Nouveau manuel complet de galvanoplastie; ou, Traité pratique et simplifié des manipulations électro-chimiques appliquées aux arts et à l'industrie,

Mode of access: Internet.

Removal Of Chromium From Electroplating Effluents By The Sulfide Process

A method has been developed for the removal of chromium using ferrous sulphide generated in situ. The effects of experimental parameters such as pH, reagent dosages, interference from cations and chelating agents have been investigated. Under optimum conditions, removal efficiencies of 99 and 97% for synthetic and industrial samples have been obtained. The method offers all the advantages of sulphide precipitation process and can be adopted easily for industrial effluents.

Emilie Waldbaum Collection 1873-1876

Three certificates for Emilie Waldbaum's work as governess (1873-1876).

Hans Hirschfeld : (1873-1944).

Brochure on occasion of the 1986 exhibition ‘Heilen und Vernichten im Nationalsozialismus’ (Healing and destruction under the Nazis) in Aachen, Germany. It includes a list of Hirschfeld’s publications.

David Frischmann (1859-1922) and Chaim Nachman Bialik(1873-1934) in conversation.

( 1862-1945 ) b. Odessa. Pasternak was a prominent Moscow artist, who emigrated to Berlin in 1921, the same year as the Hebrew poet Bialik.

Philip Cowen papers undated, 1873-1935

Contains primarily correspondence and published material in English, German and Russian relating to anti-Semitism in Russia and Roumania, the Russian passport question, loans from Jewish bankers to the Russian government and immigration from Eastern Europe, especially Russia, to the United States. Includes also correspondence concerning Jewish welfare institutions and agricultural colonies in the United States and the National Farm School in Doylestown, Pa. Also contains correspondence relating to and drafts of articles for the American Hebrew, particularly the Emma Lazarus memorial number, and correspondence relating to the publication of the Jewish encyclopedia and to survey on anti-Semitism conducted in 1890, as well as information on the Jews in China and material relating to Count Arthur Cherep-Spiridovich.

Oversized Materials, Box 1 1873, 1876, 1880

Oversized materials is the digitized contents of one box (OS1) that consists of correspondence and an address from Box 2, Folders 12, 13 and 17.

Oversized Materials, Box 1 1873, 1876, 1880

Oversized materials is the digitized contents of one box (OS1) that consists of correspondence and an address from Box 2, Folders 12, 13 and 17.

Oversized Materials, Box 1 1873, 1876, 1880

Oversized materials is the digitized contents of one box (OS1) that consists of correspondence and an address from Box 2, Folders 12, 13 and 17.

Oversized Materials, Box 1 1873, 1876, 1880

Oversized materials is the digitized contents of one box (OS1) that consists of correspondence and an address from Box 2, Folders 12, 13 and 17.

C.G. Simonis Collection 1873

Letter by Simonis from 1873

Treatment of electroplating effluent through emulsion-free liquid embrane

Separation of dissolved heavy metals such-as Cr(VI) and Cu(II) from electroplating effluents using a new technique of emulsion-free liquid membrane (EFLM) has been studied. Experimental results show that nearly 95% extraction is obtained resulting in stripping phase enrichment up to 50 times relative to feed. It is also found that emulsion-free liquid membranes are highly efficient and superior to other types of liquid membranes.

Measurement and modeling of Alloy-Spinel-Corundum equilibrium in the Ni-Mn-Al-0 system at 1873 K

The oxygen content of liquid Ni-Mn alloy equilibrated with spinel solid solution, (Ni,Mn)O. (1 +x)A12O3, and α-Al2O3 has been measured by suction sampling and inert gas fusion analysis. The corresponding oxygen potential of the three-phase system has been determined with a solid state cell incorporating (Y2O3)ThO2 as the solid electrolyte and Cr + Cr2O3 as the reference electrode. The equilibrium composition of the spinel phase formed at the interface of the alloy and alumina crucible was obtained using EPMA. The experimental data are compared with a thermodynamic model based on the free energies of formation of end-member spinels, free energy of solution of oxygen in liquid nickel, interaction parameters, and the activities in liquid Ni-Mn alloy and spinel solid solution. Mixing properties of the spinel solid solution are derived from a cation distribution model. The computational results agree with the experimental data on oxygen concentration, potential, and composition of the spinel phase.