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Reuse of fracturing flowback fluid

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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Reuse of fracturing flowback fluid
(PDF) Adsorption of arsenic species from water using ...
(PDF) Adsorption of arsenic species from water using ...

Herein, the spent adsorbent was extracted with extraction fluid (5.7 mL of glacial CH3COOH added to 500 mL of Milli-Q ,water,, ,plus, 64.3 mL of 1 N NaOH and diluted to 1 L, pH 4.93), with a liquid/solid ratio of 20.

Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...
Oxalic Acid Recovery from High Iron Oxalate Waste Solution ...

The phase diagram of the ,water, + ,oxalic acid, + tri-Bu phosphate ternary system was obtained at 303.15 K. Expts. were also conducted on the equil. distribution of ,oxalic acid, between aq. solns. and tri-Bu phosphate (TBP) + hexane (H) mixed solvent (with a 60/40 TBP/H percent vol. ratio).

5.2 Chemical Weathering | Physical Geology
5.2 Chemical Weathering | Physical Geology

Here we have ,water, (e.g., as rain) ,plus, carbon dioxide in the atmosphere, combining to create carbonic ,acid,. Then carbonic ,acid, dissociates (comes apart) to form hydrogen and carbonate ions. The amount of CO 2 in the air is enough to make only very weak carbonic ,acid,, but there is typically much more CO 2 in the soil, so ,water, that percolates through the soil can become significantly more acidic.

WO2007079532A1 - Hematite precipitation - Google Patents
WO2007079532A1 - Hematite precipitation - Google Patents

A hydrometallurgical method for precipitating iron in the form of ,hematite, from leach solutions containing nickel, cobalt and iron, characterised by the steps of: i) pre-neutralising (12) the leach solution by the addition of a neutralising agent (14); ii) oxidising ferrous sulphate to ferric sulphate (16) by sparging air or oxygen into the solution resulting from step (i) at an elevated ...

Titanium Nanomaterial Removal and Release from Wastewater ...
Titanium Nanomaterial Removal and Release from Wastewater ...

Titanium (Ti) occurs naturally in soils and as highly purified titanium dioxide (TiO2) in many commercial products that have been used for decades. We report for the first time the occurrence, characterization, and removal of nano- and larger-sized Ti at wastewater treatment plants (WWTPs). At one WWTP studied in detail, raw sewage contained 100 to nearly 3000 μg Ti/L. Ti larger than 0.7 μm ...

(PDF) Adsorption of arsenic species from water using ...
(PDF) Adsorption of arsenic species from water using ...

Herein, the spent adsorbent was extracted with extraction fluid (5.7 mL of glacial CH3COOH added to 500 mL of Milli-Q ,water,, ,plus, 64.3 mL of 1 N NaOH and diluted to 1 L, pH 4.93), with a liquid/solid ratio of 20.

How to Dissolve Urea in Water - Barus Holding Group
How to Dissolve Urea in Water - Barus Holding Group

Ingestion of low concentrations of urea, such as are found in typical human urine, are not dangerous with additional ,water, ingestion within a reasonable time-frame. NH2CONH2 → NH4NCO → HNCO + NH3This response is at its worst when the urea answer is heated at low strain, which happens when the solution is concentrated for prilling or granulation (see under).

Journal of Water Process Engineering - NSF
Journal of Water Process Engineering - NSF

5/9/2017, · size and shape of nano-,hematite, particles on n-HBC could be seen from the SEM images. The size of nano-,hematite, particles was in the range of 50 and 100 nm. Fig. 1b shows XRD spectra of n-HBC. All major peaks could be clearly seen and identified as standard ,hematite, (α-Fe2O3) (00-033-0664), confirming the formation of ,hematite, (α-Fe2O3) during

Applied Catalysis B: Environmental
Applied Catalysis B: Environmental

The number of ,acid, sites was calculated as follows: (i) From the total weight (wtotal) of a sample with adsorbed pyridine (sample Py)analyzedbyTG/DTG,wesubtractedtheweightlostbetween25 and 250 C(w250, usually ,water, and/or physically adsorbed pyri-dine), …

Physico-chemical and elemental investigation of aqueous ...
Physico-chemical and elemental investigation of aqueous ...

Acid, mine drainage (AMD) is one of the major problems in high sulfur coal mining areas generating acidic ,water,. The acidic mine ,water, generated contain hazardous elements in varying concentrations. The Northeastern Indian coalfield produces considerable amounts of AMD. The AMD and metal leaching from coal and mine over burden (OB) are the two important naturally occurring processes.

Appendix A Australian Drinking Water Guidelines
Appendix A Australian Drinking Water Guidelines

chemical tests). A uranium cutoff of 200 mg/kg was used to distinguish between ,waste, rock and BOGUM with BOGUM samples defined as material with an uranium content between 200 and 1000 mg/kg. The majority of the ,waste, rock samples did not have associated uranium assay data. One tailings sample ,plus, a duplicate was also sent in for analysis.

WO2007079532A1 - Hematite precipitation - Google Patents
WO2007079532A1 - Hematite precipitation - Google Patents

A hydrometallurgical method for precipitating iron in the form of ,hematite, from leach solutions containing nickel, cobalt and iron, characterised by the steps of: i) pre-neutralising (12) the leach solution by the addition of a neutralising agent (14); ii) oxidising ferrous sulphate to ferric sulphate (16) by sparging air or oxygen into the solution resulting from step (i) at an elevated ...

5.2 Chemical Weathering | Physical Geology
5.2 Chemical Weathering | Physical Geology

Here we have ,water, (e.g., as rain) ,plus, carbon dioxide in the atmosphere, combining to create carbonic ,acid,. Then carbonic ,acid, dissociates (comes apart) to form hydrogen and carbonate ions. The amount of CO 2 in the air is enough to make only very weak carbonic ,acid,, but there is typically much more CO 2 in the soil, so ,water, that percolates through the soil can become significantly more acidic.

ARTICLE: Addressing the Challenge of Bauxite Residue ...
ARTICLE: Addressing the Challenge of Bauxite Residue ...

The recovered caustic soda is recycled at the alumina refinery and sulfuric ,acid, is recycled in the soda recovery leaching process. 13. One of the ,acid, neutralization options is to use highly acidic wastewater. For example, pickling ,waste, liquor is a mixture of strong acids used for descaling or cleaning surfaces in the steel making industry.

Notice of Intent Livingstone DSO Hematite Mine Project
Notice of Intent Livingstone DSO Hematite Mine Project

Resource DSO (,Hematite,) Mining method Open cut mining Mine operation Continuous day and night shifts Average depth of pit Singe open pit 150 m deep Depth to ,water, table Variable (from 0 to 50 m across the project site) Total area of disturbance Approximately 77.8 hectares (ha) Total mined ore tonnage 1.9 million tonnes (Mt)

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