Co-biosorption of copper and glyphosate by Ulva lactuca
This study investigated the adsorption of glyphosate (PMG) onto the green algae Ulva lactuca. PMG was not adsorbed by U. lactuca but PMG was adsorbed when the process was mediated by Cu(II) with molar ratios Cu(II):PMG ≥ 1.5:1.U. lactuca was characterized by water adsorption surface area, FTIR, SEM...
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todo:paper_09277765_v105_n_p251_Trinelli2023-10-03T15:47:10Z Co-biosorption of copper and glyphosate by Ulva lactuca Trinelli, M.A. Areco, M.M. Dos Santos Afonso, M. Biosorption Copper Glyphosate Ulva lactuca Argentina Biosorbents Biosorption process Copper adsorption Freundlich models FTIR Glyphosates Green alga Langmuir models Langmuirs Metal uptake Molar ratio Surface area Surface complex Ulva lactuca Water adsorption Adsorption Algae Biosorption Copper Reservoirs (water) Stoichiometry Herbicides copper glyphosate herbicide metal ion adsorption article binding site biosorption calculation cell wall complex formation controlled study infrared spectroscopy isotherm nonhuman pH priority journal stoichiometry surface property Ulva Adsorption Biomass Copper Glycine Herbicides Hydrogen-Ion Concentration Spectrophotometry, Infrared Ulva Water This study investigated the adsorption of glyphosate (PMG) onto the green algae Ulva lactuca. PMG was not adsorbed by U. lactuca but PMG was adsorbed when the process was mediated by Cu(II) with molar ratios Cu(II):PMG ≥ 1.5:1.U. lactuca was characterized by water adsorption surface area, FTIR, SEM and EDS. The Langmuir and Freundlich models were applied. Results showed that the biosorption processes for copper and PMG in the presence of copper were described described by the Langmuir model (qmax=0.85±0.09mmolg-1, KL=0.55±0.14lmmol-1 and qmax=3.65±0.46mmolg-1, KL=0.103±0.03lmmol-1, respectively). Copper adsorption was greater in the presence of PMG than in the absence of the pesticide and the adsorption can only be represented by the Freundlich model (KF=0.08±0.01, 1/n=1.86±0.07).In all cases studied, the maximum metal uptake (qmax) increased with increasing pH. Surface complexes with a stoichiometry ranging from CuPMGCu to CuPMGCu3 are suggested as reaction products of the process.Due to the increasing amounts of PMG applied in Argentina, natural reservoirs present considerable amounts of this herbicide. The value of this work resides in using U. lactuca, a marine seaweed commonly found along coastlines all over the world, as a biosorbent for PMG. © 2013 Elsevier B.V. Fil:Trinelli, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Areco, M.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09277765_v105_n_p251_Trinelli |
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Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Biosorption Copper Glyphosate Ulva lactuca Argentina Biosorbents Biosorption process Copper adsorption Freundlich models FTIR Glyphosates Green alga Langmuir models Langmuirs Metal uptake Molar ratio Surface area Surface complex Ulva lactuca Water adsorption Adsorption Algae Biosorption Copper Reservoirs (water) Stoichiometry Herbicides copper glyphosate herbicide metal ion adsorption article binding site biosorption calculation cell wall complex formation controlled study infrared spectroscopy isotherm nonhuman pH priority journal stoichiometry surface property Ulva Adsorption Biomass Copper Glycine Herbicides Hydrogen-Ion Concentration Spectrophotometry, Infrared Ulva Water |
| spellingShingle |
Biosorption Copper Glyphosate Ulva lactuca Argentina Biosorbents Biosorption process Copper adsorption Freundlich models FTIR Glyphosates Green alga Langmuir models Langmuirs Metal uptake Molar ratio Surface area Surface complex Ulva lactuca Water adsorption Adsorption Algae Biosorption Copper Reservoirs (water) Stoichiometry Herbicides copper glyphosate herbicide metal ion adsorption article binding site biosorption calculation cell wall complex formation controlled study infrared spectroscopy isotherm nonhuman pH priority journal stoichiometry surface property Ulva Adsorption Biomass Copper Glycine Herbicides Hydrogen-Ion Concentration Spectrophotometry, Infrared Ulva Water Trinelli, M.A. Areco, M.M. Dos Santos Afonso, M. Co-biosorption of copper and glyphosate by Ulva lactuca |
| topic_facet |
Biosorption Copper Glyphosate Ulva lactuca Argentina Biosorbents Biosorption process Copper adsorption Freundlich models FTIR Glyphosates Green alga Langmuir models Langmuirs Metal uptake Molar ratio Surface area Surface complex Ulva lactuca Water adsorption Adsorption Algae Biosorption Copper Reservoirs (water) Stoichiometry Herbicides copper glyphosate herbicide metal ion adsorption article binding site biosorption calculation cell wall complex formation controlled study infrared spectroscopy isotherm nonhuman pH priority journal stoichiometry surface property Ulva Adsorption Biomass Copper Glycine Herbicides Hydrogen-Ion Concentration Spectrophotometry, Infrared Ulva Water |
| description |
This study investigated the adsorption of glyphosate (PMG) onto the green algae Ulva lactuca. PMG was not adsorbed by U. lactuca but PMG was adsorbed when the process was mediated by Cu(II) with molar ratios Cu(II):PMG ≥ 1.5:1.U. lactuca was characterized by water adsorption surface area, FTIR, SEM and EDS. The Langmuir and Freundlich models were applied. Results showed that the biosorption processes for copper and PMG in the presence of copper were described described by the Langmuir model (qmax=0.85±0.09mmolg-1, KL=0.55±0.14lmmol-1 and qmax=3.65±0.46mmolg-1, KL=0.103±0.03lmmol-1, respectively). Copper adsorption was greater in the presence of PMG than in the absence of the pesticide and the adsorption can only be represented by the Freundlich model (KF=0.08±0.01, 1/n=1.86±0.07).In all cases studied, the maximum metal uptake (qmax) increased with increasing pH. Surface complexes with a stoichiometry ranging from CuPMGCu to CuPMGCu3 are suggested as reaction products of the process.Due to the increasing amounts of PMG applied in Argentina, natural reservoirs present considerable amounts of this herbicide. The value of this work resides in using U. lactuca, a marine seaweed commonly found along coastlines all over the world, as a biosorbent for PMG. © 2013 Elsevier B.V. |
| format |
JOUR |
| author |
Trinelli, M.A. Areco, M.M. Dos Santos Afonso, M. |
| author_facet |
Trinelli, M.A. Areco, M.M. Dos Santos Afonso, M. |
| author_sort |
Trinelli, M.A. |
| title |
Co-biosorption of copper and glyphosate by Ulva lactuca |
| title_short |
Co-biosorption of copper and glyphosate by Ulva lactuca |
| title_full |
Co-biosorption of copper and glyphosate by Ulva lactuca |
| title_fullStr |
Co-biosorption of copper and glyphosate by Ulva lactuca |
| title_full_unstemmed |
Co-biosorption of copper and glyphosate by Ulva lactuca |
| title_sort |
co-biosorption of copper and glyphosate by ulva lactuca |
| url |
http://hdl.handle.net/20.500.12110/paper_09277765_v105_n_p251_Trinelli |
| work_keys_str_mv |
AT trinellima cobiosorptionofcopperandglyphosatebyulvalactuca AT arecomm cobiosorptionofcopperandglyphosatebyulvalactuca AT dossantosafonsom cobiosorptionofcopperandglyphosatebyulvalactuca |
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1782024024733253632 |