Use of Aloe Vera as Coagulant aid in Turbidity Removal

Use of Aloe Vera as Coagulant aid in Turbidity Removal

International Journal of Engineering Research and Technology. ISSN 0974-3154 Volume 10, Number 1 (2017) © International Research Publication House http://www.irphouse.com

GulmireAmruta
M.Tech. Student in Environmental Engineering, Department of Civil Engineering,

Walchand College of Engineering. Sangli, Maharashtra, India

G.R. Munavalli

Associate Professor, Department of Civil Engineering, Walchand College of Engineering.
Sangli, Maharashtra, India

Abstract

Water is an important resource for the survival of life. This study focused on developing an efficient and cost-effective processing technique by using Aloe Veragel to produce natural coagulant for use in drinking water treatment. In this study Aloe Veragel is used as coagulant aid with alum for turbidity removal. Aloe Veraplant contains around 75 nutrients and 200 active compounds including minerals, amino acids, enzymes and vitamins. Use of Aloe Veragel as coagulant aid with can effectively reduce the amount of alum required. For high turbid water removal efficiency was found to be 76-81% and for low turbid water it was found 60-65%. Also it was found that Aloe Vera has less effect on other water quality parameters like pH, EC, hardness. Use of Aloe Veragel with alum as a coagulant aid can be new alternative for drinking water treatment.

Introduction

Water is a precious and essential natural resource, unevenly distributed on our planet. Freshwater represents only 2.5% of global supplies of water. About 70% of this freshwater quantity are either trapped under ice caps, or disseminated inthe form of humidity or steam. Less than 1% of the world’s freshwater, about 0.007% of planet’s waters, are easilyaccessible to the various uses for development [1]. In the field of water, our country is faced with two mains and majors problems which are: quantity and quality of the drinking water and evacuation of sewage or waste water. Also, water treatment is very expensive for developing countries and requires the use of synthetic products which are not without impact on consumer health [4].

The use of natural resources in the process of water treatment, thus constitutes a potential promising ways to reduce on one hand, the high costs and environmental impacts due to the use of synthetic products used previously, and secondly allow as many people as possible access to drinking water. This will constitute therefore a major economicissue for developing countries [2].In conventional method of coagulation and

flocculation alum, ferric chloride, ferrous sulphate were used as coagulant for effective removal of turbidity.But in one of the research it is found that continuous use of alum has caused several problems affecting human health. It is found thataluminium is one of the causes for Alzheimer’s syndrome [5].So this study is mainly focused on decreasing alum dose with use of Aloe Vera gel.

Aloe Vera specifically refers to the Aloe barbadensis Miller plant. Aloe Vera is the oldest medicinal plant ever known and the most applied medicinal plant Worldwide. This is a perennial tropical plant that can be cultivated in drought prone areas. In India, it is scattered in the wild, along the coast of southern India. It is a stem less or very short- stemmed succulent plant growing to 60–100 cm (24–39 in) tall, spreading by offsets. The leaves are thick and fleshy, green to grey-green, with some varieties showing white flecks on their upper and lower stem surfaces[3].Aloe Veraplant requires very less water for its growth as it contains 98% of water in its leaves. It contains around 75 nutrients and 200 active compounds including minerals, amino acids, enzymes and vitamins[4].

In this study, in order to expand the range of natural flocculants used in water clarification properties of Aloe Veragel were analyzed. This study also focuses on use of Aloe Veragel as coagulant aid with alum for the treatment of low and high turbid water.

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