Waste Solid Byproducts of Microalgae Oil Made into Green Energy

2015 ◽  
Vol 1120-1121 ◽  
pp. 208-211
Author(s):  
Shu Yao Tsai ◽  
Bing Fang Hwang ◽  
Tsung Chih Wu ◽  
Guan Yi Lu ◽  
Chun Ping Lin
Keyword(s):  
Food Additives ◽  
Waste Cooking Oil ◽  
Reduction Reaction ◽  
Green Energy ◽  
Engine Oil ◽  
Health Food ◽  
Waste Engine Oil ◽  
Waste Solid ◽  
Microalgae Oil ◽  
Catalyzed Reactions

Microalgae have rich oil production under full photosynthesis, which reaches over 50 mass%. In addition, microalgae oil contains the prolific cis-4,7,10,13,16,19-docosahexaenoic acid (DHA) that is usually refined for making health food or food additives. This study investigated Aurantiochytrium sp., which is a kind of microalgae, the oil of which is also refined for use in health food or food additives. The solid byproducts of Aurantiochytrium sp. oil are more than 20 mass%, discarded as rubbish. Fortunately, the solid byproducts have been found to contain a large amount of palmitic acid that exceeds more than 67 mass%, but it is difficult to transesterify from the solid byproducts of Aurantiochytrium sp. oil, such as the waste cooking oil or waste engine oil, which contain many impurities. Therefore, the sequences of saponification, reduction reaction, and acid-catalyzed reactions were conducted for the full process of transesterification in this study. Overall, we have successfully obtained more than 92 mass% transesterification rate from the solid byproducts of Aurantiochytrium sp. oil. The solid byproducts are waste turned into gold.

scholarly journals Tinjauan Terhadap Durabilitas Campuran Asphalt Concrete Wearing Course Menggunakan Aspal Tua Dengan Berbagai Bahan Peremaja

2020 ◽  
Vol 6 (2) ◽  
pp. 132
Author(s):  
Ratna Yuniarti ◽  
Desi Widianty ◽  
Rohani Rohani ◽  
Hasyim Hasyim
Keyword(s):  
Epoxy Resin ◽  
Asphalt Concrete ◽  
Water Immersion ◽  
Asphalt Mixture ◽  
Waste Cooking Oil ◽  
Engine Oil ◽  
Environment Impact ◽  
Cooking Oil ◽  
Waste Engine Oil ◽  
Aged Asphalt

Asphalt concrete wearing course is laid on the top of road pavement so that directly exposed to ultra violet light and other environment impact. The higher temperature at the pavement surface and exposure to atmospheric oxygen accelerated aging cause asphalt to stiffen and become brittle. This aging result decrease the binding of asphalt and aggregate leads various damage of pavement. The aged asphalt rejuvenated and recycled with rejuvenating agent has been developed to reduce the use of virgin material for road maintenance. This article aims to review durability of asphalt concrete wearing course using waste cooking oil, epoxy resin, kerosene and waste engine oil as asphalt rejuvenators. Aging asphalt was prepared by heating in an oven at 85 oC for 120 hours (long term oven aging). Durability was assessed from the value of Marshall immersion which represent the resistance of asphalt mixture at water immersion. Relation between Marshall immersion and voids in mix (VIM), voids in the mineral aggregate (VMA), voids filled with bitumen (VFB) and density are also evaluated. From the analysis, it can be concluded that the use of waste cooking oil, epoxy resin, kerosene and waste engine oil as asphalt rejuvenators increase the durability of asphalt mixture containing the aged asphalt.

scholarly journals Comparative Evaluation of Waste Cooking Oil and Waste Engine Oil Rejuvenated Asphalt Concrete Mixtures

2020 ◽  
Vol 45 (10) ◽  
pp. 7987-7997 ◽  
Author(s):  
Abdullah Al Mamun ◽  
H. I. Al-Abdul Wahhab ◽  
M. A. Dalhat
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Road Construction ◽  
Waste Cooking Oil ◽  
Engine Oil ◽  
Reclaimed Asphalt Pavement ◽  
Waste Oil ◽  
Reclaimed Asphalt ◽  
Cooking Oil ◽  
Waste Engine Oil

