Detail of "17084-02-5"

Reference

Removing hydrogen sulfide from gases utilizing a polyvalent metal chelate solution and electrolytically regenerating the solution

Removing hydrogen sulfide from gases utilizing a polyvalent metal chelate solution and electrolytically regenerating the solution. Olson, Donald C. (Shell Oil Co. , USA). U.S. US 4443423 A 17 Apr 1984, 7 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C01B017-04; B01D053-34. NCL: 423573000G. APPLICATION: US 82-430465 30 Sep 1982. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) A process is provided for the continuous removal of CO2 and H2S from sour gases, by the selective adsorption of CO2, partial adsorption of H2S, and oxidn. of H2S with metal diesters of amino acids. Thus, a sour natural gas contg. 0.5% H2S from which CO2 had been removed by adsorption, was bubbled through 0.1 M aq. soln. of ferric N-(2-hydroxyethyl)ethylenediaminetriacetic acid chelate (I) [17084-02-5]. This oxidized H2S to elemental S (which was removed) and gave H+ which were reduced to H in an elec. I regeneration cell consisting of a Pt anode and a cathode of H-permeable membrane coated with Pt-contg. C.

Ferric chelate reduction by suspension culture cells and roots of soybean: a kinetic comparison

Ferric chelate reduction by suspension culture cells and roots of soybean: a kinetic comparison. Cornett, J. D.; Johnson, G. V. (Dep. Biol., Univ. New Mexico, Albuquerque, NM 87131, USA). Dev. Plant Soil Sci., 43(Iron Nutr. Interact. Plants), 95-100 (English) 1991. CODEN: DVPSD8.There are some reagents with their cas registry numbers 7439-89-6 and 17084-02-5 are used in this study. ISSN: 0167-840X. DOCUMENT TYPE: Journal CA Section: 19 (Fertilizers, Soils, and Plant Nutrition) Section cross-reference(s): 11 The abilities of suspension cultures and intact roots of soybean (Glycine max cv. Hawkeye) to reduce ferric chelate were compared. Ferric chelate was supplied as ferric hydroxyethylethylenediaminetriacetic acid (FeHEDTA) and redn. was measured spectrophotometrically using bathophenanthrolinedisulfonic acid (BPDS) as the ferrous scavenger. Ferric chelate redn. by cell suspension cultures showed typical satn. kinetics; however, no difference was obsd. between cells that had been continuously grown with Fe (+Fe) and those that had been grown for 4 days without added Fe (-Fe). Values of Km and Vmax, detd. from a Lineweaver-Burk plot, were 57 mM and 28 nmol mg-1 dry wt. for the +Fe cells and 50 mM and 22 nmol mg-1 dry wt. for the -Fe cells, resp. Ferric chelate redn. by Fe-deficient roots also exhibited satn. kinetics, while roots grown with adequate Fe did not reduce ferric chelate. The Km and Vmax values for Fe-deficient roots were 45 mM and 20 nmol mg-1 dry wt., resp., and did not differ from values obtained for cells in culture. This study offers strong evidence that the mechanism responsible for the redn. of ferric chelate is the same for cultured cells and roots and that the process is controlled at the cellular level. It is proposed that suspension cultures can be used as an alternative to intact roots in the study of ferric chelate redn. .