catalyst market size share industry report, 27the global catalyst market size was valued at usd 33.9 billion in and is expected to grow at a compound annual growth rate (cagr) of 4.4% from to 27. the escalating demand for catalysts from applications including chemical synthesis, petroleum refining, polymers and petrochemicals, and environmental is driving demand for processcpcb central pollution control boardutilization of spent tio2nacl cake generated from process residue/waste containing chloride from the catalyst manufacturing industries for recovery of titanium dioxide. utilization of spent sodium hypo chlorite along with fresh/spent caustic solution for manufacturing of sodium hypochlorite.amax port nickel a new dimension in reclaiming spentabstract. the port nickel plant, which is known for pioneering new hydrometallurgical technology for nickel laterites and nickelcobaltcopper mattes, was converted in 86 to process a variety of spent hydrotreating catalysts. the spent catalysts are completely reclaimed to recover products of vanadium pentoxide, molybdenum trisulfide, aluminadinesh kumar assistant general manager rubamin solvent extraction process operation (cyanex, pc88, ion quest, versetic10, dehpa, lix, acorga, and alamin336. etc.) plant operation/process improvement to achieve targeted result. optimisation of standard parameter and techniques to control solvent losses. molybdenum recovery from spent catalyst. via solvent extraction. tungstentitle assistant general managercobalt recovery from waste catalysts (petroleum refiningthis spent catalyst mostly consists of mo, co, ni, fe, si, al as their oxides. to bring the cobalt content into solution from the fine powder, spent catalyst 5 gm of this powder catalyst is roasted with 10 gm of flux material like sodium carbonate taken in a clay crucible, and heated inrecovery of vanadium and molybdenum from spentthe study of the leaching of vanadium (v) and molybdenum (mo) from spent petrochemical catalysts in sodium hydroxide (naoh) medium was performed using two approaches, namely, conventional leaching and microwaveassisted leaching methods. the influence of microwave power, leaching time, leaching temperature, and naoh concentration on the leaching efficiency of spent petrochemical catalyst evaluation of molybdenum recovery from sulfurin this article a new spent catalyst sample preparation method was implemented for the purpose of molybdenum leaching in a single step. further molybdenum and vanadium in the leach liquor were separated and their concentrations were enriched using the solvent extraction and stripping techniques. the impervious sulfur (s 0 ) layer of the spent catalyst sample was removed using carbon disulfideevaluation of molybdenum recovery from sulfur removedfeb 06, · further molybdenum and vanadium in the leach liquor were separated and their concentrations were enriched using the solvent extraction and stripping techniques. the impervious sulfur (s 0) layer of...cited by 5
tender disposal of spent catalyst bharat petroleum1.1. bpcl intends to dispose of disposal of spent catalysts containing molybdenum, nickel, cobalt etc. from dhds plant at bpcl mumbai refinery on as is where is basis . the spent catalyst consists of various various catalysts used in the above units, offloaded from the reactors packed in metal drums as per details given below. sr.navin mittal founder ceo hydromet technologykey products include cobalt, copper and nickel metal compounds, molybdenum compounds from spent catalysts, zinc compounds from secondary sources like zinc ash, manganese sulphate etc. guided team in the design of leaching, purification and solvent extraction circuits including d2ehpa, cyanex 272, pc 88a and acorga.title chief executive officer atmetal recovery from hydroprocessing spent catalyst athe present study aims to develop an ecofriendly, chelantassisted extraction methodology for significant recovery of heavy metals (cobalt (co), molybdenum (mo)) from hydroprocessing spent catalyst. ethylene diamine tetraacetic acid (edta) was employed for metal mobilization in the extraction process. the possibility of internal and external mass transfer resistance was investigated to improveimpact of pulp density on extraction of metals, bythe minimum aluminum and iron extraction were found 4.33±1.47 and 1.64±1.23 mg at gm with the metal extraction percentage of 25.32 and 46.23 respectively. the highest bioextraction efficiency of aluminum and iron was observed 50.28% at the 4 gm ore and also found to be most favourable for extraction of metals from lowgrade bauxite ore.hydrodesulfurization