Environmental management aspects for TBT antifouling wastes from the shipyards

Κοτρικλά, Άννα

doi:10.1016/j.jenvman.2008.07.017

Cited by 97 publications

(69 citation statements)

References 52 publications

(116 reference statements)

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“…Since microbial degradation of TBT is the primary process in the environment, biological treatment has a high potential for TBT-contaminated wastewaters. Brandsch et al (2001) found that biological degradation was much faster under aerobic conditions and, with increasing temperature, TBT was completely degraded (no measurable concentration at a detection limit of 1 mg/kg of dry weight) at temperature of 55°C (Kotrikla 2009). …”

Section: Introductionmentioning

confidence: 99%

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Sampath

Venkatakrishnan

Ravichandran

et al. 2011

Water Air Soil Pollut

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Tributyltin (TBT) is a very effective biocide and an active ingredient in antifouling paints. Screening along the Indian coast yielded 49 bacterial isolates capable of TBT assimilation. The screening was done based on the ability of bacteria to grow in mineral salt medium (MSM) containing TBT as the sole source of carbon. All the isolates produced exopolysaccharides (biosurfactants) in the medium which aid in emulsification and thus ease bioavailability of TBT. Five isolates were identified as potent TBT degraders (namely, Pseudomonas pseudoalcaligenes, Pseudomonas stutzeri, Pseudomonas mendocina, Pseudomonas putida, and Pseudomonas balearica) based on their biomass production in MSM containing TBT as the sole source of carbon. In addition to evaluating the potential of individual bacterial strains, the study also focused on using a consortium of bacteria to explore their synergistic effect when grown on TBT. Further tests like growth profile, rhamnolipid secretion profile, extracellular protein secretion profile, and detection of siderophores were performed on these isolates when grown in MSM supplemented with 2 mM TBT concentration. Emulsification activity of the crude extracellular polysaccharides against kerosene was evaluated. It can be therefore inferred that TBT degradation by these marine pseudomonads is a twostep process: (a) dispersion of TBT in the aqueous phase and (b) tin-carbon bond cleavage by siderophores affecting debutylation of TBT. The consortium of bacteria may be effective in the treatment of TBT-contaminated waste water in dry docks.

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Section: Introductionmentioning

confidence: 99%

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Sampath

Venkatakrishnan

Ravichandran

et al. 2011

Water Air Soil Pollut

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“…Tributyltin (TBT, C 12 H 27 Sn + ), is one of the most toxic xenobiotics ever produced and deliberately introduced into the environment, TBT is an organic derivative of tin, characterised by the presence of covalent bonds between three carbon (C) atoms and a single tin atom (Sn 4+ ) [1,2,3]. TBT and other organotins have been used in industrial applications for PVC production, marine antifouling paints, agricultural pesticides and fungicides, and numerous consumer products and household items [1,[3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…TBT is a known endocrine disruptor and is most notably associated with imposex in the periwinkle (Littorina littorea) and dog-whelk (Nucella lapillus) populations. This phenomenon is considered the best example of endocrine disruption in wildlife to date with TBT concentrations as low as 1 ng/l of TBT resulting in observable effects [2,7,8,9]. TBT has also been implicated in causing damage to the aquatic food web by preventing the growth of phytoplankton, vital primary producers, and by bioaccumulation and biomagnification in other marine species [1,6,8,10].…”

Section: Introductionmentioning

confidence: 99%

Developing Microbial Inocula to Support Biofuel Crop Cultivation on Tributyltin Contaminated Marine Sediments

