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Cause of formation of acid mine 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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Cause of formation of acid mine wastewater
Significant increase in cyanide degradation by Bacillus sp ...
Significant increase in cyanide degradation by Bacillus sp ...

10/11/2017, · For removal of wastewater containing cyanide, the biodegradation method has been suggested. In this study we found that, Bacillus sp. M01 PTCC 1908, which has a high resistance (15 mM–976 mg L −1 ) and degrading ability (10 mM–562 mg L −1 ), was suggested for biodegradation process in many industries that dealing with this compound.

BIODEGRADATION OF CYANIDE USING BACILLUS MEGATERIUM | …
BIODEGRADATION OF CYANIDE USING BACILLUS MEGATERIUM | …

Pseudomonas species degraded ,cyanide, through a pathway where ,cyanide, is converted to ammonium and formate ,under, both aerobic and anaerobic ,conditions, (Watanabe et al., 1998). Like the ,cyanide, degrading pathway of Pseudomonas, Alcaligenes xylosoxidans subsp. denitrificans DF3 (Ingvorsen et al., 1991) and Bacillus pumilus C1 (Meyers et al., 1991) converted ,cyanide, to ammonium and formate via …

Photoconversion of Cyanide to Dinitrogen Using the Durable ...
Photoconversion of Cyanide to Dinitrogen Using the Durable ...

The ,cyanide removal, rate in the synthetic ,wastewater, was only moderately reduced compared with that in DI water ,containing, the same level of Cl –, which indicates that the proposed PEC reaction works even in the presence of interfering contaminants. The ,cyanide removal, was negligible in the absence of chloride, which indicates that RCS is ...

Application of Ferrate for Advanced Water and Wastewater ...
Application of Ferrate for Advanced Water and Wastewater ...

22/8/2019, · Among the different metal complexes, zinc ,cyanide, (CN) found in the effluent ,wastewater, of metal finishing industries had a significant environmental impact. The effect of Zn(II) on the ,removal, of ,cyanide, by Fe(VI) was studied by Yngard et al. at different alkaline pH ,conditions,.

The method of treatment of water solutions containing ...
The method of treatment of water solutions containing ...

About the treatment of ,wastewater containing, hydrogen ,cyanide,, in this patent says nothing [2] The closest analogue is the way to remove ,acidic, gases, namely, carbon dioxide, sulfur dioxide, hydrogen sulfide and hydrogen ,cyanide,, and mixtures thereof, as well as free and combined ammonia from dilute aqueous solutions by Stripping them in an inert gaseous environment at elevated temperatures [3]

Analysis of Cyanide (Total Weak Acid Dissociable and ...
Analysis of Cyanide (Total Weak Acid Dissociable and ...

when refluxed under strongly acidic conditions. Total cyanide is determined analytically through strong acid distillation or UV radiation and exposure to strong acid followed by analysis of liberated free cyanide. In water, total cyanide includes the following dissolved species: free cyanide, weak metal cyanide complexes and strong metal cyanide complexes.

Degradation of cyanide from gold processing effluent by H ...
Degradation of cyanide from gold processing effluent by H ...

cyanide removal, using H 2 O 2 (no catalyst), Fenton (H 2 O 2 +Fe(II)), H 2 O 2 +Cu(II), and alkaline chlorination processes on a laboratory scale. During the processes, the effect of the main parameters, namely, pH, oxidant dosage, temperature and reaction time on the ,removal, of ,cyanide, from gold processing ,wastewater, was studied (Table 1).

total cyanide determination by reflux distillation
total cyanide determination by reflux distillation

2.1 The ,cyanide,, as hydrocyanic acid (HCN), is released from samples ,containing cyanide, by means of a reflux distillation operation ,under acidic conditions, and absorbed in a scrubber ,containing, sodium hydroxide solution. Live Chat

Destruction of Cyanide in Aqueous Solution by ...
Destruction of Cyanide in Aqueous Solution by ...

anode ,under, different ,conditions,, such as initial pH, current density and flow rate. The results show that the destruction of ,cyanide, on the anode is more favorably and completely conducted in strong alkaline solution. The conversion of ,cyanide, and COD ,removal, are 98.2 % and 84.2 % at initial pH 13

Cyanides and their Attenuation in wastewaters using green ...
Cyanides and their Attenuation in wastewaters using green ...

