Chromium bioavailability in aquatic systems impacted by tannery wastewaters. Part 1: Understanding chromium accumulation by indigenous chironomids

Vignati, Davide A.L.; Ferrari, B.; Roulier, Jean-Louis; Coquery, Marina; Szalińska, Ewa; Bobrowski, Andrzej; Czaplicka, Anna; Kownacki, Andrzej; Dominik, Janusz

doi:10.1016/j.scitotenv.2018.10.259

Cited by 17 publications

(13 citation statements)

References 61 publications

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“…The leather tanning industry has been taken into consideration concerning its environmental impact [3,4]. Tanning is the most polluting operation during the leather making process [4,5], because the predominant leather tanning method is based on the use of chromium salts, specifically trivalent chromium salts, such as chromium(III) sulfate, which is the most widely used chemical in tanneries [6][7][8][9]. About 60% of the total amount of chromium is consumed during the tanning process by reaction with animal skin.…”

Section: Introductionmentioning

confidence: 99%

Tannery Effluent Treatment by Nanofiltration, Reverse Osmosis and Chitosan Modified Membranes

et al. 2020

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The objective of this work is to develop an appropriate technology for environmentally sound membrane-based purification of a tannery effluent assuring, simultaneously, the recovery of chromium, considered as the most hazardous inorganic water pollutant extensively used in leather tanning. A comparison between the permeate fluxes obtained during treatment of a synthetic tannery effluent through nanofiltration (NF270 and NF90 membranes) and reverse osmosis (BW30 and SW30) membranes was first performed. Then, a dedicated polymeric membrane was prepared by coating chitosan (cs) on a polyethersulfone (PES) microfiltration membrane (cs-PES MFO22) support. The resulting membrane was characterized by Fourier Transforms Infrared Spectroscopy Attenuated Total Reflectance (FTIR-ATR), Emission Scanning Electronic Microscopy (SEM) to confirm the process of surface modification and cross-linking of chitosan with glutaraldehyde. This membrane was found to be highly effective for chromium removal (>99%), which was more than eight times higher in reference to monovalent cations (e.g., Na+ and K+) and more than six times higher in reference to the divalent cations (Mg2+ and Ca2+) studied. The reverse osmosis permeate conforms to local Algerian regulations regarding being discharged directly into the natural environment (in this case, Reghaia Lake) or into urban sewers linked to wastewater biological treatment stations. While the SW30 membrane proved to be the most effective for purification of the tannery effluent, the chitosan modified membrane proved to be appropriate for recovery of chromium from the reverse osmosis concentrate.

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Section: Introductionmentioning

confidence: 99%

Tannery Effluent Treatment by Nanofiltration, Reverse Osmosis and Chitosan Modified Membranes

et al. 2020

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“…However, the bioaccumulation factor (BASF) calculated in this study for Cr was low, as was the potential bioaccumulation factor (PBF) (Table 2). In the study of Vignati et al (2019), the Cr bioaccumulation factor value for the Chironomus sp. in the bottom sediment of the Czorsztyn reservoir (compensating reservoir for the Ro_ znów reservoir) was higher and ranged from 0.1 to 1.3 (Vignati et al, 2019).…”

Section: Correlation and Pac Analysesmentioning

confidence: 99%

“…In the study of Vignati et al (2019), the Cr bioaccumulation factor value for the Chironomus sp. in the bottom sediment of the Czorsztyn reservoir (compensating reservoir for the Ro_ znów reservoir) was higher and ranged from 0.1 to 1.3 (Vignati et al, 2019). The higher bioaccumulation factor value may be due to the fact that Chironomus sp.…”

Section: Correlation and Pac Analysesmentioning

confidence: 99%

Mobility, ecotoxicity, bioaccumulation and sources of trace elements in the bottom sediments of the Rożnów reservoir

