Fischer–Tropsch synthetic wastewater treatment with Fe/Mn@CH: Catalytic ozonation and process evaluation

Guo, Lei; Xiao, Zhiqiang; Sun, Weibang; Xu, Hao; Xu, Yanhua; Zheng, Huaili; Sun, Yongjun

doi:10.1016/j.seppur.2021.119274

Cited by 20 publications

(2 citation statements)

References 38 publications

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“…Distillation (the most widely used method) and adduction (a high-efficiency and low energy consumption method) play crucial roles in the industrial operations. As shown in Table S4, the TAC [28][29][30][31][32][33][34][35] for different processes was calculated, assuming the operating time as 8000 h and the payback period as five years. The TAC includes total energy consumption (kW), the annual operating costs (10 6 US$) and the capital investment (10 9 US$).…”

Section: Modeling Design and Tac Calculationmentioning

confidence: 99%

Performance improvement potential of integrated process of urea‐adduction and distillation for separation of 1‐octene from F–T synthetic products

Ren

Liu²,

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND C8 α‐olefins are regarded as top value‐added compounds from Fischer–Tropsch (F−T) products. However, the separation of purified C8 α‐olefins has proven to be a daunting challenge owing to their relative volatility. As the traditional methods for C8 α‐olefins purification are energy‐ and capital cost‐intensive, an efficient method for the separation of n‐hydrocarbons and iso‐hydrocarbons will provide a valuable and more sustainable alternative to address these challenges. RESULTS In the urea‐adduction method, the purity of 1‐octene was increased from 96.02 to 98.04 wt%, and the yield was 93.62 %, which broke the limitation of traditional distillation on the purification of 1‐octene. By combining the urea‐adduction method and distillation, a promising and energy‐efficient integrated separation process was proposed. First, it recovers C8 n‐hydrocarbons through adduction reactions. Second, 1‐octene and n‐octane are separated with integrated distillation technology. The results indicated that this process can be utilized to recover 1‐octene from the C8 fraction of F–T synthetic products with a recovery yield of 93.6 % and an increase in purity from 65.6 to 98.7 wt%. As shown in Fig. 6(b), process modeling demonstrates that it trims energy consumption to 50.1% and total TAC to 55.1% in comparison with the traditional separation process. CONCLUSION It was found that the integrated process can produce high‐purity 1‐octene, indicating that the integration process demonstrates clear potential advantages, such as reducing energy consumption and increasing economic value. This approach can be adopted on an industrial scale. © 2022 Society of Chemical Industry (SCI).

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Section: Modeling Design and Tac Calculationmentioning

confidence: 99%

Performance improvement potential of integrated process of urea‐adduction and distillation for separation of 1‐octene from F–T synthetic products

Ren

Liu²,

et al. 2022

J of Chemical Tech & Biotech

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“…Fischer-Tropsch wastewater (FTWW) consists mainly of alcohols, ketones, and organic acids, which results in a high organic content. For instance, for every ton of synthetic liquid fuel produced, about 1.3 tons of FTWW is generated [8,9]. This significant wastewater generation poses a serious environmental threat to both terrestrial and aquatic ecosystems and has, therefore, become a major concern to environmental management and monitoring agencies worldwide.…”

Section: Introductionmentioning

confidence: 99%

Insights into the Physicochemical Parameters, Microbial Community Structure, and Functional Variations in Biodegradation of N-Alkane Derivatives from Fischer–Tropsch Wastewater

Koloti,

Nkuna,

Matambo

2023

Water

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This study provides a theoretical baseline on the application of chemical and microbiological indicators as rapid system performance monitoring tools that will allow for timely corrective measures to maintain and improve the bioremediation performance of the Fischer–Tropsch wastewater (FTWW) treatment plants. Microorganisms isolated from the sediments and water samples collected from site 1 of Blesbokspruit wetland exhibited the highest biodegradation efficiency of up to 98.04% and 92.85%, respectively, in 96 h reaction time using batch culture media spiked with 300 ppm short chain n-alkane derivatives. The highest COD reduction rate was observed during the first 24 h of biodegradation, and it steadily declined thereafter. The decline in pH from 7.0 to 6.3 was observed in the 96 h reaction time and was attributed to the production of acidic secondary metabolites and the entrapment of the produced CO2 within the batch media. The ORP also declined from the aerobic zone to the anaerobic zone within 24 h (day 1) reaction time. The EC and TDS results were also indicative of the rate of consumption of essential nutrients during the biodegradation process, which could be related to biochemical reactions involved in biodegradation of n-alkane derivatives. Proteobacteria and Firmicutes were the prevalent phyla during the biodegradation of the n-alkane derivatives. Enterococcus and Escherichia genera were more dominant on most days of biodegradation, therefore, indicating that these genera were actively involved in the biodegradation process of the n-alkane derivatives. These genera displayed a positive correlation with EC, ORP, pH and TDS in the four days of biodegradation for batch cultures inoculated with microorganisms from the water and sediments samples collected from the Blesbokspruit wetland. The results obtained demonstrated that physicochemical and microbiological indices can be used to infer the biodegradation rates, patterns and system operations in FTWW bioremediation.

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MnFe2O4/MoS2 catalyst used for ozonation: optimization and mechanism analysis of phenolic wastewater treatment

Wu,

Han,

Guo

et al. 2024

Environ Sci Pollut Res

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Fischer–Tropsch synthetic wastewater treatment with Fe/Mn@CH: Catalytic ozonation and process evaluation

Cited by 20 publications

References 38 publications

Performance improvement potential of integrated process of urea‐adduction and distillation for separation of 1‐octene from F–T synthetic products

Performance improvement potential of integrated process of urea‐adduction and distillation for separation of 1‐octene from F–T synthetic products

Insights into the Physicochemical Parameters, Microbial Community Structure, and Functional Variations in Biodegradation of N-Alkane Derivatives from Fischer–Tropsch Wastewater

MnFe2O4/MoS2 catalyst used for ozonation: optimization and mechanism analysis of phenolic wastewater treatment

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