Stirring Enhances Removal of Oil by Kapok Fiber

The natural hollow fiber, namely kapok, has been studied for the removal of oil, particularly in the area of oil spill clean-up. The hydrophobic nature of the natural absorbent has been demonstrated to exhibit (or show potential to exhibit) excellent oil absorption properties. Kapok fiber is inexpensive, readily available, very lightweight which makes it easy for transportation and its excellent buoyancy eases retrieval. Reusability of the material up to 15 cycles has been reported and this supports its being environmental-friendly. This paper looks into the oil absorption capacity of raw kapok fiber that can be dramatically enhanced by the simple mechanism of stirring. The oil absorption capacity is greatly increased to more than 200 times the mass of kapok used, i.e., with stirring, 1 g of the kapok fiber is able to absorb at least 200 g of the oil (200 g/g) which in this case is the refined palm oil used for cooking. The paper also discusses the reasons for the improvement due to stirring. And as a natural agricultural product which is abundant, besides being environmental-friendly, its application would be a sustainable approach to control water pollution due to oil spills and industrial organic contaminants.

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Fabrication of Copolymer PMMA-BMA Oil Absorption Resin

Materials Science Forum ◽

10.4028/www.scientific.net/msf.848.120 ◽

2016 ◽

Vol 848 ◽

pp. 120-124

Author(s):

Lei Chen ◽

Yu Fei Tang ◽

Xu Liu ◽

Kang Zhao

Keyword(s):

Porous Material ◽

Dispersion Polymerization ◽

Retention Rate ◽

Crosslinking Agent ◽

Absorption Capacity ◽

Oil Absorption ◽

Absorption Properties ◽

Oil Retention ◽

Monomer Ratio ◽

Polyurethane Sponge

PMMA-BMA oil absorption resin was prepared by dispersion polymerization. Oil absorption properties were adjusted by changing the monomer ratio, content of initiator and crosslinking agent. Absorption capacity of porous material, which PMMA-BMA oil absorption resin adhesive in the polyurethane surface, was also investigated. The experimental results show that the best oil absorption ratio of PMMA-BMA copolymer resin was obtained when the MMA/BMA mole ratio was1:1.5, and the initiator and crosslinking agent was 0.4% and 0.35% of the copolymer resin respectively. The porous material was fabricated using the porous polyurethane sponge dipped in the liquid copolymer resin. The porous material resin can be reused since its low oil retention rate, and it can be used as absorption container of oil vapor.

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Highly Stretchable Fully Biomass Autonomic Self-Healing Polyamide Elastomers and Their Foam for Selective Oil Absorption

Polymers ◽

10.3390/polym13183089 ◽

2021 ◽

Vol 13 (18) ◽

pp. 3089

Author(s):

Palraj Ranganathan ◽

Chin-Wen Chen ◽

Syang-Peng Rwei

Keyword(s):

Oil Spills ◽

Polymeric Materials ◽

Absorption Capacity ◽

Molecular Structures ◽

Oil Absorption ◽

Self Healing ◽

Hydrophobic Properties ◽

One Pot ◽

Distinct Structure ◽

Foaming Process

Renewable polymers with self-healing ability, excellent elongation, hydrophobicity, and selective oil absorption attributes are of interest for an extensive range of applications, such as e-skin, soft robots, wearable devices, and cleaning up oil spills. Herein, two fully renewable eco-friendly polyamide (PA)-based self-healing elastomers (namely, PA36,IA, and PA36,36) were prepared by a facile and green one-pot melt polycondensation of itaconic acid (IA), PripolTM 1009, and PriamineTM 1075 monomers. The molecular structures of these PAs were analyzed by FITR, 1H NMR, and 13C NMR. The distinct structure of these PAs shows superior strain values (above 2300%) and high ambient temperature autonomous self-healing ability. Interestingly, the synthesized renewable PA36,36 showed zero water absorption values and hydrophobic properties with a contact angle of θ = 91o compared to the synthesized PA36,IA and other previously reported PAs. These excellent attributes are due to the low concentration of amide groups, the highly entangled main chains, the intermolecular diffusion, the manifold dangling chains, and the numerous reversible physical bonds within the renewable PAs. Furthermore, the hydrophobic properties may aid in the selective oil absorption of the PA36,36-based foam, for which PA36,36 foam is produced by the green supercritical carbon dioxide (scCO2) batch foaming process. The PA36,36 foam with a microporous cellular structure showed better absorption capacity and high stability in repeated use. Due to these advantages, these bio-based PAs have potential for the production of eco-friendly self-healing materials, superabsorbent foams, and other polymeric materials.

