Effect of environmental factors on the effectiveness of ammoniated bagasse in wicking oil from contaminated wetlands  

作　　者：Seungjoon Chung Makram T.Suidan Albert D.Venosa 

机构地区：[1]Technology Development Center,Samsung Engineering Co.Ltd.,Suwon,Gyeonggi 443-823,South Korea [2]Faculty of Engineering and Architecture,American University of Beirut,Beirut 11072020,Lebanon [3]National Risk Management Research Laboratory,U.S.Environmental Protection Agency,Cincinnati,OH 45268,USA

出　　处：《Journal of Environmental Sciences》2012年第8期1371-1377,共7页环境科学学报（英文版）

基　　金：funding was provided by the U.S. Environmental Protection Agency under EP-C-05-056,WA 1-17

摘　　要：Ammoniated bagasse is a plant-derived organic sorbent that can be used for capturing oil and for supplying slow-release nutrients to oil-degrading microorganisms. We investigated the oil-wicking behavior of this sorbent under various conditions for its effectiveness in remediating oil-contaminated wetlands. Abiotic microcosms simulating a wetland environment were used to assess the influence of sand particle sizes （20x30 and 60x80 U.S. mesh）, degrees of oil saturation （25% and 75%）, water table levels （on top of the clean sand layer, oiled-sand layer, and sorbent layer）, and the presence of sorbent. Results indicated that oil wicking favors higher oil contamination, larger sand particle size, and low water coverage. Water coverage was the predominant factor limiting the effectiveness of sorbent. The most plausible explanation for this limitation was that sorbent captured more water than oil at higher water coverage.Ammoniated bagasse is a plant-derived organic sorbent that can be used for capturing oil and for supplying slow-release nutrients to oil-degrading microorganisms. We investigated the oil-wicking behavior of this sorbent under various conditions for its effectiveness in remediating oil-contaminated wetlands. Abiotic microcosms simulating a wetland environment were used to assess the influence of sand particle sizes （20x30 and 60x80 U.S. mesh）, degrees of oil saturation （25% and 75%）, water table levels （on top of the clean sand layer, oiled-sand layer, and sorbent layer）, and the presence of sorbent. Results indicated that oil wicking favors higher oil contamination, larger sand particle size, and low water coverage. Water coverage was the predominant factor limiting the effectiveness of sorbent. The most plausible explanation for this limitation was that sorbent captured more water than oil at higher water coverage.

关 键 词：crude oil WETLANDS SORBENT REMEDIATION sediment 

分 类 号：X53[环境科学与工程—环境工程]