28-08-2017· Color, the major indicator of the wastewater pollution, was reduced down to 370 PCU on applying ODL stage prior to bleaching the soda-AQ rice straw pulp. Likewise, trends of reduction in effluent color were also observed by Mukherjee and Bandyopadhyay 1993 on applying the ODL stage and DED sequence on kraft pulp.
THE PATENT ACT 1970 (39 of 1970) & The Patents Rules, 2003 COMPLETE SPECIFICATION (See section 10 and rulel3) 1. TITLE OF THE INVENTION: "Novel compositions for biobleaching coupled with stone washing of indigo dyed denims and process thereof 2. APPLICANT (a) NAME: ADVANCED ENZYME TECHNOLOGIES LIMITED (b) NATIONALITY: an Indian Company ...
18-05-2012· Search for Removing Natural Color By Chemical Reaction, E.g., Bleaching, Etc. Patents and Patent Applications (Class 426/253) Filed with the USPTO
22-12-1999· European Patent Office EPO. Search worldwide, life-sciences literature Search. Advanced Search. E.g. "breast cancer" HER2 Smith J. Recent Activity Export List Clipboard Export Liquid crystalline peroxide compositions and methods for coloring and/or bleaching hair (PAT - US6238653) NARASIMHAN SAROJA, CHAN ALEXANDER C, DUFFER DALAL ...
05-06-1995· A sewage purification method which includes a first step in which at least two kinds of flocculants are introduced in sewage for stirring and mixing therewith so as to float and settle inorganic and organic materials. The first step is sequentially repeated more than one time. Next, at least three kinds of flocculants are introduced into the supernatant obtained in the first step for stirring ...
A bleaching agent which is capable of lightening hair to a predetermined degree, and a non-oxidation type colorant which is capable of imparting a permanent color is applied to hair for a sufficient length of time and in a sufficient amount to achieve the desired result. The bleaching agent and colorant are then rinsed from the hair.
USA - Method for bleaching color ... - Google Patents. Standard Methods for the Examination of Water and Wastewater, 19th ed., USA. Azbar, N., Yonar, T., and Kestioglu, K. (2004). "Comparison of various advanced oxidation processes and chemical treatment methods for COD and color removal from a polyester and …
An improved method for bleaching color photosensitive materials with a persulfate is provided. This method is free of offensive odors, can bleach efficiently color photosensitive materials containing a large amount of silver by using a persulfate, and can effectively bleach color photosensitive materials having colloidal silver layers by using a persulfate.
The disadvantage of this method is that to achieve a high degree of purification of high colored wastewater (up to 94-98%) required a fairly large total flow rate (dose) ozone (18-33 mg/l). We found that when applying this known method [3] for cleaning painted wastewater dyeing and finishing production of the observed treatment effect, particularly bleaching, much lower.
20-11-2020· A method for processing a silver halide color photographic material is described which comprises subjecting an imagewise exposed silver halide color photographic material to color development and then bleaching the developed color photographic material with a bleaching solution containing a ferric salt of an aminopolycarboxylic acid, wherein the bleaching solution additionally …
The method of this invention provides rapid and efficient bleaching of imagewise exposed and developed color photographic films, especially motion picture print films, containing silver halide emulsions containing at least 20 mol % silver bromide, and from 0 to about 0.5 mol % silver iodide, and avoids the problems noted above with known peroxide bleaching solutions.
Wastewater Technology Fact Sheet Disinfection for Small Systems DESCRIPTION The impact of untreated and partially treated domestic wastewater on rivers and community water sources continues to raise health and safety concerns. The organisms of concern in domestic wastewater include enteric bacteria, viruses, and protozoan cysts. Table 1 ...
Optimization of Integrated Electro-Bio Process for Bleaching Effluent Treatment. Bala subramanian. Related Papers. Electrochemical Treatment of organic and oily wastewaters. By Ankit Patel [2009] Augmentation of biodegradability of pulp and paper industry wastewater by.
non-acceptable level, the wastewater may then be discharged 668 D.-R. Ji et al. / Journal of the Taiwan Institute of Chemical Engineers 40 (2009) 663–668 to wastewater treatment plant or, if further treatment is Ito, M. M., K. Akita, and H. Inoue, ''Wet Oxidation of Oxygen-Containing and Nitrogen- Containing Organic-Compounds Catalyzed by Cobalt(III) Oxide,'' Ind. Eng. Chem. required ...
are able to bleach indigo-dyed denim fabrics and to degrade dyes in wastewater in order to ac hieve the e ffl uent color removal. The aim of this paper is to review the electrochemical techniques ...
