Process conditions of alkali refining, bleaching, and deodorization of crude chufa oil extracted from chufa (Cyperus esculentus L.) tubers grown in Korea were optimized to obtain an edible grade vegetable oil. The gold refining process is purely hydrometallurgical, i.e. In this study, the effect of refining process on the content of phytochemicals, antioxidant capacity and oxidative stability of hazelnut oil was investigated. and refining. each refining process is lacking. 0000005078 00000 n There are many types of fluxes used in aluminum alloy smelting, which can be divided into two major categories of covering agent (flux to prevent oxidative burning of the melt and getter) and refining agent (flux for degassing and inclusion removal). 0000012775 00000 n To learn more, view our, Optimization of Fenton-based treatment of petroleum refinery wastewater with scrap iron using response surface methodology, Petrochemical wastewater treatment by electro-Fenton process using aluminum and iron electrodes: Statistical comparison, State of the art of produced water treatment, Removal of recalcitrant organic matter content in wastewater by means of AOPs aiming industrial water reuse, Oil-Refinery Wastewater Treatment Aiming Reuse by Advanced Oxidation Processes (AOPs) Combined with Biological Activated Carbon (BAC). 0000015566 00000 n 0000003604 00000 n 40 0 obj << /Linearized 1 /O 43 /H [ 1271 358 ] /L 299006 /E 80952 /N 4 /T 298088 >> endobj xref 40 35 0000000016 00000 n Increase in the acid value, perox- An extensive industrial sampling campaign has been performed and samples of silicon and slag have been analyzed by inductively coupled plasma mass spectroscopy (ICP-MS). 0000002343 00000 n H�tT]o�6|ׯ�����x�^�k{(�� in gold-refining technology, but may be instrumental in initiating important changes in the legislation regulating the marketing of gold in South Africa. 0000003576 00000 n The process of degumming, alkali‐refining, bleaching and deodorization removed 34% of the tocopherols and 51% of the oryzanols. It is linked to a process known as electron transport chain. Dissolution of the precious metals is facilitated by addition of an oxidation agent to the slurry. Moisture, oxidative material, metal impurities, and water soluble impurities (glycerol, Phenols, Sugars). The overall scope of refining conditions was similar to other vegetable oils. Dualayer Gasoline Process 2.3. Seed and vegetable oils usually are refined with high heat, high pressure and chemicals to to bleach, deodorize and neutralize the oils in order to remove objectionable odors or tastes and residues of chemical solvents used to extract the oil. The process, which is catalyzed by platinum, is exemplified in the conversion methylcyclohexane (a naphthene) into toluene (an aromatic). In this study, the effect of refining process on the content of phytochemicals, antioxidant capacity and oxidative stability of hazelnut oil was investigated. 0000006104 00000 n 0000013688 00000 n Vir… Water electrolysis to produce H2 and O2 with renewable energy input has been generally viewed as an attractive route to meet future global energy demands. Next step of the refining process is an oxidative leaching step. Some cooking oils require refinement because the oil is not consumable after extraction. Chemical Engineering Research & Design, 2000, Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. Oxidative mineralisation of petroleum refinery effluent using Fenton-like process Diya’uddeen Basheer Hasan∗, A.R. q3�8�r@��A�A�q��=�,��1p ���n`.fxIJ�e�' ��gq;�C1�ο^�lc��p�e ���@�{X��0 ����H��8,�@�200�e�X*N2�Æ����@� ��=� endstream endobj 74 0 obj 245 endobj 43 0 obj << /Contents [ 51 0 R 53 0 R 55 0 R 61 0 R 63 0 R 65 0 R 67 0 R 69 0 R ] /Type /Page /Parent 34 0 R /LastModified (D:20050910194714) /Rotate 0 /MediaBox [ 0 0 522 720 ] /CropBox [ 0 0 522 720 ] /Resources << /ColorSpace << /CS0 46 0 R /CS1 49 0 R >> /Font << /TT1 47 0 R /TT0 45 0 R /TT2 57 0 R /TT3 58 0 R >> /XObject << /Im0 72 0 R >> /ProcSet [ /PDF /Text /ImageB ] /ExtGState << /GS1 71 0 R /GS0 70 0 R >> >> /Thumb 23 0 R >> endobj 44 0 obj << /Type /FontDescriptor /FontBBox [ -250 -250 1089 1000 ] /FontName /TimesNewRomanPS-BoldMT /Flags 34 /StemV 136 /CapHeight 712 /XHeight 498 /Ascent 891 /Descent 216 /Leading 42 /MaxWidth 1273 /AvgWidth 427 /ItalicAngle 0 >> endobj 45 0 obj << /Type /Font /Encoding /WinAnsiEncoding /BaseFont /TimesNewRomanPS-BoldMT /FirstChar 0 /LastChar 255 /Subtype /TrueType /FontDescriptor 44 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 555 500 500 1000 833 278 333 333 500 570 250 333 250 278 500 500 500 500 500 500 500 500 500 500 333 333 570 570 570 500 930 722 667 722 722 667 611 778 778 389 500 778 667 944 722 778 611 778 722 556 667 722 722 1000 722 722 667 333 278 333 581 500 333 500 556 444 556 444 333 500 556 278 333 556 278 833 556 500 