Effects of sepiolite nanoparticles on the kinetics of Pb and Cu removal from aqueous solutions and their immobilization in columns with different soil textures

Alvani, Samira; Hojati, Saeid; Landi, A.

doi:10.1016/j.geoderma.2019.05.004

Cited by 28 publications

(5 citation statements)

References 41 publications

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“…Similar to our results from in vitro Al 3+ absorption experiments (Gu et al 2021), L. deliciosus 2 conferred higher initial rate and capacity for Al 3+ absorption than P. tinctorius 715 did. According to the assumption for the pseudo-second order model that the number of available active sites in the absorbent is related to the absorption capacity (Lin et al 2012;Alvani et al 2019), the present results indicate that inoculation with L. deliciosus 2 and P. tinctorius 715 decreased the number of available active sites for Al 3+ in the roots, and more active sites were available in seedlings inoculated with L. deliciosus 2 than with P. tinctorius 715 (Fig. 4, Table 1).…”

Section: Al Absorption Characteristics In Ecm Inoculated Seedlingssupporting

confidence: 51%

“…Root absorption kinetics of Al were studied using the three models (pseudo-first order, pseudo-second order and intraparticle diffusion model) (Lin et al 2012;Alvani et al 2019). Briefly, three assumptions were expressed by the three kinetics models to elucidate the mechanism of metal ion absorption by the absorbent in a liquid absorption system.…”

Section: Al Absorption Kinetics Studymentioning

confidence: 99%

“…4c) indicated that three steps controlled the process of Al 3+ absorption in P. massoniana seedlings with and without ECM fungus (Alvani et al 2019;Sedlakova-Kadukova et al 2019;Gu et al 2021): (1) diffusion on film or externally, which transport Al 3+ from the incubation solution to the outer surface, (2) diffusion of the particle or across the pore, which drives Al 3+ into the interior sites, and (3) internal absorption. The affinity and boundary layer thickness of absorbents for metals is provided by the second linear section's slope and intercept in the intraparticle diffusion model, respectively (Alvani et al 2019;Sedlakova-Kadukova et al 2019). Results in the present study (Fig.…”

Section: Al Absorption Characteristics In Ecm Inoculated Seedlingsmentioning

confidence: 99%

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Differential aluminum tolerance and absorption characteristics in Pinus massoniana seedlings colonized with ectomycorrhizal fungi of Lactarius deliciosus and Pisolithus tinctorius

Jia

Wang

et al. 2023

J. For. Res.

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Plant tolerance to aluminum (Al) toxicity can be enhanced by an ectomycorrhizal (ECM) fungus through biological filtering or physical blockage. To understand the roles of ECM colonization in Al absorption with regard to Al tolerance, Pinus massoniana seedlings were inoculated with either Lactarius deliciosus (L.:Fr.) Gray isolate 2 or Pisolithus tinctorius (Pers.) Coker et Couch isolate 715 and cultivated in an acid yellow soil with or without 1.0 mM Al3+ irrigation for 10 weeks. Biomass production, Al bioaccumulation and transport in seedlings colonized by the two ECM fungi were compared, and the three absorption kinetics (pseudo-first order, pseudo-second order and intraparticle diffusion) models used to evaluate variances in root Al3+ absorption capacity. Results show that both fungi increased aboveground biomass and Al tolerance of P. massoniana seedlings, but L. deliciosus 2 was more effective than P. tinctorius 715. Lower Al absorption capacity, fewer available active sites and decreased affinity and boundary layer thickness for Al3+, and higher Al accumulation and translocation contributed to the increased Al tolerance in the ECM-inoculated seedlings. These results advance our understanding of the mechanisms and strategies in plant Al-tolerance conferred by ECM fungi and show that inoculation with L. deliciosus will better enhance Al tolerance in P. massoniana seedlings used for forest plantation and ecosystem restoration in acidic soils, particularly in Southwest China and similar soils worldwide.

