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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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Removal of Heavy Metals Using Chemicals Precipitation
Removal of Heavy Metals Using Chemicals Precipitation

A. Different ,metal, solutions were prepared as 10.00, 7.50, 5.00, 2.50 g/l of tap water. Most of the experiments were done at 5.00 g/l solutions. B. Specific calculated amounts of ,metal, salts were dissolved each into (1- liter) of water to give 500 mg/l (500 ppm) of each ,ion metal, …

REMOVAL OF METALS FROM INDUSTRIAL WASTEWATER
REMOVAL OF METALS FROM INDUSTRIAL WASTEWATER

M 2+ represents ,metal ion, andOH – represents ,precipitant,[23]. 5.1.3 Adsorption It is another method used to remove heavy metals from ,wastewater,. It works on the principle of mass transfer between the liquid phase and solid phase called adsorbent.

Biosorption of Heavy Metals | IntechOpen
Biosorption of Heavy Metals | IntechOpen

24/4/2017, · Industrialization has led to introduction of heavy metals in the environment. Heavy metals are known to persist in the environment and become a risk for organisms. Micro-organisms are present in industrial effluents. They have adopted different strategies to cope up with the harmful effects of these metals. These strategies can be metabolism dependent or independent.

Removal of Heavy Metals Using Chemicals Precipitation
Removal of Heavy Metals Using Chemicals Precipitation

A. Different ,metal, solutions were prepared as 10.00, 7.50, 5.00, 2.50 g/l of tap water. Most of the experiments were done at 5.00 g/l solutions. B. Specific calculated amounts of ,metal, salts were dissolved each into (1- liter) of water to give 500 mg/l (500 ppm) of each ,ion metal, separately and then all …

(PDF) Removal of heavy metal ions from wastewaters: A ...
(PDF) Removal of heavy metal ions from wastewaters: A ...

As we know, heavy metal ions often in acid found that the optimum pH was more than 9.5 and the treated conditions and sulfide precipitants in acidic conditions can result in wastewater could meet the Wastewater Standard of the Ministry of the evolution of toxic H2S fumes.

Detailed interpretation of coagulation process - Knowledge ...
Detailed interpretation of coagulation process - Knowledge ...

1. pH value and heavy ,metal ion, content in water. The ,chemical, reaction formula of the above heavy ,metal, ions and OH- and the solubility product of the compound indicate whether the heavy ,metal, ions in the ,wastewater, can be removed to the utmost extent, depending on whether these ,metal, ions can form insoluble hydroxides and these Whether the ...

(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …
(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …

Common hydroxide precipitants include lime (Ca(OH)2), limestone, sodium hydroxide (NaOH),sodium bicarbonate (Na(HCO3)2), sodium sulfide (Na2S) and sodium hydrosulfide (NaHS),which can release hydroxide ,ion, bound metals to form insoluble hydroxide precipitates [14, 15, 16, 17].The selection of these chemicals should be able to meet the maximum contaminant level standards or to reach the desired final concentration required for recycling [18, 19, 20, 21].As legislation for ,metal, …

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

26/3/2018, · Strongly acidic ,wastewater, (H2SO4) with a high arsenic concentration is produced by many industries. The removal of arsenic by traditional sulfide (e.g., Na2S, FeS) from strongly acidic ,wastewater, introduces cations (Na+ and Fe2+) to the solution, which may prevent the recycle of ,acid,. In this study, a new sulfuration agent, phosphorus pentasulfide (P2S5) was employed, and its feasibility in ...

Removal of Arsenic from Strongly Acidic Wastewater Using ...
Removal of Arsenic from Strongly Acidic Wastewater Using ...

26/3/2018, · Strongly acidic ,wastewater, (H2SO4) with a high arsenic concentration is produced by many industries. The removal of arsenic by traditional sulfide (e.g., Na2S, FeS) from strongly acidic ,wastewater, introduces cations (Na+ and Fe2+) to the solution, which may prevent the recycle of ,acid,. In this study, a new sulfuration agent, phosphorus pentasulfide (P2S5) was employed, and its feasibility in ...

