TY - JOUR
T1 - Use of Eichhornia Crassipes as a Bioadsorbent for the Removal of Methyl Orange and Methylene Blue Present in Residual Solutions
AU - Hernández-Origel, Carlos David
AU - Patiño-Saldivar, Laura
AU - Salazar-Hernández, Mercedes
AU - Ardila, Alba Nelly
AU - Talavera-López, Alfonso
AU - Hernánez-Soto, Rosa
AU - Hernández, José Alfredo
N1 - Publisher Copyright:
© 2022
PY - 2022
Y1 - 2022
N2 - The textile industry is very important because its products are widely used by society, however, this activity has a great contribution to the contamination of water resources due to its effluents that contain large amounts of colorants, among which is the blue of methylene (MB) and methyl orange (MO) that can cause damage to the health of living being. For this reason the present study concerned the removal of these dyes by adsorption using Eichhornia Crassipes (Water lily) with different treatments. The results show that the chemisorption removal process using two sites per dye molecule having an exothermic nature for the water-treated lily and for the NaOH-treated lily is endothermic. The maximum adsorption capacities of 228.9 mg/g for MB (60 °C) and 155.38 mg/g (30 °C) for MO with the NaOH treatment were achieved. The SEM analysis shows that there are significant changes in the surface due to the treatments. The XRD patterns indicate that with the pretreatment with NaOH the crystallinity of WL increases while the treatment with water maintains the presence of amorphous cellulose. In the FTIR spectra, the bands corresponding to different functional groups such as lignin, cellulose and hemicellulose that participate in the adsorption of both dyes are observed.
AB - The textile industry is very important because its products are widely used by society, however, this activity has a great contribution to the contamination of water resources due to its effluents that contain large amounts of colorants, among which is the blue of methylene (MB) and methyl orange (MO) that can cause damage to the health of living being. For this reason the present study concerned the removal of these dyes by adsorption using Eichhornia Crassipes (Water lily) with different treatments. The results show that the chemisorption removal process using two sites per dye molecule having an exothermic nature for the water-treated lily and for the NaOH-treated lily is endothermic. The maximum adsorption capacities of 228.9 mg/g for MB (60 °C) and 155.38 mg/g (30 °C) for MO with the NaOH treatment were achieved. The SEM analysis shows that there are significant changes in the surface due to the treatments. The XRD patterns indicate that with the pretreatment with NaOH the crystallinity of WL increases while the treatment with water maintains the presence of amorphous cellulose. In the FTIR spectra, the bands corresponding to different functional groups such as lignin, cellulose and hemicellulose that participate in the adsorption of both dyes are observed.
KW - Bioadsorbents
KW - equilibrium
KW - freundlich
KW - kinetic
KW - water lily
UR - http://www.scopus.com/inward/record.url?scp=85134714428&partnerID=8YFLogxK
U2 - 10.12911/22998993/151916
DO - 10.12911/22998993/151916
M3 - Artículo
AN - SCOPUS:85134714428
SN - 2299-8993
VL - 23
SP - 193
EP - 211
JO - Journal of Ecological Engineering
JF - Journal of Ecological Engineering
IS - 9
ER -