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Section: Al Absorption Characteristics In Ecm Inoculated Seedlingssupporting

confidence: 51%

Section: Al Absorption Kinetics Studymentioning

confidence: 99%

Section: Al Absorption Characteristics In Ecm Inoculated Seedlingsmentioning

confidence: 99%

See 1 more Smart Citation

Differential aluminum tolerance and absorption characteristics in Pinus massoniana seedlings colonized with ectomycorrhizal fungi of Lactarius deliciosus and Pisolithus tinctorius

Jia

Wang

et al. 2023

J. For. Res.

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“…Similarly, it previously reported that vermiculites had a crystal structural unit of M-S-H that could be efficient adsorption Cd and Pb in an aqueous solution (Alexandre-Franco et al, 2011). Moreover, sepiolite (8MgO•12SiO 2 •6H 2 O•nH 2 O) could reduce available Pb from water and soil than microparticles (Alvani et al, 2019). The most popular approach for making M-S-H was to use magnesium oxide and silica fume at a high cost and had considerable mass production limitations (Wang and Fan, 2020).…”

Section: Introductionmentioning

confidence: 81%

The simultaneous removal of cadmium (II) and lead (II) from wastewater with the application of green synthesized magnesium silicate hydrate

Zhang

Liu²,

Shuchuan³

et al. 2023

Front. Earth Sci.

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To the purpose of solving the problems of coal-gangue accumulation in the mine and pollution of cadmium (II) and lead (II) in wastewater, magnesium silicate hydrate (M-S-H) was synthesized from coal-gangue by thermochemical. M-S-H had removed Cd(II) and Pb(II) by adsorption. The characterization of M-S-H and adsorption effects factors, including initial solution pH, initial metal concentration, adsorbent dose, temperature, reaction time, and coexisting ions were explored for adsorption performance. The solution pH was precisely controlled by a pH meter. The adsorption temperature was controlled by a thermostatic gas bath oscillator with an error of ±0.3. These results from this study revealed that M-S-H surface area increased from 8.12 to 26.15 m2/g with a pore volume of 0.12 cm3/g. The maximum adsorptions of Cd(II) and Pb(II) by M-S-H were 59.52 and 83.33 mg g−1, respectively. The adsorption performance for Cd(II) and Pb(II) reached saturation at pH 5, temperature 25°C, M-S-H 6 g/L, reaction time 90 min, and metal concentration 300 mg/L. Cd(II) and Pb(II) adsorption were spontaneous and endothermic and well fitted with the pseudo-second-order kinetic and Langmuir isotherm adsorption models. The adsorption mechanisms were electrostatic interaction, ion exchange, and surface complexation. This research indicated that the synthesized M-S-H from coal gangue was efficiently eliminated metal ions from water, opening up new possibilities for coal gangue reuse.

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“…Figure 5 shows the intraparticle diffusion model for the sorption of Cd(II), Pb(II) and Zn(II). Intraparticle diffusion is the rate controlling step if the slope of the individual line of the plot passes through the origin [31]. Two-line sections are apparent in Figure 5.…”

Section: Sorption Kineticsmentioning

confidence: 99%

Biochar from Maize Hybrid Fermentation Residuelow Cost and Efficient Heavy Metals Sorbent

Tokarčíková

Seidlerová

Motyka

et al. 2019

Ecological Chemistry and Engineering S

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Biochar produced from fermentation residue of maize hybrid was used in untreated form as a sorbent for the removal of Cd(II), Pb(II) and Zn(II) from aqueous solution. The capability of biochar to immobilized ions was investigated by leaching test. Equilibrium between biochar sample and studied elements in solution was reached at a contact time 30 min for Zn(II) and 90 min for Pb(II) and Cd(II). The experimental data were described by pseudofirst-order and pseudo-second-order kinetic model, two- and three-parameter isotherms in non-linear form. The maximum sorption capacity achieved was 30.07 mg·g−1 in the case of Cd(II) ions, 99.44 mg·g−1 in the case of Pb(II) and 40.18 in the case of Zn(II). Biochar developed for this study is comparable to conventional biochar, low cost, non-toxic and experimental results show that is a suitable and efficient sorbent for Cd(II), Pb(II) and Zn(II) removal from aqueous solutions.

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Effects of sepiolite nanoparticles on the kinetics of Pb and Cu removal from aqueous solutions and their immobilization in columns with different soil textures

Cited by 28 publications

References 41 publications

Differential aluminum tolerance and absorption characteristics in Pinus massoniana seedlings colonized with ectomycorrhizal fungi of Lactarius deliciosus and Pisolithus tinctorius

Differential aluminum tolerance and absorption characteristics in Pinus massoniana seedlings colonized with ectomycorrhizal fungi of Lactarius deliciosus and Pisolithus tinctorius

The simultaneous removal of cadmium (II) and lead (II) from wastewater with the application of green synthesized magnesium silicate hydrate

Biochar from Maize Hybrid Fermentation Residuelow Cost and Efficient Heavy Metals Sorbent

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