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MODELING OF DYNAMIC (COLUMN) ADSORPTION AND BREAKTHROUGH CURVES IN AN ORGANOBENTONITE BED

Field of Science:Engineering (miscellaneous)
National field of science (HAC):01.02.02 — Dynamics and strength of machines, instruments and equipment01.02.03 — Mechanics of soils and rocks01.02.04 — Mechanics of deformable solids01.02.05 — Fluid and gas mechanics01.04.01 — Instruments and methods of experimental physics01.04.04 — Physical electronics01.04.10 — Semiconductor physics04.00.10 — Geotechnology (open-pit, underground and construction)04.00.04 — Hydrogeology and engineering geology04.00.09 — Mine surveying04.00.11 — Well drilling and development technology04.00.12 — Construction and operation of oil and gas pipelines, bases and storage facilities04.00.13 — Development and operation of oil and gas fields04.00.14 — Mineral processing04.00.15 — Technology and engineering of geological exploration04.00.16 — Mining machinery04.00.17 — Physical processes in mining05.01.01 — Engineering geometry and computer graphics. Audio and video technologies05.01.02 — Systems analysis, control and information processing05.01.04 — Mathematical and software support of computers, complexes and computer networks05.01.05 — Information protection methods and systems. Information security05.05.04 — Industrial heat power engineering05.02.03 — Technological machines. Robots, mechatronics and robotic systems05.01.08 — Automation and control of technological processes and productions05.01.10 — Information retrieval systems and processes05.01.11 — Digital technologies and artificial intelligence05.02.02 — Theory of mechanisms and machines. Machine science and machine parts05.02.04 — Standardization and product quality management05.02.05 — Technologies and processes of mechanical and physico-technical machining. 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ARTICLE ANNOTATION

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This study investigates the dynamic adsorption of petroleum hydrocarbons in an organobentonite adsorption bed for the effective treatment of oil-contaminated water. Experimental investigations were carried out in a continuous-flow fixed-bed column system. The effects of key operational parameters, including bed height, volumetric flow rate, and initial pollutant concentration, on the breakthrough behavior and adsorption performance were comprehensively evaluated. Based on the experimental results, breakthrough curves were constructed and the mass-transfer characteristics of the adsorption process were analyzed. To describe the adsorption dynamics and predict column performance, the Thomas, Yoon–Nelson, Adams–Bohart, and BDST (Bed Depth Service Time) models were applied. These models enabled the determination of the dynamic adsorption capacity of organobentonite, service time of the adsorption bed, and optimal operating conditions of the fixed-bed system. The results demonstrated that increasing the bed height prolonged the breakthrough time and enhanced pollutant removal efficiency, whereas increasing the volumetric flow rate reduced the contact time between the adsorbate and adsorbent, resulting in lower adsorption performance. The maximum dynamic adsorption capacity of organobentonite was determined to be 57 mg/g. The optimal empty bed contact time (EBCT) was found to be 20 minutes, while the optimal filtration velocity was established at 5 m/h. The findings indicate that organobentonite is a promising adsorbent for the treatment of petroleum-contaminated wastewater and provide a scientific basis for the design, optimization, and scale-up of industrial adsorption systems.

AUTHORS

Science ID: FQD-1125-0066

Science ID: MQD-0526-0330

Science ID: MQD-0626-0177

Tags

# model# dynamic# adsorption# breakthrough# curve# thomas# yoon–nelson# bdst# ebct# organobentonit

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References

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