Volume 48, Issue 5 e70021
Research Article

A Technical Analysis of Biofuel Production from Dairy Waste Sludge for Sustainable Environment

Rohit Pathak

Rohit Pathak

Department of Mechanical Engineering, Punjabi University, Patiala, Punjab, 147002 India

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Sandeep Singh

Corresponding Author

Sandeep Singh

Department of Mechanical Engineering, Punjabi University, Patiala, Punjab, 147002 India

E-mail: [email protected]

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Inderpreet Singh Ahuja

Inderpreet Singh Ahuja

Department of Mechanical Engineering, Punjabi University, Patiala, Punjab, 147002 India

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First published: 15 April 2025

Abstract

Ensuring a clean and secure environment has consistently presented a difficulty for researchers worldwide. In order to accomplish this objective, attention has been drawn to biofuels. The current study investigates the synthesis of biodiesel from stimulated composite sludge. A transesterification method was developed by examining the effects of process variables including preheating temperature, reaction time, methanol-to-oil ratio and catalyst concentration in order to estimate the lowest feasible viscosity and maximum ester recovery. The optimum kinematic viscosity (3.4 cSt) with ester recovery (78.93 %) was obtained by preheating dairy waste sludge at a 5:1 molar ratio to 40 °C and keeping that temperature for 40 min in the existence of 1 % KOH. These findings were based on the measurements of biofuel recovery and kinematic viscosity.

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