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Treatment of strong acid azo dye 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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Treatment of strong acid azo dye wastewater
Physicochemical Parameters of the Methylparaben Adsorption ...
Physicochemical Parameters of the Methylparaben Adsorption ...

the adsorbent preparation requires several steps and the use of reagents that are toxic to the environment (2,2-,azodiisobutyronitrile,) activated carbon-chitosan composite: 0.56: used in real ,wastewater, samples. large specific surface area easy reuse: the adsorption capacity is pH-dependent: lime and lemon waste (bioadsorbents) 0.11

Molecules | Free Full-Text | Preparation of Poly ...
Molecules | Free Full-Text | Preparation of Poly ...

A series of poly (allylthiourea-co-acrylic acid) hydrogels were synthesized in isopropanol using ethylene dimethacrylate (EGDMA) and ,azodiisobutyronitrile, (AIBN) as crosslinking reagent and initiator, respectively . The mixtures were then allowed to react at 70 °C for 4 h with the protection of nitrogen gas.

Reactive Adsorption of Parabens on Synthesized Micro- and ...
Reactive Adsorption of Parabens on Synthesized Micro- and ...

In this study, the surface of magnetite was modified with styrene (St) as the functional monomer, divinylbenzene (DVB) as the crosslinking agent, polyvinyl pyrrolidone (PVP) as the stabilizer, 2,2-,azodiisobutyronitrile, (AIBN) as the radical initiator and ethanol as the solvent to prep. magnetic nanoparticles with a Ph group (PS/Fe3O4) and use this Ph compd. to absorb parabens.

Development Document For Effluent Limitations Guidelines ...
Development Document For Effluent Limitations Guidelines ...

Acrylonitrile I3" ^ 40 1,3-butadiene 60 Emulsifier 2.4 ,Azodiisobutyronitrile, 0.3 t-dodecyl mercaptan 0.5 Water 200 Before starting the reaction, pH is adjusted to about 8 using potassium hydroxide. Conversion of 92 percent can be obtained in 22-1/2 hours at 45°C (113°F) giving a …

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