Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea

ZHU Maoxu; FAN Changqing; YANG Guipeng; LI Tie

Article Contents

Article Navigation > Haiyang Xuebao > 2012 > 34(4): 67-76

ZHU Maoxu, FAN Changqing, YANG Guipeng, LI Tie. Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea[J]. Haiyang Xuebao, 2012, 34(4): 67-76.

Citation:

ZHU Maoxu, FAN Changqing, YANG Guipeng, LI Tie. Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea[J]. Haiyang Xuebao, 2012, 34(4): 67-76.

ZHU Maoxu, FAN Changqing, YANG Guipeng, LI Tie. Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea[J]. Haiyang Xuebao, 2012, 34(4): 67-76.

Citation:

ZHU Maoxu, FAN Changqing, YANG Guipeng, LI Tie. Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea[J]. Haiyang Xuebao, 2012, 34(4): 67-76.

PDF( 2193 KB)

Kinetic characterization of reductive reactivity of iron(Ⅲ) oxides in sediments of the East China Sea

Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 2011-04-18
Rev Recd Date: 2012-02-09

Abstract

Abstract

Kinetic experiments and the reactive continuum model were combined to characterize the reductive reactivity of iron(Ⅲ) oxides in surface and core sediments of the East China Sea.Three kinetic parameters,i.e.,theoretical amounts of total reactive iron(Ⅲ) oxides (m₀),apparent rate constants (k'),and heterogeneity of reactivity (γ),were obtained by fitting kinetic data to the reactive continuum model.The results show that m₀ values in the surface sediments are within a narrow range (26.14~60.51 μmol/g). Normalized initial rates (J/m₀=k'),which characterize the kinetic behavior of highly reactive iron(Ⅲ) oxides,are also within a narrow range,with the highest initial rate being only 7.25 times the lowest.But heterogeneity of reductive reactivity of iron(Ⅲ) oxides in the surface sediments displays a wide range of variation.The kinetic rates after 90% dissolution of iron(Ⅲ) oxides are 2~4 orders of magnitude lower than the initial rates.The values of m₀,k',and γ for core C0702 decrease generally with depth,and display good linear relationships between each other,which could be attributed to diagenetic cycling of iron in the sediments.However,no correlations among m₀,k' and γ were observed in the surface sediments.In comparison with traditional chemical extraction methods,the reactive continuum model allows a more nuanced picture of the reactivity and kinetic manner of iron(Ⅲ) oxides in reductive dissolution.
- iron(Ⅲ)-oxides,
- reductive reactivity,
- marine sediments,
- kinetics,
- East China Sea

FullText(HTML)

References(37)

References

CANFIELD D E,KRISTENSEN E,THAMDRUP B.Aquatic Geomicrobiology[M].Amsterdam:Elsevier,2005.

THAMDRUP B.Bacterial manganese and iron reduction in aquatic sediments[J].Advance in Microbial Ecology,2000,16:41-84.

LOVLEY D R,PHILLIPS E J P.Rapid assay for microbially reducible ferric iron in aquatic sediments[J].Applied Environmental Microbiology,1987,53:1536-1540.

CANFIELD D E,RAISWELL R,BOTTRELL S.The reactivity of sedimentary iron minerals toward sulfide[J].American Journal of Science,1992,292:659-683.

ROZAN T F,TAILLEFERT M,TROUWBORST R E,et al.Iron-sulfur-phosphorus cycling in the sediments of a shallow coastal bay:implications for sediment nutrient release and benthic macroalgal blooms[J].Limnology and Oceanography,2002,47:1346-1354.

ZACHARA J M,FREDRICKSON J K,SMITH S C,et al.Solubilization of Fe(Ⅲ) oxide-bound trace metals by a dissimilatory Fe(Ⅲ) reducing bacterium[J].Geochimica et Cosmochimica Acta,2001,65:75-93.

BURDIGE D J.Geochemistry of Marine Sediments[M].Princeton:Princeton University Press,2006.

CHAO T T,ZHOU L.Extraction techniques for selective dissolution of amorphous iron oxides from soils and sediments[J].Soil Science Society of America Journal,1983,47:225-232.

PHILLIPS E J P,LOVLEY D R.Determination of Fe(Ⅲ) and Fe(Ⅱ) in oxalate extracts of sediment[J].Soil Science Society of America Journal,1987,51:938-941.

KOSTKA J,LUTHER G W.Partitioning and speciation of iron in saltmarsh sediments[J].Geochimica et Cosmochimica Acta,1994,58:1701-1710.

POULTON S W,CANFIELD D E.Development of a sequential extraction procedure for iron:implications for iron partitioning in continentally derived particulates[J].Chemical Geology,2005,214:209-221.

POSTMA D.The reactivity of iron oxides in sediments:a kinetic approach[J].Geochimica et Cosmochimica Acta,1993,57:5027-5034.

