Study on Purification Technology of High-salt Nitrogenous Printing and Dyeing Wastewater

Dong, Wenbo; Wu, Yaoting; Deng, Xiaoshuang; Liang, Xiaoya; Zhang, Linghua; Zhu, Yimin

doi:10.1088/1755-1315/237/2/022032

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…In recent years, China's protection of the ecological environment has been gradually strengthened, and the Emission Standards for Water Pollutants in the Textile Dyeing and Finishing Industry have been revised, with more stringent requirements for the discharge of dye wastewater [1]. Improper treatment of dye wastewater not only pollutes the ecological environment but also jeopardizes human health [2].…”

Section: Introductionmentioning

confidence: 99%

Study of adsorption of Congo red on ferric oxide@straw magnetic composites

Qu,

Ma,

Liu

et al. 2024

J. Phys.: Conf. Ser.

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In this paper, citric acid-modified corn stalk and Fe3O4 were used to make magnetic straw adsorbent to realize rapid separation of adsorbent and wastewater. The influences of pH, dosage, reaction time, and initial stress on the Congo red adsorption rate were investigated. Then, we used adsorption kinetics and isothermal linear adsorption adjustment to explore the adsorption mechanism. Studies have shown the increasing doses of magnetic adsorbents on straw. When the dose was 8 g/L, the commercial adsorption rate was 95%. The adsorption process of magnetic straw adsorbent for Congo red was exothermic. Adsorption was mainly chemisorption, and the adsorption process was relatively fast, reaching adsorption equilibrium after about 90 min.

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Section: Introductionmentioning

confidence: 99%

Study of adsorption of Congo red on ferric oxide@straw magnetic composites

Qu,

Ma,

Liu

et al. 2024

J. Phys.: Conf. Ser.

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The Removal of Organic Pollutants and Ammonia Nitrogen from High-Salt Wastewater by the Electro-Chlorination Process and Its Mechanism

Zhou,

Hou,

Zhou

2024

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Electro-chlorination (E-Cl) is an emerging and promising electrochemical advanced oxidation technology for wastewater treatment with the advantages of high efficiency, deep mineralization, a green process, and easy operation. It was found that the mechanism of pollutant removal by electro-chlorination mainly involves an indirect oxidation process, in which pollutant removal is mainly driven by the intermediate active species, especially RCS and chlorine radicals, with a strong oxidization ability produced at the anodes. In this work, we summarized the principles and pathways of the removal/degradation of pollutants (organic pollutants and ammonia nitrogen) by E-Cl and the major affecting factors including the applied current density, voltage, electrolyte concentration, initial pH value, etc. In the E-Cl system, the DSA and BDD electrodes were the most widely used electrode materials. The flow-through electrode reactor was considered to be the most promising reactor since it had a high porosity and large pore size, which could effectively improve the mass transfer efficiency and electron transfer efficiency of the reaction. Of the many detection methods for chlorine radicals and RCS, electron paramagnetic resonance (EPR) and spectrophotometry with N, N-diethyl-1,4-phenylenediamine sulfate (DPD) as the chromogenic agent were the two most widely used methods. Overall, the E-Cl process had excellent performance and prospects in treating salt-containing wastewater.

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Study on Purification Technology of High-salt Nitrogenous Printing and Dyeing Wastewater

Cited by 2 publications

References 8 publications

Study of adsorption of Congo red on ferric oxide@straw magnetic composites

Study of adsorption of Congo red on ferric oxide@straw magnetic composites

The Removal of Organic Pollutants and Ammonia Nitrogen from High-Salt Wastewater by the Electro-Chlorination Process and Its Mechanism

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