hydrodesulfurization (hds) is a catalytic chemical process widely used to remove sulfur (s) from natural gas and from refined petroleum products, such as gasoline or petrol, jet fuel, kerosene, diesel fuel, and fuel oils. the purpose of removing the sulfur, and creating products such as ultralowsulfur diesel, is to reduce the sulfur dioxide (so 2) emissions that result from using those fuelsseparation and recovery of vanadium from spent vanadiumwastes, spent catalysts and other by products. among secondary resources, the metal recovery from spent catalyst is gaining interest due to both, its hazardous nature and stringent regulations associated with disposal methods (furimsky 96; srichandan et al. ). the life of a catalyst varies from 3 to 6 s depending upon the impurpreparation and characterization of molybdenum xideprocessing via fusion is also an option for utilization of spent catalyst . recovery of molybdenum compound from the leached liquor is another course like carbon adsorptiondesorption studies [3,8] and solvent extraction . in this paper the preparation and characterization of molybdenum xide from the hds spent catalyst throughrecovery of nickel from spent ni/al2o3 catalysts usingspent catalysts, when in contact with water, can liberate toxic gases as well5. as a result of stringent environmental regulations on spent catalyst handling and disposal, research on the development of processes for the recycling and reuse of waste spent catalysts has received considerable attention5.
us6733564b1 process for recovery of nickel from spentthe present invention relates to a process for recovery of nickel and alumina from spent catalyst by direct leaching with sulphuric acid in presence of small amount of an additive. the invention is useful for recovery of both nickel and sources of nickel and therefore important from the view of environmental protection, resource recycling and conservation.solid waste memorial university of newfoundlandeffective leaching agent to dissolve metals from our spent catalyst samples. two aminebased extractants (alamine308 alamine336), and one quaternary ammonium salt (aliquat336) were diluted in toluene and were tested for cobalt, nickel, and molybdenum extraction from leached catalysts inseparation of molybdenum and cobalt from spent catalystresults and discussion extraction of molybdenum with cyanex 272the leach liquor of the spent catalyst contains .52 g/l molybdenum, 1.74 g/l cobalt and 9.98 g/l aluminum. from some preliminary experiments it was observed that cyanex 272 extracts molybdenum at lower ph than cobalt.estimated reading time 10 minsrecovery of molybdenum by solvent extraction fromjul , · molybdenum is one of the crucial refractory metals used for many industrial applications such as a catalyst in petrochemicals, an alloying element in steels, nuclear industry, aircraft parts and in nuclear medicine (ca. 99 mo and its decay product 99m tc). different methods have been reported for the extraction of mo from hllw.extraction of molybdenum and vanadium from the spentmolybdenum (mo) and vanadium (v) were effectively extracted from the spent diesel exhaust catalyst (v2o5moo3/tio2) by using an ammonia leaching method. meanwhile, the structure of the spent catalyst carrier (tio2) was not destroyed and might be reused. the effects of ammonia (nh5·h5o) concentration, leaching temperature and time, concentration of hydrogen peroxide (h5o2) and liquid to solid ratio on the extractionreforming catalyst made from the metals recovered fromfeb 01, 92· extraction of molybdenum, nickel and aluminium from spent nimo hydrodesulphurization (hds) catalyst in oxalic acid solutions. recovery of vanadium from spent catalysts of sulfuric acid plant by using inorganic and organic acids laboratory and semipilot tests. waste management , 49 , 455461.elemental asia india spent catalytic converter recyclingcatalyst recycling processes are aimed at recovering precious metals for reuse. recycling of automotive catalysts enables recovery of up to 95% of platinum content, it also saves significant amounts of energy as compared to traditional mining (processing of 1 ton of spent catalysts prevents the extraction of 0 tons of ore or alternatively 400molybdenum mining and processingmetalpediamolybdenum mines are classified into three groups according to the minerals contained in the ore body and their quality primary mines, where the extraction of molybdenite is the sole aim. byproduct mines, where the extraction of copperbearing ores is the primary aim, and molybdenite extraction provides additional economic value.