The document outlines a project aimed at developing novel bio-based carbon electrodes for capacitive deionization (CDI) to address water scarcity through desalination. It details the synthesis and characterization of electrodes using biomass such as edible oil cakes, sawdust, and watermelon rinds, and highlights the performance of these materials based on proximate analysis. The integration of solar energy is proposed to enhance energy efficiency in the desalination process.

1. SYNTHESIS OF BIOELECTRODE FOR THE
TREATMENT OF WASTEWATER
Guided by
Dr. T SANTHOSHINI PRIYA
Assistant Professor
Department of Chemical Engineering,
Alagappa College of Technology,
Anna University, Chennai 600 025.
Team members:
1. Myleshwari.S (2021303534)
2. Akshaya .S(2021303005)
1
PRESENTATION FOR PROJECT PHASE– 1 (CH5714)
September 2024

2. 1. INTRODUCTION:
• Water scarcity poses a significant threat to global societies, necessitating innovative solutions.
• One promising approach involves harnessing non-conventional sources for drinking water
production. Desalination by Capacitive Deionization (CDI) emerges as a viable, eco-friendly, and
energy-efficient method.
• However, CDI faces challenges related to electrode scalability, salinity limits, and cost
effectiveness. To address these, this project focuses on developing novel bio-based carbon
electrodes for CDI systems.
• By leveraging bio-based carbon compounds, these electrodes aim to enhance desalination
performance, durability, and electrochemical stability. The integration of solar energy further
reduces energy requirements.
2

3. 3
3.OBJECTIVE:
This work focused on the capacitive deionization using the Bio-Electrode. The proposed work are
summarized as follows,
1. To synthesize the Bio-Electrode material
[Biomass taken: Edible oil cakes , Saw dust , Watermelon rinds ].
2. To characterize the synthesized Bio-electrode using SEM, XRD FTIR, BET analysis.
3. To do the electrochemical characterization for the synthesized Bio-electrodes.
4. To conduct a experimental study on CDI and optimize the CDI performance using the
synthesized Bio-electrodes.

4. 4

5. 5
4. PROXIMATE ANALYSIS :
4.1 PROCEDURE:
* Each biomass of 3 grams is weighed and taken in the crucible.
* The weighed biomass is kept in the hot air oven at 110 for 1 hour to
℃
remove the moisture content , the final weight is weighed and noted.
* The biomass taken from hot air oven is kept in muffle furnace at
600 for 10 minutes to remove the volatile matter and biochar is
℃
prepared. The biochar is weighed and noted.
*The formed biochar is again kept in muffle furnace at 600 for 40
℃
minutes to remove the carbon content so that the ash is formed. It is
noted and weighed

6. 6
1.Moisture content :
* Saw dust = 7%
* Watermelon rinds = 11.3%
2.Volatile matter% :
* Saw dust = 51%
* Watermelon rinds = 65.8%
3.Ash content % :
* Saw dust = 4.6%
* Watermelon rinds = 8%
4.Percent Carbon content :
* Saw dust = 44.4%
* Watermelon rinds = 26.2%
4.2 RESULTS:
4.3 INFERENCE:
• Proximate analysis reveal that carbon content of both biomass is greater than the ash content.
• Therefore, both the biomass can be used for the preparation of biochar and further bio electrodes

7. 7
5. REFERENCES:
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removal ,Yan Zhao a, Tianwen Song a, Xinyu Fan a, Dahan Yang c, Guangsheng Qian b,Science and technology of
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• A novel two-stage continuous capacitive deionization system with connectedflow electrode and freestanding
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Wang a,Chemical Engineering Journal,Volume 491, 1 July 2024. https://doi.org/10.1016/j.cej.2024.152133
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Chun Liu,Science and technology of desalination and purification journal, Volume 575, 16 April 2024 .
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8. 8
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9. 9
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