Enhanced phycocyanin and DON removal by the synergism of H2O2 and micro-sized ZVI: Optimization, performance, and mechanisms

Chen, Dan-wen; Liu, Cheng; Lu, Jie; Mehmood, Tariq; Ren, Yuanyuan

doi:10.1016/j.scitotenv.2020.140134

Cited by 19 publications

(3 citation statements)

References 41 publications

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“…Similarly, Guo et al (Guo 2015) reported 50% removal of DON produced by chlorination while DON removal of KMnO 4 was insignificant. However, a similar phycocyanin derived DON removal efficiency (67%) was achieved using H 2 O 2 /mZVI system (Chen et al 2020). The removal of glutamate by Fe 3 O 4 /PMS reaction system was better than histidine and phenylalanine, while the removal rate of phenylalanine was the lowest.…”

Section: Degradation Efficiencymentioning

confidence: 68%

Removal performance and mechanism of typical amino acids in water by the peroxymonosulfate/Fe3O4 nanoparticles

et al. 2021

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Dissolved organic nitrogen (DON) as precursors of nitrogenous disinfection byproducts (N-DBPs) has become a serious issue for drinking water treatment. Here, Fe3O4/peroxymonosulfate (PMS) system was used to examine the amino acid removal and formation of N-DBPs in the system and the corresponding mechanisms. Results showed a remarked variation in removal efficiency of three typical amino acids, i.e., glutamate (78%), histidine (53%) and phenylalanine (27%) in Fe3O4/PMS system at optimum conditions (0.1 g/L Fe3O4, 1.5 mM PMS, 1 h). Notably, Fe3O4/PMS treatment led to dichloroacetonitrile (DCAN) formation caused by the chlorination of glutamate, phenylalanine and histidine being reduced by 53.3%, 9.7% and 41.9%, respectively. The degradation and subsequent N-DBPs formation in the Fe3O4/PMS system mainly depended on the types and properties of the amino acids. The formation of dichloroacetamide (DCAcAm) exhibited different trends, which may be due to the different R group structure of the three amino acids and the special aromaticity of imidazole ring in the histidine side chain that facilitates its quick electrophilic substitution and ring-opening reaction. This study highlights that the Fe3O4/PMS system is a promising strategy to remove DON and efficiently eliminate N-DBPs formation in the drinking water treatment process depending on the amino acid type.

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Section: Degradation Efficiencymentioning

confidence: 68%

Removal performance and mechanism of typical amino acids in water by the peroxymonosulfate/Fe3O4 nanoparticles

et al. 2021

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“…The polymer terminology and the definition of Fe polymers are provided in references [77][78][79][80]. A Fe:Fe(a,b,c)@C 0 desalination catalyst has a layered structure in which the innermost layer is Fe 0 .…”

Section: Methodsmentioning

confidence: 99%

Conversion of Waste Synthesis Gas to Desalination Catalyst at Ambient Temperatures

Antia¹

2023

Waste

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In this study, a continuous flow of a synthetic, dry, and acidic waste synthesis gas (WSG) (containing N2, H2, CO, CH4, and CO2) at ambient temperatures was first passed through a fixed bed reactor (FBR) containing halite + m-Fe0 and then a saline bubble column diffusion reactor (BCDR) containing m-Fe0. The FBR converted 47.5% of the CO + CH4 + CO2 into n-C0. Passage of the n-C0 into the BCDR resulted in the formation of the desalination catalyst (Fe0:Fe(a,b,c)@C0) + CH4 + CO + CO2 + CxHy, where 64% of the feed n-C0 was converted to gaseous products. The desalination pellets can remove >60% of the water salinity without producing a reject brine or requiring an external energy source. The gaseous products from the BCDR included: CxHy (where x < 6), CO, CO2, and H2.

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“…Polymers can take one of a number of forms. In this study, the following terminology approach is used [17,18,[31][32][33][34]. M = metal.…”

Section: Statistical Methodology Usedmentioning

confidence: 99%

Desalination of Irrigation Water Using Metal Polymers

Antia¹

2022

Water

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Rain-fed and irrigated agriculture associated with salinized soil and saline water supplies is characterized by low crop yields. Partial desalination of this saline water will increase crop yields. Recent studies have established that supported metal polymers can be used to produce partially desalinated irrigation water without producing a waste reject brine. This study assesses the ability of more than 90 different unsupported metal polymer formulations (containing one or more of Al, Ca, Fe, K, Mg, Mn, and Zn) to remove Na+ ions and Cl− ions from saline water (seawater, brine, brackish water, and flowback water). The polymers were constructed using a simple sol-gel approach at ambient temperatures. The overall ion removal followed a first-order reaction. Removal selectivity between Na+ and Cl− ions was a function of polymer formulation. Mg@Al polymers preferentially remove Cl− ions, while Fe@Ca polymers tend to remove Cl− and Na+ ions in more equal proportions. Ion removal can be rapid, with >50% removed within 1 h. These results were used to develop a process methodology, which will allow most seawater, brackish water, and saline flowback water to be desalinated to form usable irrigation water.

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Enhanced phycocyanin and DON removal by the synergism of H2O2 and micro-sized ZVI: Optimization, performance, and mechanisms

Cited by 19 publications

References 41 publications

Removal performance and mechanism of typical amino acids in water by the peroxymonosulfate/Fe3O4 nanoparticles

Removal performance and mechanism of typical amino acids in water by the peroxymonosulfate/Fe3O4 nanoparticles

Conversion of Waste Synthesis Gas to Desalination Catalyst at Ambient Temperatures

Desalination of Irrigation Water Using Metal Polymers

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