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Oxidation of acidic electroplating wastewater by hydrogen peroxide

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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Oxidation of acidic electroplating wastewater by hydrogen peroxide
Sequential recovery of copper and nickel from wastewater ...
Sequential recovery of copper and nickel from wastewater ...

After a batch cycle of 88.7 h, copper reduction can be finished (1.40 mmol recovery) after 68.3 h with 143.78 J energy output, while nickel reduction can be finished (0.32 mmol recovery) after 20.4 h with 50.68 J energy input under a bias-potential of 0.5 V. Wastewater containing copper and nickel could be separated sequentially with a zero net energy input and excess energy was produced as well.

Simultaneous removal of calcium fluoride nickel and ...
Simultaneous removal of calcium fluoride nickel and ...

As a typical hazardous heavy metal, ,nickel, (Ni 2+) mainly comes from the ,wastewater, produced by electroplating, ,nickel,-based alloy smelting, steel, ,battery, manufacturing, and other industries (Ma et al., 2019). Excessive Ni 2+ could destroy the structure and function of microbial proteins and inhibit microbial metabolism and growth (Rahman, 2020).

Synergistic Recovery of Valuable Metals from Spent Nickel ...
Synergistic Recovery of Valuable Metals from Spent Nickel ...

Spent ,nickel,-metal hydride batteries contain 36-42% ,nickel,, 3-4% cobalt, and 8-10% mischmetal consisting of lanthanum, cerium, praseodymium and neodymium. The dismantled and processed ,nickel,-metal hydride batteries are melted in a d.c. elec. arc furnace producing a ,nickel,-cobalt alloy and a slag phase highly enriched with rare earth oxides.

Sulfuric acid - Wikipedia
Sulfuric acid - Wikipedia

Sulfuric acid (American spelling) or sulphuric acid (Commonwealth spelling), also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with molecular formula H 2 SO 4.It is a colorless, odorless and viscous liquid that is miscible with water at all concentrations.. The acid in pure form is highly corrosive towards other materials, as it is an oxidant ...

Sulfuric acid - Wikipedia
Sulfuric acid - Wikipedia

The resulting gas is bubbled through nitric acid, which will release brown/red vapors of nitrogen dioxide as the ,reaction, proceeds. The completion of the ,reaction, is indicated by the ceasing of the fumes. This method does not produce an inseparable mist, which is quite convenient. 3SO …

Electrochemical technologies for wastewater treatment and ...
Electrochemical technologies for wastewater treatment and ...

Compared to copper, the recovery of ,nickel, is more challenging because the electrodeposition of ,nickel, on the cathode is difficult due to the hydrogen evolution ,reaction,, and therefore the recovery efficiency is low. 437 The feasibility of ,nickel, recovery and water reuse was investigated using three ,electrochemical, processes (EI, ED and electrodeionization (EDI)) for both high and low ,nickel, concentrations in ,wastewater,. Almost 99.8% of ,nickel, …

Heavy Metals in Contaminated Soils: A Review of Sources ...
Heavy Metals in Contaminated Soils: A Review of Sources ...

Nickel, can also end up in surface water when it is a part of ,wastewater, streams. The larger part of all Ni compounds that are released to the environment will adsorb to sediment or soil particles and become immobile as a result. In ,acidic, soils, however, Ni becomes more mobile and often leaches down to the adjacent groundwater.

Use of Wastage Biomaterial/Biomass for Wastewater ...
Use of Wastage Biomaterial/Biomass for Wastewater ...

Use of Wastage Biomaterial/Biomass for ,Wastewater, Treatment and Modeling: Mathematical Modeling for Adsorption Processes: 10.4018/978-1-7998-4921-6.ch015: Recently, the existence of toxic materials in our environment has caused severe concern to the living organism. The main causes for the contamination of such

(PDF) Chemistry - Gilbert | Tín Phạm - Academia.edu
(PDF) Chemistry - Gilbert | Tín Phạm - Academia.edu

Academia.edu is a platform for academics to share research papers.