Finnegan¹,

Ryan²,

Enright³

et al. 2017

JAEM

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Tributyltin (TBT) is a synthetic organotin compound and is recognised as the most toxic chemical ever knowingly introduced into the marine environment. Organotins have a wide range of application with an estimated global production of 50,000 tons per year therefore impacts from TBT can be seen or anticipated in many environments including protected areas like aqua farms and world heritage sites effecting aquaculture and undisturbed ecosystems. Due to the impact of TBT a necessity exists for the treatment of contaminated sediment and soil using nature-based solutions as it is both non-invasive and sustainable. However these remediation techniques must also be economically interesting to increase its acceptance. Thus using the biomass from plant species with the ability to cultivate in dredged sediment for biofuel and biomaterials production should be considered to ensure that renewable energy consumption of 10% is meet by 2020. The objectives of this study is to investigate the potential of Hordeum vulgare and Brassica napus to cultivate in marine sediments despite the salinity and TBT pollution for a 30 day pot trial. Further to inoculate seedling roots with known TBT degrading bacteria to enhance the phytoremediation capacity. Also to establish if bacterial isolates C7 and C22 are plant growth promoting bacteria. Statistical analysis on seedlings biomass was carried out followed by analytical analyses by atomic absorption spectroscopy (AAS) and sediment analysis by gas chromatography mass spectrometry (GC-MS). Results showed a maximum decrease of ≥ 82% and ≥ 80% of TBT in sediment samples respectively with bacteria inoculum C7 (KX881905) and C22 (KX881904), further Hordeum vulgare seedlings were the ideal candidate plant species with a significant production of biomass.

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“…Apesar de tais dispositivos legais, é esperado que uma significativa carga de TBT continue presente nos ecossistemas aquáticos, principalmente, em áreas próximas a portos e estaleiros, tendo em vista a supracitada persistência ambiental dos BTs (Kotrikla 2009). Sendo assim, espera-se elevada acumulação de TBT nos sedimentos, de forma que tal matriz ambiental pode ser considerada fonte de TBT de longo prazo, mesmo após as restrições legais (Hoch 2001, Choi et al 2009).…”

Section: Introductionunclassified

Exposição De Cetáceos a Compostos Butilestânicos: Uma Revisão

Schilithz

Lailson‐Brito

2013

Oecol. Austr.

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RESUMODurante as últimas décadas, observou-se um aumento da preocupação em relação aos ecossistemas marinhos devido à grande entrada de poluentes, resultando em efeitos deletérios em organismos aquáticos e seres humanos. Dentre as atividades humanas que podem introduzir compostos tóxicos persistentes e bioacumulativos (PBTs) no ambiente marinho está o uso de tintas anti-incrustrantes, aplicadas nos cascos de navios para evitar que algas, mexilhões e outros organismos se fixem às embarcações. Não raramente, compostos organoestânicos (OTs) como o Tributilestanho (TBT) ou o Trifenilestanho (TPT) constituíam o princípio ativo de tal preparado. Devido à alta toxicidade desses compostos, a IMO (Organização Marítima Internacional), baniu totalmente o uso dos mesmos. Como os OTs são prontamente bioacumulados, elevadas concentrações vêm sendo encontradas em cetáceos. A presente revisão aborda a elevada exposição de mamíferos marinhos aos OTs e a possível influência de parâmetros biológicos, discutindo dados relativos às concentrações hepáticas de diversas espécies de cetáceos em diferentes regiões do globo. Elevados níveis de TBT foram encontrados em cetáceos mesmo após seu banimento, sendo tais altas concentrações observadas principalmente em espécies ocorrentes em países desenvolvidos. Palavras-chave: Agente anti-incrustante; estanho; TBT; toxicidade ABSTRACT CETACEAN EXPOSURE TO BUTYLTIN COMPOUNDS: A REVIEW. During the last decades, the large pollutant input has led to an increased concern over marine ecosystems. This environmental contamination results in deleterious effects on aquatic organisms and humans. Among the anthropogenic activities that may introduce persistent bioaccumulative toxicants (PBTs) into the marine environment is the use of antifouling paint. It is applied on ship hulls and other floating structures to prevent algae, mussels and other organisms to fix on these surfaces. Often, organotin compounds (OTs), such as Tributyltin (TBT) or Triphenyltin (TPT), constitute the active ingredient in these mixtures. Due to the high toxicity of these compounds, the IMO (International Maritime Organization) completely banned their use. As OTs are readily bioaccumulated, high concentrations have been found in cetaceans. This review covers the high marine mammal exposure to OTs and the possible influence of biological parameters. Additionally, data on hepatic OT levels in a number of cetacean species from all over the world are discussed. High TBT levels were found in cetaceans even after the ban. These high concentrations were observed mainly in species from developed countries.

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Environmental management aspects for TBT antifouling wastes from the shipyards

Cited by 97 publications

References 52 publications

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Developing Microbial Inocula to Support Biofuel Crop Cultivation on Tributyltin Contaminated Marine Sediments

Exposição De Cetáceos a Compostos Butilestânicos: Uma Revisão

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