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Defluoridation of Groundwater's of Darsi Mandal, Prakas District, Am Andhra Pradesh by Using Natural Adsorbents

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Defluoridation of Groundwater's of Darsi Mandal, Prakas District, Am Andhra Pradesh by Using Natural Adsorbents International Journal of Civil Engineering and Technology (IJCIET) Volume 9, Issue 4, April 2018, pp. 993–999, Article ID: IJCIET_09_04_112 Available online at http://iaeme.com/Home/issue/IJCIET?Volume=9&Issue=4 ISSN Print: 0976-6308 and ISSN Online: 0976-6316 © IAEME Publication Scopus Indexed DEFLUORIDATION OF GROUNDWATER’S OF DARSI MANDAL, PRAKASAM DISTRICT, ANDHRA PRADESH BY USING NATURAL ADSORBENTS G. Babu Rao Assistant Professor, Department of Civil Engineering, Narasaraopeta Engineering College, Guntur, Andhra Pradesh, India A.V. Rama Raju Assistant Professor, Department of civil Engineering, Bapatla Engineering College, Guntur, Andhra Pradesh, India S. Kanakambara Rao Associate Professor, Department of Civil Engineering, Narasaraopeta Engineering College, Guntur, Andhra Pradesh, India ABSTRACT The study area is a mandal in the Prakasam District lies between 150.76’67’’ N and 79068’33’’ E long. The study area is bounded in the by Mundlamuru and Vinukonda mandals in the North, Podili and konakanamitla mandals in the south, Kurichedu and Donakonda mandals in the west and by Talluru and Chimakurthy mandals in the east directions respectively. Fluorine is the most electronegative element present in the earth’s crust. It is present in the form of fluorides in a number of minerals and in many rocks. Fluoride enters into the groundwater mainly by geogenic and anthropogenic actions. Fluoride in drinking water has dual effects (beneficial and harmful) on human health. It is essential in minute quantities for proper growth of bones and teeth in humans. Keywords: Groundwater, Darsi Mandal, Natural Adsorbents Cite this Article: G. Babu Rao, A.V. Rama Raju and S. Kanakambara Rao, Defluoridation of Groundwater’s of Darsi Mandal, Prakasam District, Andhra Pradesh by using Natural Adsorbents, International Journal of Civil Engineering and Technology, 9(4), 2018, pp. 993–999. http://iaeme.com/Home/issue/IJCIET?Volume=9&Issue=4 1. INTRODUCTION Fluorine is the most electronegative element present in the earth’s crust. It is present in the form of fluorides in a number of minerals and in many rocks [1]. Fluoride enters into the http://iaeme.com/Home/journal/IJCIET 993 [email protected] Defluoridation of Groundwater’s of Darsi Mandal, Prakasam District, Andhra Pradesh by using Natural Adsorbents groundwater mainly by geogenic and anthropogenic actions [2]. Fluoride in drinking water has dual effects (beneficial and harmful) on human health. It is essential in minute quantities for proper growth of bones and teeth in humans. When its concentration is high, it may lead to dental and skeletal fluorosis. It even leads to damage the brain, liver, and kidney, headache, skin rashes, bone cancer, and even death in extreme cases. The maximum permissible limit of fluoride in water may vary depending up on climatic condition. In India it is 1.5 mg/L as per WHO standards [3, 4]. It is estimated that around 260 million people around the world (in 30 countries) are effected by consuming Fluorinated water (>1.0 mg/L; [5]). In India alone, endemic Fluorosis is thought to affect around one million people and is a major problem in 17 of the 29 states, especially Rajasthan, Andhra Pradesh, Tamil Nadu, Gujarat and Uttar Pradesh. Approximately, 62 million people, including 6 million children suffer from fluorosis in the country due to consumption of F--contaminated water [6]. In Andhra Pradesh, the highest F-- affected villages are approximately 195 in Prakasam district of Andhra Pradesh [7]. The first case of endemic fluorosis in the country was reported as long as 1937 in the Prakasam district (a part of erstwhile Guntur district; [8]. There are so many unnoticed F--contaminated groundwater areas in the district. Defluoridation techniques can be broadly classified into two types. They are i) Additive methods, and ii) Adsorptive methods. The methods which are in existence are can be classified into adsorption, Ion exchange, Precipitation and Miscellaneous methods. Adsorption methods by using different adsorbents like sunflower plant dry powder, steam of phytomass, Holly Oke, neem bark powder, activated cotton jute carbon, bagasse ash, burnt bone powder, phosphate-treated saw dust, bone char, etc. came into existence [9]. The present study aims in identifying the fluoride levels of the groundwater in the study area and also effective de-fluoridation by using different natural and low cost-materials. 2. STUDY AREA The study area is a mandal in the Prakasam District lies between 150.76’67’’ N and 79068’33’’ E long. The study area is bounded in the by Mundlamuru and Vinukonda mandals in the North, Podili and konakanamitla mandals in the south, Kurichedu and Donakonda mandals in the west and by Talluru and Chimakurthy mandals in the east directions respectively. 