Energy & Fuels | Vol 35 No 6 - American Chemical Society
Energy & Fuels | Vol 35 No 6 - American Chemical Society

Co 1 Al 2 (OH) m Layered Double Hydroxide/Graphitic Carbon Nitride Composite Nanostructure: An Efficient Water Oxidation ,Reaction, Electrocatalyst in an Alkaline Electrolyte. Tanmay Bhowmik, Ranjit Mishra, and ; Sudip Barman*

Removal of heavy metal ions from wastewaters: A review ...
Removal of heavy metal ions from wastewaters: A review ...

1/3/2011, · And kaolinite clay was used for removing metal ions from real ,wastewater containing, Pb(II), where its concentration was reduced from 160.00 mg/L to 8.00 mg/L. Agoubordea and Navia (2009) reported zinc and copper removal from aqueous solutions using brine sediments, sawdust and the mixture of both materials.

Leaching in Metallurgy and Metal Recovery
Leaching in Metallurgy and Metal Recovery

1) Vat ,Leaching,: Also known as “agitated tank” ,leaching,, the lixiviant comes into contact with the metal material in large vats or tanks, which can be stirred, enhancing the ,reaction, kinetics. The metal ,containing, solid, such as concentrate, ore, residue, or slag, often undergoes size reduction via crushing and grinding prior to ,leaching,.

Treatment of Wastewater Contaminated with Nickel Using ...
Treatment of Wastewater Contaminated with Nickel Using ...

battery manufacturing industries contain toxic substances, metal acids, alkalis, and other substances. Removal of heavy metals such as nickel from aqueous solutions is necessary because of the frequent appearance of these metals in waste streams. This problem has received considerable attention in

Mechanistic Studies of the Oxygen Evolution Reaction ...
Mechanistic Studies of the Oxygen Evolution Reaction ...

20/2/2013, · A critical determinant of solar-driven water splitting efficiency is the kinetic profile of the O2 evolving catalyst (OEC). We now report the kinetic profiles of water splitting by a self-assembled ,nickel,–borate (NiBi) OEC. Mechanistic studies of anodized films of NiBi exhibit the low Tafel slope of 2.3 × RT/2F (30 mV/decade at 25 °C).

Handbook for Sampling and Sample Preservation of Water and ...
Handbook for Sampling and Sample Preservation of Water and ...

For example, if one desires to measure the flow of water/,wastewater, through a 30.4 cm (12 inch) pipe, take a 60.8 cm (2 foot) length of 30.4 (12 inch) pipe closed at one end, and fill it up with water/,wastewater containing, a known concentration of the radioactive tracer C to obtain mi Hi curies per cubic meter (gallon).

Reversible Electrochemical Energy Storage Based on Zinc ...
Reversible Electrochemical Energy Storage Based on Zinc ...

The development of rechargeable Zinc-ion batteries (ZIBs) has been hindered by the lack of efficient cathode materials due to the strong binding of divalent zinc ions with the host lattice. Herein, we report a strategy that eliminates the participation of Zn2+ within the cathode chemistry. The approach involves the use of composite cathode materials that contain Zn halides (ZnCl2, ZnBr2, and ...

Membranes | Free Full-Text | Application of Hybrid ...
Membranes | Free Full-Text | Application of Hybrid ...

Starting from these considerations, the authors tested the CP–UF process for treating ,wastewater containing nickel, using sodium polyacrylate as polymeric complexing agent. A rotating disk membrane module was used ( Figure 10 ) to generate a shear field on the membrane surface, thus evaluating the influence of the shear field on the stability of polymer-Ni complex.

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

4/12/2017, · In another study, ,wastewater, having heavy metals and textile dyes was collected from the local metal, and the textile processing industry in Turkey was treated with Punica granatum L. peels. Under optimum experimental conditions the removal of Pb (II) was 98.07%. Simulated water ,containing, interfering ions also showed a removal efficiency of 98 ...

Professor Shizhang Qiao | Staff Directory
Professor Shizhang Qiao | Staff Directory

ARC Laurate Fellowship (2017-2022), FL170100154, Solar-driven Sustainable Production of Fuels and Chemicals, $2,683,730. ARC Dicovery project (2017-2019), DP170104464, Design of Photocatalysts for Solar Hydrogen Production, $410,500

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