Detailed interpretation of coagulation process - Knowledge ...
Detailed interpretation of coagulation process - Knowledge ...

1. pH value and heavy ,metal ion, content in water. The ,chemical, reaction formula of the above heavy ,metal, ions and OH- and the solubility product of the compound indicate whether the heavy ,metal, ions in the ,wastewater, can be removed to the utmost extent, depending on whether these ,metal, ions can form insoluble hydroxides and these Whether the ...

(PDF) Removal of heavy metal ions from wastewaters: A ...
(PDF) Removal of heavy metal ions from wastewaters: A ...

As we know, heavy metal ions often in acid found that the optimum pH was more than 9.5 and the treated conditions and sulfide precipitants in acidic conditions can result in wastewater could meet the Wastewater Standard of the Ministry of the evolution of toxic H2S fumes.

Removal of Heavy Metals Using Chemicals Precipitation
Removal of Heavy Metals Using Chemicals Precipitation

A. Different ,metal, solutions were prepared as 10.00, 7.50, 5.00, 2.50 g/l of tap water. Most of the experiments were done at 5.00 g/l solutions. B. Specific calculated amounts of ,metal, salts were dissolved each into (1- liter) of water to give 500 mg/l (500 ppm) of each ,ion metal, separately and then all …

REMOVAL OF METALS FROM INDUSTRIAL WASTEWATER
REMOVAL OF METALS FROM INDUSTRIAL WASTEWATER

M 2+ represents ,metal ion, andOH – represents ,precipitant,[23]. 5.1.3 Adsorption It is another method used to remove heavy metals from ,wastewater,. It works on the principle of mass transfer between the liquid phase and solid phase called adsorbent.

Protein precipitation with acids and polyelectrolytes: the ...
Protein precipitation with acids and polyelectrolytes: the ...

2) adding the ,precipitant,, which binds to the protein, so that the precipitate is necessarily a mixture of the two. The ,precipitant, may be a small MW compound, a multivalent ,metal ion, (Ca^), an uncharged polymer, or a polyelectrolyte (flocculation); the binding may be due to …

Composition and method for simultaneously precipitating ...
Composition and method for simultaneously precipitating ...

Several polymer chemistries have been used to treat wastewater containing transition metal complexes, such as copper-ethylenediaminetetraacetic acid (EDTA), resulting in the precipitation of …

Protein precipitation with acids and polyelectrolytes: the ...
Protein precipitation with acids and polyelectrolytes: the ...

2) adding the ,precipitant,, which binds to the protein, so that the precipitate is necessarily a mixture of the two. The ,precipitant, may be a small MW compound, a multivalent ,metal ion, (Ca^), an uncharged polymer, or a polyelectrolyte (flocculation); the binding may be due to …

Heavy metal sequestration from contaminated water: A review
Heavy metal sequestration from contaminated water: A review

of ,metal, ions because of destruction of its matrix. Moreover, ,ion, exchange is nonspecific and is its efficiency is pH sensitive. Table 2: Heavy ,metal, sequestering by ,chemical, precipitation method Heavy ,Metal Precipitant, Optimum dose of ,Precipitant, (g/L) Optimum pH Removal Efficiency (%) References Zn2+ Cu2+ Ni2+ Pb2+ Cr3+/Cr4+ Cd2+ Ca(OH) 2, Na

(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …
(PDF) INDUSTRIAL REJECTION: REMOVAL OF HEAVY METALS …

Common hydroxide precipitants include lime (Ca(OH)2), limestone, sodium hydroxide (NaOH),sodium bicarbonate (Na(HCO3)2), sodium sulfide (Na2S) and sodium hydrosulfide (NaHS),which can release hydroxide ,ion, bound metals to form insoluble hydroxide precipitates [14, 15, 16, 17].The selection of these chemicals should be able to meet the maximum contaminant level standards or to reach the desired final concentration required for recycling [18, 19, 20, 21].As legislation for ,metal, …

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