Effect of time and system pH on the sorption yield of zinc ions (40 mg/dm3)
Fig. 16.
Effect of sorbent mass and system pH on the sorption yield of zinc ions
Fig. 17.
Effect of temperature and pH of the system on the yield of zinc ion sorption
Results of GPC analysis of the lignin sample expressed in standard units
Mn (PS standard) [g/mol]
Mw (PSstandard) [g/mol]
Mw/Mn
2 710
5 970
2.20
Chemical composition of plant raw materials
Content of analyzed fractions [%]
Rice husk
Pine bark
Coconut fiber
Oat bran
Ash
16.1
0.200
1.75
3.50
Compounds extractable in ethanol
1.97
7.85
1.24
3.09
Cellulose
44.3
25.6
40.7
5.61
Lignin
29.6
45.2
45.8
5.72
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