Biodegradation of n -hexane as single pollutant and in a mixture with BTEX in a scoria/compost-based biofilter

Amin, Mohammad Mehdi; Rahimi, Amir; Bina, Bijan; Nourmoradi, Heshmatollah; Hassanvand, Mohammad Sadegh; Mohammadi‐Moghadam, Fazel; Norouzi, Samira; Heidari, Mohsen

doi:10.1016/j.psep.2017.03.019

Cited by 33 publications

(8 citation statements)

References 30 publications

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“…Environment and human health are seriously damaged by VOCs because most of them are toxic and can cause serious environmental problems such as greenhouse effect, photochemical smog, stratospheric ozone depletion and the like . n ‐Hexane possesses a diameter of 4.3 Å and is a typical non‐polar aliphatic VOC . In industry, it is widely used not only in the formulation of glues for shoes, leather products, and roofing, but also as organic solvent for exacting cooking oils from seeds, for cleansing and degreasing a variety of items, and in textile manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Effect from Mechanical Stirring Time and Speed on Adsorption Performance of ZIF‐90 for n‐Hexane

Huang

2018

Zeitschrift anorg allge chemie

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Zeolite imidazolate frameworks (ZIFs) represent a class of metal-organic frameworks (MOFs) for various potential applications due to their outstanding properties. However, to date, the creation of nanoframes with tunable structure faces a challenge. Herein, we develop a facile and efficient physical method that allows the preparation of ZIF-90 with controllable surface area. In this study, the effect of various stirring time and speed in the acceleration of the precursor

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Section: Introductionmentioning

confidence: 99%

Effect from Mechanical Stirring Time and Speed on Adsorption Performance of ZIF‐90 for n‐Hexane

Huang

2018

Zeitschrift anorg allge chemie

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“…As an example, enhanced input loads of n-hexane and benzene in a ternary mixture of methanol, n-hexane, and benzene had no significant effect on methanol removal efficiency (>95%), while the removal efficiency of n-hexane was severely affected by changes in methanol loads (drop from 75% to 32%) [94,95]. Comparable results were observed for mixtures of BTEX and n-hexane or benzene and n-hexane, where the removal efficiency of n-hexane as a very lipophilic compound decreased in presence of these aromatic compounds [96,97].…”

Section: Limitation In Degradation Of Voc Mixturesmentioning

confidence: 87%

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Dobslaw

Ortlinghaus²

2020

Sustainability

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International contracts to restrict emissions of climate-relevant gases, and thus global warming, also require a critical reconsideration of technologies for treating municipal, commercial, industrial, and agricultural waste gas emissions. A change from energy- and resource-intensive technologies, such as thermal post-combustion and adsorption, as well to low-emission technologies with high energy and resource efficiency, becomes mandatory. Biological processes already meet these requirements, but show restrictions in case of treatment of complex volatile organic compound (VOC) mixtures and space demand. Innovative approaches combining advanced oxidation and biofiltration processes seem to be a solution. In this review, biological processes, both as stand-alone technology and in combination with advanced oxidation processes, were critically evaluated in regard to technical, economical, and climate policy aspects, as well as present limitations and corresponding solutions to overcome these restrictions.

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“…They could also be determined through batch flask experiments . However, it has been proposed to estimate the kinetic parameters based on the experimental data, which obtained from appropriate biofiltration systems . In a study on the mathematical modeling of ethyl acetate and toluene biofiltration, unknown Haldane‐type kinetic parameters of the model were calibrated using experimental data from lab‐scale biofilters treating the pollutants .…”

Section: Introductionmentioning

confidence: 99%

“…In a study on the mathematical modeling of ethyl acetate and toluene biofiltration, unknown Haldane‐type kinetic parameters of the model were calibrated using experimental data from lab‐scale biofilters treating the pollutants . Amin et al also analyzed the experimental data obtained by a lab‐scale biofilter to drive unknown parameters of a competitive inhibition kinetic for the biofiltration of n‐hexane in the presence of mono‐aromatic hydrocarbons. Therefore, it must be stressed the necessity to calibrate each model based on specific experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling and sensitivity analysis of xylene removal in a scoria‐compost biofilter

Heidari

Rahimi

Amin

et al. 2019

Env Prog and Sustain Energy

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Mathematical modeling of biofiltration systems improves our understanding and design of such complex systems. This study focused on the theoretical and technical aspects of the modeling of xylene biofiltration in the absence and presence of a nonionic surfactant. In this regard, a mathematical model was developed based on mass balance principles in gas and biofilm phases. The developed model was calibrated and validated using the experimental data obtained from a lab‐scale scoria‐compost biofilter, which operated for 151 days in the absence and presence of Tween‐20, a nonionic surfactant. First, the model was calibrated using the experimental data obtained at empty bed retention time (EBRT) of 90 s and then validated with the data obtained at two other EBRTs. The biofilter provided maximum elimination capacities (ECmax) of 97.5 and 93.6 g m−3 hr−1, respectively, in the absence and presence of the surfactant at EBRT of 90 s. The corresponding predicted ECmax values were 99.9 and 95.7 g m−3 hr−1, respectively. Both model output and experimental data revealed that the nonionic surfactant improved the performance of the biofilter at moderate inlet loading rates. Various statistical measures, including fractional bias, average absolute relative error, and coefficient of determination (R2), showed good agreement between experimental data and estimated model predictions. Sensitivity analysis of the model showed that the specific surface area and bioreactor length affected strongly the results of the model. In general, the results of this study would in turn form the design basis for engineering purposes.

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Biodegradation of n -hexane as single pollutant and in a mixture with BTEX in a scoria/compost-based biofilter

Cited by 33 publications

References 30 publications

Effect from Mechanical Stirring Time and Speed on Adsorption Performance of ZIF‐90 for n‐Hexane

Effect from Mechanical Stirring Time and Speed on Adsorption Performance of ZIF‐90 for n‐Hexane

Biological Waste Air and Waste Gas Treatment: Overview, Challenges, Operational Efficiency, and Current Trends

Mathematical modeling and sensitivity analysis of xylene removal in a scoria‐compost biofilter

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