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Environmental Science and Pollution Research

, Volume 25, Issue 18, pp 17634–17644 | Cite as

Impact of antioxidant additives on the performance and emission characteristics of C.I engine fuelled with B20 blend of rice bran biodiesel

  • Karthikeyan Alagu
  • Beemkumar Nagappan
  • Jayaprabakar Jayaraman
  • Anderson Arul Gnana Dhas
Research Article

Abstract

This manuscript presents the impact of addition of antioxidant additives to rice bran biodiesel blend on the performance and emission characteristics of compression ignition (C.I) engine. Rice bran methyl ester (RBME) was produced from rice bran oil by transesterification using sodium hydroxide as catalyst. An experimental investigation was conducted on a single-cylinder four-stroke C.I engine to analyze the performance and emission characteristics of rice bran methyl ester (RBME) blended with diesel at 20% by volume (B20) with and without addition of 1000 ppm of two monophenolic antioxidant additives, butylated hydroxyanisole (BHA) and butylated hydroxytoluene (BHT). The results showed that the BHA- and BHT-treated B20 blend decreased the brake specific fuel consumption (BSFC) by 2.1 and 1.2% and increased the brake thermal efficiency (BTE) by 1.04 and 0.5% compared to B20. The BHA- and BHT-treated B20 blend produced mean reductions in NOx emission of 12.2 and 9.6%, respectively, compared to B20. The carbon monoxide (CO) and hydrocarbon (HC) emissions of BHA- and BHT-treated B20 were increased by 14.8–16.6% and 10.6–11.2%, respectively, compared to B20. However the emission levels were lower than those of diesel.

Keywords

Antioxidant additives Rice bran biodiesel Emission Performance Butylated hydroxyanisole Butylated hydroxytoluene 

Nomenclature

ASTM

American society of testing and materials

IV

Iodine value

BHA

Butylated hydroxyanisole

NOx

Nitrogen oxides

BHT

Butylated hydroxytoluene

PM

Particulate matter

BP

Brake power

RBME

Rice bran methyl ester

BSFC

Brake specific fuel consumption

RBO

Rice bran oil

BTE

Brake thermal efficiency

SN

Saponification number

C.I

Compression ignition

B100

Rice bran biodiesel/RBME

CO

Carbon monoxide

B20

20%RBME+80%Diesel

EGT

Exhaust gas temperature

B20 + BHA

20%RBME+80%Diesel+1000 ppm BHA

HC

Hydrocarbon

B20 + BHT

20%RBME+80%Diesel+1000 ppm BHT

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mechanical EngineeringSathyabama Institute of Science and TechnologyChennaiIndia

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