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Biomass as a Source for Heat, Power and Chemicals
Published in Subhas K. Sikdar, Frank Princiotta, Advances in Carbon Management Technologies, 2021
Straight unmodified edible vegetable oil is generally not used as fuel, but lower-quality oil has been used for this purpose. Used vegetable oil is increasingly being processed into biodiesel, or (more rarely) cleaned of water and particulates and then used as a fuel.
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Published in Heinz P. Bloch, Kenneth E. Bannister, Practical Lubrication for Industrial Facilities, 2020
Heinz P. Bloch, Kenneth E. Bannister
However, for most industrial lubricant applications, a number of additional factors must be considered. Foremost among these considerations is product performance. Vegetable oils have poor hydrolytic and oxidative stability; this may necessitate more frequent oil changes and result in significant disposal problems that may outweigh any environmental advantages. They also have relatively high pour points, which can impair low-temperature performance. Additives such as pour depressants and anti-oxidants may help compensate for these drawbacks, but they tend to reduce biodegradability and may increase the toxicity of the overall product to humans and the environment.
Effect of Biodiesel and Additives on Diesel Engine Efficiency and Emission
Published in Anand Ramanathan, Babu Dharmalingam, Vinoth Thangarasu, Advances in Clean Energy, 2020
Anand Ramanathan, Babu Dharmalingam, Vinoth Thangarasu
Shahid and Jamal (2011)studied conventional and non-conventional sources for biodiesel production. Conventional sources are soybean oil, ground nut, sunflower, safflower, rice bran oil, palm oil, coconut oil, rapeseed oil, jatropha oil, cotton seed oil, and karanja oil, while non-conventional sources are lard oil, tallow, fish oil, algae, fungi, and microalgae. Earlier literature studies reported that the use of vegetable oil in biodiesel production caused environmental problems like deforestation, destruction of soil, and consumption of more arable land. Also, the price of vegetable oil will increase significantly, which will affect the economic viability of biodiesel. Further, it creates a food-versus-fuel conflict in society (Baskar and Aiswarya 2016). Vegetable oil–based biodiesel costs about 1.5 times more than conventional diesel due to feedstock cost. Feedstock should be cheap and easily available (Ma and Hanna 1999). Hence, selection of edible oil as a feedstock for biodiesel production is not a good long-term choice.
A comparative experimental evaluation of the performance of additive compounds for inhibition of asphaltene precipitation from crude oil
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2021
Shahin Alizadeh, Fariborz Fazelipour, Seyedeh Maryam Mousavi, Reza Mansourian, Jafar Qajar
A lot of commercial and or experimental inhibitors such as vegetable oils (Rocha Rocha Junior, Ferreira, and Da Silva Ramos 2006), resins (Victorov and Smirnova 1998), nanoparticles (Franco et al. 2013), surfactants (Subramanian and Firoozabadi, 2015), and other less known materials (Gawrys 2005) have been developed by many companies and researchers to inhibit the asphaltene precipitation in pipelines and reservoirs. A few studies have been conducted in order to evaluate the performance of vegetable oils on asphaltene precipitation control (Karan et al. 2003). Vegetable oil is a mixture with high solubility and contains materials with similar characteristics to amphiphiles (Mohamadshahi and Nazar 2012). Different vegetable oils have important differences in fatty acid compositions and also different compositions in non-glyceride contents including phenols, sterols, tocopherols, and squalene, but these nutrients vary substantially depending on processing and storage conditions. Vegetable oils are a group of fats that are derived from some seeds, nuts, cereal grains, and fruits. It is important to understand that not all of these vegetable oils are liquid oils at ambient temperatures. The production cost of vegetable oil is low; they are cheaper than most polymeric dispersants. They are easy to handle and their consumption in any way does not cause environmental threats (Rocha Junior, Ferreira, and Da Silva Ramos 2006).
Impact of alumina and cerium oxide nanoparticles on tailpipe emissions of waste cooking oil biodiesel fuelled CI engine
Published in Cogent Engineering, 2021
Pijakala Dinesha, Sooraj Mohan, Shiva Kumar
Edible vegetable oil is widely used in frying and cooking purposes. Due to their repeated use may convert them into polycyclic aromatic HCs, dioxins, etc., which are toxic in nature and may cause severe health issues in human beings if consumed. Hence, value-added use of WCO includes soaps, lubricants and as a domestic fuel. The calorific value of WCO is at par with that of other vegetable oil-derived fuels. Properties of WCO biodiesel are comparatively similar to mineral diesel. Hence, it can be used as an alternative diesel engine fuel. The WCO biodiesel is procured from the local biofuel development centre. The WCO biodiesel is blended with diesel in a volume proportion of 20% biodiesel and 80% diesel. From the literature, it is revealed that B20 blend exhibits improved performance with lower emissions compared to other biodiesel blends.(Kumar, Dinesha, Bran et al., 2017) The physicochemical properties of the fuel blend have been determined as per ASTM standards and given in Table 5.
Effect of feedstock, impurities, and rancidity on likelihood of spontaneous combustion of oil and biodiesel
Published in Biofuels, 2022
Brian Hanson, Dev S. Shrestha, Chad Dunkel
Vegetable oils are frequently used for cooking. Typical waste vegetable oil (WVO) is comprised primarily of soy and canola oils but is often degraded from cooking. Vegetable oils composition can vary due to price, health concerns, flavors, type of restaurant, and availability in the region. Heating vegetable oils to high temperatures in presence of oxygen causes the oils to degrade and become rancid easily. Rancidity can be caused by a multitude of factors including the degree of unsaturation of the oil, the type and concentrations of antioxidants, pro-oxidants and trace metals present, availability of oxygen, surface area, moisture content, temperature and degree of exposure to light [3].