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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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waste disposal problems
Separation of Phosphate from Wastewater Using an Ion ...
Separation of Phosphate from Wastewater Using an Ion ...

The second step was a ,copper, or nickel loading pro-cess for the CBs or CB–G with CuCl2·2H2O or NiCl2·6H2O. To immobilize the ,copper, or nickel, 6 g of each chemical was dissolved in 400 mL of DI and the pH was controlled to ~4.5 and ~5.0, respectively. The …

REMOVAL OF COPPER IONS FROM INDUSTRIAL WASTEWATER …
REMOVAL OF COPPER IONS FROM INDUSTRIAL WASTEWATER …

Copper, sulfate hexahydrate (CuSO4.6H2O), (M.wt= 249.68) g/mol (REACTIVUL ® Company, Bucharest, Romania) used to prepare a solution of the simulated ,wastewater, contains (100) mg/L of Cu(II) ions.

Application of Biosorption for Removal of Heavy Metals ...
Application of Biosorption for Removal of Heavy Metals ...

4/12/2017, · The regeneration by sulfuric ,acid, and subsequent neutralization is done by Na 2 CO 3. The beads were stable to physical and environmental deterioration and displayed over 95% removal over 250 cycles of regeneration. The source of ,wastewater, and the presence of organic matter below 50 mg/L did not inhibit metal removal.

Removal of Copper Ions from Acid Mine Drainage Wastewater ...
Removal of Copper Ions from Acid Mine Drainage Wastewater ...

Substituting the regression coefficients in ,equation, (2) we get model ,equation, relating the level of parameters and metal removal. η = 29.81 + 20.55X1 – 5.24X2 – 3.35X3 – 0.42X4 + 0.47X1X2 – 3.14X1X3 + 1.83X1X4 – 0.83X2X3 + 1.56X2X4 – 1.04X3X4 + 3.53X1X2X3 – 1.89X1X2X4 + 4.15X1X3X4 – 2.15X2X3X4 (3) 3.1. Student’s t-test

Removal of copper ions from wastewater by adsorption ...
Removal of copper ions from wastewater by adsorption ...

Huang and Su investigated the removal ,of copper, ions from ,wastewater, by using activated carbon fiber (ACF) cloth electrodes that were modified with nitric ,acid, or impregnated with chitosan solution.

Nitrification (Ammonia Oxidation) In Wastewater Treatment ...
Nitrification (Ammonia Oxidation) In Wastewater Treatment ...

equation,. The net effect is that it takes 4.5 mg of oxygen to fully oxidize one mg of ammonia-N. Therefore even small concentrations of ammonia can cause significant deterioration to the flora and fauna in the body of water receiving it. Thus, many domestic and industrial ,wastewater, treatment plants are required to

REMOVAL OF COPPER IONS FROM INDUSTRIAL WASTEWATER …
REMOVAL OF COPPER IONS FROM INDUSTRIAL WASTEWATER …

Copper, sulfate hexahydrate (CuSO4.6H2O), (M.wt= 249.68) g/mol (REACTIVUL ® Company, Bucharest, Romania) used to prepare a solution of the simulated ,wastewater, contains (100) mg/L of Cu(II) ions.

The impact of tertiary wastewater treatment on copper and ...
The impact of tertiary wastewater treatment on copper and ...

addition of reagent grade 3-(N-morpholino)propanesulphonic ,acid, (MOPS) to a final concentration of 0.05 M and adjusted to pH 7.0 (±0.05) using 1 M hydrochloric ,acid, (HCl). At least 10 aliquots of 200 mL filtered sample were spiked with a metal standard, prepared as 50mg/L solutions in dilute Optima grade nitric ,acid, (1%) (Fisher, UK),

Acid mine drainage - Wikipedia
Acid mine drainage - Wikipedia

A general equation for this process is: 2 FeS 2 ( s ) + 7 O 2 ( g ) + 2 H 2 O ( l ) 2 Fe 2 + ( aq ) + 4 SO 4 2 − ( aq ) + 4 H + ( aq ) {\displaystyle {\ce {2FeS2{\scriptstyle (s)}+7O2{\scriptstyle (g)}+2H2O{\scriptstyle (l)}->2Fe^{2+}{\scriptstyle (aq)}+4SO4^{2-}{\scriptstyle (aq)}+4H+{\scriptstyle (aq)}}}} .

