Toxicity potential of disinfection agent in tannery wastewater

Tišler, Tatjana; Zagorc-Končan, Jana; Cotman, Magda; Drolc, Andreja

doi:10.1016/j.watres.2004.05.011

Cited by 39 publications

(18 citation statements)

References 6 publications

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“…Generally, all effl uents contain N values in the range between 3 and 10 mg per L [15], that are the limit values specifi ed for directly discharge into the surface water. The COD values of soaking effl uents were determined lower than the previously reported values [42,48]. With the use of 1 wt% of tannic acid instead of bactericide, the COD values of soaking effl uents were reduced approximately by 33% ( Table 2).…”

Section: Nitrogen and Cod Values Of Soaking Effl Uentsmentioning

confidence: 67%

“…Their use in leather industry has become the focus because of the chemical safety and consumer health issues considering their toxic effect for wastewater, aquatic organisms and environment. The toxicity of bactericides and fungicides in tannery effl uents was confi rmed by determination of their extremely high acute and chronic toxic effects on bacteria, algae, zebra fi sh and daphnids such as Daphnia magna and Danio rerio [48]. They may impair fertility, cause harm to the unborn child and potential heritable genetic damage [30].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Eco-Friendly Soaking Process Using Tannic Acid as an Alternative Bactericide

Zengin¹,

Çolak²,

Zengin³

et al. 2014

Archives of Environmental Protection

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Eco-friendly leather processes based on the usage of natural products have become a potentially attractive issue for leather industry during the last few decades. Synthetic protective chemicals like bactericides used in most soaking process are known as hazardous substances and cause tannery effl uents with high concentrations of Chemical Oxygen Demand (COD). In the present study, the effect of tannic acid on microorganisms, skin, wool and effl uent were investigated in order to demonstrate the applicability of tannic acid in soaking process instead of commonly used bactericides. The bacterial load (cfu/ml), COD and Nitrogen Content (N) of the soaking effl uents and Total Kjeldahl Nitrogen (TKN) content of skins and wools were investigated. Application of 0.5 and 1 wt% tannic acid concentrations was more effective than commercial bactericide, while comparable results were achieved by 0.1 and 0.3 wt% tannic acid. The application of tannic acid for soaking process resulted in lower COD and N values of effl uents. The results show that tannic acid has the potential to be an alternative, eco-friendly bactericide for leather industry by reducing the pollution of leather soaking process.

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Section: Nitrogen and Cod Values Of Soaking Effl Uentsmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

Eco-Friendly Soaking Process Using Tannic Acid as an Alternative Bactericide

Zengin¹,

Çolak²,

Zengin³

et al. 2014

Archives of Environmental Protection

View full text Add to dashboard Cite

show abstract

“…According to the reported literature, leather industries are associated with water and land contamination and number of health problem (Battista et al 1995;Bianchi et al 1997;Mikoczy et al 1996). As a result of leather industry pollution, a large number of health effects have been occurring to crops, aquatic, terrestrial biota and humans (Barnhart 1997), toxicity on Vibrio fischeri (Jochimsen and Jekel 1997) and Daphnia magna (Tisler et al 2004). To overcome these problems, various literatures have been reported for the assessment of leather industry wastewater (Zhanga and Zhang 2007), evaluation of chromium toxicity (Oral et al 2007;Scholz and Lucas 2003;Cassano et al 2001Cassano et al , 2003Meric et al 2005;Viero et al 2002), and removal of endocrine disrupting compounds (Changa et al 2009) present in the wastewater from leather industry.…”

Section: Introductionmentioning

confidence: 99%

Study on identification of leather industry wastewater constituents and its photocatalytic treatment

Natarajan

Bajaj

et al. 2013

Int. J. Environ. Sci. Technol.

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The present research work was intended to find out the useful information on identification, separation and photocatalytic degradation of organic compounds present in leather industry wastewater. The separation of organic compounds present in leather industry wastewater was carried out by solvent extraction. The separated crude extracted products were purified through column chromatography and characterized by UV-vis spectrophotometer, gas chromatography-mass spectrophotometer, liquid chromatographymass spectrophotometer, 1 H and 13 C Fourier-transform nuclear magnetic resonance spectroscopy. The elemental analysis of wastewater and solid residue was carried out by inductively coupled plasma-optical emission and X-ray fluorescence spectroscopy. The organic compounds such as nonadec-1-ene, 2-phenylethanol, 2,4-di-tert-butylphenol and other organic compounds in the leather industry wastewater were identified. Out of these organic compounds, 2-phenylethanol was photocatalytically degraded using standard Degussa P-25 TiO 2 (100 mg) photocatalyst under the irradiation of UV light. Result has been shown that 2-phenylethanol was transformed into 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-methylphenol then the prolonged time (30 h) irradiation leads to 100 % degradation of 2-phenylethanol. Further possible degradation mechanism of 2-phenylethanol was proposed based on the electrospray ionization mass spectrometry analysis of degraded samples. The degradation of 2-phenylethanol was confirmed by chemical oxygen demand analysis of degraded samples. The physicochemical parameters such as pH, color, chemical oxygen demand, total dissolved solids, electrical conductivity and ionic chromatography analysis of the leather industry wastewater were also measured.

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“…A number of toxicity monitoring and removal studies have been performed on leather tanning wastewater including acute toxicity on Vibrio fisheri , Daphnia magna [2,[10][11], sea urchins and marine algae [12].…”

Section: Introductionmentioning

confidence: 99%

Toxicity reduction in leather tanning wastewater by improved coagulation flocculation process

2013

Global NEST Journal

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The wastewater of leather industry which is one of the most widespread industries having large amount of water consumption and very high pollution loads, may be characterized by several key parameters including toxic pollutants exhibiting toxicity. Therefore the effluent of leather tanning industry must be handled carefully during both treatment plant design and operation.The aim of this study was to improve the coagulation process for toxicity reduction of raw wastewater taken from a leather tanning district central treatment plant (Solofra, (Avellino, Southern Italy). A series of jar test experiments on three samples taken between February and July 2005, were performed using ferric chloride, ferrous chloride, aluminium sulphate and polyaluminium ferric chloride (PAFC).The optimum coagulation conditions for the first sample were determined as 8.5 pH and 900 mg l -1 dose of PAFC with the addition of Ca(OH) 2 which resulted in a 76% COD and 98% TSS removal and more than 50% of D. magna immobilization (at 50% dilution) reduction. Coagulation experiments performed on second and third samples showed that PAFC resulted in the highest COD removal among the coagulants tested The results that PAFC, recently developed coagulant, is the most promising one for leather tanning wastewater, thus, improved coagulation followed by biological treatment can result in safe effluent to aquatic environment.

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Toxicity potential of disinfection agent in tannery wastewater

Cited by 39 publications

References 6 publications

Eco-Friendly Soaking Process Using Tannic Acid as an Alternative Bactericide

Eco-Friendly Soaking Process Using Tannic Acid as an Alternative Bactericide

Study on identification of leather industry wastewater constituents and its photocatalytic treatment

Toxicity reduction in leather tanning wastewater by improved coagulation flocculation process

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