ZHAO YIYANG.Geochemistry of some elements in sediments of the East China Sea[J].Chinese Journal of Oceanography and Limnology,1983,1:210-222.

段伟民,陈丽蓉.黄、东海早期成岩过程中黄铁矿的形成史[J].中国科学:B辑,1993,23(5):545-552.

尹希杰,周怀阳,杨群慧,等.珠江口淇澳岛海岸带沉积物中硫酸盐还原和不同形态硫的分布[J].海洋学报,2010,32(3):31-39.

宋金明,李鹏程.渤海南部沉积物中的活性铁及氧化还原环境[J].海洋科学,1997,2(4):32-36.

李学刚,吕晓霞,孙云明,等.渤海沉积物中的"活性铁"与氧化还原环境的关系[J].海洋环境科学,2003,22(1):20-24.

CHRISTOFFERSEN J,CHRISTOFFERSEN M R.The kinetics of dissolution of calcium sulphate dihydrate in water[J].Journal of Crystal Growth,1976,35:79-88.

BOUDREAU B P,RUDDICK B R.On reactive continuum representation of organic matter diagenesis[J].American Journal of Science,1991,291:507-538.

CHRISTOFFERSEN J.Kinetics of dissolution of calcium hydroxyapatite[J].Journal of Crystal Growth,1980,49:29-44.

LARSEN O,POSTMA D.Kinetics of reactive bulk dissolution of lepidocrocite,ferrihydrite,and goethite [J].Geochimica et Cosmochimica Acta,2001,65:1367-1379.

LARSEN O,POSTMA D,JAKOBSEN R.The reactivity of iron oxides towards reductive dissolution with ascorbic acid in a shallow sandy aquifer (R?m?,Denmark) [J].Geochimica et Cosmochimica Acta,2006,70:4827-4835.

HYACINTHE C,BONEVILLE S,Van CAPPELLEN P.Reactive iron(Ⅲ) in sediments:chemical versus microbial extractions[J]. Geochimica et Cosmochimica Acta,2006,70:4166-4180.

Van DER ZEE C.VAN RAAPHORST W,2004.Manganese oxide reactivity in North Sea sediments[J].Journal of Sea Research,2004,52:73-85.

POSTMA D,JESSEN S,HUE N T M,et al.Mobilization of arsenic and iron from Red River floodplain sediments,Vietnam[J]. Geochimica et Cosmochimica Acta,2010,74:3367-3381.

HYACINTHE C,VAN CAPPELLEN P.An authigenic iron phosphate phase in estuarine sediments:composition,formation and chemical reactivity[J].Marine Chemistry,2004,91:227-251.

DENG Y.Effect of pH on the reductive dissolution rates of iron(III) hydroxide by ascorbate[J].Langmuir,1997,13:1835-1839.

REYES I,TORRENT J.Citrate-ascorbate as a highly selective extractant for poorly crystalline iron oxides[J].Soil Science Society of America Journal,1997,61:1647-1654.

PEDERSEN H D,POSTMA D,JAKOBSEN R,et al.Fast transformation of iron oxyhydroxides by the catalytic action of Fe(Ⅱ)[J]. Geochimica et Cosmochimica Acta,2005,69:3967-3977.

PEDERSEN H D,POSTMA D,JAKOBSEN R,et al.Release of arsenic associated with the reduction and transformation of iron oxides [J].Geochimica et Cosmochimica Acta,2006,70:4116-4129.

吕仁燕,朱茂旭,李铁,等.东海陆架泥质沉积物中固相Fe形态及其对有机质、Fe、S成岩路径的制约意义[J].地球化学,2011,40(4):363-371.

RICKARD D,MORSE J W.Acid volatile sulfide (AVS)[J].Marine Chemistry,2005,97:141-197.

FAN D-J,NEUSER R D,SUN X-G,et al.Authigenic iron oxide formation in the estuarine mixing zone of the Yangtze River[J].Geo-Marine Letter,2008,28:7-14.

LEHTORANTA J,EKHOLM P,HEIKKI P.Coastal eutrophication thresholds:a matter of sediment microbial processes[J].AMBIO,2009,38:303-308.

鲍根德.铁、锰早早期成岩过程中分离及其生物地球化学机制[J].中国科学:B辑,1989,19(1):93-102.

鲍根德,张桂芬.长江口及邻区陆架区沉积物和孔隙水中铁和锰及其与细菌的关系探讨[J].热带海洋,1991,10(1):32-39.

JAKOBSEN R,POSTMA D.Redox zoning,rates of sulfate reduction and interactions with Fe-reduction and methanogenesis in a shallow sandy aquifer,Rm,Denmark[J].Geochimica et Cosmochimica Acta,1999,63:137-151.

Relative Articles

Supplements(0)

Cited By

Proportional views