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Acid neutralization of wastewater

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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Acid neutralization of wastewater
Physico-chemical technologies for nitrogen removal from ...
Physico-chemical technologies for nitrogen removal from ...

Ammonia,-rich eluate can be stripped, recovered by chemical absorption or destroyed by ,electrolysis, producing chlorine which reacts with the ,ammonia, to produce ,nitrogen, gas . Figure 7. Simplified diagram of a ion exchange process on a zeolite bed for ,ammonia, removal.

Making an ultralow platinum content bimetallic catalyst on ...
Making an ultralow platinum content bimetallic catalyst on ...

The electrochemical decomposition of ,ammonia, in ,wastewater, plants would, therefore, be attractive since it could simultaneously be used to produce hydrogen using less thermodynamic energy than water ,electrolysis,. 10,12–15 The decomposition of ,ammonia, in an alkaline electrolyte involves the oxidation of the ,ammonia, to ,nitrogen, and the reduction of water to hydrogen, according to the reactions ...

Methods of ammonia removal in anaerobic digestion: a ...
Methods of ammonia removal in anaerobic digestion: a ...

The removal efficiencies were maximum at pH-values 8.5–9, where 82% total ammonium and 98% phosphate were removed with 110 g/L of modified zeolite and 40 minutes reaction time from simulated swine ,wastewater,. However, the presence of various cations (K 2+, Ca 2+, Na 2+ and Mg 2+) had a significantly negative effect on the removal of ,ammonia,-,nitrogen,.

Removal of Nitrogen and Phosphorus from Domestic ...
Removal of Nitrogen and Phosphorus from Domestic ...

Total ,Nitrogen,, whereas for total phosphorus, the method SMEWW-APHA-AWWA-WEF Part 4500-P B Item 5, E: 2012; 22nd Ed. Phosphorus. Sample Preparation 5 was used. In order to de-termine the ,nitrogen, and phosphorous removal percentages, ,equation, 9 was used. For ,nitrogen, and phosphorus: %𝒀𝒀=(𝑪𝑪𝒊𝒊−𝑪𝑪𝒇𝒇 𝑪𝑪𝒇𝒇) (9)

Review—Ammonia Oxidation Electrocatalysis for Hydrogen ...
Review—Ammonia Oxidation Electrocatalysis for Hydrogen ...

30/11/2019, · Aqueous alkaline electrolyte In an AOR cell, the anodic and cathodic reaction in alkaline electrolyte consumes ammonia and hydroxide ions to generate nitrogen, water and electrons [ Equation 4a ], and reduces the water to form hydrogen and regenerate the OH − ions (Equation 4b).

WASTEWATER TREATMENT TECHNOLOGIES FOR THE REMOVAL …
WASTEWATER TREATMENT TECHNOLOGIES FOR THE REMOVAL …

In ,ammonia, stripping, lime or some other caustic substance is generally added to the ,wastewater, until pH reaches 10.8-11.5 standard units, converting ammonium hydroxide ions to ,ammonia, gas according to equilibrium reaction: The equilibrium is governed by pH and temperature, according to the ,equation, describing the reaction's ionization constant (Keq) The equilibrium in water of the two ...

Electrocatalytic Process for Ammonia Electrolysis: A ...
Electrocatalytic Process for Ammonia Electrolysis: A ...

Figure 4 shows the consumption of energy and power for ,ammonia, electrolyser cell at different hydrogen production rates.. As the hydrogen flow rate increases due to applied current,

Catalytic Activity for Nitrogen Electrochemical Reduction ...
Catalytic Activity for Nitrogen Electrochemical Reduction ...

Calibrations: The ,ammonia, concentration was quantified by spectrophotometry with salicylic ,acid,. Firstly, the calibration curve was plotted as follows. A series of 10 mL standard NH4Cl solutions with tconcentrations of 0.0, 0.2, 0.4, 0.6, 1.0, 2.0, 4.0, and 6.0 μg mL−1 in 0.25 M LiClO4 were prepared and separately mixed with 50 µL oxidation solution (0.75 M NaOH and

Electro-Oxidation of Ammonia in Sewage to Nitrogen
Electro-Oxidation of Ammonia in Sewage to Nitrogen

The ,ammonia nitrogen, was determined by Nessler's method with a minimum detectable ,nitrogen, concentration of 0.05 mg/1. The cadmium reduction method which is a modified diazotization (1- naphthylamine-sulfanilic ,acid,) method was employed for the nitrate ,nitrogen, determination.

Electrocatalytic Process for Ammonia Electrolysis: A ...
Electrocatalytic Process for Ammonia Electrolysis: A ...

Figure 4 shows the consumption of energy and power for ,ammonia, electrolyser cell at different hydrogen production rates.. As the hydrogen flow rate increases due to applied current,

Supporting Information - American Chemical Society
Supporting Information - American Chemical Society

reaction time during the ,wastewater electrolysis, S22 ... benzoic ,acid, (BA), 1,4-dimethoxybenzene (DMOB), and carbamazepine (CBZ) (each with an initial concentration of 50 μM) as the probe compounds. ... 3 for ,ammonia, oxidation to ,nitrogen, gas, and 8 for nitrate reduction to ,ammonia,.

Nitrogen removal from wastewater through microbial ...
Nitrogen removal from wastewater through microbial ...

Introduction ,Wastewater, treatment technologies are energy demanding processes. As an example, 3-4% of the total energy demand in the United Kingdom comes from ,wastewater, processes. Also, the Unites States consumes 21 billion kwh for this purpose [1]. ,Nitrogen, removal in ,wastewater, treatment is a …

Ammonia - Wikipedia
Ammonia - Wikipedia

The standard enthalpy change of combustion, Δ H ° c, expressed per mole of ,ammonia, and with condensation of the water formed, is −382.81 kJ/mol. Dinitrogen is the thermodynamic product of combustion: all ,nitrogen, oxides are unstable with respect to N 2 and O 2, which is the principle behind the catalytic converter.

Nitrogen removal from wastewater through microbial ...
Nitrogen removal from wastewater through microbial ...

Introduction ,Wastewater, treatment technologies are energy demanding processes. As an example, 3-4% of the total energy demand in the United Kingdom comes from ,wastewater, processes. Also, the Unites States consumes 21 billion kwh for this purpose [1]. ,Nitrogen, removal in ,wastewater, treatment is a …

Sci Forschen Water and Wastewater Treatment
Sci Forschen Water and Wastewater Treatment

27/1/2018, · industry ,wastewater, total ,nitrogen, and total phosphorus ranges between 4.4-18 mg/L and 2.5-3.7 mg/L, respectively [2]. ,Wastewater, is treated by physical, chemical and biological methods. Physical methods are ineffective and expensive in ,wastewater, treatment. For example, only 10% of phosphorus is removed by ,electrolysis, and reverse osmosis [3,4].

Electrochemical synthesis of nitric acid from air and ...
Electrochemical synthesis of nitric acid from air and ...

INTRODUCTION. Transformations of ,nitrogen, into reactive forms, particularly nitric ,acid, (HNO 3) and ,ammonia, (NH 3), are vital to living organisms and industrial processes [].The worldwide production of HNO 3 and NH 3 was 50 and 150 million metric tons, respectively, in 2017 [].Commercial HNO 3 is produced through the catalytic oxidation of NH 3 (Ostwald process), but this approach is energy ...

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