ASTM_D_6050_-_09.pdf

Designation:D605009Standard Test Method forDetermination of Insoluble Solids in Organic LiquidHazardous Waste1This standard is issued under the fixed designation D6050;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the ap-proximate amount of insoluble,suspended solid material inorganic liquid hazardous waste(OLHW).1.2 This test method is intended to be used in approximatingthe amount of insoluble,suspended solids in determining thematerial handling characteristics and fuel quality of OLHW.Itis not intended to replace more sophisticated procedures for thedetermination of total solids.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:D96 Test Method for Water and Sediment in Crude Oil byCentrifuge Method(Field Procedure)23.Summary of Test Method3.1 A 10-mL aliquot of OLHW sample is decanted into a15-mL graduated centrifuge tube and centrifuged for 3 min.The separated liquid phase of the OLHW is decanted into anappropriate waste vessel.The centrifuge tube with the sepa-rated solid material is brought back to its original 10-mLvolume with a user-selected blend of clean solvents andagitated to mix the solid and liquid phases.The tube iscentrifuged for 2 min,and the amount of remaining solidmaterial is read.4.Significance and Use4.1 Ahigh percentage of insoluble,suspended solid materialcan create pumping,filtering,or grinding difficulties in theoff-loading of bulk shipments of OLHW and can contribute toexcessive wear on processing equipment.High solids can alsodecrease the quality and consistency of commingled solutionsby decreasing the effectiveness of agitation in storage tanks.These issues are of concern to the recycling industries(solvents,paints,and other materials handled in significantquantities)in addition to those activities that propose to use thewaste as a fuel.5.Apparatus5.1 CentrifugeCapable of spinning two or more centrifugetubes at a speed controlled to give a relative centrifugal forceof between 1200 to 1400.The speed to achieve this is generallybetween 3100 to 3600 rpm.The rotation speed necessary toachieve the relative centrifugal force can be determined fromone of the following equations:rpm5 1335rcfd(1)rpm5 265rcfd(2)where:rpm=rotation speed,in revolutions per min,rcf=relative centrifugal force,d=diameter of swing,in mm(Eq 1)or in.(Eq 2),measured between the tips of opposite tubes when thetubes are in rotating position.NOTE1Eq 1 and Eq 2 are described in Test Method D96.5.2 Centrifuge Tubes Centrifuge tubes shall be coneshaped,made of glass or a solvent resistant plastic or polymer,have a minimum capacity of 15 mL when filled to volume,andgraduated with minimum subdivisions of 0.5 mL.Class Acentrifuge tubes are recommended.If any grade other thanClass A is used,refer to the section on Calibration andStandardization.6.Reagents and Materials6.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents conform to the specifications of the Committee onAnalytical Reagents of the American Chemical Society where1This test method is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.06 onAnalytical Methods.Current edition approved Feb.1,2009.Published May 2009.Originallyapproved in 1997.Last previous edition approved in 2003 as D6050 97(2003)1.DOI:10.1520/D6050-09.2Withdrawn.The approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 such specifications are available.3Other grades may be used,providing that it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.6.2 Clean Solvent BlendThe user should formulate theclean solvent blend based on the“average”normal chemicalcomposition of the commingled OLHW.The chemical compo-sition of OLHW is usually determined by gas chromatographicanalysis.The clean solvent blend will vary in complexitydepending on the specifications of the user.NOTE2The clean solvent blend may be as simple as a singlecomponent(for example,toluene)or a complex mixture of aliphatic andaromatic hydrocarbons,alcohols,esters,ketones,ethers,terpenoids,andhalogenated compounds.The user should formulate the clean solventblend based on compositional knowledge of the OLHW that the samplem