Abstract In road construction, different types of waste oil have been recommended to overcome the stiffening effect of reclaimed asphalt pavement content. However, the selection of an effective rejuvenator based on a comparative study can lead to using the resources more efficiently. In this study, waste cooking oil and waste engine oil are used to rejuvenate three different percentages (30%, 40%, and 50%) of reclaimed asphalt pavement following the current maximum industrial adaptability. The waste oil rejuvenated mixtures are compared to the fresh mixture, and mixtures rejuvenated with commercial rejuvenator. The moisture sensitivity, indirect tensile strength, and resilient modulus of the various asphalt mixtures are analyzed. Based on the statistical analyses and overall ranking, it is concluded that 7% of waste engine oil performs better till 40% of reclaimed asphalt pavement, whereas 13% of waste cooking oil can be used till 50% of reclaimed asphalt pavement.

scholarly journals Effect of Waste Engine Oil and Waste Cooking Oil on Performance Improvement of Aged Asphalt

2019 ◽  
Vol 9 (9) ◽  
pp. 1767 ◽  
Author(s):  
Haibin Li ◽  
Bo Dong ◽  
Wenjie Wang ◽  
Guijuan Zhao ◽  
Ping Guo ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Waste Cooking Oil ◽  
Engine Oil ◽  
Asphalt Binders ◽  
Cooking Oil ◽  
Waste Engine Oil ◽  
Physical Chemical ◽  
Pavement Recycling ◽  
Aged Asphalt ◽  
Cyclic Utilization

In order to explore the applicability of waste engine oil and waste cooking oil used in aged asphalt, the effect of waste engine oil and waste cooking oil on aged asphalt recycling was studied through the analysis of the improvement of its physical, chemical, and rheological properties. Six aged asphalt binders with different aging times were obtained by indoor test simulation using the Thin Film Oven Test at 163 °C. Then, waste engine oil and waste cooking oil with five different dosages were added to investigate improvement performances. The results clearly demonstrated that waste engine oil and waste cooking oil could soften and recover the work ability of aged asphalt effectively. Furthermore, the physical, chemical, and rheological performances of six aged asphalts could be improved to normal level of virgin asphalt if the content of waste engine oil or waste cooking oil was suitable. The rheological properties of aged asphalt with waste cooking oil had better improvement than that with waste engine oil. Overall, the good applicability would provide waste oil a much wider service range in asphalt pavement recycling field. It also provided a method of developing new rejuvenating agent with the two waste oils to achieve complex synergism effect. Moreover, it realized the waste cyclic utilization and environmental protection.

scholarly journals Performance of Aged Asphalt Binder Treated with Various Types of Rejuvenators

2021 ◽  
Vol 7 (3) ◽  
pp. 502-517
Author(s):  
Munder Bilema ◽  
Yusri Bin Aman ◽  
Norhidayah Abdul Hassan ◽  
Zaid Al-Saffar ◽  
Kabiru Ahmad ◽  
...  
Keyword(s):  
Asphalt Binder ◽  
Virgin Olive Oil ◽  
Chemical Properties ◽  
Road Construction ◽  
Waste Cooking Oil ◽  
Engine Oil ◽  
Cooking Oil ◽  
Waste Engine Oil ◽  
Aged Asphalt ◽  
The Impact

