Caracterización de la biomasa inactiva de Aspergillus niger O-5 como sorbente de Pb (II)

Horrutiner, Yusleydi Enamorado; Tagle, Margarita Villanueva; Díaz, Ianeya Hernández; Pérez, Orquídea Coto; Alfonso, Mario Simeón Pomares

doi:10.1590/s0100-40422011000700007

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…The pH in the culture medium is a parameter that would normally be taken into account when an analytical method is developed. Horrutiner et al have determined the importance of pH on the growth of Aspergillus niger O-5 grow, in a culture medium at pH values of 5 and 7 [88]. Punctually, the Pb sorption capacity of the biomass was compared at these pH values and the highest sorption was obtained when fungi were grown at pH 7.…”

Section: Fungimentioning

confidence: 99%

“…Furthermore, it has been reported that treatment of these strains with NaOH prior to contact with the sample, produced an increase in the biosorption efficiency of Pb. This last step causes the release of masked binding sites for proteins and lipids, and enzymes of putrefaction are eliminated thus increasing the likelihood of binding to metals [88].…”

Section: Fungimentioning

confidence: 99%

See 1 more Smart Citation

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

Escudero

Maniero

Agostini

et al. 2016

TrAC Trends in Analytical Chemistry

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Section: Fungimentioning

confidence: 99%

Section: Fungimentioning

confidence: 99%

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

Escudero

Maniero

Agostini

et al. 2016

TrAC Trends in Analytical Chemistry

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“…9,10,18,19 A great variety of adsorbents have been tried and studied, different types of biomass and organic adsorbents as agricultural by-products and its conversion to activated carbon, [16][17][18]20 biopolymers, 17,21 fungal biomasses have been used with 80 to 100 % percentage retention. 22 Rice straw derived biochar have been used as amendment in soils for Pb immobilization, avoiding its run off through the soil and protect the rivers. 23 The use of Nanomaterials for adsorption processes have been widely reported, their physicochemical properties as small size and large surface area, make them suitable for water treatment systems.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Pb (II) ions on variable charge oxidic calcined substrates with chemically modified surface

Prato,

Millán,

Rangel

et al. 2024

F1000Res

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Background The paper describes lead ion adsorption on variable charge oxidic calcined substrates with chemically modified surfaces. Amphoteric oxides of iron, aluminum, titanium, and manganese, change their surface electric charge after acid or alkaline treatment, letting cationic or anionic adsorption reactions from aqueous solutions. This property allows using them as adsorbing substrate for heavy metals retention in water treatment systems. Methods Substrate was prepared by extruding cylindrical strips from a saturate paste of the oxidic lithological material-OLM; dries it up and thermally treated by calcination. The study was performed by triplicated trial, on batch mode, using 2 grams samples of treated with NaOH 0.1N and non-treated substrate. Lead analysis was performed by AAS-GF. Freundlich and Langmuir models were used to fit results. Comparing differential behavior between treated and non-treated substrates showed the variable charge nature of the OLM. Results Results show L-type isotherms for the adsorption of Pb(II) ions on the activated substrate, suggesting good affinity between Pb(II) ions and OLM’s surface. Average value of adsorption capacity (K) for activated substrate (1791.73±13.06), is around four times greater than the non-activated substrate (491.54±31.97), during the adsorption reaction, 0.35 and 0.26 mmolH+ of proton are produced on the activated and non-activated substrate respectively using a 1 mM Pb(II) solution and 72.2 and 15.6 mmolH+ using a 10 mM Pb(II) solution. This acidification agrees with the theoretic model of transitional metals chemisorption on amphoteric oxides, present in lithological material used for the preparation of adsorbent substrates, confirming the information given by the L-type isotherms. Conclusions Results suggest that these variable charge oxidic adsorbent substrate show great potential as an alternative technique for water treatment at small and medium scale using granular filtration system. The easiness and low price make them suitable to apply in rural media where no treating water systems is available.

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Study of the Pt(IV) sorption on the Aspergillus niger O-5 biomass for remediation and/or analytical purposes

Lombana-Fraguela

Pomares-Alfonso

Govin-Sanjudo

et al. 2020

Bioremediation Journal

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Caracterización de la biomasa inactiva de Aspergillus niger O-5 como sorbente de Pb (II)

Cited by 5 publications

References 12 publications

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

Biological substrates: Green alternatives in trace elemental preconcentration and speciation analysis

Adsorption of Pb (II) ions on variable charge oxidic calcined substrates with chemically modified surface

Study of the Pt(IV) sorption on the Aspergillus niger O-5 biomass for remediation and/or analytical purposes

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