alumino-ferricadj.n.
/əˌl(j)uːmᵻnəʊˈfɛrɪk/, U.S. /əˌlumənəˈfɛrɪk/ Chemistry.
A. adj.
Containing both aluminium and iron; spec. designating the substance alumino-ferric (see branch B.); relating to this substance.
ΚΠ
1868 H. Watts Dict. Chem. V. 596 Aluminio-ferric sulphate occurs native in the quicksilver mines of Idria.]
1874 W. Crookes Pract. Handbk. Dyeing 297 These particles..take up the alumino-ferric precipitates.
1883 Jrnl. Soc. Chem. Industry 2 45/1 Then alumino ferric cake, in quantity not too great to be decomposed by the lime salt present, is added.
1925 Brit. Med. Jrnl. 22 Aug. 349/1 To circulate the water..through a rough gauze strainer to arrest any large objects, and then to treat it with an alumino-ferric coagulant, so as to separate all the colouring matter.
1969 Libr. Q. 39 177 Other additives, such as iron-free alum, aluminoferric alum, iron oxide, sequestering..agents, and titanium dioxide, had little, if any, effect.
2005 A. N. Shilton Pond Treatm. Technol. 94 Natural compounds containing alumino-ferric compounds..can be added.
B. n.
An impure form of aluminium sulphate containing ferric oxide, used esp. as a coagulating and flocculating agent for water purification, sewage treatment, etc.
ΚΠ
1878 Lancet 26 Oct. 606/1 The fine silicous matter..contained in the alumino-ferric is found to assist rather than retard the precipitation.
1908 Chambers's Jrnl. May 295/2 The alumina compound most generally used..is that known as aluminoferric.
1948 Sewage Wks. Jrnl. 20 588/1 Samples of spent emulsified cutting oils were treated with varying proportions of solutions of aluminum sulfate, aluminoferric, ferric chloride, [etc.].
2010 US Fed News (Nexis) 11 Mar. Farakka Barrage Project said it had a requirement for alumino ferric in cake slab.
This is a new entry (OED Third Edition, September 2012; most recently modified version published online December 2021).
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adj.n.1874