2 edition of Fractionation of waste sulfite liquor found in the catalog.
Fractionation of waste sulfite liquor
Bert Santford Rusk
Written in English
|Statement||by Bert Santford Rusk.|
|The Physical Object|
|Pagination||23 leaves, bound :|
|Number of Pages||23|
As an article of manufacture, a dried cellulosic corrugated medium, including waste fiber material, to which has been added at the wet press or size press from about 5 to 30 percent by weight of waste sulfite liquor, said waste liquor having been neutralized prior to addition to said medium to a pH of about to with sodium aluminate and. Lignosulfonates, present in spent sulfite waste liquor which results as a by-product of paper pulping operations, represent a particularly attractive source of raw material for conversion into more valuable products, particularly since waste liquor disposal is a problem for many paper manufacturers who must meet pollution standards.
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FRAC T IONAT ION 0F WASTE SJLF ITE LIJ OR I INTRODUCTION In the manufacture of sulfite pulp, the essential feature of the process is the removal of the lignin from the results in the formation of water soluble lignin sulfonic acids, the latter existing as their calcium salts in the so-called waste sulfite liquor.
Walker (17) describes the waste liquor as a dark. Fractionation of spent sulfite liquors using ultrafiltration cellulose acetate membranes.
Iqbal K. Bansal; and ; Pretreatment of spent sulphite liquor via ultrafiltration and nanofiltration for bio-based succinic acid production. Isolation and fractionation of lignosulfonates by amine extraction and ultrafiltration: A comparative study.
Cited by: Spent sulfite liquor is a lignocellulosic waste obtained after the sulfite pulping process. It is mainly formed by sugars and lignosulfonates which are isolated from the pulp during the cooking.
Electronic books: Additional Physical Format: Print version: Forss, Kaj. Composition of a spent spruce sulfite liquor. Borgå: Tryckeri & Tidnings Ab, (OCoLC) Material Type: Document, Thesis/dissertation, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: Kaj Forss; Åbo akademi ().
Conversion of Spent Sulfite Liquor into Chromium Lignosulfonates and Its Evaluation as a Drilling Fluid Additive. Energy Sources8 (), DOI: /Cited by: 8. bleaching effluent from sulfite pulp production by successive fractionation using tubular ceramic membranes, aiming to minimize the COD and thus reduce waste disposal costs while recovering valuable waste products and by-products such as lignin derivatives (e.g., lignosulfonates).
Article Views are the COUNTER-compliant sum of full text article downloads since November (both PDF and HTML) across all institutions and individuals. Spent sulfite liquor is an abundant but currently less used wastewater stream from the pulp and paper industry.
The recovery of lignin from this resource would provide an inexpensive raw material for the manufacture of fuels and fine chemicals.
Here we investigated the suitability of ceramic hollow-fiber membranes for the concentration of spent sulfite liquor as an alternative to common.
Introduction. Waste water reuse is a globally imperative component of sustainable water management .The pulp and paper industry produces substantial volumes of polluted waste water  (~– m 3 per ton paper ) Fractionation of waste sulfite liquor book is also one of the largest consumers of fresh water (~– m 3 per ton paper ) [1,4,5] (Figure 1).The volume and characteristics of waste water differ according.
Waste water reuse is a globally imperative component of sustainable water management .The pulp and paper industry produces substantial volumes of polluted waste water  (~– m Fractionation of waste sulfite liquor book per ton paper ) and is also one of the largest consumers of fresh water (~– m 3 per ton paper ) [1,4,5] ().The volume and characteristics of waste water differ according to the type of raw.
Fractionation of waste sulfite liquor Public Deposited. Analytics × Add. The waste liquor does not contain sufficient nitrogen and phosphate for normal fermentation, and these must be supplied in a suitable form, with the yeast extract or otherwise.
In Ekstrom's method, a yeast specially acclimatised to sulphite liquor is used. In Landmark's process, milk or whey is heated with acid, the precipitate separated, and. The invention relates to a method for the fractionation of sulphite cooking liquor by a chromatographic simulated moving bed system in which the liquid flow is effected in a system comprising at least two chromatographic sectional packing material beds.