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The effect of sugar beet fiber addition on the chemical properties of tortilla chips

Sugar Industry ◽

10.36961/si13034 ◽

2012 ◽

pp. 385-388 ◽

Cited By ~ 1

Author(s):

Azadeh Saadatmandi ◽

Mohammad Elahi ◽

Reza Farhoosh ◽

Mahdi Karimi

Keyword(s):

Sugar Beet ◽

Water Absorption ◽

Protein Content ◽

Chemical Properties ◽

Absorption Capacity ◽

Ash Content ◽

Oil Absorption ◽

Water Absorption Capacity ◽

Overall Acceptability ◽

Tortilla Chips

The incorporation of sugar beet fiber (0–5%) to tortilla chips and the effects on the chemical and sensory properties were studied. Addition of sugar beet fiber (SBF) led to an increasing of water absorption capacity, ash content and darkness while lowering the protein content and oil absorption. Sensory evaluation showed that the overall acceptability of tortilla chips reduces if adding more than 2% SBF.

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Physico-Chemical Characteristics of Sapota (Chikoo) Powder based Value Added Pasta Product using Semolina (Suji) and Maida

Journal of AgriSearch ◽

10.21921/jas.v7i04.19394 ◽

2020 ◽

Vol 7 (04) ◽

Author(s):

SATYA NARAYAN SINGH ◽

RAJESH G BURBADE ◽

HITESH SANCHAVAT ◽

P S PANDIT

Keyword(s):

Bulk Density ◽

Crude Protein ◽

Water Solubility ◽

Value Added ◽

Absorption Capacity ◽

Oil Absorption ◽

Minimum Value ◽

Maximum Value ◽

Physico Chemical ◽

Specific Length

The cereals of today are more nutritious and healthful than ever before. Cereals processing is one of the oldest and the most essential part of all food technologies. Pasta products and noodles have been staple foods since ancient times in many countries all over the world. In this study pasta formulation was substituted with blending sapota powder in different proportions (4 levels i.e. 0%, 10%, 20%, 30%) into semolina and maida flour separately. Pasta products were prepared using eight different formulations and adding water (approximately 31% of total weight) in DOLLY pasta extruder machine. All the samples were evaluated for physical properties: specific length (mm/g), bulk density (kg/m3), specific density (kg/m3) and porosity (%); functional properties: water absorption index (%), water solubility index (%) and oil absorption capacity (ml/g) and nutritional compositions: moisture (%), crude protein (%), fat (%) and carbohydrate (%). Highest specific length 36.20 mm/g was observed for T5 treatment, low bulk density 368.10 kg/m3 was observed for T5 and highest porosity 9.24% was found for T1 treatment. The maximum WAI, WSI values 325.83%, 17.33% respectively was observed for T1 treatment and minimum value of oil absorption capacity 1.06 ml/g for T8 treatment. The moisture content of dried pasta products was found in the range of 6 to 7%. The maximum value of crude protein 13.07% was found for T5 and minimum value 8.81% for T4 treatments. The fat contents were varied from 1.02% to 1.28 %. The maximum value of carbohydrate was 76.20% for T1 and minimum value 65.41% for T8.

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Highly efficient reusable superhydrophobic sponge prepared by a facile, simple and cost effective biomimetic bonding method for oil absorption

Scientific Reports ◽

10.1038/s41598-021-91396-9 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Jiaqi Wang ◽

Yan Chen ◽

Qinyao Xu ◽

Miaomiao Cai ◽

Qian Shi ◽

...

Keyword(s):

Environmentally Friendly ◽

Absorption Capacity ◽

Oil Absorption ◽

Water Contact ◽

Water Separation ◽

Highly Efficient ◽

Study Results ◽

Different Types ◽

Modification Method ◽

Bonding Method

AbstractSuperhydrophobic sponges have considerable potential for oil/water separation. Most of the methods used for superhydrophobic modification of sponges require toxic or harmful solvents, which have the drawbacks of hazardous to environment, expensive, and complex to utilize. Moreover, the hydrophobic layer on the surface of sponge is often easily destroyed. In this paper, a highly efficient superhydrophobic sponge with excellent reusability was developed by using a facile, simple and environmentally friendly dopamine biomimetic bonding method. Different types of sponges, such as melamine, polyethylene or polyurethane sponge wastes, were used as raw materials to prepare superhydrophobic sponges, which possess the advantages of inexpensive and abundant. The effects of different dopamine polymerization time and different hydrophobic agent dosage on the hydrophobicity and oil absorption capacity of melamine sponges were optimized. The study results showed that the water contact angle of the superhydrophobic sponge could reach 153° with excellent organic solvent absorption capacity of 165.9 g/g. Furthermore, the superhydrophobic sponge retained approximately 92.1% of its initial absorption capacity after 35 reutilization cycles. More importantly, the dopamine biomimetic bonding superhydrophobic modification method can be used for different types of sponges. Therefore, a universally applicable, facile, simple and environmentally friendly superhydrophobic modification method for sponges was developed.

