Abstract Drexel Universitys team has developed a process to extract grease from wastewater and convert it into biodiesel Waste greases are an untapped source of high value fuel if you can concentrate the grease remove impurities and achieve stringent fuel standards Meeting these chal ID: 299076
Download Presentation The PPT/PDF document "Research Collaboration" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Research Collaboration
Abstract
Drexel University’s team has developed a process to extract grease from wastewater and convert it into biodiesel. Waste greases are an untapped source of high value fuel, if you can concentrate the grease, remove impurities, and achieve stringent fuel standards. Meeting these challenges produces a fuel with a lower carbon footprint than both petroleum diesel and soybean biodiesel.
This poster presents results from an EPA P3 funded project and ongoing research.
Drexel University Team
Chemical & Biological Engineering:
Prof. Richard Cairncross, Megan Hums, Cory
Melick, and over 20 other students Mechanical Engineering & Mechanics: Prof. Nicolas Cernansky, Colin Stacy and over 15 other studentsCivil Architectural and Environmental Engineering: Prof. Mira Olson, Prof. Sabrina Spatari, and over 10 students
Out of the Frying Pan and Into the Fuel Tank
Novel Reactor Design for Biodiesel Production
CONTACT INFORMATION:
Richard Cairncross
cairncross@drexel.edu 215-895-2230
3141 Chestnut St.Philadelphia, PA 19104
Chemical & Biological Engineering
Drexel University
BCR is robust for:Low-value grease feedstocksVarious alcoholsElevated water content
Fuel Life Cycle
Biodiesel Chemistry and Research
Conventional biodiesel production:
Refined vegetable oils (FFA-lean triglycerides)
High feedstock cost
Cheap processing
Alternative biodiesel production:
Waste fats, oils, and greases (FFA-rich)
Degraded and dirty
Low feedstock cost
More difficult processing
Biodiesel
is a renewable fuel
Can substitute for, or blend with diesel
Lower emissions than petroleum diesel
Domestic supply of energy
Purification of Biodiesel by Short-Path Distillation
Crude FOG biodiesel is
Dirty
High in sulfur content
Difficult to separate
Short-path distillation purifies biodiesel:
Under high vacuum
Low temperature
Reduces sulfur Crude: 201 PPMResidue: 776 PPMBiodiesel: 27 PPM(ASTM grade = 15 PPM)
Wastewater
Small-Scale Biodiesel Plant
Trap Grease
Biodiesel
Waste Sediments
(1)Separation
(2)Conversion
(3)Purification
Bubble Column
The views expressed on this poster are not necessarily those of the EPA, Drexel University or the Collaborating Partners
From Kitchen
Grease Trap Waste
Sediments
To Sewers
FFA
Biodiesel
by Bubble Column Reactor
What Happens to FOG (Fats, Oils and Greases) When It Goes Down the Drain?
Scum Grease
Rising Bubble
Liquid Phase Lipids
MeOH
& H
2
O Vapor
O
R
C
OH
FFA
O
R
C
O
CH
3
FAME
MeOH
+
H
3
C
OH
+
H
H
Water
O
Operates above boiling temperatures
Achieves >95% FFA conversion
Ra
Trap
Grease
In
commercial kitchens
most
FOG is collected as
Grease
Trap Waste
and is regularly pumped out.
Some FOG enters sewer system
and
is collected as
Scum Grease
in Wastewater Treatment Plants
Schematic of a Grease Interceptor
Current Activities Evolved
from EPA P3 Projects
For
> 14
% Lipids
FOG beats Soybean
For
< 1 %
Lipids
FOG beats LSD
Fuel
energy
output
divided by fossil energy
input
Feedstock
Conversion
Vehicle Use
Fuel Life
TRANSESTERIFICATION
Meal (80%)
Biodiesel
(17%)
Glycerin (3%)
HEATING
~60 C
SETTLING
Raw
Scum
Grease
Raw
Trap
Grease
Waste (80%)
Biodiesel
(19%)
Residue
(1%)
Proposed Grease-to-Biodiesel Process
Hot
wall
Cold
wall
Crude FAME
201 PPM
Biodiesel 2
7 PPM
Residue
776
PPM
Wipers
Soybeans for Biodiesel
FOG for Biodiesel
Sanitary Sewer
Transfer Station
Wastewater Treatment
Restaurant
Trap
Diesel
Kitchen Effluent
Pumping
Grease
Trap
Grease
Disposal
:
Incinerator
Landfill
Anaerobic
digester
Traditional Route to Biodiesel
Harvest
Biodiesel Production
Harvest
Use for Cooking
Disposal
Distribution
CO
2
Emissions
Recycle
Our process takes oils
Out of the Frying Pan
and
Into the Fuel Tank