In this method, at least one fraction enriched with monosaccharides and one fraction enriched with lignosulfonates are recovered during a. USA USA USA USA US A US A US A US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords waste liquor fermentation sulphite waste sulphite treatment Prior art date Legal status (The legal status is an.
AVAP® fractionation was performed in rotating oil bath reactors on o.d. g material (25 o.d. g per reactor) using SO 2-ethanol-water solutions at Liquor-to-Solid (L/S) ratio of 4 kg/kg and 60 min retention time (excluding heat-up time) at target temperatures of °C (Fractionation conditions No.1), °C (No.2), °C (No.3), °C.
Recently, fractionation of spent cooking liquor (black liquor) in the kraft chemical pulping process has attracted the interest of scientific researchers and the pulp and paper industry. Fractionation of cooking liquor from sulphite and kraft pulp. P.S. Nigam, A. Singh, in Encyclopedia of Food Microbiology (Second Edition), Pekilo Process.
Pekilo is a fungal protein product produced by fermentation of carbohydrates derived from spent sulfite liquor, molasses, whey, waste fruits, and wood or agricultural has a good amino acid composition and is rich in vitamins.
Background The spent sulfite liquor is a by-product obtained in the process of manufacturing dissolving pulp by the acid sulfite method. A full physico-chemical characterization of this waste has.
Isolation of vanillin from alkaline oxidized spent sulfite liquor. Kaj G. Forss, Esko T. Talka, and ; Fractionation of acids, ketones and aldehydes from alkaline lignin oxidation solution with SP resin.
Adsorption and separation of black liquor-derived phenol derivatives using anion exchange resins. black liquor by skimming → the liberation of carboxylic acids (resin and fatty acids) with H 2 SO 4 → CTO (the average yield kg/ton of pulp, corresponding to % of the initial amount) PURIFICATION AND FRACTIONATION BY VACUUM DISTILLATION ( mBar, oC): –LIGHT OIL % –FATTY ACIDS % –ROSIN %.
The inventi on discloses a method for extracting sodium carbonate and sodium thiocyanate from sodium alkali desulfurization liquid waste by using a causticization-acidification method and belongs to the technical field of desulfurization liquid waste treatment.
The method comprises the following processes: pertreating liquid waste for removing impurities, heating for decomposing and. Membrane technology is also scalable and adaptable to different waste liquors from the pulp and paper industry.
Keywords: ceramic membrane; lignin treatment; lignin fractionation; lignosulfonate; spent sulfite liquor 1. Introduction Lignin is a phenolic macromolecule that combines with cellulose to form lignocellulose, the most. Request PDF | Technoeconomic assessment of different biorefinery approaches for a spent sulfite liquor | BACKGROUND: Spent sulfite liquor, a by-product obtained in the process of manufacturing.
In this study, the fractionation of sugarcane bagasse at low liquor-solid ratio (LSR) was firstly reported. The effect of low LSR fractionation of sugarcane bagasse by hot water autohydrolysis and organosolv delignification that consume minimal amounts of water was studied to obtain a cellulosic fraction (glucans) that is suitable for conversion to ethanol.
The waste material from these processes (black liquor and spent sulfite liquor, respectively) is a complex mixture of organic and inorganic molecules. The global paper industry produces more than 5 × 10 7 tonnes of modified lignin every year, dissolved in the waste liquor.
Approximately 99% of this waste liquor is incinerated to produce. H.L. Hintz, in Encyclopedia of Materials: Science and Technology, Sulfite and Solvent Pulping Processes. In sulfite pulping, usually conducted under acid or neutral conditions, sulfur dioxide and/or bisulfite ions react with lignin to produce water-soluble sulfonated lignins that are degraded by acid hydrolysis e pulping can be controlled to produce pulps over a wide.
Books. An illustration of two cells of a film strip. Video. An illustration of an audio speaker. Audio. An illustration of a " floppy disk. Utilization of waste sulphite liquor [microform]: a review of the literature Item Preview remove-circle Share or Embed This Item.
Sulfite Waste Liquor Concentration, Technical Information Paper TIP () A graph is presented for the estimation of the solids concentration of sulfite waste liquors based on the measurement of liquor specific gravity. The surface activity of spent sulphite liquor (SSL) and the separation of surface active components by foam fractionation were studied.
