1925 U.S. Patent 1,566,796 7/2 With such cyclic operation, it is readily possible to recycle sufficient ammonia to insure that substantially all of the phenolic compounds will be driven off so that they may be recovered.

1945 H. D. Smyth Gen. Acct. Devel. Atomic Energy Mil. Purposes ix. 100 Any given sample of material is recycled many times.

1958 Times 17 Oct. 5/1 It is envisaged that plutonium produced in the working of the reactor will later be recycled through it.

1964 N. G. Clark Mod. Org. Chem. iv. 62 Using only a small volume of solvent, which is continually re-cycled, it is possible to carry out the equivalent of many hundreds of separate extractions.

1998 Water & Waste Treatm. May 31/3 Should the level of suspended solids exceed the limit setpoint, an audible alarm and flashing light alert plant personnel to recycle the waste-water back through the treatment works.

1965 G. J. Williams Econ. Geol. N.Z. i. 2/2 These [beds of sediment] are of considerable interest to economic geologists for through them much detrital gold was recycled within and beyond the primary gold-bearing areas.

1973 Sci. Amer. Apr. 61/1 Stars continually recycle their material through the interstellar medium.

1990 Which? Apr. 212/1 Worms generally do more good than harm. They help to aerate the soil and recycle grass clippings.

1992 Food Entertaining Summer 98 (advt.) The Earth's water resources are never used up—they are constantly recycled in a continuous natural process.

2005 J. Diamond Collapse (2006) xvi. 489 Examples include..wild plants and animals that decompose wastes and recycle nutrients.

1960 Aeroplane 99 521/2 It has systems which reduce all organic waste to a small amount of ash and recycle urine and waste water into drinkable water.

1967 Technol. Week 23 Jan. 34/3 It would allow us to economically desalt sea and brackish water, recycle water from sewage.

1971 New Yorker 16 Oct. 33 What you ecology-minded ladies don't realize is that before a bottle can be recycled it has to be emptied.

1974 Listener 28 Feb. 278/1 Such a plant would recycle steel, aluminium, zinc, lead and copper from scrap.

1989 Which? Oct. 479/3 Some retailers will collect your old appliance, and recycle the refrigerant.

2007 N.Y. Times (National ed.) 5 Apr. c6/5 Ms. Laney created a ‘zero waste’ break room where workers use mugs instead of Styrofoam cups and set up bins to recycle aluminum cans and plastic bottles.

1971 Winnipeg Free Press 12 Aug. 28/4 [He] said the answer to the solid waste problem is to recycle, or reuse as much as is possible.

1989 Newsday (N.Y.) (Nexis) 9 Aug. (Food section) 3 People are recycling, they're using biodegradable products, and they're looking for organic produce.

1990 Earth Matters Summer 17/3 ‘Reduce, Re-use, Recycle’ is a useful maxim.

2002 K. Strange in R. E. Hester & R. M. Harrison Environmental & Health Impact Solid Waste Managem. Activities (Royal Soc. Chem.) 46 Up to another third of households are recycling but think they are doing as much as they can.

2007 Hello! 17 July 95 I carbon neutralise when I travel. I recycle.

1943 U.S. Patent 2,337,441 1/1 The transmitter recycles so as to be ready to again send an out-of-service signal when another interruption occurs.

1951 W. Keister et al. Design Switching Circuits xi. 261 The modified circuit recycles repeatedly on continuous chains of pulses.

1982 Stain Technol. 57 131 A second interval counter recycles each time a preselected number of sections are cut.

2000 Ann. Noninvasive Electrocardiol. 5 94/1 Absence of both signals identifies the arrhythmia and triggers the defibrillatory shock... If needed, the device recycles automatically.

2005 R. K. Dueck Digital Design with CPLD Applic. & VHDL (ed. 2) ix. 504 An up counter with a modulus of 12 counts through 12 states from 0000 up to 1011 (0 to 11 in decimal), recycles to 0000, and continues.

1962 A. Shepard in J. Glenn et al. Into Orbit 103 Walt decided to recycle the count—or set it back—to allow for this delay.

1970 A. Cameron et al. Computers & Old Eng. Concordances 47 I made a preliminary run and found a large number of keypunch errors that I had missed originally... I decided therefore to recycle.