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The effluent from the factory is acidic

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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The effluent from the factory is acidic
Biodegradation of Azo Dye compounds - SlideShare
Biodegradation of Azo Dye compounds - SlideShare

Color Black Structure Moleculer Formula C34H25K2N11O11S3 Moleculer Weight 938.02 Melting Point 3000 C ,PH, 8.5 to 9.5 IUPAC Name Disodium6-hyroxy-5[(4-sulfophenyl),azo,]-2- naphthalenesulfonate Use Use for dyeing of nylon & silk, cloth, paper, leather etc. Types of ,Dye Azo dye, (N=N) structures is a secondary metabolic event that starts when nutrients (C, N and S) become limiting.

Dye - Wikipedia
Dye - Wikipedia

Usually acetic ,acid, is added to the ,dye, bath to help the uptake of the ,dye, onto the fiber. Basic dyes are also used in the coloration of paper . Direct or substantive dyeing is normally carried out in a neutral or slightly alkaline ,dye, bath, at or near boiling point , with the addition of either sodium chloride (NaCl) or sodium sulfate (Na 2 SO 4 ) or sodium carbonate (Na 2 CO 3 ).

Effective Treatment Systems for Azo Dye Degradation: A ...
Effective Treatment Systems for Azo Dye Degradation: A ...

For example, 0.6–0.8 kg NaCl, 30–60 g dyestuff and 70–150 L water are necessary to ,dye, 1 kg of cotton with reactive dyes; the ,wastewater, produced has 20–30% of the applied unfixed reactive dyes, with an average concentration of 2000 ppm, high salt content and dyeing auxiliaries [13].

Nanomaterials | Free Full-Text | Carbonized Lanthanum ...
Nanomaterials | Free Full-Text | Carbonized Lanthanum ...

Azo, dyes (e.g., ,acid, red 18) are one of the synthetic dyes that are used in many industries. The treatment and disposal of ,dye,-contaminated ,wastewater, are one of the most serious environmental problems. Intermediate products of ,azo, dyes are toxic, mutagenic and carcinogenic to humans and aquatic life.

Treatment of azo dye (Acid Orange ii) wastewater by pulsed ...
Treatment of azo dye (Acid Orange ii) wastewater by pulsed ...

Pulsed high-voltage electrical discharge was used in treating ,azo dye, (,Acid, Orange ii, AO7) ,wastewater,. The effects of initial ,pH,, Fe²⁺ concentration, discharge mode, conductivity of initial aqueous solution and the type of bubbling gas (air, O₂, N₂) on AO7 degradation were studied.

Performance of amphoteric larch tannin derivative ...
Performance of amphoteric larch tannin derivative ...

The removal of ,azo acid, dyes on CTD and CTB was ,pH,-dependent, and the maximum removal of ≥90.7% was reached for ,Acid, Black 10 B and 52.6% for ,Acid, Red 14 in aqueous solution at ,pH, 5.0. The effect of particle dosages on the removal of ,Acid, Black 10 B and ,Acid, …

Biodegradation of Azo Dye compounds - SlideShare
Biodegradation of Azo Dye compounds - SlideShare

Color Black Structure Moleculer Formula C34H25K2N11O11S3 Moleculer Weight 938.02 Melting Point 3000 C ,PH, 8.5 to 9.5 IUPAC Name Disodium6-hyroxy-5[(4-sulfophenyl),azo,]-2- naphthalenesulfonate Use Use for dyeing of nylon & silk, cloth, paper, leather etc. Types of ,Dye Azo dye, (N=N) structures is a secondary metabolic event that starts when nutrients (C, N and S) become limiting.

A review on the sustainability of textile industries ...
A review on the sustainability of textile industries ...

The ,wastewater, contains not only the colored ,dye, but also other metallic particles, high fluctuating ,pH,, suspended solids with high chemical oxygen demand (COD), etc. , . Therefore, today, the textile ,wastewater, from the textile and dyeing industries causes major concern with regard to the treatment of textile ,wastewater,.

Dye - Wikipedia
Dye - Wikipedia

Usually acetic ,acid, is added to the ,dye, bath to help the uptake of the ,dye, onto the fiber. Basic dyes are also used in the coloration of paper . Direct or substantive dyeing is normally carried out in a neutral or slightly alkaline ,dye, bath, at or near boiling point , with the addition of either sodium chloride (NaCl) or sodium sulfate (Na 2 SO 4 ) or sodium carbonate (Na 2 CO 3 ).