01-01-2021· Color removal using chemical method. The color from textile wastewater can be removed by various methods. Chemical method is one among them. In this method, various oxidizing agents like sodium hypochlorite, chlorine gas, hydrogen peroxide, ozonization, and other oxidizing methods are involved. This is the cheapest method of color removal.
08-03-2005· Oil analysis: The colour number in oils (Lovibond method) was determined to AOCS Cc 13b-45. Chlorophyll A was determined to AOCS Cc 13d-55. Water content: The water content of the products was determined at 105° C. using the method DIN/ISO-787/2 …
14-02-2019· A method for processing silver halide color photographic light-sensitive materials is disclosed. The process comprises regeneration of a bleaching-capable processing solution by addition of a regenerant, and use of a bleaching agent, which is a ferric complex salt of a compound of the following formula in the processing solution that has bleaching capability; ##STR1##
A method for cleaning effluents from bleaching plants which use ultrafiltration for cleaning, preferably after the first extraction stage, by dividing the ultrafiltration into two stages, and between them inserting an alkali treatment stage. The high molecular chlorine compounds are thereby split into innocuous sodium chloride in the permeate from the second ultrafiltration stage, which can be ...
The Patent Act, 1970 Complete Specification (See Section 10; Rule 13) Title A method of bleaching fatty acids Applicant Godrej Soaps Ltd., Eastern Express Highway, Vikhroli, Mumbai 400 079 Maharashtra, India. An Indian Company The following specification particularly describes the nature of this invention and the manner in which it is to be ...
12-06-2017· WASTEWATER COLOR REMOVAL. Several methods are used for the removal of organic dyes from wastewaters. ... "Treating agent for bleach processing," Japanese Patent: Application number "JP1988000226387", 1990 ... Removal of Dissolved Organic and color from dying Wastewater by Pre-Ozonation and Subsequent Biological Treatment ...
Textile Dyeing Wastewater Treatment Zongping Wang, Miaomiao Xue, ... and dyeing units is often rich in color, containing residues of reactive dyes and chemicals, ... Bleaching Dyeing, Finishing Mercerizing Yarn formation Yarn formation Fig. 1.
Blackwell et al, "Recycle of Bleach Plant Extraction Stage Effluent to the Kraft Liquor Cycle: A Theoretical Analysis", Int. Chemical Recovery Conf. (1992), Tappi, pp 329-350, discloses a process for recycling bleach plant extraction stage filtrate without pre-treatment for reduction of AOX, BOD, color, toxicity etc.
28-09-1992· A method of treating wastewater in pulp bleaching efficiently by decomposing and removing difficultly decomposable colored components and/or chlorinated phenols contained in the wastewater, which method comprises the use of a lignin-decomposing microorganism cultured in a medium containing the wastewater and/or a lignin-related substance, a product of culture of the …
30-03-2011· Disclosed are methods and compositions of lightening the color of hair that has been recently contacted with a relaxing or straightening composition, the method comprising combining a bleach composition comprising at least one oxidizing agent selected from the group consisting of persulfates, perborates, percarbonates, their salts and mixtures thereof, and at least one rheology …
The invention discloses a method for bleaching natural color pulp. The method adopts the bleaching flows of oxygen delignification (O), alkali extraction (E), ozone bleaching (Z) and hydrogen peroxide bleaching (P), wherein the oxygen delignification can be divided into single section or two sections; the alkali extraction process can adopt the reinforcing treatment of hydrogen peroxide or ...
A method of desilvering an imagewise and developed color silver halide element, said method comprising bleaching the photographic element with a peracid bleach and subsequently contacting the photographic element with a fixer solution comprising thiosulfate anion and sodium cation;wherein the Molar-minute fixing Time is less than about 0.2 Molar-minutes.times.m.sup.2 /g Ag.times.the grams of ...