3. MATERIALS AND METHODS About 20 groundwater samples were collected in different locations of the study area in water tight plastic containers. 4. METHODOLOGY The fluoride in the water is measured by using following SPADNS method using a SYSTRONICS-105 spectrophotometer [10]. The fluoride standard sample was prepared in the range of 1 mg/L to 5 mg/L by taking appropriate quantities of standard fluoride solution with distilled water. Then pipette 5 ml each of SPADNS solution and zirconyl acid solution to each standard and mixed well. The spectrophotometer was set to zero absorbance with reference solution and absorbance readings of standard were obtained. Reference solution was used as a blank solution. The wave length of spectrophotometer is taken at 570 nm. The analysis was conducted at room temperature (290±20C). http://iaeme.com/Home/journal/IJCIET 994 [email protected] G. Babu Rao, A.V. Rama Raju and S. Kanakambara Rao 4.1. Preparation of Adsorbents Four adsorbents were prepared individually by using natural and low cost materials. The adsorbents are 1. Mixture of the bark of moringa olifera and emblica officinalis (amla), the roots of vetiveria zizanoides (vattiveru) and the leaves of cyanodan tactylon (garika) 2. Rice husk powder 3. Tulasi leaves powder 4. Chalk powder 4.2. Preparation of Adsorbents A mixture of the bark of moringa olifera, emblica officinalis (amla), the roots of vetiveria zizanoides (vattiveru) and the leaves of cyanodan tactylon (garika) were collected, washed and dried. The dried material is made in to powder. Then it is passed through the standard sieve 150 and 300 micron and finally it is collected at bottom and is used as adsorbent. Rice husk obtained after sieving through the IS 150 and 300 micron sieves are used as another adsorbent. Tulasi leaves powder collected from plants was used as another adsorbent. Before powdering they were pre-washed with water and dried at room temparature. Then the leaves are crushed by using domestic blender and sieved through 600 micro meter stain–less steel sieve. Chalk powder, form of calcium carbonate with minor amount of silt and clay is collected from classrooms is used as an adsorbent. After the addition of adsorbent, the coagulant activity with one minute of rapid mixing and 15 minutes of slow mixing for flocculation and 60 minutes of settling is done [11]. Then it is followed by rough filtration, rapid sand filter and double filtration that mainly reduces the fluoride content. 5. RESULTS AND DISCUSSION Table 1 Concentration of Fluoride in the study area S.No Viilage Fluoride(mg/L) 1 Mareddypelem 2.0 2 Pothavaram 3.20 3 Pulimivaripalle 14.0 4 Rajampalli 1.40 5 Ganesh puram 3.40 6 East Venkatapuram 3.0 7 Kattasingannapalem 3.60 8 Lankojanapalli 2.60 9 East Chowtapalem 2.20 10 Yerraobanapalli 2.0 11 Bandiveligandla 4.60 12 Battuvaripalli 12.0 13 Ramachandrapuram 1.20 14 Sai nagar 5.20 15 Darsi 1.60 16 Thummedalapadu 7.0 17 Samanthapudi 1.40 18 V.C.palli 3.60 19 Chandaluru 5.6 http://iaeme.com/Home/journal/IJCIET 995 [email protected] Defluoridation of Groundwater’s of Darsi Mandal, Prakasam District, Andhra Pradesh by using Natural Adsorbents 20 Tanamchintala 6.3 The F- concentration in the study area varies from 1.20 to 14 Mg/L, with an average of 4.30 mg/L The highest F- concentration 14.0 mg/L is observed in Pulimivaripalle Village, where as the lowest concentration 1.20 mg/L is noticed in Ramachandrapuram village (Table1). The experimental analysis was carried out by treating the groundwater with different adsorbents separately. The F--content in the groundwater is measured after specific contact time (15 m, 30 m, 1 hr, 3 hrs, 6hrs, 12 hrs and 24 hrs) with the adsorbent. F- concentration is also measured by increasing the adsorbent dosage (1 gm, 3 gm, 5 gm, 10gm). For experimental analysis highest F- (14 mg/L) concentration water sample was utilized. 5.1. Mixture A mixure of the bark of moringa olifera and emblica officinalis(amla), the roots of vetiveria zizanoides( vattiveru) and the leaves of cyanodan tactylon ( garika) was used because moringa Oleifera as an added advantage over the chemical treatment of water because it is biological and has been reported as edible. Powdered sample of mixture is collected after passing through the sieve is utilized for experimental work. Previous research works suggest that the pores present in the organic and inorganic pollutants from aqueous solution with adsorbent mixture [12]. After 15 mints, 30 mint, 1 hr, 3 hr, 6 hr, 12 hr and 24 hrs of contact time with the mixure of the bark of moringa olifera and emblica officinalis(amla), the roots of vetiveria zizanoides( vattiveru) and the leaves of cyanodan tactylon ( garika), the F- value has reduced from 14 mg/L to 12.2, 11.2, 10.4, 9.7, 8.1, 7.6 and 6.4 mg/L respectively. There was gradual decrease in the efficiency of fluoride % from 13 to 54 with increase in contact time (Table 2).
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