This document presents the design of an experiment to model the co-pyrolysis of lignocellulosic biomass and plastic to produce chemicals and biooil. The experiment used a central composite design with temperature and biomass percentage as factors to develop a response surface model. Experiments were conducted using a fixed-bed pyrolysis reactor with brown salwood sawdust and HDPE. The optimal conditions found were 600°C temperature, 0.7 HDPE:biomass ratio, and 120 mL/min nitrogen flow rate. Higher temperatures increased gas yields and decreased char and aqueous yields.

1. SESSION (2021-22)
SUBMITTED BY
SANA PARVEEN
21PKMEA102
DEPT. OF PETROLEUM STUDIES
Z.H.C.E.T.
ALIGARH MUSLIM UNIVERSITY
DESIGN OF EXPERIMENT

2. CONTENT
 ABSTRACT
 PROBLEM STATEMENT
 INTRODUCTION
 LITERATURE REVIEW
 FLOW SHEET
 RESULT & DISCUSSION
 CONCLUSION

3. PROBLEM STATEMENT
 The modeling on design experiment for co-pyrolysis of lignocellulosic biomass to
produce chemical and bio-oil have been carried out in this work with The design of
the process was accomplished using the response surface CCDModel Analysis Tools
of Design-Expert 12. The Response Surface (CCD with α = ± 1) model was
developed and analyzed.
 Furthermore, the achievement of the value of the objective given by the design of
experiment layout, by response surface 3 level factorial (CCD) design, the total
number of runs at different different temperature and biomass (wt.%) randomly
obtained from Design-Expert 12.

6. INTRODUCTION
 Co-pyrolysis process of biomass and plastics has been reported as an effective
upgrading method that will not only increase the quantity of the oil produced
but also improve its quality in terms of high calorific vale.
 To produce pyrolysis oil, pyrolysis experiments involving brown salwood
sawdust and HDPE were conducted in a custom-built fixed-bed pyrolysis
reactor to test several parameters, examine the effects of the operating
conditions and determine the optimal process conditions.

7. LITERATURE REVIEW
The optimal pyrolysis conditions for the lignocellulosic biomass material obtained
from the brown salwood sawdust with HDPE included a pyrolysis temperature of
600 ◦C, an HDPE-to-brown salwood ratio of 0.7 , and a nitrogen flow rate of
120.00 mL min− 1.
An increase in the pyrolysis temperature led to decreased char yields and
increased gas yields.The product distribution of the gas yield notably increased
from 38.15 ± 0.29 wt.% to 60.06 ± 0.09 wt.%.
The product distribution of the aqueous phase and solid char dramatically
decreased from 31.76 ± 0.19 wt.% to 6.58 ± 0.08 wt.% and from 16.49 ± 0.53
wt.% to 4.34 ± 0.18 wt. % respectively.

8.  The product distribution of the organic phase increased from 13.60 ± 3.55 wt.% to
35.10 ± 1.20 wt.% when the temperature increased from 500 to 600 ◦C and
decreased slightly to 34.57 ± 0.49 wt.%.
 when the temperature increased when the temperature increased from 500 to 600 ◦C
and decreased slightly to 34.57 ± 0.49 wt.%

9. Set up of the pyrolysis reactor used in the experimental work (1) nitrogen gas tank, (2) flow controller, (3) gas heater, (4) furnace with electrical
tubes, (5) char collector, (6) pyrolysis reactor, (7) biomass bed, (8) biomass lock hopper, (9) Thermocouple (10) condenser, (11) condensation &
gaseous separator, (12) filter, (13) gas flow meter, (14) gas output (15) extracted bio-oil.
FLOW SHEET

18. RESULT & DISCUSSION

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