DOI: 10.1016/j.watres.2019.01.030
Scopus记录号: 2-s2.0-85061234359
论文题名: Application of iron-crosslinked sodium alginate for efficient sulfide control and reduction of oilfield produced water
作者: Wu J. ; Zeng R.J. ; Zhang F. ; Yuan Z.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 12
结束页码: 20
语种: 英语
英文关键词: Biopluging
; FeS
; Iron-crosslinked sodium alginate
; Oilfield produced water reduction
; Sulfide control
; Volume sweep efficiency
Scopus关键词: Chemicals removal (water treatment)
; Flow of water
; Iron
; Iron compounds
; Oil fields
; Produced Water
; Sand
; Sodium alginate
; Viscosity
; Biopluging
; Crosslinked
; Environmental challenges
; Heterogeneous rocks
; Oilfield produced waters
; Sulfate reducing bacteria
; Sweep efficiency
; Viscous fingering
; Sulfur compounds
; alginic acid
; iron
; iron nanoparticle
; sulfide
; water
; aqueous solution
; chemical compound
; efficiency measurement
; experimental study
; nanoparticle
; oil field
; pollution control
; reduction
; sulfate-reducing bacterium
; sulfide
; theoretical study
; water treatment
; aqueous solution
; Article
; chemical analysis
; controlled study
; cross linking
; Desulfovibrio vulgaris
; field emission scanning electron microscopy
; nonhuman
; oil field
; oil industry
; precipitation
; priority journal
; reduction (chemistry)
; shear rate
; surface property
; viscosity
; waste water management
; water supply
英文摘要: Sulfide production and oilfield produced water are considered as environmental challenges in the oil industry. Iron-crosslinked sodium alginate (SA–Fe) was used to address these problems simultaneously. A pair of columns containing one coarse-sand column and one fine-sand column was designed to simulate heterogeneous rock layers and evaluate the plugging effect of SA–Fe. Generation of FeS precipitates led to decreases of sulfide in the gas phase by 45 ± 3.2% and in the aqueous solution by 75 ± 4.7%. The generated FeS nanoparticles and sulfate-reducing bacteria attached on the surface of the sand in the coarse-sand column to plug the pores that caused the water flow to switch from the coarse-sand column to the fine-sand column. Analysis of FeS distribution indicated that the column inlet was effectively plugged by FeS. The theoretical amount of FeS (1.19 mmol) that was determined based on sulfur balance was nearly equal to the actual amount of FeS precipitation (1.11 mmol). Additionally, water viscosity increased from 0.9 mPa s to 342 mPa s, induced by the collapse of SA–Fe gels, which reduced the difference in viscosity between oil and water to avoid viscous fingering. As a consequence, the oil recovery improved from 46 ± 2.6% to 85 ± 3.0% in the sand column oil-saturated recovery experiment, which contributed to the decrease of oil-normalized produced water from 70.1 ± 4.0 to 37.5 ± 1.3 mL water/mL oil. Therefore, this study shows that SA–Fe exhibits potential for application in controlling sulfide as well as reducing produced water. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121966
Appears in Collections: 气候变化事实与影响
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作者单位: Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China; CAS Key Laboratory for Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China; Advanced Water Management Centre, The University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
Recommended Citation:
Wu J.,Zeng R.J.,Zhang F.,et al. Application of iron-crosslinked sodium alginate for efficient sulfide control and reduction of oilfield produced water[J]. Water Research,2019-01-01