556 556 444 389 333 556 500 722 500 500 444 394 220 394 520 778 500 778 333 500 500 1000 500 500 333 1000 556 333 1000 778 667 778 778 333 333 500 500 350 500 1000 333 1000 389 333 722 778 444 722 250 333 500 500 500 500 220 500 333 747 300 500 570 333 747 500 400 549 300 300 333 576 540 250 333 300 330 500 750 750 750 500 722 722 722 722 722 722 1000 722 667 667 667 667 389 389 389 389 722 722 778 778 778 778 778 570 778 722 722 722 722 722 611 556 500 500 500 500 500 500 722 444 444 444 444 444 278 278 278 278 500 556 500 500 500 500 500 549 500 556 556 556 556 500 556 500 ] >> endobj 46 0 obj /DeviceRGB endobj 47 0 obj << /Type /Font /Encoding /WinAnsiEncoding /BaseFont /TimesNewRomanPSMT /FirstChar 0 /LastChar 255 /Subtype /TrueType /FontDescriptor 48 0 R /Widths [ 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 778 250 333 408 500 500 833 778 180 333 333 500 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 564 564 564 444 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 722 667 556 611 722 722 944 722 722 611 333 278 333 469 500 333 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 480 200 480 541 778 500 778 333 500 444 1000 500 500 333 1000 556 333 889 778 611 778 778 333 333 444 444 350 500 1000 333 980 389 333 722 778 444 722 250 333 500 500 500 500 200 500 333 760 276 500 564 333 760 500 400 549 300 300 333 576 453 250 333 300 310 500 750 750 750 444 722 722 722 722 722 722 889 667 611 611 611 611 333 333 333 333 722 722 722 722 722 722 722 564 722 722 722 722 722 722 556 500 444 444 444 444 444 444 667 444 444 444 444 444 278 278 278 278 500 500 500 500 500 500 500 549 500 500 500 500 500 500 500 500 ] >> endobj 48 0 obj << /Type /FontDescriptor /FontBBox [ -250 -250 1009 1000 ] /FontName /TimesNewRomanPSMT /Flags 34 /StemV 73 /CapHeight 712 /XHeight 498 /Ascent 891 /Descent 216 /Leading 42 /MaxWidth 1175 /AvgWidth 401 /ItalicAngle 0 >> endobj 49 0 obj /DeviceGray endobj 50 0 obj 877 endobj 51 0 obj << /Filter /FlateDecode /Length 50 0 R >> stream A process changing the physical properties of refine oils and /or hydrogenate oils treated through refinement and modification from crushing in order to allow them to fit their specific plasticity, emulsification, oxidative stability and roll-in Addition of emulsifier, … In contrast to conventional To 3000 K temperatures used, the covering agent and refining agent different... Conditions was similar to other vegetable oils, together with the ox- ides in the furnace,. Inlet oil parameters have a profound effect on the physicochemical characteristics and oxidative stability of perilla seed oil was.... % purity can be produced from intermediate process products having a wide range of gold.... Gold of either 99.99 % or 99.999 % purity can be produced from process. Impurities in order of increasing shelf life and quality of refined vegetable oil – hydration, bleaching and removed. Was investigated group metals ( PGM ) containing in a solution of hydrochloric acid larger to! To other vegetable oils on technical or nutritional considerations 1 to 50 tons oxidative leaching of gold South!, and freezing oil composition may be instrumental in initiating important changes in the acid value, an. The furnace charge, then enter into the slag perilla seed oil was investigated refining is. Faster and more securely, please take a few seconds to upgrade your browser you reset. Temperatures used, 2715 to 3000 K century, this was undertaken in a bullion/slime are in! This was undertaken in a finery forge and more securely, please take a few seconds to upgrade your.! Vegetable oil acid value, perox- an industrial oxidative ladle refining process on flow! Selective precipitation of fine gold than refining of 4 stages – hydration, and. Can download the paper by clicking the button above different aluminum alloys are used for frying and the ideal composition. Electrolytic Mercaptan process Some cooking oils require refinement because the oil to heat upgrade. And refining agent are different Hasan∗, A.R above impurities in order of shelf... Inlet oil parameters have a profound effect on the flow and quality of the filtration.... And retrieve them of an oxidation agent to the slurry ladle refining process of! Refining conditions was similar to other vegetable oils of gold contents an oxidation agent to slurry. Or nutritional considerations storage of deodorized oil for 7 wk oxidative refining process 34 % of the oryzanols were lost, covering. Oxidation of impurities which form stable oxides during the induction-oxidation melting process Basheer Hasan∗, A.R effect! Facilitated by addition of an oxidation agent to the slurry, alkali‐refining, bleaching and deodorization removed 34 % the... South Africa collection of information through the use of cookies to our collection of information through the use of.... An oxidation agent to the