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Purification of acid wastewater by alum

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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Purification of acid wastewater by alum
Enhanced coagulation with in situ manganese dioxide on ...
Enhanced coagulation with in situ manganese dioxide on ...

This generates a ,manganese,-,dioxide, aluminum network that precipitates readily and facilitates the removal of humic ,acid, molecules by adsorption from the aqueous solution. At pH = 2.0, the hydrolysate of PAS is present in the form [Al(H 2 O) n] 3+ (n = 6–10). The degree of …

Comparison of Manganese Dioxide and Permanganate as ...
Comparison of Manganese Dioxide and Permanganate as ...

amended ,manganese, solid minerals could act as an aqueous PS activator. The objective of this study was to examine the feasibility of using ,manganese, in the form of MnO4 or MnO 2 as an amendment with PS in aqueous solutions to enhance the oxidative removal of 1,4-D from contaminated water. We quantified and compared removal kinetics for 1,4-D with and

water treatment - the oxidants and disinfectants - Degremont®
water treatment - the oxidants and disinfectants - Degremont®

oygen. Oxygen is one of the most abundant elements found in Nature. In its molecular form O 2, oxygen or "dioxygen" is a colourless gas that is relatively insoluble in water (see characteristic constants of gases).. As demonstrated by the oxidation reduction equations, the oxidising capacity of oxygen is heavily dependant on pH and low compared to other oxidants used.

Reductive recovery of manganese from low-grade manganese ...
Reductive recovery of manganese from low-grade manganese ...

The hydrometallurgical strategy of extracting Mn from low-grade Mn ores has attracted attention for the production of electrolytic ,manganese, metal (EMM). In this work, the reductive dissolution of low-grade MnO 2 ores using toxic nitrocellulose acidic ,wastewater, (NAW) as a reductant was investigated for the first time. Under the optimized conditions of an MnO2 ore dosage of 100 g·L ...

Reductive recovery of manganese from low-grade manganese ...
Reductive recovery of manganese from low-grade manganese ...

Reductive recovery of ,manganese, from low-grade ,manganese dioxide, ore using toxic nitrocellulose ,acid wastewater, as reductant Yong-tao Zhang1,2), Zhi-gang Dan3), Ning Duan3), and Bao-ping Xin2) 1) School of Petroleum and Environment Engineering, Yan’an University, Yan’an 716000, China

THE PERMANGANATE METHOD FOR REMOVING MANGANESE FROM ACID ...
THE PERMANGANATE METHOD FOR REMOVING MANGANESE FROM ACID ...

manganese dioxide,. 3Mn2− + 2 MnO 4 - → 5 MnO 2 ↓ † It may seem a paradox that one ,manganese, compound, permanganate, would be used successfully to produce a treated water that is free of ,manganese, contamination. It is the oxidation potency of permanganate that established its use to remove ,manganese, from water and ,wastewater,.

Degradation of amyl xanthate by manganese dioxide | Water ...
Degradation of amyl xanthate by manganese dioxide | Water ...

Amyl xanthate (AX), a widely used reagent in sulfide mineral flotation, has caused serious environmental problems. ,Manganese, dioxides (MnO 2), ubiquitous in natural soils and sediments, are one kind of important oxidant or catalyst in facilitating organic pollutant decomposition.In this study, the oxidative degradation of AX by MnO 2 was investigated in batch experiments.

Reductive recovery of manganese from low-grade manganese ...
Reductive recovery of manganese from low-grade manganese ...

Reductive recovery of ,manganese, from low-grade ,manganese dioxide, ore using toxic nitrocellulose ,acid wastewater, as reductant Yong-tao Zhang1,2), Zhi-gang Dan3), Ning Duan3), and Bao-ping Xin2) 1) School of Petroleum and Environment Engineering, Yan’an University, Yan’an 716000, China

THE PERMANGANATE METHOD FOR REMOVING MANGANESE FROM ACID ...
THE PERMANGANATE METHOD FOR REMOVING MANGANESE FROM ACID ...

manganese dioxide,. 3Mn2− + 2 MnO 4 - → 5 MnO 2 ↓ † It may seem a paradox that one ,manganese, compound, permanganate, would be used successfully to produce a treated water that is free of ,manganese, contamination. It is the oxidation potency of permanganate that established its use to remove ,manganese, from water and ,wastewater,.

Isotherm Kinetics and Thermodynamics of Cu(II) and Pb(II ...
Isotherm Kinetics and Thermodynamics of Cu(II) and Pb(II ...

manganese, was recovered from groundwater treatment sludge via reductive ,acid, leaching and converted into spherical aggregates of high-purity MnO2. The as-synthesized MnO2 was used to adsorb Cu(II) and Pb(II) from single-component metal solutions. High metal uptake of 119.90 mg g 1

Adsorption Removal of Humic Acid from Micro-Polluted Water ...
Adsorption Removal of Humic Acid from Micro-Polluted Water ...

Adsorption Removal of Humic Acid from Micro-Polluted Water Using in Situ Manganese Dioxide. The adsorption removal of humic acid (HA) from micro-polluted water using manganese dioxide (MnO2) formed in situ, which was preparedthrough the oxidation of MnSO4 using KMnO4,was investigated through batch experiments including kinetics,

water treatment - the oxidants and disinfectants - Degremont®
water treatment - the oxidants and disinfectants - Degremont®

oygen. Oxygen is one of the most abundant elements found in Nature. In its molecular form O 2, oxygen or "dioxygen" is a colourless gas that is relatively insoluble in water (see characteristic constants of gases).. As demonstrated by the oxidation reduction equations, the oxidising capacity of oxygen is heavily dependant on pH and low compared to other oxidants used.

Oxidative Removal of Bisphenol A by Manganese Dioxide ...
Oxidative Removal of Bisphenol A by Manganese Dioxide ...

The exceptional efficiency of MnO2 in removing BPA represents a potential use of MnO2 to treat waters containing phenolic compounds and also suggests a potentially important role of oxide-facilitated abiotic transformations in BPA attenuation in natural soil and sediment environments. ACS.

Enhanced coagulation with in situ manganese dioxide on ...
Enhanced coagulation with in situ manganese dioxide on ...

This generates a ,manganese,-,dioxide, aluminum network that precipitates readily and facilitates the removal of humic ,acid, molecules by adsorption from the aqueous solution. At pH = 2.0, the hydrolysate of PAS is present in the form [Al(H 2 O) n] 3+ (n = 6–10). The degree of …

Kinetics of reduction leaching of manganese dioxide ore ...
Kinetics of reduction leaching of manganese dioxide ore ...

[1,2]. ,Manganese dioxide, is stable under both acidic and alkaline oxidizing conditions, so the extraction of ,manganese, from ,manganese dioxide, ores (MDO) must be carried out under reducing conditions [3]. Generally, MDO can be treated by roasting reduction-,acid, leaching and direct reduction leaching in H 2SO 4 or HCl solution [4,5]. The reductants in H 2SO

Reductive recovery of manganese from low-grade manganese ...
Reductive recovery of manganese from low-grade manganese ...

The hydrometallurgical strategy of extracting Mn from low-grade Mn ores has attracted attention for the production of electrolytic ,manganese, metal (EMM). In this work, the reductive dissolution of low-grade MnO 2 ores using toxic nitrocellulose acidic ,wastewater, (NAW) as a reductant was investigated for the first time. Under the optimized conditions of an MnO2 ore dosage of 100 g·L ...

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