{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,10]],"date-time":"2026-11-10T12:32:41Z","timestamp":1794313961230,"version":"4.9.0"},"reference-count":66,"publisher":"American Society for Microbiology","issue":"1","license":[{"start":{"date-parts":[[1999,1,1]],"date-time":"1999-01-01T00:00:00Z","timestamp":915148800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Appl Environ Microbiol"],"published-print":{"date-parts":[[1999,1]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Biogenic Mn oxides were produced by the bacterium\n            <jats:italic>Leptothrix discophora<\/jats:italic>\n            SS-1 (= ATCC 3182) in a chemically defined mineral salts medium, and the Pb binding and specific surface area of these oxides were characterized. Growth of SS-1 in the defined medium with pyruvate as a carbon and energy source required the addition of vitamin B\n            <jats:sub>12<\/jats:sub>\n            . Complete oxidation of Mn(II) within 60 h required the addition of \u22650.1 \u03bcM FeSO\n            <jats:sub>4<\/jats:sub>\n            . Pb adsorption isotherms were determined for the biogenic Mn oxides (and associated cells with their extracellular polymer) and compared to the Pb adsorption isotherms of cells and exopolymer alone, as well as to abiotic Mn oxides. The Pb adsorption to cells and exopolymer with biogenic Mn oxides (0.8 mmol of Mn per g) at pH 6.0 and 25\u00b0C was 2 orders of magnitude greater than the Pb adsorption to cells and exopolymer alone (on a dry weight basis). The Pb adsorption to the biogenic Mn oxide was two to five times greater than the Pb adsorption to a chemically precipitated abiotic Mn oxide and several orders of magnitude greater than the Pb adsorption to two commercially available crystalline MnO\n            <jats:sub>2<\/jats:sub>\n            minerals. The N\n            <jats:sub>2<\/jats:sub>\n            Brunauer-Emmet-Teller specific surface areas of the biogenic Mn oxide and fresh Mn oxide precipitate (224 and 58 m\n            <jats:sup>2<\/jats:sup>\n            \/g, respectively) were significantly greater than those of the commercial Mn oxide minerals (0.048 and 4.7 m\n            <jats:sup>2<\/jats:sup>\n            \/g). The Pb adsorption capacity of the biogenic Mn oxide also exceeded that of a chemically precipitated colloidal hydrous Fe oxide under similar solution conditions. These results show that amorphous biogenic Mn oxides similar to those produced by SS-1 may play a significant role in the control of trace metal phase distribution in aquatic systems.\n          <\/jats:p>","DOI":"10.1128\/aem.65.1.175-180.1999","type":"journal-article","created":{"date-parts":[[2019,12,19]],"date-time":"2019-12-19T19:42:05Z","timestamp":1576784525000},"page":"175-180","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":182,"title":["Production of Biogenic Mn Oxides by\n            <i>Leptothrix discophora<\/i>\n            SS-1 in a Chemically Defined Growth Medium and Evaluation of Their Pb Adsorption Characteristics"],"prefix":"10.1128","volume":"65","author":[{"given":"Yarrow M.","family":"Nelson","sequence":"first","affiliation":[{"name":"<!--label omitted: 1-->School of Civil and Environmental Engineering,1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonard W.","family":"Lion","sequence":"additional","affiliation":[{"name":"<!--label omitted: 1-->School of Civil and Environmental Engineering,1"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William C.","family":"Ghiorse","sequence":"additional","affiliation":[{"name":"<!--label omitted: 2-->Section of Microbiology,2 and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael L.","family":"Shuler","sequence":"additional","affiliation":[{"name":"<!--label omitted: 3-->School of Chemical Engineering,3 Cornell University, Ithaca, New York 14853"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00446769"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1128\/jb.169.3.1279-1285.1987"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(88)90186-X"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/0025-326X(90)90606-9"},{"key":"e_1_3_2_6_2","unstructured":"American Public Health Association\nStandard methods for the examination of water and wastewater\n19th ed.\n1995\nAmerican Public Health Association\nWashington D.C"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(82)90057-6"},{"key":"e_1_3_2_8_2","first-page":"83","article-title":"Types of the occurrence of heavy metals in bottom deposits of Sasyk Water Reservoir Ukrainian SSR USSR.","volume":"25","author":"Belokon V. N.","year":"1989","unstructured":"Belokon V. N. Types of the occurrence of heavy metals in bottom deposits of Sasyk Water Reservoir Ukrainian SSR USSR. Gidrobiol. Zh. 25 1989 83 88","journal-title":"Gidrobiol. Zh."},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1128\/jb.169.2.489-494.1987"},{"key":"e_1_3_2_10_2","first-page":"91","article-title":"Distribution of toxic metals in stream sediments.","volume":"38","author":"Borovec Z.","year":"1994","unstructured":"Borovec Z. Distribution of toxic metals in stream sediments. Acta Univ. Carol. Geol. 38 1994 91 103","journal-title":"Acta Univ. Carol. Geol."},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1071\/SR9780079"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1021\/ja01269a023"},{"key":"e_1_3_2_13_2","unstructured":"Burdige\nD. J.\nThe biogeochemistry of manganese redox reactions: rates and mechanisms. Ph.D. thesis.\n1983\nUniversity of California San Diego"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1080\/01490459209377902"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/0883-2927(86)90010-7"},{"key":"e_1_3_2_16_2","unstructured":"Corstjens\nP. L. A. M.\nBacterial oxidation of iron and manganese: a molecular-biological approach. Ph.D. thesis.\n1993\nUniversity of Leiden\nLeiden The Netherlands"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1080\/01490459709378037"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1128\/aem.58.2.450-454.1992"},{"key":"e_1_3_2_19_2","doi-asserted-by":"crossref","unstructured":"Davis\nJ. A.\nKent\nD. B.\nSurface complexation modeling in aqueous geochemistry\nMineral-water interface Geochemistry.\nHochella\nJ. M. F.\nWhite\nA. 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