Kinetics of Catalytic Wet Peroxide Oxidation of Phenolics ...
Kinetics of Catalytic Wet Peroxide Oxidation of Phenolics ...

Various methods exist to introduce Cu in zeolites, cation exchange being commonly used. The location of Cu in the zeolite structure has been researched for many years and an overview is presented here for the common zeolite topologies. Besides simple Cu-,ion, exchange, also ligated ,copper, complexes are included in the pores and cages of zeolites.

ION EXCHANGE PROCESSES ON WEAK ACID RESINS FOR WASTEWATER …
ION EXCHANGE PROCESSES ON WEAK ACID RESINS FOR WASTEWATER …

reversible and thus has good potential for the removal/recovery ,of copper, from aqueous solutions. After the experiments we concluded that such ,ion, exchange resins can be used for the efficient removal ,of copper, from water and ,wastewater,. Key words: ,copper,, ,ion, exchange, Purolite MN 500, Purolite C 100 H, sorption capacity

Treatment of Copper-Contained Jewellery Wastewater by ...
Treatment of Copper-Contained Jewellery Wastewater by ...

Wastewater, Characteristics The ,wastewater, samples used in the experi-ments included the jewellery industry ,wastewater, from Surabaya, Indonesia. The ,wastewater, char-acteristics can be seen in Table 1. The large con-centration of Cu is caused by the use of ,acid, solu - tions in the process of producing gold jewellery. Adsorbent Profile of Rice Husk

Removal of copper ions from wastewater by adsorption onto ...
Removal of copper ions from wastewater by adsorption onto ...

The best fit to a linear correlation was the moving boundary ,equation,, which controls the kinetics of the adsorption ,of copper, ions onto the activated carbon. X-ray photoelectron spectroscopy revealed the existence of different ,copper, species (Cu2+, and Cu+ and/or Cu0) on the surface of the carbonaceous adsorbent after the adsorption, which could suggest a simultaneous reduction process.

Synthesis and Characterization of an Ion-Imprinted Polymer ...
Synthesis and Characterization of an Ion-Imprinted Polymer ...

procedure before determining their toxicity. ,Copper,, considered to be an essential micronutrient for humans, is one of the pollutants present in waters. According to the Environmental Pollution Agency, the acceptable concentration action level for ,copper, in public water supplies is 1.3 ppm. High concentrations ,of copper, in the human body can cause

Removal of copper ions from wastewater by adsorption onto ...
Removal of copper ions from wastewater by adsorption onto ...

The best fit to a linear correlation was the moving boundary ,equation,, which controls the kinetics of the adsorption ,of copper, ions onto the activated carbon. X-ray photoelectron spectroscopy revealed the existence of different ,copper, species (Cu2+, and Cu+ and/or Cu0) on the surface of the carbonaceous adsorbent after the adsorption, which could suggest a simultaneous reduction process.

Treatment of Copper-Contained Jewellery Wastewater by ...
Treatment of Copper-Contained Jewellery Wastewater by ...

Wastewater, Characteristics The ,wastewater, samples used in the experi-ments included the jewellery industry ,wastewater, from Surabaya, Indonesia. The ,wastewater, char-acteristics can be seen in Table 1. The large con-centration of Cu is caused by the use of ,acid, solu - tions in the process of producing gold jewellery. Adsorbent Profile of Rice Husk

2. INVESTIGATING THE COPPER CONTENT OF BRASS
2. INVESTIGATING THE COPPER CONTENT OF BRASS

where y = absorbance, x = concentration and b = y-intercept. The ,copper ion, concentration of the brass sample is then determined using this plot.

The impact of tertiary wastewater treatment on copper and ...
The impact of tertiary wastewater treatment on copper and ...

addition of reagent grade 3-(N-morpholino)propanesulphonic ,acid, (MOPS) to a final concentration of 0.05 M and adjusted to pH 7.0 (±0.05) using 1 M hydrochloric ,acid, (HCl). At least 10 aliquots of 200 mL filtered sample were spiked with a metal standard, prepared as 50mg/L solutions in dilute Optima grade nitric ,acid, (1%) (Fisher, UK),

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