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Cellulose Nanofibrils/Xyloglucan Bio-Based Aerogels with Shape Recovery

Gels ◽

10.3390/gels7010005 ◽

2021 ◽

Vol 7 (1) ◽

pp. 5

Author(s):

Samuel Mandin ◽

Samuel Moreau ◽

Malika Talantikite ◽

Bruno Novalès ◽

Jean-Eudes Maigret ◽

...

Keyword(s):

Water Absorption ◽

Shape Recovery ◽

Cellulose Nanofibrils ◽

High Water ◽

Absorption Capacity ◽

Absorption Properties ◽

High Affinity ◽

High Water Absorption ◽

Freezing Procedure ◽

The Impact

Bio-based aerogels containing cellulose nanofibrils (CNFs) are promising materials due to the inherent physical properties of CNF. The high affinity of cellulose to plant hemicelluloses (xyloglucan, xylan, pectin) is also an opportunity to develop biomaterials with new properties. Here, we prepared aerogels from gelled dispersions of CNFs and xyloglucan (XG) at different ratios by using a freeze-casting procedure in unidirectional (UD) and non-directional (ND) manners. As showed by rheology analysis, CNF and CNF/XG dispersions behave as true gels. We investigated the impact of the freezing procedure and the gel’s composition on the microstructure and the water absorption properties. The introduction of XG greatly affects the microstructure of the aerogel from lamellar to cellular morphology. Bio-based aerogels showed high water absorption capacity with shape recovery after compression. The relation between morphology and aerogel compositions is discussed.

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Multiscale kapok/cellulose aerogels for oil absorption: The study on structure and oil absorption properties

Industrial Crops and Products ◽

10.1016/j.indcrop.2021.113902 ◽

2021 ◽

Vol 171 ◽

pp. 113902

Author(s):

Huimin Zhang ◽

Guangrui Zhang ◽

Hanqi Zhu ◽

Fumei Wang ◽

Guangbiao Xu ◽

...

Keyword(s):

Oil Absorption ◽

Absorption Properties

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Comparative studies of the physicochemical and functional properties of sweet potato (Ipomoea batatas L.) flour

Food Research ◽

10.26656/fr.2017.5(4).610 ◽

2021 ◽

Vol 5 (4) ◽

pp. 145-152

Author(s):

M. Hasmadi ◽

M. Merlynda ◽

A.H. Mansoor ◽

I. Salwa ◽

M.K. Zainol ◽

...

Keyword(s):

Sweet Potato ◽

Functional Properties ◽

Ipomoea Batatas ◽

Absorption Capacity ◽

Oil Absorption ◽

Potato Flour ◽

Foaming Capacity ◽

Sweet Potato Flour ◽

Physicochemical And Functional Properties ◽

Dietary Fibre Content

This study aimed to determine the proximate compositions and functional properties of sweet potato flour from different varieties cultivated in Sabah, Malaysia, namely Jepun, Kairot and Kaladi. The results showed that the moisture content of all flour samples was below 14%. The fat and protein content of Jepun sweet potato variety were significantly different (p<0.05) as compared with Kairot and Kaladi sweet potato varieties. The ash and dietary fibre content of Kairot sweet potato flour were higher (p<0.05) compared to Jepun and Kaladi flours. In addition, Kaladi sweet potato had the highest carbohydrate content (82%). There were significant differences (p<0.05) in the values of L*, a* and b* for all sweet potato flours. The Jepun sweet potato flour had the highest foaming capacity, water absorption capacity, oil absorption capacity, swelling power and viscosity. Rapid Visco analyser revealed that significant differences were observed for pasting parameters such as peak viscosity, trough viscosity, breakdown viscosity, final viscosity and setback viscosity. The gelatinisation properties showed that Kairot sweet potato flour had the highest onset temperature, conclusion temperature and enthalpy while Kaladi sweet potato flour had the highest peak temperature.

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