Removal of Water Content From Biodiesel and Diesel Fuel Using Hydrogel Adsorbents

Fregolente, Patrícia Bogalhos Lucente; Maciel, Maria Regina Wolf; Oliveira, Leandro S.

doi:10.1590/0104-6632.20150324s20140142

Cited by 52 publications

(20 citation statements)

References 15 publications

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“…BB synthesis with Novozyme 435 showed a yield conversion of about 85 % in hexane when using a substrate concentration of 0.1 m and 1:1 molar ratio . The higher conversion yield in the current study may possibly be related to the water solubility in diesel, which is about 350 mg L −1 . Under that low water activity, an increase in substrate concentration would lead to a higher conversion yield as water becomes a lesser fraction of the substrates (it would be equivalent if the water was removed as it was produced).…”

Section: Resultsmentioning

confidence: 61%

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In Situ Biocatalytic Synthesis of Butyl Butyrate in Diesel and Engine Evaluations

et al. 2017

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Blending petroleum fuels with biofuels is likely to become increasingly important over the years to come. Butyl butyrate has promising characteristics as a blend component in diesel and can be synthesized by lipase‐catalyzed esterification of 1‐butanol and butyric acid, which both can be derived from fermentation technologies. In the current study, the enzyme load and reaction temperature were optimized for the production of butyl butyrate with Novozyme 435 (immobilized Candida antarctica lipase B) directly in diesel at a substrate concentration of 1 m using a molar ratio of 1:1 between n‐butanol and butyric acid. Optimum conditions were found by using a central composite design at an enzyme load of 12 % of substrate weight and a temperature of 57 °C, giving 90 % yield conversion in 30 min, corresponding to a butyl butyrate productivity of 1.8 mol L−1 h−1. Diesel blended with 5, 10, and 30 % butyl butyrate was tested in a heavy‐duty diesel engine under two load cases. The ignition properties of the blended fuels were very similar to pure diesel, making butyl butyrate an interesting diesel substitute. The emission analysis demonstrated lower soot and CO emissions, similar hydrocarbons levels and slightly increased NOx levels compared with using pure diesel. The high activity of lipase in diesel and the compatibility between diesel and butyl butyrate opens up the possibility to develop fuel blending systems where the synthesis of the blend‐in component occurs directly in the fuel.

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Section: Resultsmentioning

confidence: 61%

“…The small effect of the molecular sieves could possibly be attributed to the fact that most of the water formed is phased out. The saturated water content of diesel has been determined to be 350 ppm at a temperature of 30 °C and a relative humidity of 60 %, which is a small fraction of the substrate concentrations used in the current study.…”

Section: Resultsmentioning

confidence: 99%

In Situ Biocatalytic Synthesis of Butyl Butyrate in Diesel and Engine Evaluations

et al. 2017

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“…Thus, the addition of biodiesel to diesel increases the water retention capacity of the blend [20]. Meanwhile, humidity is one of important thing that affect in water content on fuel.…”

Section: Resultsmentioning

confidence: 99%

Storage tank materials for biodiesel blends; the analysis of fuel property changes

2017

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Abstract. Fuel stability is one of major problem in biodiesel application. Some of the physical properties of biodiesel are commonly changed during storage. The change in physico-chemical properties is strongly correlated to the stability of the fuel. This study is objected to observe the potential materials for biodiesel storage. The test was conducted in three kinds of tank materials, such as glass, HDPE, and stainless steel. The fuel properties are monitored in 12 weeks, while the sample was analyzed every week. Biodiesel used is palm oil based. The storage tanks were placed in a confined indoor space with range of temperature 27-34 o C. The relative humidity and sunshine duration on the location was also evaluated. The observed properties of the fuel blends were density, viscosity and water content. During 12 weeks of storage, the average density of B20 was changed very slightly in all tanks, while the viscosity was tend to increase sharply, especially in polimerics tank. Water content of B20 was increased by the increase of storage time especially in HDPE tank. In short period of storage, the biodiesel blends is found more stable in glass tank due to its versatility to prohibit oxidation, degradation, and its chemical resistance.

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“…When stored, biodiesel can absorb more humidity than conventional diesel, since FAMEs are hygroscopic compounds. Even though relevant high values (>1000 ppm) have been recorded, for biodiesel, different techniques are available to absorb humidity [33]. The high water content in biodiesel may lead to the corrosion of some engine parts resulting to engine failure.…”

Section: Uco Samples Converted At Elin Laboratoriesmentioning

confidence: 99%

Quality Characteristics of Biodiesel Produced from Used Cooking Oil in Southern Europe

et al. 2019

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The potential of households’ used cooking oil (UCO) recycling for biodiesel production is massive. This study aims to promote the shift from UCO inappropriate disposal to sustainable recycling. UCO is classified as municipal waste under the code 20 01 25 (edible oils and fats), according to the European Waste Catalogue. Inappropriate UCO disposal increases the operating cost of wastewater treatment, the risk of groundwater contamination, as well as the greenhouse gas emissions that are associated with its biodegradation. Recycling UCO-to-biodiesel offers a sustainable solution in the exploitation of a problematic waste and its transformation into an energy resource, thus contributing to the reduction of environmental pollution and fossil fuel dependence. This paper includes critical recommendations in order to overcome bottlenecks to successfully promote the UCO-to-biodiesel chain. Quality control of the biodiesel—produced exclusively from UCO—was performed according to the European Standard EN 14214 and the results are presented in the paper. The analysis studies the outcomes from four Southern European countries (Spain, Portugal, Italy, and Greece), which hold the top four places in annual per capita olive oil consumption in the European Union (EU).

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Removal of Water Content From Biodiesel and Diesel Fuel Using Hydrogel Adsorbents

Cited by 52 publications

References 15 publications

In Situ Biocatalytic Synthesis of Butyl Butyrate in Diesel and Engine Evaluations

In Situ Biocatalytic Synthesis of Butyl Butyrate in Diesel and Engine Evaluations

Storage tank materials for biodiesel blends; the analysis of fuel property changes

Quality Characteristics of Biodiesel Produced from Used Cooking Oil in Southern Europe

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