International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023
p-ISSN: 2395-0072
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REMOVAL OF CADMIUM FROM INDUSTRIAL WASTE WATER USING CILANTRO (Coriandrum Sativum) AS ADSORBENT Anjali M Nair1, Muhammad Fayis T2, 1M.Tech student, Environmental Engineering, Dept. of Civil Engineering, M-Dasan Institute of Technology, Kerala,
India
2Assistant Professor, Dept. of Civil Engineering, M-Dasan Institute of Technology, Kerala, India
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Abstract – The Laundry that produce waste water that
treatment methods for example; membrane processes, coagulation, precipitation, sedimentation, filtration, flotation, biological methods, chemical processes, electrochemical method ion exchange and adsorption; with various degree of successes leads to elevated dramatic outcomes in the scientific world. Adsorption is a surface process in which multi-component fluids are attached to the surface of a solid adsorbent, forming chemical or physical bonds. It is being recognized as one of the widely applied and most efficient fundamental approach in contaminated water treatment methods which mainly revolves on its technical feasibility, economical viability, socially acceptable and simplicity. Although, many more techniques can be used in treatment of inorganic wastes, the best method should not only be appropriate, suitable and applicable locally, but also be of the maximum contaminant standards. Activated carbon, an adsorbent with controllable pore structure, thermally stable, low base/acid reactivity, large and porous surface area use has been witnessed, in terms of its applicability in eliminating of different types of chemical waste dissolved in water and in gaseous products. Despite the prolific application in adsorption processes, the major disadvantage of its use in the industries lies in the high cost and difficulties related on how to regenerate it. As a result of the above complications, more research to evaluate suitable and feasible renewable low cost natural materials like peat, bamboo waste, fungi, lignite, bark, moss, husks, coir piths, tea leaves, maize cobs, rice husks, and sago wastes as an alternative adsorbents for heavy metals decontamination has been intensified.
contain cadmium which is a heavy metal and which contributes to pollution. This study investigates the adsorption of cadmium from the waste water by using cilantro as an adsorbent. The efficiency of the plant is tested by using batch study and column study. Study will research the effect of some primary operating parameters such as Adsorbent dosage, contact time and pH on the adsorption capacity of the plant. The column studies was performed by passing the waste water through a column setup having a diameter of 5cm and length 45 cm. The water sample will pass through the filter media through the column and the water was tested at different time interval and the removal efficiency of cadmium was calculated. Flow rate and bed depth are the two parameters used in column studies. The cadmium removal by the dry cilantro leaves was 69.3%.And the adsorption capacity of cadmium by the cilantro plant is 65 to 75% respectively. Key Words: Cadmium, Cilantro plant, Batch study, Column Study, Adsorption capacity
1.INTRODUCTION Cadmium is an extremely toxic industrial and environmental pollutant classified as a human carcinogen. The textile wastewater contributes heavy metals like cadmium to the environment. This leads to the ability of the environment to foster life being reduced as human, animal, and plant health become threatened. This occurs due to bioaccumulation in the food chains as a result of the non-degradable state of the heavy metals. Remediation of heavy metals requires special attention to protect soil quality, air quality, water quality, human health, animal health, and all spheres as a collection. Developed physical and chemical heavy metal remediation technologies are demanding costs which are not feasible, time-consuming, and release additional waste to the environment.
Adsorption utilizes nonliving biomasses to eliminate heavy metals ions from water, is a biological phenomenon that can be explained by different types of physical and chemical relations among the heavy metals ions and different functional groups that are on the cellular wall. The active sites on cell wall can vary according to the type of the biosorbent material. This study investigated cilantro plant as potential adsorbent to eliminate cadmium and lead ions from simulated contaminated water.
Heavy metals and dye pigments used in the production in the textile industries can exist in the structures of textile fabrics and can penetrate into fibers and these can be transferred to the environment which are high in toxic and can bioaccumulate in the water life, water bodies and also traps in the soil. Developing research on a different
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