Observations on the source of acid in empoldered mangrove soils

Hart, M. G. R.

doi:10.1007/bf01377823

Cited by 23 publications

(7 citation statements)

References 7 publications

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“…Other features are the importance of Acidithiobacillus ferrooxidans as a catalyst (Arkesteyn, 1980;Nordstrom, 1982;van Breemen, 1982), and that the initial oxidation product is elemental S (Hart, 1962;van Breemen, 1973). It is also possible that small amounts of SO 2 may form at pyrite oxidation, which would result in sulfur losses to the atmosphere (Brunner et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Impact of isostatic land uplift and artificial drainage on oxidation of brackish-water sediments rich in metastable iron sulfide

Boman

Fröjdö

Backlund

et al. 2010

Geochimica et Cosmochimica Acta

101

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Section: Introductionmentioning

confidence: 99%

Impact of isostatic land uplift and artificial drainage on oxidation of brackish-water sediments rich in metastable iron sulfide

Boman

Fröjdö

Backlund

et al. 2010

Geochimica et Cosmochimica Acta

101

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“…(rgsz), and Harmsen (1954), concluded that the oxidation of p rite was catalysed by the action of T. thiooxidans in oxidizing process. (See also Hart, 1962Hart, , 1963 Extensive industrial use is made of the bacterial oxidation of lowgrade p r i t i c ores whereb the metal, e.g. copper, may be extracted economically (Bryner and f ameson, 1958).…”

mentioning

confidence: 99%

The Oxidation of Iron Sulphides in Soils in Relation to the Formation of Acid Sulphate Soils, and of Ochre Deposits in Field Drains

Bloomfield

1972

Journal of Soil Science

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Aerating pyritic soils causes acidification and the formation of acid sulphate soils, or cat-clay. The oxidation of pyrite in soils is associated with the deposition in tile drains of a form of ochre quite distinct from that formed by the action of filamentous iron bacteria. Pyrite-derived ochre results from the action of Thiobacillus ferrooxidans, which, below pH 3.5-40, catalyses the oxidation of Fea+ and pyrite. In soils less acid than c. pH 4, pyrite oxidizes relatively slowly by chemical reactions to Fe*+ and SO:-. Under these conditions iron enters the drains as Fe'f and is there oxidized by T. fewooxidans and deposited as hydrated ferric oxide. Once the soil becomes acid enough for T. fenoojcidans to multiply, the rate at which pyrite oxidizes increases several-fold, and at c. pH 3 iron appears in the drainage water in the ferric form. Liming seems to decrease the rate of oxidation.

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“…The genus Listonella includes diazotrophic members with some representative previously detected from mangrove rhizosphere (Gomes et al, 2010). Hart (1958;1959;1962) demonstrated that mangrove peat contains large amounts of sulphides and polysulphides. He showed that free sulphur was oxidized to sulphuric acid by Thiobacillus thio-oxidans from tidal mangrove soil of Sierra Leone.…”

Section: Diversity Of Sob In Different Mangrove Ecosystemmentioning

confidence: 99%

Sulphur oxidising bacteria in mangrove ecosystem: A review

Behera¹,

Mishra²,

Dutta³

et al. 2014

Afr. J. Biotechnol.

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Mangrove soils are anoxic, sulphidic and variable since their chemistry is regulated by a variety of factors such as texture, tidal range and elevation, redox state, bioturbation intensity, forest type, temperature and rainfall. Sulphur-oxidizing bacteria such as photoautotrophs, chemolithotrophs and heterotrophs play an important role in the mangrove environment for the oxidation of the toxic sulphide produced by sulphur reducing bacteria and act as a key driving force behind all sulphur transformations in the mangrove ecosystem which is most essential to maintain the sulphur cycle as well as eco health. These overviews summarizes the current state of knowledge of diversity and important biotechnological contributions of these microorganisms in agriculture, bio fertility, reduction of environmental pollution, maintenance of the productivity of ecosystems and also highlight areas in which further research is needed to increase our basic understanding of physiology, genomics and proteomics of these microorganisms which is most essential.

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Observations on the source of acid in empoldered mangrove soils

Cited by 23 publications

References 7 publications

Impact of isostatic land uplift and artificial drainage on oxidation of brackish-water sediments rich in metastable iron sulfide

Impact of isostatic land uplift and artificial drainage on oxidation of brackish-water sediments rich in metastable iron sulfide

The Oxidation of Iron Sulphides in Soils in Relation to the Formation of Acid Sulphate Soils, and of Ochre Deposits in Field Drains

Sulphur oxidising bacteria in mangrove ecosystem: A review

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