Global Journal of Human-Social Science, B: Geography, Environmental Science and Disaster Management, Volume 22 Issue 3

There are two kinds of coagulants; inorganic and organic coagulants. Inorganic coagulants (such as Alum, Ferric chloride etc.) are the most commonly used in coagulation treatment of leachate. The use of organic coagulants (M. oleifera seed, Phaseolusvulgaris seed, etc.) is not as common as the inorganic coagulants. The Moringa Oleifera tree grows in tropical and subtropical regions around the world and its seeds have been used in drinking water treatment in small scale in Sudan and India for generations. Coagulation studies are usually carried out using jar test equipment. The jar test has been the typical technique used in wastewater and drinking water industry to improve the addition of coagulant and flocculants (Silver et.al ., 2004). This paper seeks to investigate the efficiency of M. oleifera and compare the differences in the removal efficiency of alum, ferrous sulphate and ferric chloride to M. oleifera as coagulants in removing physicochemical parameters of leachate. Also to assess the effect of pH on the effectiveness of coagulants in leachate treatment and determine the pollution level of leachate samples by determination of water quality parameters. II. M aterials and M ethods a) Study Area The study area Saje is located in Abeokuta North Local Government of Abeokuta, the capital of Ogun State, South-West Nigeria. Abeokuta covers an approximate area of about 40.63 km 2 . Saje dumpsite lies between latitude 7 ⁰ 09' N – 7 ⁰ 19' N and longitudes 3 ⁰ 29' E – 3 ⁰ 41' E (Ufoegbune et.al ., 2008). The Saje dumpsite (figure 1) established in 2006 was formerly a quarry, where mining was done over a long period of time for granites. In order to reclaim the site the state government decided to use the quarry as dumpsite. The dumpsite is the only major dumpsite used in Abeokuta metropolis and is about 4 ha in area. Saje area was formally an outskirt of Abeokuta town but due to increased population of the metropolis, houses have encroached the site of the dump site (Badejo et.al ., 2013). The location coordinate of the dumpsite was obtained with a hand held Global Positioning System (GPS, Garmin MAP 76CSx model made in Taipei County, Taiwan) with position accuracy of less than 3m. The choice of the sampling points within the dumpsite was considered using the following criteria: location, accessibility and availability of leachate. Figure 1: Saje Dumpsite Location within Abeokuta City, Ogun State, Nigeria. Volume XXII Issue III Version I 56 ( ) Global Journal of Human Social Science - Year 2022 © 2022 Global Journals B Abatement of Polluting Effects of Waste Dump Leachates using Different Coagulants