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Detoxification And Bioremediation Of Chromium (V I) …

concentration was then calculated from the difference between the initial total Cr (III) and the present value. 2.6 Treating chrome tanning effluent by precipitating agents: 2.6.1 Using sodium hydroxide: 15% sodium hydroxide was added to 100ml of tannery effluent and the pH was maintained at …

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Chloride, Salinity, and Dissolved Solids

The dissolved solids concentration in water is the sum of all the substances, organic and inorganic, dissolved in water. This also is referred to as "total dissolved solids", or TDS. Calcium, magnesium, sodium, potassium, bicarbonate, sulfate, chloride, nitrate, and silica typically make up most of the dissolved solids in water.

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Coagulation/Flocculation of Tannery Wastewater Using ...

tannery wastewater by using immobilized chemical coagulants, • To investigate the different parameters such as pH, EC, TDS, chlorides, sulfates and alkalinity, • To determine chromium concentration in tannery wastewater before & after treatment using immobilized chemical coagulants. 2. Materials and methods 2.1 Chemical Coagulants

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Effect of Alkali and Acid Concentration in Extraction of ...

90 Putshaka J. D. et al.: Effect of Alkali and Acid Concentration in Extraction of Chromium III from Tannery Solid Waste substantial part of the chromium salt used in tanning process is also lost and carried away with solid waste such as shavings

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Removal and Recovery of Chromium from Solutions Simulating ...

Feb 21, 2013· The process in this study was conducted on removal of chromium(III) in a solution simulating a typical spent chrome tanning bath by the resin having matrix of styrene-divinylbenzene-based macroporous sulphonate, Amberjet 1200Na. The column experiments were carried out with the bed volumes of the resin as 751 mL and 1016 mL for different installation systems of the laboratory …

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Frequently Asked Questions (FAQs) about Sodium ...

The chemistry behind this is: the pH scale is from 0 to 14. Acids have a pH below 7, bases are above 7, and 7 is neutral. Most natural water is around pH 6-7. When sodium hypochlorite is in water, it is a mixture of two compounds, with the concentration of each compound dependent on pH.

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Removal and Recovery of Sulfide From Tannery Wastewater

The sodium hydroxide reacts with the hydrogen sulfide to form a solution of sodium sulfide in the sodium hydroxide which can be reused in the tannery processes. The objectives of this demonstration grant was to determine the operating characteristics and economics of the wastewater treatment system and the sulfide removal-recovery system.

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PRODUCTION OF BIOGAS FROM THE ANAEROBIC CO-DIGESTION …

This work thus recommends soaking liquor as diluent in the anaerobic digestion of tannery fleshing, use of tannery fleshing and cow-dung in the ratio of 1:2 for anaerobic co-digestion and the use of sodium and calcium alginates (0.01% wt/v) acting as chelating ligands to remove hydrogen sulphide and boost methane production above 20%.

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Study on the Treatment of Formaldehyde Wastewater by ...

Mar 07, 2010· The tannery wastewater containing formaldehyde which the initial concentration of formaldehyde was 120 mg /L was reacted with sodium bisulfite. The concentration of remaining formaldehyde was reduced to 0.446 mg/L 30 minutes later, which fully satisfied the national emission standard. The process was practicable.

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(PDF) Assessment of tannery based solid wastes management ...

The broad objective of study was to assess the effectiveness of tannery based solid wastes management, by identifying and analyzing the concentration levels of sodium …

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Effective Chromium Adsorption From Aqueous Solutions and ...

Jun 27, 2021· The tannery wastewater samples were collected and tested to detect the initial chromium concentration, and the results were 8.2 and 2.73 for raw and secondary treated wastewater, respectively. Other wastewater contaminants were tested to make a comparison between them before, after different treatment processes and the allowable limits.

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UNASYN (ampicillin sodium/sulbactam sodium)

Sulbactam sodium is a derivative of the basic penicillin nucleus. Chemically, sulbactam sodium is sodium penicillinate sulfone; sodium (2S, 5R)-3,3-dimethyl-7-oxo-4-thia- 1-azabicyclo [3.2.0] heptane-2-carboxylate 4,4-dioxide. Its chemical formula is C 8 H 10 NNaO 5 S with a molecular weight of 255.22. The structural formula is: COONa N S CH 3 ...

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Sodium hypochlorite as a disinfectant - Lenntech

If it is more concentrated, it contains a concentration 10-15% sodium hypochlorite (with a pH of around 13, it burns and is corrosive). Sodium hypochlorite is unstable. Chlorine evaporates at a rate of 0,75 gram active chlorine per day from the solution. Then heated sodium hypochlorite disintegrates.

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PRODUCTION OF BIOGAS FROM THE ANAEROBIC CO-DIGESTION …

PRODUCTION OF BIOGAS FROM THE ANAEROBIC CO-DIGESTION OF TANNERY FLESHING AND COW-DUNG ENHANCED BY SODIUM AND CALCIUM ALGINATES ABSTRACT The subjects of interest in this work were the production of biogas via anaerobic co digestion of tannery fleshing and cow dung; and the reduction of sulphide concentration by direct inclusion of sodium and calcium …

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Treatment of Real Tannery Wastewater by Nanocavitation ...

min using HC in combination with sodium persulfate (535.72 mg/L) oxidant. Although many studies report on the degradation of synthetically prepared tannery wastewater using HC coupled with various oxidative additives mostly at low concentration ranges (i.e. 50 -100ppm), however smaller

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Concentration of sodium sulfate from pickle liquor of ...

Nov 01, 1995· An electrodialysis technique using indigeneously prepared interpolymer membranes and a laboratory-scale electrodialysis unit having an effective area of 25 cm x 12 cm with 20 pairs of ion-exchange membranes was used for the concentration of sodium sulfate in the effluent was concentrated three and ...