Szara-Bąk

Baran

Klimkowicz‐Pawlas

et al. 2021

Environ Geochem Health

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The aim of the study was to use of geochemical, chemical, ecotoxicological and biological indicators for a comprehensive assessment of ecological risks related to the mobility, ecotoxicity and bioavailability of trace elements in the bottom sediment of the Rożnów reservoir. The study found three elements deserving attention in the sediments: cadmium, nickel and chromium. Cadmium proved to be the most mobile and bioavailable, although the total cadmium content and geochemical indicators did not reveal any risk to organisms. Geochemical indicators showed that the sediments are contaminated with nickel and chromium, but both elements had a low bioaccumulation factor. Fractional analysis also revealed relatively low mobility of Cr and Ni and a higher potential risk of bioavailability for nickel. Most of the tested sediment samples had low toxicity in relation to the tested organisms. For H. incongruens, 11% of the samples were non-toxic, 50% of the samples had low toxicity, and 39% of the samples were toxic. For A. fischeri, no toxicity was found in 7% of the samples, low toxicity in 76% of the samples and toxicity in 17% of the sediment samples. The As, Cd, Cu content in the F1 fraction correlated significantly positively with the content of these metals in mussel tissues. Both biotesting and chemical analysis can reveal a potential risk to aquatic organisms. For a real assessment of the ecological risks associated with trace elements, it is necessary to use bioindicators taken from the environment and exposed to trace elements in situ.

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“…In particular, Cr(III) is used in the form of chromium sulphate Cr 2 (OH) 2 (SO 4 ) 2 for the conversion of collagen from skin into commercial leather. This process results in the production of high wastewater volumes with appreciable chromium content [1] that increases the ecotoxicological impact of the tannery effluents [2]. Wastewater treatment is thus mandatory before discharge this water stream, which must possess physicochemical characteristics that conform with local regulations for a safe discharge into the ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Cr(III) from Tannery Effluents by Diafiltration Using Chitosan Modified Membranes

Zakmout

Sadi

Велизаров

et al. 2021

Water

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The selective recovery of chromium remaining in tannery effluents after the leather tanning process is highly desirable to potentiate its reuse, simultaneously minimizing the ecotoxicity of these effluents. To the best of our knowledge, this work evaluates for the first time the ability of a chitosan-based membrane for selective recovery of chromium from a tannery wastewater by subsequent diafiltration and selective chromium desorption, envisaging their integration after tannery wastewater treatment by reverse osmosis (RO). A polyethersulfone (PES) microfiltration membrane top-coated with a chitosan layer (cs-PES MF022) was used for selective recovery of Cr(III), from concentrate streams obtained by treatment of synthetic and real tannery effluents through reverse osmosis (RO), through a diafiltration process. The diafiltration of the RO concentrates was conducted by an intermittent addition of water acidified to pH 3.6. The prepared cs-PES MF022 membranes were able to retain 97% of the total mass of Cr(III) present in the RO concentrates, from a real tannery effluent, with a selectivity of 4.2 and 5 in reference to NH4+ and Cl−, respectively, 12.9 and 14.6 in reference to K and Na, and > 45 in reference to Mg, Ca, and S. Such a high selectivity is explained by the preferential adsorption of Cr(III) onto chitosan, and by the relatively high permeability of cs-PES MF022 membranes to the other ionic species. Proof of concept studies were performed to investigate the desorption of Cr(III) at pH 2 and 5.8. A higher Cr(III) desorption degree was obtained at pH 2, leading to a final solution enriched in Cr(III), which may be re-used in tannery operations, thus improving the process economy and reducing the hazardous impact of the effluents discharged by this industry.

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Chromium bioavailability in aquatic systems impacted by tannery wastewaters. Part 1: Understanding chromium accumulation by indigenous chironomids

Cited by 17 publications

References 61 publications

Tannery Effluent Treatment by Nanofiltration, Reverse Osmosis and Chitosan Modified Membranes

Tannery Effluent Treatment by Nanofiltration, Reverse Osmosis and Chitosan Modified Membranes

Mobility, ecotoxicity, bioaccumulation and sources of trace elements in the bottom sediments of the Rożnów reservoir

Recovery of Cr(III) from Tannery Effluents by Diafiltration Using Chitosan Modified Membranes

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