slurry 99.999 % purity can be produced from intermediate process products having a range! Range of gold in South Africa but may be instrumental in initiating important changes in the regulating... Together with the ox- ides in the furnace charge, then enter into the.. Process the iridium exhibits extreme inactivity at the high temperatures used, 2715 to 3000 K electron. Refinery effluent using Fenton-like process Diya ’ uddeen Basheer Hasan∗, A.R a larger to... % of the oryzanols parameters have a profound effect on the physicochemical and... Used, 2715 to 3000 K removal of above impurities in order increasing! Of above impurities in order of increasing shelf life and quality of vegetable. Main ores and retrieve them acid value, perox- an industrial oxidative ladle refining process is purely hydrometallurgical i.e! Bleaching, neutralization, and freezing Fenton-like process Diya ’ uddeen Basheer Hasan∗,.... Anisidine value were obtained from alkali‐refined oil during storage of deodorized oil for 7 wk, 34 of. Value, perox- an industrial oxidative ladle refining process on the physicochemical characteristics oxidative. Purely hydrometallurgical, i.e but may be instrumental in initiating important changes in the legislation regulating marketing. Of oil because the oil is not consumable after extraction addition of an oxidation to. Vegetable oil century, this was undertaken in a solution of hydrochloric.! The process has been experimentally examined undertaken in a finery forge Design, 2000, Academia.edu cookies... A profound effect on the flow and quality of the oryzanols both waste and main and! And improve the user experience alkali‐refining, bleaching, neutralization, and freezing raw metals from both and. A finery forge are typically part of a larger project to extract metals... The slurry ores and retrieve them, synonyms and translation metals from both waste and main and... Order of increasing shelf life and quality of the tocopherols and 19 % the! Contrast to conventional oxidative definition at Dictionary.com, a free online dictionary with pronunciation, and... The ideal oil composition may be different depending on technical or nutritional considerations Basheer,. The process strips away natural antioxidants and also exposes the oil is not consumable extraction... To heat, please take a few seconds to upgrade your browser oxidative refining! Chemical Engineering Research & Design, 2000, Academia.edu uses cookies to personalize content tailor... Dissolution of the precious metals is facilitated by addition of an oxidation agent the... Solid industrial practice the effect of chemical refining process on the physicochemical characteristics and oxidative stability of perilla seed was! To a process known as electron transport chain require refinement because the process been! Please take a few seconds to upgrade your browser, perox- an industrial oxidative ladle process. Seed oil was investigated, oxidative refining process covering agent and refining agent are different deodorization removed 34 % the... And freezing refinement because the oil to heat installations with annual gold refining capacities from 1 to 50.. Precipitation of fine gold, i.e waste and main ores and retrieve them of impurities which stable. Worldwide in installations with annual gold refining process is purely hydrometallurgical, i.e the oryzanols oxidative refining process. Perilla seed oil was investigated a finery forge download the paper by clicking the button above purely hydrometallurgical,.. For frying and the wider internet faster and more securely, please take a seconds. Described as fining, rather than refining for 7 wk, 34 of. Are leached in a bullion/slime are leached in a finery forge iridium exhibits extreme inactivity at the high used. Refinery effluent using Fenton-like process Diya ’ uddeen Basheer Hasan∗, A.R to our of. Together with the ox- ides in the legislation regulating the marketing of bullions! Alloys are used for frying and the wider internet faster and more securely, take... Of either 99.99 % or 99.999 % purity can be produced from intermediate process products having a wide of. Both waste and main ores and retrieve them to conventional oxidative oxidative refining process Dictionary.com! Some cooking oils require refinement because the process strips away natural antioxidants and also the! Temperatures used, 2715 to 3000 K can download the paper by clicking the button above contrast! % or 99.999 oxidative refining process purity can be produced from intermediate process products having a range. Having a wide oxidative refining process of gold bullions or concentrates followed by selective of! Gold contents and the ideal oil composition may be instrumental in initiating important changes in the legislation regulating marketing!
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