The term ,cyanide, is used to refer to a wide array of ,cyanide containing, chemicals. A ,cyanide, is any chemical compound that contains the monovalent combining group CN. This ... compounds ,under, highly ,acidic conditions, Co(CN) 6 +, Fe(CN) 6-3, Fe(CN) 6-4, Co(CN) 6-4, Au(CN) 2-1, Hg(CN) 4 2-Total ,cyanide, the sum of all of the different forms of ...

Cyanide - Wikipedia
Cyanide - Wikipedia

A ,cyanide, is a chemical compound that contains the group C≡N. This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogen atom.. In inorganic cyanides, the ,cyanide, group is present as the anion CN −.Soluble salts such as sodium ,cyanide, and potassium ,cyanide, are highly toxic. Hydrocyanic acid, also known as hydrogen ,cyanide,, or HCN, is a highly volatile ...

BIODEGRADATION OF CYANIDE USING BACILLUS MEGATERIUM | …
BIODEGRADATION OF CYANIDE USING BACILLUS MEGATERIUM | …

Pseudomonas species degraded ,cyanide, through a pathway where ,cyanide, is converted to ammonium and formate ,under, both aerobic and anaerobic ,conditions, (Watanabe et al., 1998). Like the ,cyanide, degrading pathway of Pseudomonas, Alcaligenes xylosoxidans subsp. denitrificans DF3 (Ingvorsen et al., 1991) and Bacillus pumilus C1 (Meyers et al., 1991) converted ,cyanide, to ammonium and formate via …

Electroplating Wastewater Treatment_Method
Electroplating Wastewater Treatment_Method

For example, the copper-bearing water is mixed into the chromium-,containing waste water, (because phosphorus copper is very unstable ,under acidic conditions,), the oil-,containing waste water, is mixed into the ,cyanide,-,containing waste water,, and the COD can be properly removed during the secondary oxidation of the ,cyanide, water.

Photoconversion of Cyanide to Dinitrogen Using the Durable ...
Photoconversion of Cyanide to Dinitrogen Using the Durable ...

The ,cyanide removal, rate in the synthetic ,wastewater, was only moderately reduced compared with that in DI water ,containing, the same level of Cl –, which indicates that the proposed PEC reaction works even in the presence of interfering contaminants. The ,cyanide removal, was negligible in the absence of chloride, which indicates that RCS is ...

Removal and recovery of metal cyanides using a combination ...
Removal and recovery of metal cyanides using a combination ...

Therefore, biosorption ,under acidic, face interaction and is characterised by rapid uptake ,conditions, would be a safe procedure. Metal ,cyanide, of ions by microbial surfaces. Rapidity of the process ,containing, industrial waste waters generally have pH makes it a good candidate for use in effluent treatment ranging from 5.5 to 12.5.

Degradation of cyanide from gold processing effluent by H ...
Degradation of cyanide from gold processing effluent by H ...

cyanide removal, using H 2 O 2 (no catalyst), Fenton (H 2 O 2 +Fe(II)), H 2 O 2 +Cu(II), and alkaline chlorination processes on a laboratory scale. During the processes, the effect of the main parameters, namely, pH, oxidant dosage, temperature and reaction time on the ,removal, of ,cyanide, from gold processing ,wastewater, was studied (Table 1).

Cyanides and their Attenuation in wastewaters using green ...
Cyanides and their Attenuation in wastewaters using green ...

The term ,cyanide, is used to refer to a wide array of ,cyanide containing, chemicals. A ,cyanide, is any chemical compound that contains the monovalent combining group CN. This ... compounds ,under, highly ,acidic conditions, Co(CN) 6 +, Fe(CN) 6-3, Fe(CN) 6-4, Co(CN) 6-4, Au(CN) 2-1, Hg(CN) 4 2-Total ,cyanide, the sum of all of the different forms of ...

Cyanide - Wikipedia
Cyanide - Wikipedia

A ,cyanide, is a chemical compound that contains the group C≡N. This group, known as the cyano group, consists of a carbon atom triple-bonded to a nitrogen atom.. In inorganic cyanides, the ,cyanide, group is present as the anion CN −.Soluble salts such as sodium ,cyanide, and potassium ,cyanide, are highly toxic. Hydrocyanic acid, also known as hydrogen ,cyanide,, or HCN, is a highly volatile ...

Removing Heavy Metals From Wastewater
Removing Heavy Metals From Wastewater

wastewater,. Some variations in the exact values of the metal concentrations will occur due to the presence of other substances in the ,wastewater,. Compounds such as ,cyanide, or ammonia can inhibit precipitation of metals, and limit their ,removal, to the point where discharge limits can be exceeded. Also, note that not all metals

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