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[ subject:"Environmental science." ]
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Biopolymers as Treatment Agents for ...
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Ameh, Thelma.
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Biopolymers as Treatment Agents for Crude Oil-Contaminated Seawater.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Biopolymers as Treatment Agents for Crude Oil-Contaminated Seawater./
作者:
Ameh, Thelma.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:
83 p.
附註:
Source: Masters Abstracts International, Volume: 56-06.
Contained By:
Masters Abstracts International56-06(E).
標題:
Environmental science. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10289179
ISBN:
9780355181999
Biopolymers as Treatment Agents for Crude Oil-Contaminated Seawater.
Ameh, Thelma.
Biopolymers as Treatment Agents for Crude Oil-Contaminated Seawater.
- Ann Arbor : ProQuest Dissertations & Theses, 2017 - 83 p.
Source: Masters Abstracts International, Volume: 56-06.
Thesis (M.S.)--Tarleton State University, 2017.
The removal of crude oil spills from the marine environment is a problem of environmental concern that requires technical knowledge and skill for the recovery of spilled material. Mechanical, chemical and biological techniques have been historically used to recover crude oil spills from coastal waters, however such processes have proven to be cost-demanding. This feasibility study employed the use of plant-derived adsorbent materials for cleaning crude oil spills because they offer the advantages of affordability, biodegradability, hydrophobicity and high absorption rate. Biopolymers employed were derived from fenugreek seeds (Trigonella foenum-graecum), psyllium husk (Plantago spp.), okra fruit (Abelmoschus esculentus) and tamarind seed (Tamarindus indica)..
ISBN: 9780355181999Subjects--Topical Terms:
677245
Environmental science.
Biopolymers as Treatment Agents for Crude Oil-Contaminated Seawater.
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The removal of crude oil spills from the marine environment is a problem of environmental concern that requires technical knowledge and skill for the recovery of spilled material. Mechanical, chemical and biological techniques have been historically used to recover crude oil spills from coastal waters, however such processes have proven to be cost-demanding. This feasibility study employed the use of plant-derived adsorbent materials for cleaning crude oil spills because they offer the advantages of affordability, biodegradability, hydrophobicity and high absorption rate. Biopolymers employed were derived from fenugreek seeds (Trigonella foenum-graecum), psyllium husk (Plantago spp.), okra fruit (Abelmoschus esculentus) and tamarind seed (Tamarindus indica)..
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Laboratory prepared seawater samples were used for experiments which employed aqueous polymer treatments in 5% crude oil spiked seawater samples. The treatment groups employed all four polymers individually, as well as six double-polymer combinations in 12 concentrations that ranged from 0.10 g/L to 12.00 g/L. Experimental controls groups contained 5% crude oil without polymer treatments. Experimental setups were left for a 24-hour period after which the U.S.EPA Method 1664B was used to separate and recover crude oil from the contaminated seawater samples with n-hexane as the extraction solvent. Fenugreek-okra combination treatment achieved about 50% crude oil removal efficiency at a concentration of 0.6 g/L while psyllium treatment removed about 52% crude oil from water at 9.0 g/L. Comparison to polyacrylamide, which is a commercial polymer, proved that biopolymers have a potential in crude oil recovery applications.
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Comparative analysis of crude oil removal in closed and open systems were done to determine the effect of evaporation on the polymer treatment process. The control group had an efficiency range of 6 -- 14% in the closed system, while 26% was achieved in the open-beaker experiment. While the psyllium polymer treatment achieved a similar range of crude oil removal between 60 -- 70% in both the closed and open system; the performance of fenugreek-okra combination dropped to 18 -22% range in the closed system and 40% efficiency in the open system.
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Gas chromatographic analysis of the untreated and treated crude oil detected the presence of straight chain hydrocarbons which had retention times corresponding to nC12 -- nC17 alkane standards. The peak responses of psyllium treated crude oil consistently decreased with increasing concentration of the treatment when compared with peak responses of the control, an indication that the concentration of hydrocarbons in the polymer treated crude oil was impacted by the treatment.
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