International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 09 | September 2022
p-ISSN: 2395-0072
www.irjet.net
REMOVAL EFFICIENCY OF METHYLENE BLUE DYE USING CHEMICALLY ACTIVATED WATERMELON RINDS AS A LOW-COST ADSORBENT Chaitra G D1, Sumana Y B2, Praveen Kumar G B 1PG
Scholar, Department of Civil Engineering, Bapuji Institute of Engineering and Technology, Davanagere-577004, Karnataka, India. 2Assistant Professor, Department of Civil Engineering, Bapuji Institute of Engineering and Technology, Davanagere-577004, Karnataka, India. 2Assistant Professor, Department of Civil Engineering, Bapuji Institute of Engineering and Technology, Davanagere-577004, Karnataka, India. ---------------------------------------------------------------------***--------------------------------------------------------------------prolonged consumption can make these dyes carcinogenic and mutagenic. There are many methods used to abate different dyes from the wastewater.
Abstract - Activated carbons are extensively used as
efficient and versatile adsorbents for purification of water, air and many chemical and natural products. Watermelon Rind is used as an adsorbent for this research work. This is an abundant agro waste product available in all season. Methylene blue is a commonly used cationic dye for colouring, this can cause eye burns in humans and animals, causes methemoglobinemia, cyanosis, irritation to the skin and if indigested can leads to irritation in gastrointestinal tract, nausea, vomiting. According to batch studies it was concluded that adsorption depend on contact time, adsorbate concentration, pH and also adsorbent dosage. The results show maximum dye removal efficiency of 95 -99.659% adsorption for Sulphuric acid treated with Activated watermelon rind. When adsorbate concentration increases accordingly activated carbon adsorbent dosage gets increased. Contact time of 180minutes and pH of 9 was considered as optimum in the present study.
Activated carbon method considered as the most effective adsorption method. This method is widely preferred because of its high performance and cost effectiveness. Extra pores present in the activated carbon has made it more effective in adsorbing the dyes compared to the normal adsorbents. Many low cost adsorbents are available and proved to be efficient to adsorb the dyes and one such adsorbent is Watermelon Rind. 1.1 Objectives of the study: 1)
To prepare Watermelon rind activated carbon.
2)
To investigate Methylene Blue dye removal efficiency using batch method along with efficiency of colour removal.
3)
To evaluate the potential of naturally available adsorbents in adsorption of Methylene Blue dye.
4)
To determine the amount of dye adsorbed by activated watermelon shell powder by varying the pH, contact time and dosage of adsorbent.
Key Words:
Watermelon Rind, Methylene Blue, Adsorbent, Activated carbon, pH, Contact time.
1. INTRODUCTION Wastewater which is discharged from industries contain various kind of contaminants. In that dyes are the major contaminants that are being discharged from industries. Many industries like textile, paper and pulp, cosmetics, pharmaceuticals, food and painting industries release wastewater associated with dyes. Because of its complex composition, high concentration, highly stable and poor biodegradable properties, those dyes are very difficult to remove from the wastewater which is released by different types of industries. In industries like textile, water is used in large quantity which also results in large amount of wastewater that contain dyes. The concentration of dye is very high such that even a less amount of dye which is present in water is detectable and it is not acceptable. Major problem associated with dyes is that these are aesthetically visible in quick succession and reduces the light penetration coming from the sun into the water body causes several health effects such as skin irritation, allergy and any
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2. MATERIALS 2.1 WATERMELON RIND: Watermelon Rind is the hard protective layer of the Watermelon fruit. Watermelon fruit is widely used all over the world mainly China is the biggest producer. The peel which is separated from the fruit is considered as the waste material. The study is done to make use of waste rind in order to abate Methylene Blue dye by the process of adsorption.
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