spent acid recovery process

chromium. In either case, the spent nitric acid is useful for recycling. PhibroTech has a proprietary recovery process for nitric acid containing copper and nickel. Nitric acid used to strip nickel from stainless steel or aluminum parts is also useful for recycling. Spent Nitric Acid Rack Strip

spent liquor generated during the above process represents a major environmental issue although many studies are reported for the recovery of valuables from it [9 15]. Pyro hydrolysis of the spent liquor for recovery of hydrochloric acid [16 18] generates an impure iron oxide

Spent acid water recovery machine – Micro Sludge K16 is the crux of a long research towards better and efficient sludge control process.. Advantages:Saves huge quantity of Lime (Economical) Control Sludge producing upto 7075%. Reduction in handling cost of .

Recovery and concentration is possible in this case. The acid is preheated and fed into a stripping column, which removes the organic material using steam. The acid is then vacuum distilled to concentrate it. Important features in the process designed by Kvaerner Chemetics are:

An innovative solution for the recovery of hydrochloric acid and liquid waste treatment from exhausted metal pickling baths. The Chemirec® process has been conceived as a highly innovative solution for the recovery of hydrochloric acid (HCl) from the effluents of exhausted metal pickling baths.

and solid material that typically originate during the reprocessing of spent nuclear fuel by the Purex process. The liquids are radioactive highlevel liquid waste and the solution obtained on dissolving the spent nuclearfitel in nitric acid (dissolver solution). The solid is .

Nov 20, 2002· In particular, the invention provides recovery of those acids from spent acid residue by extraction including steps of diluting the spent acid residue with the acid or a mixture of an alkyl ammonium salt of the acid and the acid to obtain a liquid from which the extraction of acid .

recovery of spent lead acidbattery. The samples were washed with distilled water to remove remaining sulfuric acid until de pH value above The chemical composition of the lead paste from the spent lead acidbattery given in Table 1, was determined by the inductively coupled plasma .

The used acid would start to crystallize to the sides and to the bottom of the holding tank then we would pump out of the center then return the solution back to the process and use it for makeup on for the other baths of acid.

A leaching process for the recovery of cobalt and lithium from spent lithiumion batteries (LIB) is developed in this work. Three different organic acids, namely citric acid, malic acid and aspartic acid, are used as leaching reagents in the presence of hydrogen peroxide.

Figure 1: Beta Control's Hydrochloric Acid Recovery System. Description of Process A centrifugal pump forces the spent hydrochloric acid through a prefilter and into the evaporator loop, comprised of the main exchanger and the separator. In the evaporator loop, the spent acid is heated to vaporization.

Typical kraft sulfate pulping and recovery process. ... Acid Sulfite Pulping Process Description ... and/or chemical recovery. In calcium base systems, found mostly in older mills, chemical recovery is not practical, and the spent liquor is usually discharged or incinerated. In ammonium base operations,

Recovery of Vanadium from Acid and Basic Leach Solutions of Spent Vanadium Pentoxide Catalysts 214 expected to grow at about 5% annually. China, South Africa and the USA produce vanadium pentoxide from vanadium bearing magnetite ores, concentrates and slags while Japan produce vanadium pentoxide from petroleum residues, ash, and spent catalysts.

Liquor By Precipitation Process Kamruzzaman Khan1, Md. Istiaq Habib Khan2,Iftakharul Islam Khan1,Abdullah ... Chromium recovery from spent liquor Chromium recovery procedure from spent chrome tanning liquor is given below: ... The chrome sludge was dissolved in 98% concentrated Sulfuric Acid until a pH of was reached.

lena dahlgren treatment of spent pickling acid from stainless steel production a review of regeneration technologies with focus on the neutralisation process for implementation in chinese industry presented at industrial ecology royal institute of technology

Abstract. A hydrometallurgical method involving natural organic acid leaching has been developed for recovery of lithium and cobalt from the cathode active materials in spent lithiumion batteries.

Recovery of spent Nitric Acid for reuse in the process or for resale Removal of Nitric Acid from waste water for yield and/or environmental reasons PLINKE also offers NOx Absorption technology for maximum yields and lowest environmental emissions, as well as acid treatment and stabilization options to ensure the desired Nitric Acid quality is ...

As environmental and transportation regulations become more stringent around the world, treating spent acids is becoming less of an option and more of a necessity Acids play many different roles in a large number of sectors of the chemical process industries (CPI).