Biological Transformations of Nitrogen Compounds

Delwiche, C. C.; Rohlich, Gerard A.

doi:10.1021/ie51400a021

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…Nitrogen-containing organic compounds are toxic, and various nitrogen compounds can be converted between each other, such as NO 3 --N and DON. 25,26 MHC can effectively remove DON in water, reducing the possibility of DON transformation to NO 3 --N.…”

Section: Coagulation Performancementioning

confidence: 99%

Nitrate-Reducing Magnetic Hybrid Coagulant for Rapid and Advanced Wastewater Treatment and its Mechanistic Investigation

Liu

Chen

et al. 2020

Preprint

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Dissolved contaminants (NO 3 --N, etc.) in municipal sewage effluent and polluted water resources need to be further removed, but common advanced water treatment technologies usually have unsatisfactory performance and large process footprints.Magnetic seeding coagulation (MSC) has a rapid settling speed; however, it is less effective for removing dissolved contaminants and cannot recovers effective components. Herein, a novel covalently bound magnetic hybrid coagulant (MHC) was synthesized and used to treat secondary biological effluent. MHC settling time was 2/3 shorter than traditional MSC and showed high removal efficiencies for conventional coagulation indicators and dissolved contaminants such as NO 3 --N and organic nitrogen. The NO 3 --N removal mechanisms included NO 3 --N capture through the electrostatic attraction and the collision efficiency enhancement. MHC integral structure can be bioregenerated for multiple cycles. Because of its effectiveness in removing dissolved contaminants rapidly, MHC has potential application in advanced water treatment, especially in land-scarce areas.

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Section: Coagulation Performancementioning

confidence: 99%

Nitrate-Reducing Magnetic Hybrid Coagulant for Rapid and Advanced Wastewater Treatment and its Mechanistic Investigation

Liu

Chen

et al. 2020

Preprint

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“…The trans formations of carbon compounds by microorganisms were excellently re viewed by Nickerson (66) who pointed out the common pathways of oxi dations for carbohydrates, alcohols, acids, fats, waxes, and aromatic ring compounds. Delwicke (67) showed that the degradation of nitrogen com pounds would invariably be accomplished by hydrolysis of proteins or other complex nitrogen molecules and would result in the eventual de composition of the lower molecular weight residues. Diverse microorgan isms participate in degradation of sulfur compounds, many of which com mand attention as they produce materials having objectionable odors or cause corrosion of industrial equipment [Starkey (68)].…”

Section: Waste Treatmentmentioning

confidence: 99%