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Safety Data Sheet Material Name: Sodium Hydrosulfide ...

Material Name: Sodium Hydrosulfide, Monohydrate ID: C1-209 _____ Issue Date: 10/16/02 14:05:39 HDF Revision Date 09/27/18 MMK Hazard Statements CORROSIVE. CAUSES SKIN, EYE AND RESPIRATORY TRACT BURNS. HARMFUL IF SWALLOWED OR INHALED AND IN CONTACT WITH SKIN AND EYES. Low concentration exposure can cause irritation of eyes, skin and respiratory

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Hyponatremia - StatPearls - NCBI Bookshelf

Jan 25, 2021· Hyponatremia is defined as a serum sodium concentration of less than 135 mEq/L but can vary to some extent depending upon the set values of varied laboratories.[1] Hyponatremia is a common electrolyte abnormality caused by an excess of total body water in comparison to that of the total body sodium content. Edelman approved of the fact that serum sodium concentration does not …

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Reducing sulfates concentration in the tannery effluent by ...

Jan 01, 2011· The aim of this work was reducing the sulfate concentration in the final wastewater from a tannery. For that, firstly a study about the main sulfate sources in a tannery was carried out and the total sulfates load in the tannery wastewater was evaluated.

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Water quality analysis of mixtures obtained from tannery ...

The process of bovine leather was performed using calcium carbonate and sodium sulfide, and the tanning process was performed using alkaline chromium sulfate. The analyses of waste solutions and sediments formed during the mixing process include pH values, the concentration of sulfides, the concentration of chromium(III) oxide, and ...

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Sodium - PubMed Central (PMC)

Jan 06, 2014· Sodium is the major cation of extracellular fluid [ECF 2 (1 mmol, or molar equivalent, corresponding to 23 mg of sodium)]. The mean body content of sodium in the adult male is 92 g, half of which (46 g) is located in the ECF at a concentration of 135–145 mmol/L, ∼11 g is found in the intracellular fluid at the concentration of ∼10 mmol/L, and ∼35 g is found in the skeleton.

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1. Introduction

During partitioning studies, recovery of tannery waste water proteins in PEG 10000 + Sodium citrate ATPS was found superior to other systems. It was possible to recover 95.86% of proteins from tannery waste water in the bottom phase with PEG 10000 30% (w/w) + Sodium citrate 13% (w/w) at 30°C.

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Density of aqueous solutions of inorganic sodium salts

Changes in density of aqueous solutions with changes in concentration at 20°C. Density of inorganic sodium salts in water is plotted as function of wt%, mol/kg water and mol/l solution. Be aware of the concentration units in the figures: wt%: Mass of solute/total mass of solution*. mol/kg: Molality = moles of solute/kg of water.

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Concentration of Sodium Sulfate from Pickle Liquor of ...

Sep 23, 2006· The parameters voltage, flow rate, and change of concentration with fresh effluent were investigated. The energy requirement and current efficiency were also calculated. Concentration of Sodium Sulfate from Pickle Liquor of Tannery Effluent by Electrodialysis: Separation Science and Technology: Vol 30, No 19

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Right to Know Hazardous Substance Fact Sheet

concentration does not exist. Where possible, transfer Sulfuric Acid from drums or other containers to process containers in an enclosed system. Personal Protective Equipment The OSHA Personal Protective Equipment Standard (29 CFR 1910.132) requires employers to determine the appropriate personal protective equipment for each hazard and to train

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Sodium Sulfide and Sodium Sulfhydrate used in tannery and ...

Aug 22, 2018· Both industries of tannery and mining use the sodium sulfide and the sodium sulfhydrate for the dehairing of skins in the first case, and the flotation of minerals (copper, molybdenum, cobalt, zinc, nickel…) in the second one. Their applications …

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Impact of Industrial Effluents on Soil Health and ...

salts, BOD, COD and sodium. However, Gupta and Sujatha12 reported much higher concentrations of total nitrogen (216 mg L-1) in effluents collected from small tannery industries of Madras. Similarly, several workersl.13 • 14 • 15 have also reported high concentration of total dissolved salts, BOD, COD, chromium etc. in the tannery effluents.

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Tanning (leather) - Wikipedia

Tanning is the process of treating skins and hides of animals to produce leather.A tannery is the place where the skins are processed.. Tanning hide into leather involves a process which permanently alters the protein structure of skin, making it more durable and less susceptible to decomposition, and also possibly coloring it.. Before tanning, the skins are dehaired, degreased, desalted and ...

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An integrated approach for tannery effluent treatment with ...

For the exploration of an effective and economical method to treat composite raw tannery effluent, the integrated approach of Ozonation and phycoremediation was followed. In a lab-scale Ozone reactor, the highest performance index was attained, when it was operated at a low O3 flowrate (2 g/h) condition. The tannery effluent partially treated by Ozonation (≈60% COD removed in 90 min) with ...

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Assessment of groundwater pollution due to tannery ...

Jun 10, 2005· 10%· In the investigation areas, sodium varies from 26 mg/l to 4,850 mg/l. High sodium concentration in irrigated areas could be due to the repeated use of water. The iso-concentration map of sodium is shown in Fig. 4. One can notice that the groundwater in Dindigul town and its surrounding area has a high concentration of sodium (>200 mg/l).

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Assessment of groundwater pollution due to tannery ...

Jun 10, 2005· In the investigation areas, sodium varies from 26 mg/l to 4,850 mg/l. High sodium concentration in irrigated areas could be due to the repeated use of water. The iso-concentration map of sodium is shown in Fig. 4. One can notice that the groundwater in Dindigul town and its surrounding area has a high concentration of sodium (>200 mg/l).

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