High demand for asphalt binders in road construction verifies the need of finding alternative materials through asphalt pavement recycling. This paper investigated the impact of different rejuvenators on the performance of an aged asphalt binder. Virgin Olive oil, virgin cooking oil, waste cooking oil, virgin engine oil, and waste engine oil were added to a 30/40 penetration grade aged asphalt binder at a fixed oil content of 4% for all types. The wet method was used to blend the rejuvenators and aged asphalt binder. The physical, rheological, and chemical properties of the rejuvenated asphalt binder were evaluated using several laboratory tests which include penetration, softening point, bleeding, loss on heating, storage stability, penetration index, ductility, viscosity, dynamic shear rheometer, and Fourier transform infrared spectroscopy. The outcomes of the physical properties showed that the olive, waste, and virgin cooking rejuvenators can restore the aged asphalt binder to a penetration grade of 60/70. In contrast, the virgin and waste engine oil required a more quantity of oil to rejuvenate the aged asphalt binder. A sufficient amount of rejuvenator could regenerate the (G*/sin δ), (δ°), and (G*) for the aged asphalt binder. The addition of virgin olive and cooking oils in aged asphalt led to a rutting issue. No chemical reactions were observed with the addition of rejuvenators but they give an impact on reducing the oxidation level of the aged asphalt binder. As a result, further research should be performed on waste cooking oil given that it is inexpensive and provides excellent performance results. Doi: 10.28991/cej-2021-03091669 Full Text: PDF

Evaluation of Pavement Mixture Incorporating Waste Oil

2014 ◽  
Vol 71 (3) ◽  
Author(s):  
Nurul Hidayah Mohd Kamaruddin ◽  
Mohd Rosli Hainin ◽  
Norhidayah Abdul Hassan ◽  
Mohd Ezree Abdullah ◽  
Haryati Yaacob
Keyword(s):  
Waste Product ◽  
Road Construction ◽  
Waste Cooking Oil ◽  
Economic Benefits ◽  
Engine Oil ◽  
Waste Oil ◽  
Reclaimed Asphalt ◽  
Pavement Materials ◽  
Waste Engine Oil ◽  
Renewable Material

Road construction necessitates a high amount of bitumen, which is a non-renewable material. The usage of reclaimed asphalt pavement (RAP) can be seen as a sustainable option, which offers economic benefits and conservation of natural resources. However, the high stiffness offered by RAP which leads to cracking has impelled the application of rejuvenator. The exploration of waste oil as the rejuvenator has gained the interest but they still lack of the information. This paper aims to highlight previous research works conducted on the waste oil application in the pavement materials. Large amount of waste product from the automotive industry and by-product of frying can impose adverse impact if not disposed properly. The properties of two types of waste oil namely waste engine oil (WEO) and waste cooking oil (WCO) were reviewed. Additionally, method incorporating waste oil in pavement materials, effects to the binder and mixture performance also included. It was observed that the effects of WEO and WCO are commonly produced both of the adverse and good effects to the pavement. The temperature, amount of waste oil and RAP are notable to give significant influence on the performance properties.

Controlling porosity and density of nanocellulose aerogels for superhydrophobic light materials

TAPPI Journal ◽  
2018 ◽  
Vol 17 (03) ◽  
pp. 145-153 ◽  
Author(s):  
Chengua Yu ◽  
Feng Wang ◽  
Shiyu Fu ◽  
Lucian Lucia
Keyword(s):  
Contact Angle ◽  
Freeze Drying ◽  
Engine Oil ◽  
High Porosity ◽  
Water Mixture ◽  
Waste Engine Oil ◽  
Hydrophobically Modified ◽  
Static Contact ◽  
Oil Water ◽  
Hydrophobic Material

A very low-density oil-absorbing hydrophobic material was fabricated from cellulose nanofiber aerogels–coated silane substances. Nanocellulose aerogels (NCA) superabsorbents were prepared by freeze drying cellulose nanofibril dispersions at 0.2%, 0.5%, 0.8%, 1.0%, and 1.5% w/w. The NCA were hydrophobically modified with methyltrimethoxysilane. The surface morphology and wettability were characterized by scanning electron microscopy and static contact angle. The aerogels displayed an ultralow density (2.0–16.7 mg·cm-3), high porosity (99.9%–98.9%), and superhydrophobicity as evidenced by the contact angle of ~150° that enabled the aerogels to effectively absorb oil from an oil/water mixture. The absorption capacities of hydrophobic nanocellulose aerogels for waste engine oil and olive oil could be up to 140 g·g-1 and 179.1 g·g-1, respectively.

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