Brief History of Dyes - Assignment Point
Brief History of Dyes - Assignment Point

As the rate of degradation is pH dependent, and the optimum pHrange is 3-5, so the pH of the dye solution was kept » 3 throughout the investigation. Higher (%) degradation is obtained as time goes on but after a certain period the change is very negligible.

Brief History of Dyes - Assignment Point
Brief History of Dyes - Assignment Point

As the rate of degradation is pH dependent, and the optimum pHrange is 3-5, so the pH of the dye solution was kept » 3 throughout the investigation. Higher (%) degradation is obtained as time goes on but after a certain period the change is very negligible.

Textiles wastewater treatment technology: A review - Deng ...
Textiles wastewater treatment technology: A review - Deng ...

The results obtained demonstrated that SYF‐1 yeast was able to decolorize all the six different ,azo, dyes, and among them, ,Acid, Red B (ARB) ,dye, was removed at highest efficiency. The optimum decolorization efficiency of ARB ,dye, was achieved at 0.6 g/L of ammonium sulfate, glucose concentration of 4.0 g/L, NaCl concentration of ≤30 g/L, ,pH, of 7.0–8.0, temperature at 30°C, and a rotation ...

A review on the sustainability of textile industries ...
A review on the sustainability of textile industries ...

The ,wastewater, contains not only the colored ,dye, but also other metallic particles, high fluctuating ,pH,, suspended solids with high chemical oxygen demand (COD), etc. , . Therefore, today, the textile ,wastewater, from the textile and dyeing industries causes major concern with regard to the treatment of textile ,wastewater,.

Toxicity and Fate of Azo Dyes Danish Environmental ...
Toxicity and Fate of Azo Dyes Danish Environmental ...

Shu et al. (1994) demonstrated photo-oxidation (UV/H 2 O 2--photo chemical reactor) of two ,non,-biodegradable ,azo, dyes in ,waste water, (,Acid, Red 1* and ,Acid, Yellow 23*). It was observed that the decomposition of both ,azo, dyes was pseudo-first order reactions with respect to ,azo dye, concentrations.

Performance of amphoteric larch tannin derivative ...
Performance of amphoteric larch tannin derivative ...

The removal of ,azo acid, dyes on CTD and CTB was ,pH,-dependent, and the maximum removal of ≥90.7% was reached for ,Acid, Black 10 B and 52.6% for ,Acid, Red 14 in aqueous solution at ,pH, 5.0. The effect of particle dosages on the removal of ,Acid, Black 10 B and ,Acid, …

Nanomaterials | Free Full-Text | Carbonized Lanthanum ...
Nanomaterials | Free Full-Text | Carbonized Lanthanum ...

Azo, dyes (e.g., ,acid, red 18) are one of the synthetic dyes that are used in many industries. The treatment and disposal of ,dye,-contaminated ,wastewater, are one of the most serious environmental problems. Intermediate products of ,azo, dyes are toxic, mutagenic and carcinogenic to humans and aquatic life.

Textiles wastewater treatment technology: A review - Deng ...
Textiles wastewater treatment technology: A review - Deng ...

The results obtained demonstrated that SYF‐1 yeast was able to decolorize all the six different ,azo, dyes, and among them, ,Acid, Red B (ARB) ,dye, was removed at highest efficiency. The optimum decolorization efficiency of ARB ,dye, was achieved at 0.6 g/L of ammonium sulfate, glucose concentration of 4.0 g/L, NaCl concentration of ≤30 g/L, ,pH, of 7.0–8.0, temperature at 30°C, and a rotation ...

A Review Biotechnological removal of color and dye from ...
A Review Biotechnological removal of color and dye from ...

Due to the highly variable nature of biological treatment systems and especially textile effluents, there are a number of factors that may affect the biodegradation rate of ,azo, dyes. ,Non,-,dye, related parameters such as temperature, ,pH,, dissolved oxygen or nitrate concentrations, type and source of reduction equivalents, bacteria consortium, and cell permeability can all affect the biodegradation of ,azo, dyes …

Toxicity and Fate of Azo Dyes Danish Environmental ...
Toxicity and Fate of Azo Dyes Danish Environmental ...

Shu et al. (1994) demonstrated photo-oxidation (UV/H 2 O 2--photo chemical reactor) of two ,non,-biodegradable ,azo, dyes in ,waste water, (,Acid, Red 1* and ,Acid, Yellow 23*). It was observed that the decomposition of both ,azo, dyes was pseudo-first order reactions with respect to ,azo dye, concentrations.

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