US20140102987A1 - Plant based material useful in adsorbing petroleum products, processes for making these, and uses thereof - Google Patents
Plant based material useful in adsorbing petroleum products, processes for making these, and uses thereof Download PDFInfo
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- US20140102987A1 US20140102987A1 US13/893,653 US201313893653A US2014102987A1 US 20140102987 A1 US20140102987 A1 US 20140102987A1 US 201313893653 A US201313893653 A US 201313893653A US 2014102987 A1 US2014102987 A1 US 2014102987A1
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- petroleum
- plant based
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 239000003209 petroleum derivative Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 12
- 235000019737 Animal fat Nutrition 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000003921 oil Substances 0.000 claims description 31
- 150000002632 lipids Chemical class 0.000 claims description 30
- 241000196324 Embryophyta Species 0.000 claims description 25
- 239000002904 solvent Substances 0.000 claims description 23
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 12
- 239000010779 crude oil Substances 0.000 claims description 10
- 241000233805 Phoenix Species 0.000 claims description 9
- 235000010659 Phoenix dactylifera Nutrition 0.000 claims description 9
- 239000003208 petroleum Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- 239000010705 motor oil Substances 0.000 claims description 2
- 150000007824 aliphatic compounds Chemical class 0.000 claims 2
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000000576 coating method Methods 0.000 abstract description 13
- 239000012188 paraffin wax Substances 0.000 abstract description 5
- 239000003925 fat Substances 0.000 description 11
- 235000019197 fats Nutrition 0.000 description 11
- 241001465754 Metazoa Species 0.000 description 9
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- 150000004665 fatty acids Chemical class 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000009966 trimming Methods 0.000 description 6
- 239000003463 adsorbent Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000012259 ether extract Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- -1 i.e. Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 2
- 235000013162 Cocos nucifera Nutrition 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 235000021314 Palmitic acid Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000944 Soxhlet extraction Methods 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002035 hexane extract Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 235000019645 odor Nutrition 0.000 description 2
- 239000011236 particulate material Substances 0.000 description 2
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 2
- 239000001131 (4R)-4-methylnonanoic acid Substances 0.000 description 1
- WQTZCQIRCYSUBQ-UHFFFAOYSA-N 4-Methylnonanoic acid Chemical compound CCCCCC(C)CCC(O)=O WQTZCQIRCYSUBQ-UHFFFAOYSA-N 0.000 description 1
- OQJIJSSEWMIDCE-UHFFFAOYSA-N 4-ethyloctanoic acid;4-methyloctanoic acid Chemical compound CCCCC(C)CCC(O)=O.CCCCC(CC)CCC(O)=O OQJIJSSEWMIDCE-UHFFFAOYSA-N 0.000 description 1
- 235000012137 Atriplex confertifolia Nutrition 0.000 description 1
- 244000266618 Atriplex confertifolia Species 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002389 environmental scanning electron microscopy Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N glycerol group Chemical group OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000002972 grafting catalyst Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 150000002402 hexoses Chemical class 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N linoleic acid group Chemical group C(CCCCCCC\C=C/C\C=C/CCCCC)(=O)O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical class CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-N palmitic acid group Chemical group C(CCCCCCCCCCCCCCC)(=O)O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000002972 pentoses Chemical class 0.000 description 1
- 239000013520 petroleum-based product Substances 0.000 description 1
- 150000002995 phenylpropanoid derivatives Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000002316 solid fats Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003626 triacylglycerols Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28019—Spherical, ellipsoidal or cylindrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/305—Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3291—Characterised by the shape of the carrier, the coating or the obtained coated product
- B01J20/3293—Coatings on a core, the core being particle or fiber shaped, e.g. encapsulated particles, coated fibers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/10—Devices for removing the material from the surface
- E02B15/101—Means floating loosely on the water absorbing the oil
Definitions
- This invention relates to completely biodegradable, hydrophobic, oleophilic plant based materials which are useful in adsorption of crude oil, and other petroleum products, especially from spills in water. More particularly, it relates to plant particles (date palm tree particles, e.g.), which have had their normally hydrophilic surfaces modified by non-paraffin lipid materials, resulting in hydrophobic particles which are oleophilic and selectively adsorb oil and repel water.
- Plant based materials are well known as oil adsorbing materials. Their efficacy, however, is hindered when the oil material to be adsorbed is combined with water.
- the chemical composition of plant materials is such that they are hydrophilic, and will adsorb water more readily than petroleum products. Further, when these plant materials adsorb water, they become heavy and sink.
- Banerjee et al. fatty acids are grafted onto plant materials, using H 2 SO 4 as the catalyst, whereas the invention, as will be seen herein, involves physical coating without the use of a grafting catalyst.
- the preferred coating materials of Banerjee et al. are low molecular weight lipids which are liquid at room temperature, as compared to the preferred materials of the invention, which are animal fats and solid at room temperature. Also, Banerjee et al.
