Colloidal Mobilization and Fate of Trace Heavy Metals in Semi-Saturated Artificial Soil (OECD) Irrigated with Treated Wastewater

Pontoni, Ludovico; Hullebusch, Eric D. van; Péchaud, Yoan; Fabbricino, Massimiliano; Esposito, Giovanni; Pirozzi, Francesco

doi:10.3390/su8121257

Cited by 22 publications

(16 citation statements)

References 36 publications

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“…Such behavior was related to the presence of three-dimensional structure of the DOM, associated to the sequestration of aromatic substances into the inner hydrophobic core (Pan et al, 2012). It was supposed, in fact, that this structure made the aromatic protons to have different relaxation times (Gil et al, 1997;Lopes et al, 2000), resulting in the observed broad unresolved peaks (Lam and Simpson, 2008;Pontoni et al, 2016a).…”

Section: Characterization Of Dom Released From Corkmentioning

confidence: 99%

Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution

Pirozzi

Pontoni

Fabbricino

et al. 2020

Journal of Cleaner Production

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The paper presents an experimental study aimed at investigating the mechanism responsible for Bisphenol A adsorption on natural cork, and the role played on process kinetics by the organic matter released from the cork. Obtained data show that natural cork has a good affinity toward Bisphenol A, with removal efficiency being as high as 75% in less than 24 h. The adsorption process is characterized by a fast-initial rate which tends to reduce progressively, and follows a pseudo second order model equation. Statistical physical analysis allows for obtaining a molecular description of the adsorption, which is shown to take place through a single anchorage point, perpendicularly to the adsorbent surface. Nuclear magnetic resonance spectroscopy and florescence analysis reveal that the colloidal organic matter released from the cork interacts with Bisphenol A; it also plays a relevant role in the slowing down of the adsorption rate, as it competes with cork adsorption sites for Bisphenol A. Organic matter is found to be highly heterogenous, presenting at the same time carbohydrates, aromatic and aliphatic domains. Such moieties interact stably with the contaminant in the solution probably due the establishment of dispersive forces (e.g. π-stacking) which sequestrate Bisphenol A into the inner hydrophobic core of the organic matter three-dimensional structure.

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Section: Characterization Of Dom Released From Corkmentioning

confidence: 99%

Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution

Pirozzi

Pontoni

Fabbricino

et al. 2020

Journal of Cleaner Production

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“…It found significant correlations between heavy metal concentration in soils and the edible parts of plants for Cd, Cu, Pb, and Zn. In particular, the concentrations of Cd, Cr, and Ni exceeded regulatory limits set by the State Environmental Protection Administration [21]. Similar issues are known to arise in the proximity of metal ore mines.…”

Section: Introductionmentioning

confidence: 81%

“…Studies by Fliessbach et al (1994) and Khan et al (2000) show the negative effects on soil productivity resulting from heavy metal contamination [17][18][19]. Furthermore, Pontoni et al (2016a,b) studied the accumulation, mobility, and fate in soil of trace amounts of Ni, Cd, Cu, and Zn and found, inter alia, that the metals accumulate mostly in the top soil layer and that their accumulation pattern depends on the mobility of colloids in the case of Ni, Cd, and Cu, while for Zn the wastewater content of dissolved organic matter and its salinity played greater roles [20,21].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Soil and Mandarin Orange Plants Treated with Heavy Metals Found in Oilfield-Produced Wastewater

Zhang

Cortes

et al. 2018

Sustainability

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Despite a declining trend, California remains a significant oil-producing state. For every barrel of crude oil, an average of 15 barrels of oilfield produced water (OPW) is generated, some of which is used to boost freshwater sources for crop irrigation in the agriculturally important Central Valley. OPW is known to contain salts, metals, hydrocarbons, alkylphenols, naturally radioactive materials, biocides, and other compounds from drilling and production processes. Less is known about the potential uptake and accumulation of these compounds in crops and soil irrigated with OPW. In this study, 23 potted mandarin orange plants were irrigated two to three times weekly (depending on season) with water containing three different concentrations of the known OPW heavy metals barium, chromium, lead, and silver. Seven sets of samples of soil and leaves and 11 fruits were collected and processed using microwave-assisted digestion (EPA Method 3051A). Processed samples were analyzed using inductively coupled plasma-optical emission spectroscopy (ICP-OES). Analysis of variance (ANOVA) and covariance (ANCOVA) coupled with Tukey's honest significant difference test were used to examine the effects of metal concentrations in the irrigation water and number of watering days, respectively, on the metal concentrations in the soil, leaf, and fruit samples. Accumulation of barium in soil and leaves was strongly positively associated with sample and number of watering days, increasing nearly 2000-fold. Lead also showed an upward trend, increasing up to 560-fold over the baseline level. Total chromium showed an increase in the soil that tapered off, but less consistent results in the leaves and fruit. The silver results were more volatile, but also indicated at least some level of accumulation in the tested media. The smallest absolute accumulation was observed for chromium. Concentrations in the fruit were highest in the peel, followed by pith and juice. Accumulation of all heavy metals was generally highest in the soil and plants that received the highest irrigation water concentration. Considering the potential for adverse human health effects associated with ingesting soluble barium contained in food and drinking water, and to a lesser extent chromium and lead, the study signals that it is important to conduct further research into the accessibility and bioavailability of the tested heavy metals in the soil and whether they pose risks to consumers.

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“…TMs concentrations were chosen to be well below the threshold values suggested in the wastewater quality guidelines for agricultural use by the Food and Agriculture Organization of the United Nations (FAO) [3]. In details the different synthetic reclaimed wastewater solutions [4]were obtained dissolving analytical grade CuCl 2 ·2H 2 O (Carlo Erba Reagenti, Italy), NiCl 2 ·6H 2 O (Sigma-Aldrich, USA), and ZnCl 2 (Applichem, Germany) and 1000 ppb Cd analytical standard (Carlo Erba Reagenti, Italy), in analytical grade HNO 3 1% (J.T. Baker, USA) solutions.…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Data of OECD soil and leachate resulting from irrigation with aqueous solution containing trace metals at increasing sodium concentration

et al. 2019

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The accumulation of trace metals in soils is one of the main drawbacks when reclaimed waters are used as irrigation sources in agriculture. Such secondary water sources often also contain high levels of salinity and in detail sodium. How the presence of sodium influences the fate of trace metals in the environment is still obscure and of primary importance in defining sustainable agricultural management guidelines. Standard OECD soil columns were subjected to 25 days irrigation with aqueous solutions containing trace concentrations of Cd, Cu, Ni and Zn at increasing sodium content. The dataset is supplementary to the data presented and discussed in “Effect of sodium concentration on mobilization and fate of trace metals in standard OECD soil” [1]. The leachates collected from the columns were deeply characterized in terms of concentration of metals, organic (monitored through UV-VIS, 3DEEM, E 4 /E 6 ratio, COD) and inorganic matter (monitored as Al concentration). The dataset was analyzed by PCA and “Paerson” correlation coefficient.

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Colloidal Mobilization and Fate of Trace Heavy Metals in Semi-Saturated Artificial Soil (OECD) Irrigated with Treated Wastewater

Cited by 22 publications

References 36 publications

Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution

Effect of organic matter release from natural cork used on bisphenol a removal from aqueous solution

Experimental Analysis of Soil and Mandarin Orange Plants Treated with Heavy Metals Found in Oilfield-Produced Wastewater

Data of OECD soil and leachate resulting from irrigation with aqueous solution containing trace metals at increasing sodium concentration

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