The maximum activity (lowest surface tension) of SSL was observed at a high pH. The surface tension was found to be 42 mN/m and 38 mN/m at acidic and basic pH values, respectively, and also a maximum foaminess (Σ) of 7 min was observed at pH Foam.
Utilization of waste sulphite liquor by Bjarne Johnsen,J. de L. Taché, printer to the King's most excellent majesty edition, in English. As an abundant and cheap by-product of the sulfite cooking process of wood for pulp and paper production, spent sulfite liquor contains high amounts of a variety of different hexose and pentose.
This study demonstrates sulfite pretreatment to overcome recalcitrance of lignocellulose (SPORL) for robust bioconversion of hardwoods.
With only about 4% sodium bisulfite charge on aspen and 30‐min pretreatment at temperature °C, SPORL can achieve near‐complete cellulose conversion to glucose in a wide range of pretreatment liquor of pH – in only about 10 h enzymatic hydrolysis.
The fractionation experiments are carried out at °C, °C, and °C for 20– min at fixed liquor composition (SO2/EtOH/H2O=, w/w) and liquor to feedstock ratio (4 l kg⁻¹). Organosolv pulping is a two-stage process involving hydrolysis (decomposition of wood by use of a catalyst) and removal of lignin with an organic solvent (usually a mixture of alcohol and water).
The main disadvantage of using an alcohol is its low boiling point, which requires operating at a high pressure and hence using special equipment that is expensive to purchase and operate. Sulfite (or bisulfite) wood pulping process lignin is recovered from the spent pulping liquor, known as "black liquor," as lignosulfonates; whereas, kraft (or sulfate) wood pulping process lignin is recovered from the black liquor as the sodium salt of lignin (products marketed under the Indulin® mark by Westvaco Corporation).
More specifically, the waste sulfite liquor sold under the trademark ORZAN AL was used for these tests. ORZAN AL is a specific waste sulfite liquor made from hemlock and contains ammonium cations, lignosulfonic acids having molecular weights ranging from about 6, to 50, (average weight,), and about 11 percent sulfonic groups.
Henry BS, Partansky AM. The Rate and Extent of Anaerobic Decomposition of Sulfite Waste Liquor by Bacteria of Sea Bottom Mud: II.
Bacteriological. Proc Natl Acad Sci U S A. Apr; 21 (4)– [PMC free article] Reddish GF, Rettger LF. A MORPHOLOGICAL, CULTURAL AND BIOCHEMICAL STUDY OF REPRESENTATIVE SPORE-FORMING ANAEROBIC BACTERIA.
Benson HK, Partansky AM. The Rate and Extent of Anaerobic Decomposition of Sulfite Waste Liquor by Bacteria of Sea Water Mud. Proc Natl Acad Sci U S A. Oct; 20 (10)– [PMC free article] Henry BS, Partansky AM. The Rate and Extent of Anaerobic Decomposition of Sulfite Waste Liquor by Bacteria of Sea Bottom Mud: II.
Bacteriological. Get this from a library. The pollution of streams by sulphite pulp waste: a study of possible remedies. [Earle B Phelps; Geological Survey (U.S.),; Massachusetts Institute of Technology.
Sanitary Research Laboratory and Sewage Experiment Station.]. Autohydrolysis. The experiment was prepared by extracting the poplar wood with hot water.
In this study, autohydrolysis was conducted in 1 L pressure vessels and each run used 30 g wood chips (in oven dry weight), together with a predetermined amount of deionized water to reach a liquid-to-wood (L:W) ratio of or total solid loading of 25 wt %.
The application of NS-AQ method reduces the organic content in the waste liquor, and the yield of the slurry is higher, which indicates that neutral sulfite pulp can compete with the kraft pulp. However, the recycling of waste liquid would reduce the removal rate of lignin, and the yield and quality of the slurry may be reduced.waste, energy plants, etc.) is of importance for the critical sustainable development of human society.
As known, to achieve efficient utilization of lignocelluloses, pretreatment and fractionation are highly needed to break the natural resistance of lignocellulosic biomass.
2. the 3 to 4% content, this vanillin sells for US$ to $ per kg. Vanillin, from waste sulfite liquor, sells in bulk for about US$16 per kg.
 It is the main flavour ingredient in synthetic vanilla extract, as well as a flavour component of many commercial food products.