- U.S. Pat. No. 5,492,881 to Diamond describes various products which can be sued to absorb hydrocarbon, such as oil. Cellulose materials are treated to render products hydrophobic and oleophilic. Options include the incorporation of microbes, a fire retardant, low ash content (1%), and incorporation of paraffin. Removal of spilled petroleum products using bacteria is an inherently slow process because of the biological reaction. Such is not a feature of the present invention.
- U.S. Pat. No. 4,072,794 to Tomita et al. coats fibers with paraffin, and also includes latex in the composition. Latex is not biodegradable, in contrast to the invention described herein.
- U.S. Pat. No. 4,172,039 to Akiyama describes use of coir dust, i.e., material from coconut fruit.
- Coir dust has different porosity from the materials of the invention.
- the difference in composition requires the use of a containment means in using the coir based product, in contrast to the invention described herein.
- the invention relates to plant materials, coated directly with lipid materials, to render them hydrophobic, and useful as adsorbents for oil and petroleum products, both in the presence of water, and when “dry.”
- the present invention utilizes inexpensive materials, e.g., trimmings or other waste materials, from plant sources.
- the plant source is the date palm tree.
- the trunks of date palm trees are composed of large amounts of lignocellulose, which is itself composed of lignin, cellulose, and hemi-celluloses.
- the building blocks of lignin are phenyl propanoid units, while hexoses and pentoses make up cellulose and hemi-cellulose.
- the biopolymers have strong affinity for water molecules. When water attaches to these polymers via hydrogen bonding, the materials become very poor adsorbents for oil and other petroleum products.
- the particles of the invention are made from plant materials, preferably date palm tree derived materials, e.g., trimmings or other waste products from the tree. These trimmings are referred to by one author as “petiole” or as “karab” in Arabic. See Agoudjil, et al., Energy and Buildings, 43:491-497 (2011), incorporated by reference. Alternatively, one may refer to the petioles of the tree; Material from the trunk are also preferred, although “karab” will be exemplified herein.
- the karab is gathered, it is treated to remove any moisture therefrom. Preferably, this is done by drying the material in an oven at a temperature sufficient to drive off the water, but insufficient to damage or to char the lignocellulose. Once dried, the material is treated to yield particles of the desired size. These may range from about 0.1 to about 10 mm; however, it has been found that producing particles with an average diameter of less than 1 mm greatly increases the cost of manufacture, while also increasing the available surface area for oil adsorption. In balancing cost and surface area for adsorption, diameters of from 1-5 mm are preferred.
- the particle compositions contain from about 10% to about 30% ash.
- the size of the particles is important because by decreasing the average diameter, the surface area of a given sample of particles increases, which facilitates oil uptake capacity.
- ⁇ is fluid density
- ⁇ is surface tension of the fluid
- ⁇ is the contact angle between the particle surface and the fluid
- r is the capillary radius of the pore.
- solvent extracted lipids is preferred, because when long chain, molecules, which are semi-solid in nature are used, even in pure, dissolved form, the process of coating the particles can result in non-homogeneous, non-uniform products, resulting from the uneven process of solidification during the coating.
- an advantage of using solvent extraction is the ability to control the removal of the solvent, with pure uniform application of the extracted lipids.
- the raw fat used may be any available animal fat. Bovine, ovine, and other source animals may be used.
- Animal fat was used as the source of the materials used to coat the particles.
- Samples of the animal fat were placed in the thimbles of two different Soxhlet extractors with two different solvents and two parallel extractions were carried out.
- To elaborate i.e., either hexane or petroleum ether, was placed in a still pot of a Soxhlet setup, in a manner well known to one of ordinary skill in the art. This resulted in selected extraction of lipids from the solid animal fat, into the liquid solvents. This was continued for different lengths of time (up to four hours) to obtain saturated solutions for optimum coating.
- Solvents into which fats were dissolved were separated from the two different (parallel) Soxhlet extractions, and portions of the particulate trimmings were mixed together with each of the solvents in two different Rotavap vessels. Sufficient solvent was used to completely submerge the particles in two separate rotary evaporators (Rotavap) device. The materials were mixed this way so that particles could be uniformly coated, with the condenser of the device operating at a start temperature below that of the boiling point of the solvent so as to avoid premature vaporization.
- the resulting coated particles were hydrophobic, which was shown by placing 3 g of coated particles, and 3 g of uncoated particles, in separate, equal portions of water. After ten minutes, the uncoated particles had adsorbed the water, while the coated particles did not. Also, they remained afloat with minimal or no adsorption of water. Similar tests were carried out with stirring of the water for five minutes. The results were promising. Similar experiments were carried out for overnight in stagnant water to test water repellency. These tests also showed very encouraging results.
