Chemical Production Planning Optimization with Optimal Management of Purchase and Inventory

Wang, Ruqiang; Li, Chufu; He, Xu; Chen, Bingzhen; Wang, Ping; Wang, Heng-Qiu; Dong, Chun-Jian

doi:10.1252/jcej.08we104

Cited by 11 publications

(11 citation statements)

References 4 publications

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“…CO 3 2− and HCO 3 − quenched SO 4 • − and •OH by Equations ()–() 64–66 . In addition, CO 3 2− and HCO 3 − changed the solution pH, reducing the valid concentration of Fe 2+ 67 . Figures 3f and S4f indicated that SO 4 2 − essentially did not affect the removal of SAs in the coupled system.…”

Section: Resultsmentioning

confidence: 92%

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Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Yao

et al. 2023

Applied Organom Chemis

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The Fe 2+ -activated persulfate and H 2 O 2 (Fe 2+ /persulfate/H 2 O 2 ) system achieved 94% removal of four mixed sulfonamides with 300-s treatment and possessed excellent complementarity and stability over a wide pH (3-11) and temperature (5-65 C) range. The quenching and electron spin resonance spectroscopy results confirmed the coexistence of sulfate radicals and hydroxyl radicals in the coupled system, which were responsible for the elimination of sulfonamides under ambient conditions. The reaction rate constants of sulfate radicals and hydroxyl radicals at possible reactive sites distinguished the difference in removal ratios of four sulfonamides, according to experimental determination and density functional theory calculations. The removal ratio of sulfathiazole was higher than others because its calculated reaction rate constants of sulfate radicals and hydroxyl radicals were higher than those of sulfamerazine, sulfamethoxazole, and sulfamethazine. The finding provided a reference for investigating the removal mechanism of mixed organic pollutants in the presence of multiple free radicals.

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Section: Resultsmentioning

confidence: 92%

“…As known, many kinds of cations and anions in aquatic environments show a non‐negligible effect on free radical production 57 . Therefore, we discussed the influence of coexisting ions on the coupled system.…”

Section: Resultsmentioning

confidence: 99%

Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Yao

et al. 2023

Applied Organom Chemis

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“…As shown in Figure 6b, Cl − had a feeble promotion effect on the deterioration of RhB in the CoP/PAA system. It is known that Cl − is a frequent influential factor in AOPs, and would react quickly with active radicals to generate various active chlorine‐containing radicals such as HClO, Cl•, ClO•, and so on [55]. Active chlorine species are selective radicals and tend to react with electron‐rich groups.…”

Section: Resultsmentioning

confidence: 99%

“…Various ROS, including •OH, 1 O 2 , O 2 •– , and R‐O•, were customarily generated in AOPs, which played a critical role in organic pollutant degradation of water pollution [15]. There have been huge amounts of available technologies to recognize ROS and determine comparative content, for instance fluorescence spectrometry [16], high‐performance liquid chromatography (HPLC) [17], electrochemistry [18], electron paramagnetic resonance (EPR) [19], UV–vis spectrometry [20], scavenger experiments, and chemiluminescence (CL).…”

Section: Introductionmentioning

confidence: 99%

Chemiluminescence‐assisted study on a peracetic acid‐based advanced oxidation process activated with cobalt phosphide

et al. 2023

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In recent years, the elimination of organic pollutants using advanced oxidation processes (AOPs) based on peracetic acid (PAA) has drawn increasing attention due to the high oxidative potential and low byproducts. However, to explore more efficient and stable PAA‐based AOPs, there is still great room for study on the activation of PAA and degradation mechanism in the reaction process. In this study, a new PAA‐based AOP activated by metal–organic framework‐derived cobalt phosphide (CoP) and accompanied by chemiluminescence (CL) behaviour was explored. The CoP/PAA system could efficiently degrade 99.98% of RhB (20 mg L−1) within 5 min at pH 7 compared with the conventional Co3O4/PAA system (merely 17.29%), and the degradation process was matched well with the pseudo‐first‐order kinetic, and the kinetic constants was ~23.7 times higher than that of Co3O4 (0.546 min−1 for CoP vs. 0.023 min−1 for Co3O4). In the CoP/PAA/RhB process, the CL intensity was related to the concentration of 1O2, O2•– and acetyl peroxyl radicals [CH3C(O)OO• and CH3C(O)O•]. Therefore, CL analysis, combined with quenching tests and electron paramagnetic resonance analysis, was used to study the degradation mechanism in detail, and 1O2 was confirmed as the dominant contributor for the dye degradation.

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“…The results point out that CO 3 ⋅ − is the oxidizing agent formed under neutral conditions. The formation of carbonate radical anions in natural water and surface ocean can indeed have significant effects on the biochemistry of iron and other elements, as well as the degradation of organic pollutants [42] . Carbonate radical anions can react with iron species such as Fe II and Fe III , to form iron carbonate complexes that can have implications for nutrient cycling and ocean acidification.…”

Section: Figurementioning

confidence: 99%

Overlooked Formation of Carbonate Radical Anions in the Oxidation of Iron(II) by Oxygen in the Presence of Bicarbonate

2023

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Iron(II), (Fe(H2O)62+, (FeII) participates in many reactions of natural and biological importance. It is critically important to understand the rates and the mechanism of FeII oxidation by dissolved molecular oxygen, O2, under environmental conditions containing bicarbonate (HCO3−), which exists up to millimolar concentrations. In the absence and presence of HCO3−, the formation of reactive oxygen species (O2⋅−, H2O2, and HO⋅) in FeII oxidation by O2 has been suggested. In contrast, our study demonstrates for the first time the rapid generation of carbonate radical anions (CO3⋅−) in the oxidation of FeII by O2 in the presence of bicarbonate, HCO3−. The rate of the formation of CO3⋅− may be expressed as d[CO3⋅−]/dt=[FeII[[O2][HCO3−]2. The formation of reactive species was investigated using 1H nuclear magnetic resonance (1H NMR) and gas chromatographic techniques. The study presented herein provides new insights into the reaction mechanism of FeII oxidation by O2 in the presence of bicarbonate and highlights the importance of considering the formation of CO3⋅− in the geochemical cycling of iron and carbon.

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Chemical Production Planning Optimization with Optimal Management of Purchase and Inventory

Cited by 11 publications

References 4 publications

Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Chemiluminescence‐assisted study on a peracetic acid‐based advanced oxidation process activated with cobalt phosphide

Overlooked Formation of Carbonate Radical Anions in the Oxidation of Iron(II) by Oxygen in the Presence of Bicarbonate

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Chemical Production Planning Optimization with Optimal Management of Purchase and Inventory

Cited by 11 publications

References 4 publications

Complementarity and action mechanisms of Fe2+‐activated persulfate and H2O2 system

Complementarity and action mechanisms of Fe2+‐activated persulfate and H2O2 system

Chemiluminescence‐assisted study on a peracetic acid‐based advanced oxidation process activated with cobalt phosphide

Overlooked Formation of Carbonate Radical Anions in the Oxidation of Iron(II) by Oxygen in the Presence of Bicarbonate

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Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system

Complementarity and action mechanisms of Fe²⁺‐activated persulfate and H₂O₂ system