Enhanced dewaterability of lake dredged sediments by electrochemical oxidation of peroxydisulfate on BDD anode

Jiang, Feng; Feng, Xianlu; Lü, Zhenzhou; Wang, Pengfei

doi:10.1016/j.chemosphere.2022.135832

Cited by 10 publications

(2 citation statements)

References 64 publications

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“…Then, the sample was centrifuged at 12,000 rpm for 30 min, and the supernatant was stored at 4 • C for further determination. Extracellular protein (PN) and polysaccharides (PS) were determined by the Coomassie Brilliant Blue method and anthrone-sulfuric acid colorimetry [24].…”

Section: Extracellular Polymeric Substance Extraction and Determinationmentioning

confidence: 99%

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Chen,

Zhang,

et al. 2023

Water

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In wastewater treatment, a low C/N ratio highly inhibits the bioremoval of nitrogen, and commercial external carbon sources are widely used. In order to obtain an economical substitute, fermentation broth of spent mushroom substrates (SMS) was employed here as a carbon source for denitrification in a sequencing batch reactor (SBR). During the domestication process, the SMS fermentation broth-feeding treatment presented comparable nitrogen removal ability (74.44%) with a commercial carbon source group (77.99%). Rhodobacter, Lactobacillus and Pseudomonas were the dominant bacteria in the fermentation broth, and Saccharomycetales Gymnopilus dilepis was the dominant fungi. At the early domestication stage, the relatively high concentration of fermentation broth led to a much lower abundance of typical nitrate reductase genes than the control group. Furthermore, extracellular polymeric substance (EPS) formation was observed in the broth-feeding sample. The microbial structure dynamic was investigated, which showed a high influent effect when 20% fermentation broth was added. As domestication proceeded, similar dominant species in the control and broth-feeding treatments were observed. Overall, SMS fermentation broth can be used as a promising substitute to replace a costly commercial carbon source.

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Section: Extracellular Polymeric Substance Extraction and Determinationmentioning

confidence: 99%

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Chen,

Zhang,

et al. 2023

Water

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“…Dredging is an important process for the health and performance of waterways and aquatic systems (Jiang, Feng, et al, 2022; Liberati et al, 2023). However, large quantities of dredged sediments are generated from the sediment dredging processes, and a large volume of dredged water is generated during the settlement of the dredging slurry (Zhu et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Purification of dredged water by magnetic coagulation: Response surface optimization and dissolved organic matter removal characteristics

Xiao,

Feng,

Zhang

et al. 2024

Water Environment Research

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In the present study, magnetic coagulation was used to treat dredged water and the response surface method was used to optimize process parameters. The dissolved organic matter (DOM) removal characteristics were characterized by three‐dimensional fluorescence spectrometry and ultra‐high resolution mass spectrometry. During the magnetic coagulation process, the suspended solids (SS) removal rate increased initially and then decreased under conditions of increasing magnetic powder dosage and stirring rate. After magnetic coagulation and precipitation for 20 min, the contents of SS, ammonia nitrogen, chemical oxygen demand, and total phosphorus in the treated dredged water met the requirements of the discharge standard (GB8978–1996, China). Three‐dimensional fluorescence results showed that magnetic coagulation selectively removed fulvic acids and humic acid substances. After magnetic coagulation with precipitation for 10 min and 20 min, the total relative content of lignins, tannins, proteins, lipids, aminosugars, unsaturated hydrocarbons, condensed aromatic structures, and carbohydrates decreased by 26.3% and 39.4%, respectively. After magnetic coagulation, the distribution range of small molecule DOM shifted to the low H/C and high O/C regions. This study provides a novel perspective for studies on the removal of DOM in dredged water by magnetic coagulation.Practitioner Points SS and DOM removal were significantly enhanced by the use of magnetic coagulation. SS removal efficiency was affected by stirring rate and magnetic powder dosage. Magnetic coagulation selectively removed fulvic acids and humic acid substances. DOM molecule shifted to low H/C and high O/C regions after magnetic coagulation.

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Deep insights into the enhanced waste active sludge lysis by MoS2 and Fe2+ co-activated persulfate

Zhang,

Lv,

Zhao

et al. 2024

Chemical Engineering Journal

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Enhanced dewaterability of lake dredged sediments by electrochemical oxidation of peroxydisulfate on BDD anode

Cited by 10 publications

References 64 publications

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Microbiological Mechanisms for Nitrogen Removal Using Anaerobic Fermentation Liquid from Spent Mushroom Substrates as a Carbon Source

Purification of dredged water by magnetic coagulation: Response surface optimization and dissolved organic matter removal characteristics

Deep insights into the enhanced waste active sludge lysis by MoS2 and Fe2+ co-activated persulfate

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