Increase in Pb and Cd Adsorption by the Application of Peat in a Tropical Soil

Marques, Jéssica Pelinsom; Rodrigues, Valéria Guimarães Silvestre; Raimondi, Isabela Monici; Lima, Jacqueline Zanin

doi:10.1007/s11270-020-04507-z

Cited by 22 publications

(15 citation statements)

References 39 publications

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“…Due to the high content of OM (>90%) and huge adsorptive interfaces (cation exchange capacity >90 cmol(+)/kg), organic soils (peats) have recently been confirmed as very effective sorbents for the immobilisation or removal of Cd (as well as Zn, Pb, Ni, Cr and As) from contaminated soils [5,15] or aqueous ecosystems [16,17], thus decreasing metal availability and reducing phyto-accumulation [5]. Consequently, the NaCl and Cd interactions are likely to differ in OM-rich soils, compared with mineral OM-depleted soils, differentially influencing metal biogeochemistry and crop uptake.…”

Section: Introductionmentioning

confidence: 99%

Growth and Element Uptake by Salt-Sensitive Crops under Combined NaCl and Cd Stresses

Ondrašek

Rengel

Maurović

et al. 2021

Plants

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To test an assumption that organic soil can ameliorate nutritional disorders associated with metal and salinity stresses, we exposed salt-sensitive strawberry and lettuce to four salinity (0–60 mM NaCl) and three contamination (0.3–5 mg Cd/kg) rates in peat (pHH2O = 5.5). The results showed that, even at 20 mM NaCl, salinity stress exerted a dominant effect on rhizosphere biogeochemistry and physiological processes, inducing leaf-edge burns, chlorosis/necrosis, reducing vegetative growth in crops; at ≥40 mM, NaCl mortality was induced in strawberry. Signifiacntly decreased K/Na, Ca/Na and Mg/Na concentration ratios with raising salinity were confirmed in all tissues. The combined CdxNaCl stresses (vs. control) increased leaf Cd accumulation (up to 42-fold in lettuce and 23-fold in strawberry), whereas NaCl salinity increased the accumulation of Zn (>1.5-fold) and Cu (up to 1.2-fold) in leaves. Lettuce accumulated the toxic Cd concentration (up to 12.6 mg/kg) in leaves, suggesting the strong root-to-shoot transport of Cd. In strawberry Cd, concentration was similar (and sub-toxic) in fruits and leaves, 2.28 and 1.86 mg/kg, respectively, suggesting lower Cd root-to-shoot translocation, and similar Cd mobility in the xylem and phloem. Additionally, the accumulation of Cd in strawberry fruits was exacerbated at high NaCl exposure (60 mM) compared with lower NaCl concentrations. Thus, in salinized, slightly acidic and organically rich rhizosphere, pronounced organo- and/or chloro-complexation likely shifted metal biogeochemistry toward increased mobility and phytoavailability (with metal adsorption restricted due to Na+ oversaturation of the caton exchange complex in the substrate), confirming the importance of quality water and soils in avoiding abiotic stresses and producing non-contaminated food.

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Section: Introductionmentioning

confidence: 99%

Growth and Element Uptake by Salt-Sensitive Crops under Combined NaCl and Cd Stresses

Ondrašek

Rengel

Maurović

et al. 2021

Plants

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“…Peat C is exploited for commercial use since its modified form (as liquid humic acid) is widely used as a fertilizer for local crops. The peat C is extracted and placed in piles in the field (Figure 2) to subsequently proceed to air drying (in covered area) and to modification (Marques et al, 2020). Peat C collection area by the company covers a few square kilometers in the municipality.…”

