Chemical and Ecotoxicological Monitoring of Discharge Water from a Metal-Finishing Factory

Druart, Céline; Morin‐Crini, Nadia; Euvrard, Élise; Crini, Grégorio

doi:10.1007/s40710-016-0125-7

Cited by 13 publications

(17 citation statements)

References 34 publications

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“…In order to determine the toxicity of the effluents, a standardized bioassay based on the mobility of Daphnia magna was used . The toxicity of five samples before and after treatment were studied.…”

Section: Methodsmentioning

confidence: 99%

Metals in aqueous solutions and real effluents: biosorption behavior of a hemp‐based felt

Loiacono

Crini

Chanet³

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND In this study, a hemp‐based material in the form of a felt was used to adsorb metals in individual aqueous solutions and in polycontaminated effluents using the batch method. The factors affecting the biosorption process were initial metal concentration, biosorbent dosage, contact time and pH. RESULTS In controlled conditions, results showed that: (i) the felt exhibited high adsorption capacities towards metals in the following order: Pb > Cd > Cu > Zn > Co ∼ Fe ∼ Ni ∼ Cr ∼ Al ∼ Mn; (ii) no significant differences were observed for the three salts used (sulfate, chloride and nitrate); (iii) the process was rapid: 10 min were sufficient to attain equilibrium; (iv) the biosorption efficiency increased considerably with the increase of the biosorbent dosage; and (v) the adsorption capacities were independent of pH between 4 and 6. The maximum adsorption capacities for Cd, Cu, Zn, Co, Fe, Ni, Cr, Al and Mn were 27.47, 14.64, 10.59, 7.99, 7.85, 7.87, 6.53, 6.38 and 4.55 mg g–1, respectively. Interesting results also were obtained for real polymetallic effluents. Ecotoxicological tests also confirmed the efficiency of the biosorption to radically decrease the effluent toxicity. CONCLUSIONS Based on these results, hemp‐based felt could serve as a novel and efficient biosorbent material for pollutant removal from industrial effluents. © 2018 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Metals in aqueous solutions and real effluents: biosorption behavior of a hemp‐based felt

Loiacono

Crini

Chanet³

et al. 2018

J of Chemical Tech & Biotech

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“…To determine the ability of the material to treat inorganic and organic load, several batch experiments were carried out with two kinds of solutions: spiked solutions (SS) containing different substances at several concentrations that are typical of ST discharge waters (DWs) [34] and real ST industrial DWs themselves.…”

Section: Methodsmentioning

confidence: 99%

Cross-linked cyclodextrin-based material for treatment of metals and organic substances present in industrial discharge waters

Euvrard¹,

Morin‐Crini²,

Druart³

et al. 2016

Beilstein J. Org. Chem.

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SummaryIn this study, a polymer, prepared by crosslinking cyclodextrin (CD) by means of a polycarboxylic acid, was used for the removal of pollutants from spiked solutions and discharge waters from the surface treatment industry. In spiked solutions containing five metals, sixteen polycyclic aromatic hydrocarbons (PAH) and three alkylphenols (AP), the material exhibited high adsorption capacities: >99% of Co2+, Ni2+ and Zn2+ were removed, between 65 and 82% of the PAHs, as well as 69 to 90% of the APs. Due to the structure of the polymer and its specific characteristics, such as the presence of carboxylic groups and CD cavities, the adsorption mechanism involves four main interactions: ion exchange, electrostatic interactions and precipitation for metal removal, and inclusion complexes for organics removal. In industrial discharge waters, competition effects appeared, especially because of the presence of calcium at high concentrations, which competed with other pollutants for the adsorption sites of the adsorbent.

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“…From the environmental point of view, the metals that are of greatest concern are those which, either by their presence or their accumulation, can have a toxic or inhibitory effect on living organisms. In France, the main metals to affect the environment include cadmium, copper, and nickel . Zinc, which is one of metals the most frequently present in industrial wastewaters, is also on the list of priority pollutants defined by the French Water Agency .…”

Section: Introductionmentioning

confidence: 99%

“…Zinc, which is one of metals the most frequently present in industrial wastewaters, is also on the list of priority pollutants defined by the French Water Agency . Manganese and cobalt were studied in this work also due to their common presence in discharge waters from the metal industry . These six metals are considered as trace elements because of their presence at trace concentrations (from ppb to a few ppm) in various environmental matrices, but are also potentially toxic due to their tendency to bio‐accumulate and persist in the environment .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous removal of Cd, Co, Cu, Mn, Ni and Zn from synthetic solutions on a hemp‐based felt: Experimental design

Loiacono

Morin‐Crini

Cosentino

et al. 2016

J of Applied Polymer Sci

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International audienceThe potential of using a hemp-based material in felt form as an adsorbent for removing the metals from aqueous mixturesof Cd, Co, Cu, Mn, Ni, and Zn is investigated in the present study using batch experiments at an initial pH between 4.9 and5.2. The operating variables studied were initial metal concentration, adsorbent dosage, contact time, agitation speed, temperature,presence of NaCl, and pH. Experiments showed that this nonconventional adsorbent exhibited interesting capacities: 1 g of hemp wasable to remove 7.4 mg of metals at a concentration of 25 mg/L for each metal present in 100 mL of solution. Kinetic results showedthat the process was uniform and rapid: adsorption of metals reached equilibrium in 10 min. The adsorption capacities were almostindependent of temperature between 25 and 50 8C and pH between 4 and 6, but dependent on the presence of electrolytes such asNaCl. Interesting results were also obtained for real polymetallic effluents. All these findings are significant for the future developmentof hemp-based materials for use as bag filters for metal removal from industrial effluents

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Chemical and Ecotoxicological Monitoring of Discharge Water from a Metal-Finishing Factory

Cited by 13 publications

References 34 publications

Metals in aqueous solutions and real effluents: biosorption behavior of a hemp‐based felt

Metals in aqueous solutions and real effluents: biosorption behavior of a hemp‐based felt

Cross-linked cyclodextrin-based material for treatment of metals and organic substances present in industrial discharge waters

Simultaneous removal of Cd, Co, Cu, Mn, Ni and Zn from synthetic solutions on a hemp‐based felt: Experimental design

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