- the plant material particles preferably have a diameter of from about 1 mm to about 5 mm, and are preferably from date palm trees.
- the petiole or karab of the date palm tree is the preferred source of the particles, but material such as waste from the tree trunks may also be used.
- the lipids used to coat the particles are obtained by dissolving animal fats into a solvent, such as petroleum ether. While pure, liquid lipids may be used, it is preferred to use lipids dissolved in a solvent because, upon evaporation of the solvent, the lipids coat the particles more completely and evenly than pure lipids do.
- a solvent such as petroleum ether.
- the lipids When the lipids are obtained from dissolved animal fats, the resulting product will not be a “pure” lipid, but a mixture of different triglycerides.
- a triglyceride always contain a glycerol moiety, having bound there to three fatty acid molecules. These molecules may be the same, or different.
- Fatty acid composition of different animal fats are well known, as evidenced by, e.g., Hilditch, et al, “Sheep Body Fats,” (1941), incorporated by reference.
- the fatty acids are saturated, and unsaturated hexadecanoic and octadecanoic acids, such as palmitic, oleic, stearic, and linoleic acids.
- the compositions will vary from animal to animal, but the triglyceride molecules will generally contain at least 50 and preferably at least 55 carbon atoms. Also see Weber, et al, Fuel 94: 262-269 (2012), incorporated by reference.
- containment means are not required; rather they serve as a convenience to the user.
- containment means are not required; rather they serve as a convenience to the user.
- the distinction is important because other plant based materials, due to their porosity and other facts must be placed in containment means, as they are not buoyant.
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- General Engineering & Computer Science (AREA)
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/893,653 US20140102987A1 (en) | 2012-10-17 | 2013-05-14 | Plant based material useful in adsorbing petroleum products, processes for making these, and uses thereof |
US14/708,659 US9592488B2 (en) | 2012-10-17 | 2015-05-11 | Process for preparing lipid coated particles of plant material |
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US201261714906P | 2012-10-17 | 2012-10-17 | |
US13/893,653 US20140102987A1 (en) | 2012-10-17 | 2013-05-14 | Plant based material useful in adsorbing petroleum products, processes for making these, and uses thereof |
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US13/893,653 Abandoned US20140102987A1 (en) | 2012-10-17 | 2013-05-14 | Plant based material useful in adsorbing petroleum products, processes for making these, and uses thereof |
US14/708,659 Active 2033-05-30 US9592488B2 (en) | 2012-10-17 | 2015-05-11 | Process for preparing lipid coated particles of plant material |
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US14/708,659 Active 2033-05-30 US9592488B2 (en) | 2012-10-17 | 2015-05-11 | Process for preparing lipid coated particles of plant material |
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US (2) | US20140102987A1 (enrdf_load_stackoverflow) |
EP (1) | EP2908943B1 (enrdf_load_stackoverflow) |
CN (1) | CN104812478B (enrdf_load_stackoverflow) |
IN (1) | IN2015DN01683A (enrdf_load_stackoverflow) |
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US10240411B1 (en) | 2018-03-22 | 2019-03-26 | Saudi Arabian Oil Company | Trimodal hybrid loss prevention material (LPM) for preventative and curative loss control |
US10259982B2 (en) | 2016-07-12 | 2019-04-16 | Saudi Arabian Oil Company | Date seed-based multi-modal particulate admixture for moderate to severe loss control |
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US11254851B2 (en) | 2020-06-25 | 2022-02-22 | Saudi Arabian Oil Company | Vulcanized rubber and date tree based lost circulation material (LCM) blend |
US11434404B2 (en) | 2016-04-13 | 2022-09-06 | Saudi Arabian Oil Company | Rapidly dehydrating lost circulation material (LCM) |
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2013
- 2013-05-14 IN IN1683DEN2015 patent/IN2015DN01683A/en unknown
- 2013-05-14 EP EP13726927.0A patent/EP2908943B1/en not_active Not-in-force
- 2013-05-14 CN CN201380054296.9A patent/CN104812478B/zh not_active Expired - Fee Related
- 2013-05-14 US US13/893,653 patent/US20140102987A1/en not_active Abandoned
- 2013-05-14 WO PCT/US2013/040893 patent/WO2014062237A1/en active Application Filing
-
2015
- 2015-05-11 US US14/708,659 patent/US9592488B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
CN104812478B (zh) | 2017-10-13 |
WO2014062237A1 (en) | 2014-04-24 |
CN104812478A (zh) | 2015-07-29 |
IN2015DN01683A (enrdf_load_stackoverflow) | 2015-07-03 |
EP2908943B1 (en) | 2018-09-05 |
US9592488B2 (en) | 2017-03-14 |
EP2908943A1 (en) | 2015-08-26 |
US20150251156A1 (en) | 2015-09-10 |
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