Behaviour of the antioxidant tert-butylhydroquinone on the storage stability and corrosive character of biodiesel

Almeida, Eduardo Santos; Portela, Flaysner Magayver; Sousa, Raquel; Daniel, Daniela; Terrones, Manuel Gonzalo Hernandez; Richter, Eduardo M.; Muñoz, Rodrigo A.A.

doi:10.1016/j.fuel.2011.06.056

Cited by 80 publications

(42 citation statements)

References 24 publications

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“…Further experiments are required to confirm the inhibitor action of TBHQ and will be addressed in the future. Similar behaviour of TBHQ was verified in immersion tests performed with copper coupons [3]. The higher consumption of TBHQ in the immersion test with carbon steel may be related to its metallic nature (carbon steel is more prone to corrosion than galvanised steel).…”

Section: Resultssupporting

confidence: 70%

“…TBHQ may either react with the oxidation products of biodiesel (and consequently reduce the corrosive character of biodiesel) or may act as a corrosion inhibitor by the formation of a protective film layer on the metallic coupon [3]. Previous studies have reported that phenolic molecules can act as a corrosion inhibitor [32][33][34].…”

Section: Resultsmentioning

confidence: 99%

“…However, the chemical properties of biodiesel can be altered during storage and transportation by the presence of water (absorbed from the air), heat, light, trace metals originating from the corrosion of containers and automotive materials, and attack by microorganisms [3][4][5]. Diesel engine components that come into contact with fuel are made from a variety of metals, non-metals, and elastomers.…”

Section: Introductionmentioning

confidence: 99%

“…It is also a difficult task to identify how the metallic species came to be present in biodiesel (free or associated with organic molecules) and if different species present similar catalytic power for the oxidation of biodiesel [12]. Moreover, antioxidants present in biodiesel may also act as a corrosion inhibitor in such a way that these molecules may be consumed in a second pathway [3].…”

Section: Introductionmentioning

confidence: 99%

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Storage stability and corrosive character of stabilised biodiesel exposed to carbon and galvanised steels

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Almeida

et al. 2013

Fuel

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h i g h l i g h t s " Galvanised and carbon steels have proven to be compatible with biodiesel. " Biodiesel properties were not affected for a storage time of 56 days. " Zinc release in non-stabilised biodiesel did not stimulate biodiesel deterioration. " TBHQ was rapidly consumed in the first days of the corrosion immersion test. " TBHQ acted as a corrosion inhibitor and enhanced storage stability of biodiesel. a b s t r a c tThe storage stability and corrosive character of soybean biodiesel stabilised with tert-butylhydroquinone (TBHQ) was investigated through static immersion corrosion tests. Coupons of carbon steel and galvanised steel were immersed in soybean biodiesel with and without TBHQ for 12 weeks. Measurements of total acid number, peroxide value, oxidation stability (Rancimat induction period), metal release, and TBHQ consumption at different stages of corrosion were performed. After 12 weeks of the static immersion test with both steels, the non-stabilised biodiesels presented induction times below the EN 14214 limit (6 h); these results were in agreement with increase in the peroxide values. Zinc release was only detected in the non-stabilised biodiesel exposed to galvanised steel, whilst iron was not detected in any biodiesel samples exposed to carbon steel. The absence of zinc in the TBHQ-doped biodiesel exposed to galvanised steel indicates that TBHQ may have acted as a corrosion inhibitor. Additionally, TBHQ was rapidly consumed in the first 3 days of experiments, providing evidence of its activity. For a storage period of up to 56 days, both galvanised and carbon steels were shown to be compatible with biodiesel even in the absence of an antioxidant. The presence of zinc (>2 lg g À1 after 28 days of immersion) due to corrosion did not promote biodiesel deterioration.

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Section: Resultssupporting

confidence: 70%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Storage stability and corrosive character of stabilised biodiesel exposed to carbon and galvanised steels

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Almeida

et al. 2013

Fuel

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“…Almeida et al 12 , studied the behavior of the antioxidant tert-butylhydroquinone in diesel's storage stability and corrosive character. Diesel oxidation stability was considerably affected after 24 hours in static immersion test using copper coupons.…”

Section: Abstract: Corrosion Biodiesel Corrosion Inhibitormentioning

confidence: 99%

Effects of Adding Some Natural Substances to Biodiesel to Control its Effect on Carbon Steel Corrosion

2015

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Allelopathic Activity and Chemical Composition of Rhynchosia minima (L.) DC. Essential Oil from Egypt

El-Gawad

El‐Amier

Bonanomi

2017

Chemistry & Biodiversity

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Aromatic plants attract the attention of many researchers worldwide due to their worthy applications in agriculture, human prosperity, and the environment. Essential oil (EO) could be exploited as effective alternatives to synthetic compounds as it has several biological activities including allelopathy. The EO from the aerial parts of Rhynchosia minima was extracted by hydrodistillation and investigated by gas chromatography/mass spectrometry (GC/MS). Different concentrations (50, 100, 150 and 200 lL L À1 ) of the EO were prepared for investigation of their allelopathic potential on two weeds; Dactyloctenium aegyptium and Rumex dentatus. Twenty-eight compounds, mainly sesquiterpenes (69.13%) were determined. The major compounds are a-eudesmol, 2-allyl-5-tertbutylhydroquinone, caryophyllene oxide, trans-caryophyllene, and s-cadinol. The EO from the R. minima showed a significant inhibition of D. aegyptium and R. dentatus germination, while the seedling growth was stimulated. Therefore, it is not recommended to treat these noxious weeds with the EO of R. minima before the germination. In contrast, the apparent stimulatory effect on the seedling growth offers further studies to use the EO of R. minima to enhance the fitness of different economic crops. However, characterization of green bio-herbicides such as EO (allelochemicals) from wild plants raises a new opportunity for the incorporation of new technology of bio-control against the noxious weeds.

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Behaviour of the antioxidant tert-butylhydroquinone on the storage stability and corrosive character of biodiesel

Cited by 80 publications

References 24 publications

Storage stability and corrosive character of stabilised biodiesel exposed to carbon and galvanised steels

Storage stability and corrosive character of stabilised biodiesel exposed to carbon and galvanised steels

Effects of Adding Some Natural Substances to Biodiesel to Control its Effect on Carbon Steel Corrosion

Allelopathic Activity and Chemical Composition of Rhynchosia minima (L.) DC. Essential Oil from Egypt

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