Disposal bins

Disposal bins have been studied for the VOCs associated with them by Stathero-poulos, Agapiou and Pallis (2005). The most prominent classes of compounds emitted are generally aliphatic and aromatic hydrocarbons, esters, terpenes and alcohols. The highest median concentrations for a single compound was 649.9 tg/ m 1 for decane while median concentrations of several other compounds such as limonene, undecane, nonane, ethanol, acetic acid ethyl ester and 1, 2,4-trimethylbenzene are in the range 159.1-353.1 pg/nf3. Therefore, waste bins are not only sources of odorants but sources of VOC as well. 

Do not put broken glass, pipette tips or needles in the normal waste - use the SHARPS disposal bins provided. 

The cleaning cycles are usually controlled by a timing device which deactivates the section being cleaned. The dusts removed during cleaning are collected in a hopper at the bottom of the baghouse and then removed, through an air lock or star valve, to a bin for ultimate disposal. 

Cake disposal is relatively straightforward. Cakes may be discharged into bins that are trucked away or transported with a belt conveyor. With very large filter presses a well formed cake may weigh 200-300 kg per chamber and when it falls into a bin or onto a belt conveyor in one solid piece the impact is very high. Hence, special measures are required to break and de-lump the sole hard cake and, for belt conveyors, it is also recommended to increase the number of belt support rollers below the discharge chute at the point of impact. 

Granular and other bulk materials processing and conveying, bag emptying and disposal, and similar operations air into the process enclosure. Induced air picks up dust. If the system component, such as a bin, is tight, the induced air will reverse its path and carry the entrained dust back through the upstream opening, as shown in Fig. 7.4. ... 

Hopper A collection bin for the supply or disposal of powdered or granular material... 

You will also need a means of determining when the retention time has expired so that if necessary you can dispose of the records. The retention time doesn t mean that you must dispose of the records when the time expires - only that you must retain the records for at least that stated period. Records will need to be dated, the files that contain the records dated, and, if stored in an archive, the shelves or drawers dated. It is for this reason that all documents should carry a date of origin and this requirement needs to be specified in the procedures that describe the records. If you can rely on the selection process, a simple method is to store the records in bins or on computer disks that carry the date of disposal. 

Discarded aluminum cans are disposed oi in a red collection bin to be recycled and then reclaimed at Portsmouth Recycling Center. (Corbis Corporation)... 

Interaction is exothermic, and if air is present, incandescence may occur with freshly prepared granular material. Admixture with oxygen causes a violent explosion [1], Soda-lime, used to absorb hydrogen sulfide, will subsequently react with atmospheric oxygen and especially carbon dioxide (from the solid coolant) with a sufficient exotherm in contact with moist paper wipes (in a laboratory waste bin) to cause ignition [2], Spent material should be saturated with water before separate disposal. Mixture analogous to soda-lime, such as barium hydroxide with potassium or sodium hydroxides, also behave similarly [1],... 

Interaction is violently exothermic, and the heat evolved with water at 20° C is enough to ignite evolved hydrogen. Larger pieces of potassium invariably explode in water and scatter binning potassium particles over a wide area. Aqueous alcohols should not be used for waste metal disposal [1], Small pieces of potassium will also explode with a restricted amount of water [2], The reactivity of potassium and other alkali metals with water has been discussed in detail. The vigour of... 

After storage for 16 years in a tin, a sealed bottle originally holding sodium dispersed in xylene was found to contain a yellow/white solid layer in place of the expected supernatant xylene. Scraping the solid out caused a violent explosion. The force of the explosion leads to a suspicion of peroxide formation, but there is no obvious explanation. Reactive materials like alkali-metal dispersions in volatile solvents should not be stored indefinitely, but clearly labeled after receipt or preparation to show the disposal date. Disposal of such dispersions by binning is recommended. Sodium dispersed in toluene might behave in the same way. 

In addition to being harmful to the individual, many chemicals are hazardous to the environment, so waste chemicals must not be put down the sink or into the rubbish bins unless this is stated to be safe. Waste solvent and reagents must be put into appropriate waste bottles. Chlorinated and nonchlorinated solvents are usually kept separately and then sent for disposal by external contractors. Broken glass or needles and scalpels are to be disposed of in sharps containers. 

The increasing use of disposable paper towels and wipes in chemical laboratories accentuates the potential fire hazards arising from the disposal of solid oxidising agents or reactive residues into a bin containing such towels or wipes. The partially wet paper, necessarily of high surface area and absorbency, presents favourable conditions for a fire to be initiated and spread. Separate bins for paper towels etc., and chemical residues seem advisable. 

Soda-lime, after absorbing hydrogen sulfide, exhibits a considerable exotherm (100°C) when exposed simultaneously to moisture and air, particularly with carbon dioxide enrichment, and has caused fires in laboratory waste bins containing moist paper wipes. Saturation with water and separate disposal in sealed containers is recommended. 

All sharp disposables should be handled carefully and disposed in containers specifically assigned for sharps. DO NOT dispose sharps in regular bins. 

In order to remove the suspended solids, the purge treatment system contains a clarifier to separate the suspended solids and a filter press or dewatering bins to concentrate the solids into a filter cake, which is cohesive and can be readily disposed. The scrubber purge enters the clarifier from a deaeration tank. The solids settle out in the clarifier and are removed from the clarifier in the underflow. The underflow from the clarifier is sent to a filter press or dewatering bins where the excess water is removed. The solids are sent to disposal while the water is returned to the clarifier. The effluent is then sent to the oxidation towers. 

After the distillation of tetraethyllead, the dross from apparatus 16 (lead, sodium chloride, oil, some impurities and water) is cooled and loaded into special trolley bins 14. The solution of sodium chloride and oil from the bins are sucked after settling into special montejuses, from where through traps they are sent to waste disposal works. The dross is pumped with pump 15 into the furnace to regenerate lead. 

This scrap metal includes metal munitions casings after the chemical agent has been drained and the casings have been treated in the MPF. Drained bulk containers and metal munition casings and components are treated in the MPF to destroy agent residues. After treatment in the MPF, the metal parts are allowed to cool, vacuumed to remove loose paint flakes and ash residue, and stored temporarily in roll-off bins prior to shipment off-site. Munition bodies and empty TCs are carbon steel and may be recycled by smelting at either a commercial recycling facility or the Rock Island Arsenal,6 or disposed of at a hazardous waste landfill. 

In September 2004, Novamont acquired the Eastar Bio technology of Eastman Chemical for an undisclosed sum. The deal includes all patents and technology rights but not production facilities or distribution channels. Eastman introduced its biodegradable polymer in 1997 and since then has invested more than 75m in the project. The resin is used commercially for single-trip disposable packaging, as well as for barrier films and waste-bin liners. Eastman has a 15,000 tonnes per annum production plant at Hartlepool in the UK, which was started up in 1999, for production of Eastar Bio products. 

The reaction is exothermal. Under certain conditions so much heat may be produced that the precipitate dries out, and the filter paper, with the finely distributed sulphur on it, catches fire. Sulphide precipitates therefore should never be disposed of into a waste bin, but should rather be washed away under running water only the filter paper should be thrown away. 

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