Potential Bio-Fuel from Refinery Waste through Anaerobic Digestion

Sophia Nawaz Gishkori,Ghulam Abbas,Muhammad Salman Haider,Fahid Nisar,Sajjad Ur Rahman,Aqeel Ahmad Shah

doi:10.3390/engproc2021012068

Abstract

In this study we report biofuel potential in waste cake obtained from oil refinery. The sample was analyzed for its calorific value using auto bomb calorimeter (LECO AC-500), proximate analysis using Thermogravimetric analyzer (LECO 701) and elemental analysis using CHNS analyzer (LECO Tru-Spec). The elemental analysis of dry waste cake vs wet cake depicted the percentage composition of carbon (49.8%, 40.8%), hydrogen (7.9%, 6.0%), nitrogen (2.8%, 1.9%), Sulphur (1.9%, 0.5%) and oxygen content (37.6%, 40.4%). As for as the thermal degradation behavior of dry and wet cake in TGA is concerned, higher moisture contents (68.50%) found in wet cake and lower in dry cake (40.1%). Whereas the volatile matter in dry cake (30.9%) and low volatile in wet cake (14.3%). Similarly, %age of ash become high in dry cake (17.3%) and low in wet cake (5.11%). The results reflected that higher heating value of dry waste cake is higher (22.5 MJ/kg) than wet waste cake (20.5 MJ/kg) and commonly used sugarcane bagasse (17.88 MJ/kg).

Highlights

During the oil refinery wastewater treatment, a semi-solid by-product is formed which is known as waste water
In this study we report biofuel potential in waste cake obtained from oil refinery
The Oxygen content and volatile matter is high, which indicates that waste cake has good combustion reaction ability

Summary

Introduction

During the oil refinery wastewater treatment, a semi-solid by-product is formed which is known as waste water. Gaseous products usually disappeared by reaction of elastomers, fibers, thermoplastic, composites and paints [1]. They emit greenhouse gases like carbon dioxide but at lower levels [2]. The investigation of biological and physio-chemical sludge was determined by heating at different rates such as 4 and 10 ◦C/min, with different interaction time between gases in Spanish oil refinery [3]. The effect of operating parameters such as heating rate of various biomass was investigated through TGA. In the refining process of crude oil, large quantities of oily sludge are produced in refineries.

Materials and Methods

Findings

Conclusions