Section: Field Samplingmentioning

confidence: 99%

“…To date, knowledge is still limited, and a complete understanding of the mechanisms involved in adsorption has not been achieved. Although several studies have explored adsorption by peat from temperate and boreal climate zones (e.g., Coupal and Lalancette, 1976;Gosset et al, 1986;Chen et al, 1990;Brown et al, 2000, Qin et al, 2006Kalmykova et al, 2008;Koivula et al, 2009;Bartczak et al, 2018;Egene et al, 2018;Hammi et al, 2019), there are little works using tropical peat deposits (Petroni, 2004;Balasubramanian et al, 2009;Abat et al, 2012;Lima, 2017;Santos et al, 2018;Marques et al, 2020). Nonetheless, interest in PTE adsorption by tropical peat is increasing due to its low cost and high availability.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have shown good results regarding the adsorption of metals to Brazilian peats from various river basins in the states of Sergipe, Bahia, São Paulo, Rio de Janeiro and Santa Catarina (Santos, 1998;Lamim et al, 2001;Franchi, 2004;Petroni, 2004;Crescêncio Junior, 2008;Batista et al, 2009;Cerqueira et al, 2012;Oliveira et al, 2015;Carvalho, 2015;Marques et al, 2020). However, studies are necessary to evaluate the adsorption capacity of peat from the Mogi-Guaçu river basin, since this is a strategically located area (industrial area with high potential for Pb, Zn and Cd contamination) containing peatlands with easy access, which would facilitate the use of and reduce the acquisition costs associated with this reactive material.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of the use of tropical peats as local alternative materials for the adsorption of Pb, Zn and Cd: An equilibrium study

et al. 2021

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Peat is an organic material that has been widely used as an efficient and low-cost adsorbent. As many studies tend to focus on temperate peats, there is a lack of knowledge about the adsorption mechanism of tropical peats. This paper investigates the use of two Brazilian peats (Cravinhos - C and Luis Antônio - LA) from the Mogi-Guaçu river basin for the adsorption of lead (Pb), zinc (Zn), and cadmium (Cd), in order to contribute to the use of local and easy access materials to remediate contaminated sites. The peats adsorbed a high percentage of cations, especially Pb cations (100.0-46.3%), with commercial peat C showing higher adsorption than peat LA. The removal order was Pb2+ > Cd2+ ≥ Zn2+ for C and Pb2+ > Zn2+ > Cd2+ for LA. The batch data for both peats and for all metals were better fit by the Langmuir isotherm, with adsorption capacities (qm) for Pb, Zn, and Cd of 37.3134, 29.0674 and 21.2890 mmol kg-1 in peat C and 21.7391, 14.2550 and 3.6460 mmol kg-1 in LA, respectively, values comparable to those of other peats and biosorbents. The studied peats are considered efficient, alternative and low-cost adsorptive materials for these metals. The proximity of peatlands to areas with high potential for contamination necessitates the use of local materials to reduce remediation costs.

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“…The researchers concluded that soil-peat mixtures were capable of minimizing the potentially toxic metal contamination. In addition, these are affordable and cheap materials [19].…”

Section: Introductionmentioning

confidence: 99%

Testing of Natural Sorbents for the Assessment of Heavy Metal Ions’ Adsorption

et al. 2021

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Nowadays, the sorption-oriented approach is on the agenda in the remediation practices of lands contaminated with heavy metals. The current growing quantity of research accounts for different sorbets. However, there is still a lack of studies utilizing the economic criteria. Therefore, to ensure a wide application of opportunities, one of the necessary requirements is their economic efficiency in use. By utilizing these criteria, this manuscript researches the generally accepted natural sorbents for the assessment of heavy metal ions’ adsorption, such as peat, diatomite, vermiculite and their mixtures in different proportions and physical shapes. The methodological base of the study consists of the volumetric (titrimetric) method, X-ray fluorescence spectrometry and atomic absorption spectrometry. Experimental tests show a certain decline in the efficiency of heavy metal ions’ adsorption from aqueous salt solutes as follows: granular peat–diatomite > large-fraction vermiculite > medium-fraction vermiculite > non-granular peat–diatomite > diatomite.

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Increase in Pb and Cd Adsorption by the Application of Peat in a Tropical Soil

Cited by 22 publications

References 39 publications

Growth and Element Uptake by Salt-Sensitive Crops under Combined NaCl and Cd Stresses

Growth and Element Uptake by Salt-Sensitive Crops under Combined NaCl and Cd Stresses

Assessment of the use of tropical peats as local alternative materials for the adsorption of Pb, Zn and Cd: An equilibrium study

Testing of Natural Sorbents for the Assessment of Heavy Metal Ions’ Adsorption

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