Thermo-chemical extraction of fuel oil from waste lubricating grease

Pilusa, Tsietsi J.; Muzenda, Edison; Shukla, Mukul

doi:10.1016/j.wasman.2013.02.014

Cited by 24 publications

(11 citation statements)

References 14 publications

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“…Similarly, Chen et al 149 and Funazukuri et al 64 reported 1 wt.% and 2 wt.% sulfur in the oil obtained from the hydrous pyrolysis of scrap tire respectively. For greenhouse gas emissions, Pilusa et al 167 reported quantitative analysis of the flue gas produced by the combustion of tire derived oil. According to their studies, the burning of tire oil generated 0.23, 12.5, 0.003, and 0.01 (vol.…”

Section: Environmental and Economic Feasibilitymentioning

confidence: 99%

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Potential use of natural rubber to produce liquid fuels using hydrous pyrolysis – a review

2016

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Natural rubber is a tropical plantation crop that mainly consists of hydrocarbon polyisoprene (cis-1,4-polyisoprene). Rubber can be converted through depolymerization into liquid, which can be used as fuels or chemical feedstock. This paper provides information on natural rubber and its alternative sources worldwide. Although we focus on hydrous pyrolysis, we also introduced various depolymerization processes, including pyrolysis, gasification, chemical degradation, catalytic cracking and hydrogenation. Hydrous pyrolysis improves the depolymerization process, such that raw materials can be fed without requiring a drying process. This process can also be conducted at low temperatures, and water can be solely used as reaction medium and can be easily separated from the oil product. This paper also reviews the role of process parameters such as temperature, rubber to water ratio, reaction time, and type of gases on product quality and quantity. Moreover, this study highlights the environmental and economic feasibility of hydrous pyrolysis.

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Section: Environmental and Economic Feasibilitymentioning

confidence: 99%

“…According to their studies, the burning of tire oil generated 0.23, 12.5, 0.003, and 0.01 (vol. %) of SOx, CO 2 , NOx and CO respectively 167,168 . Table 4 shows the greenhouse gases emissions from tire oil.…”

Section: Environmental and Economic Feasibilitymentioning

confidence: 99%

Potential use of natural rubber to produce liquid fuels using hydrous pyrolysis – a review

2016

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“…The method used in the research was adopted from reference [11]. Three hundred grams of 15% w/w KOH solution was transferred to 1000 ml beaker and heated to 85ºc.…”

Section: Methodsmentioning

confidence: 99%

Mineral base oil recovery from waste lubricant grease

Misozi¹,

Víctor²,

Ebelia³

et al. 2018

Rwanda Journal of Engineering, Science, Technology and Environment

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Lubricants play an important role in the running of automotive and related machines. They prevent wear and tear of machines through the provision of a protective film between two moving parts. With time, the performance of grease is reduced creating a problem of waste lubricant grease. This research investigated the recovery of mineral base oil from waste lubricating grease obtained from the mining industry. A base was used to flocculate the impurities and temperature was applied to degrade the waste grease. A solvent was further used to separate and purify the sludge mixture generated. The investigation achieved recovery of base oil from the waste oil sourced from a mine. Other parameters which were determined included Calorific value, viscosity and water content. Recovery of valuable base oil indicated the prospects of volume reduction of waste grease at storage facilities and possibilities of blending with other oils to enhance their fuel capacities.

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“…The unwanted aromatic components present in waste oils can be selectively separated out by suitable organic solvent and the remaining saturated components could eventually enhance the oxidative stability of the treated oils [35]. In addition to the use of conventional solvent extraction to treat waste oils, there have been research conducted on treating waste lubricating oils by combining solvent extraction with other techniques, such as thermal degradation in strong base aqueous solution followed by solvent extraction [36], and combination of solvent extraction and adsorption on solids [37]. It was revealed that these method offer advantages in providing high oxidation stability of the recovered oil and the separated compounds could be highly selective.…”

Section: Solvent Extractionmentioning

confidence: 99%

Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques

Lam

Liew

Jusoh

et al. 2016

Renewable and Sustainable Energy Reviews

285

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a b s t r a c tThis paper begins with a review on the current techniques used for the treatment and recovery of waste oil, which is then followed by an extensive review of the recent achievements in the sustainable development and utilization of pyrolysis techniques in energy recovery from waste oils. The advantages and limitations shown by the use of pyrolysis technique and other current techniques were discussed along with the future research that can be performed on the pyrolysis of waste oil. It was revealed that the current techniques (transesterification, hydrotreating, gasification, solvent extraction, and membrane technology) are yet to be sustainable or completely feasible for waste oil treatment and recovery. It was established that pyrolysis techniques offer a number of advantages over other existing techniques in recovering both the energetic and chemical value of waste oil by generating potentially useful pyrolysis products suitable for future reuse. In particular, microwave pyrolysis shows a distinct advantage in providing a rapid and energy-efficient heating compared to conventional pyrolysis techniques, and thus facilitating increased production rates. It was found that microwave pyrolysis of waste oil showed good performance with respect to product yield, reaction time, energy consumption, and product quality, and thus showing exceptional promise as a sustainable means for energy recovery from waste oils. Nevertheless, it was revealed that some important characteristics of the pyrolysis process have yet to be fully investigated. It was thus concluded that more studies are needed to extend existing understanding in the optimal reaction and process parameters in order to develop the pyrolysis technology to be a sustainable and commercially viable route for energy recovery from problematic waste oils.

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Thermo-chemical extraction of fuel oil from waste lubricating grease

Cited by 24 publications

References 14 publications

Potential use of natural rubber to produce liquid fuels using hydrous pyrolysis – a review

Potential use of natural rubber to produce liquid fuels using hydrous pyrolysis – a review

Mineral base oil recovery from waste lubricant grease

Progress in waste oil to sustainable energy, with emphasis on pyrolysis techniques

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