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Anaerobic degradation of nonylphenol in subtropical mangrove sediments

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Abstract.
Nonylphenol (NP) is known as an endocrine disruptor and has consequently drawn much environmental
concern. We investigated the effects of various factors on the anaerobic degradation of NP and characterized
the structures of microbial communities in mangrove sediments collected at five sites along the
Tanshui River in northern Taiwan. NP anaerobic degradation rate constants (k1) and half-lives (t1/2) ranged
from 0.008 to 0.013 1/day and 53.3 to 86.6 days, respectively. The addition ofNaCl (1%, 2%), zero-valent iron
(10 g/L), humic acid (0.5 g/L), cellulose (0.96 mg/L), brij 30 (55M) and brij 35 (91M) enhanced NP anaerobic
degradation. However, the addition ofNaCl (3%), acetate (20 mM), lactate (20 mM), pyruvate (20 mM),
and humic acid (5 g/L) inhibited NP anaerobic degradation. Sulfate-reducing bacteria, methanogen, and
eubacteria are involved in the degradation of NP, sulfate-reducing bacteria being a major component of
the sediment. Our results also showthat the addition of various substrates changed the microbial community
in mangrove sediments. Also noted was the presence of 2-butyl-1-octanol, an intermediate product
resulting from the anaerobic degradation of NP accumulated in the sediments.

Keywords:
Biodegradation
Nonylphenol
Microbial community
Subtropical mangrove sediments

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 165 (2009) 162–167

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

LINGKUNGAN HIDUP

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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