Vegetable and synthetic tannins induce hormesis/toxicity in sea urchin early development and in algal growth

Nicola, Elena; Meriç, Süreyya; Gallo, M.; Iaccarino, Mario; Rocca, Claudio Della; Lofrano, Giusy; Russo, T.; Pagano, Giovanni

doi:10.1016/j.envpol.2006.06.018

Cited by 58 publications

(27 citation statements)

References 27 publications

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“…Tannins are natural polyphenols that commonly exist in wastewater from forestry, plant medicine, paper and leather industries and cause many problems associated with environmental pollution [1,2]. Several conventional physiochemical techniques are available in the literature for tannin-containing wastewater treatment [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Aerobic biodegradation kinetics of tannic acid in activated sludge system

Zeng

2009

Biochemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Aerobic biodegradation kinetics of tannic acid in activated sludge system

Zeng

2009

Biochemical Engineering Journal

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“…Our previous study on phenol based syntan also showed that D. magna was immobilization severely by 100-300 mg/l of syntan concentration ). The previous finding showed that sea urchins embryos and D. tertilecta growth were severely affected over 3 mg/L of the phenol based syntan (De Nicola et al 2007b). If tannery effluent is discharged directly to the sea there can be foreseen very serious risk on these species while A. salina did not display any toxicity outcome according to this study results.…”

Section: Toxicitymentioning

confidence: 95%

“…The toxicity of mimosa tannin and phenol-based syntan was tested for toxicity to sea urchin (Paracentrotus lividus and Sphaerechinus granularis) early development and to marine algal growth (Dunaliella tertiolecta) comparatively. Sea urchin embryogenesis was affected by vegetable tannin and syntan water extracts at levels 1 mg/L (De Nicola et al 2007b). Cell growth bioassays in D. tertiolecta exposed to vegetable tannin and syntan water extracts showed non-linear concentration-related toxicity.…”

Section: Introductionmentioning

confidence: 97%

“…However a large amount of freshwater is used to treat leather and many potentially dangerous chemicals such as chromium, synthetic tannins, oils, resins, biocides, detergents, are released (Suresh et al 2001;Nazer et al 2006). The concerns related to effluents originated from this industry are mainly due to chronic toxic effects caused by the mixture of many compounds used in the process that can be released to the environment because they even remain after conventional treatment (Meriç et al 2005; Unlike the extensive literature on chromium toxicity, only a scarce database is available on the environmental impact of the leather tanning processes based on vegetable and synthetic tannins, or syntans (STs) (De Nicola et al 2007b) or on retanning operations utilizing Synthetic tannins (STs) (Lofrano et al 2007a). A class of chemicals synthesized for tanning or retanning purposes in the leather tanning industry is collectively termed STs, which are characterized by complex chemical structures because they are composed of an extended set of chemicals such as phenol-, naphthalene-, -formaldehyde and melamine-based syntans, and acrylic resins.…”

Section: Introductionmentioning

confidence: 99%

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Characterization, Fluxes and Toxicity of Leather Tanning Bath Chemicals in a Large Tanning District Area (IT)

Lofrano

Aydın

Russo

et al. 2008

Water Air Soil Pollut: Focus

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The leather tanning industry is perceived as responsible of a significant consume of natural resources and output of wastes such as high concentration of organics, salts and heavy metals such as chromium, both in solid and liquid form as a result. Now as ever the future of tanneries strongly depends on the increase of their awareness that a sustainable industry for the future means embracing a forward-looking philosophy of the leather making process through optimal resource management within the tannery. This study reports the characterization of some chemicals used in a large tanning district area in terms of COD, BOD, aromaticity (UV 280 ) and double bond (UV 254 ) absorbance measurements, toxicity on fresh and saline water as well as terrestrial species, GC-MS scanning. The study provides a consistent set of information on tanninassociated concentration-related trends and suggests novel criteria in defining control quality for evaluating environmental impact of leather tanning industry.

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“…Moreover, some selected agents utilized in leather tanning, including vegetable tannin (VT) from Mimosa sp. and phenol-based synthetic tannin (ST) were evaluated for their concentration-related toxicity trends (De Nicola et al 2004;2007b).…”

Section: Leather Tanning Wastewater and Sludgementioning

confidence: 99%

Complex Mixture-Associated Hormesis and Toxicity: The Case of Leather Tanning Industry

et al. 2008

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h A series of studies investigated the toxicities of tannery-derived complex mixtures, i.e. vegetable tannin (VT) from Acacia sp. or phenol-based synthetic tannin (ST), and wastewater from tannin-based vs. chromium-based tanneries. Toxicity was evaluated by multiple bioassays including developmental defects and loss of fertilization rate in sea urchin embryos and sperm (Paracentrotus lividus and Sphaerechinus granularis), and algal growth inhibition (Dunaliella tertiolecta and Selenastrum capricornutum). Both VT and ST water extracts resulted in hormetic effects at concentrations ranging 0.1 to 0.3%, and toxicity at levels ≥1%, both in sea urchin embryo and sperm, and in algal growth bioassays. When comparing tannin-based tannery wastewater (TTW) vs. chromium-based tannery effluent (CTE), a hormesis to toxicity trend was observed for TTW both in terms of developmental and fertilization toxicity in sea urchins, and in algal growth inhibition, with hormetic effects at 0.1 to 0.2% TTW, and toxicity at TTW levels ≥1%. Unlike TTW, CTE showed a monotonic toxicity increase from the lowest tested level (0.1%) and CTE toxicity at higher levels was significantly more severe than TTW-induced toxicity. The results support the view that leather production utilizing tannins might be regarded as a more environmentally friendly procedure than chromium-based tanning process.

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Vegetable and synthetic tannins induce hormesis/toxicity in sea urchin early development and in algal growth

Cited by 58 publications

References 27 publications

Aerobic biodegradation kinetics of tannic acid in activated sludge system

Aerobic biodegradation kinetics of tannic acid in activated sludge system

Characterization, Fluxes and Toxicity of Leather Tanning Bath Chemicals in a Large Tanning District Area (IT)

Complex Mixture-Associated Hormesis and Toxicity: The Case of Leather Tanning Industry

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