DOI: 10.1016/j.marpolbul.2017.06.036
Scopus记录号: 2-s2.0-85021285060
论文题名: Regeneration of mesoporous silica aerogel for hydrocarbon adsorption and recovery
作者: Zhang C. ; Dai C. ; Zhang H. ; Peng S. ; Wei X. ; Hu Y.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 122, 期: 2018-01-02 起始页码: 129
结束页码: 138
语种: 英语
英文关键词: Adsorbents for oil spill clean-up
; Anaerobic regeneration
; Diesel oxidation
; Mesoporous silica aerogel regeneration
; Pore shrinkage
; Surface tension
Scopus关键词: Adsorbents
; Adsorption
; Desorption
; Gasoline
; Hydrocarbons
; Hydrophobicity
; Mesoporous materials
; Oil spills
; Oxidation
; Shrinkage
; Silica
; Silica gel
; Surface tension
; Adsorption capacities
; Adsorption efficiency
; Anaerobic regeneration
; Diesel oxidation
; Environmental-friendly
; Hydrocarbon adsorption
; Mesoporous Silica
; Pore shrinkage
; Aerogels
; diesel fuel
; gasoline
; hydrocarbon
; silicon dioxide
; toluene
; adsorption
; cleanup
; desorption
; oil spill
; oxidation
; porous medium
; shrinkage
; silica
; surface tension
; adsorption kinetics
; Article
; controlled study
; desorption
; hydrophobicity
; oil spill
; oxidation
; particle size
; surface tension
; adsorption
; chemical phenomena
; oil spill
; prevention and control
; Adsorption
; Hydrocarbons
; Hydrophobic and Hydrophilic Interactions
; Petroleum Pollution
; Silicon Dioxide
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Silica aerogel, with mesoporous structure and high hydrophobicity, is a promising adsorbent for oil spill clean-up. To make it economic and environmental-friendly, hydrocarbon desorption and silica aerogel regeneration were investigated. After hydrocarbon desorption at 80 °C, silica aerogel maintained its hydrophobicity. After toluene, petrol, and diesel desorption, shrinkage of mesopores (from 19.9 to 16.8, 13.5, and 13.4 nm) of silica aerogels occurred, causing decreased adsorption capacities (from 12.4, 11.2, and 13.6 to 12.0, 6.5, and 2.3 g/g). Low surface tension of petrol caused high stress on mesopores during its desorption, resulting in significant pore shrinkage. For diesel, its incomplete desorption and oxidation further hindered the regeneration. Therefore, diesel desorption was also conducted at 200 °C. Severe diesel oxidation occurred under aerobic condition and destroyed the mesopores. Under anaerobic condition, no diesel oxidation occurred and the decreases in pore size (to 13.2 nm) and adsorption efficiency (to 10.0 g/g) of regenerated silica aerogels were much less, compared with under aerobic condition. This study provided new insights on silica aerogel regeneration for oil spill clean-up. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/88135
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Department of Civil & Environmental Engineering, University of Houston, Houston, TX, United States; Laboratory of Environmental Protection in Water Transport Engineering, Tianjin Research Institute of Water Transport Engineering, Tianjing, China; Department of Chemistry, Texas Southern University, Houston, TX, United States
Recommended Citation:
Zhang C.,Dai C.,Zhang H.,et al. Regeneration of mesoporous silica aerogel for hydrocarbon adsorption and recovery[J]. Marine Pollution Bulletin,2017-01-01,122(2018-01-02)