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• W2186572989 abstract "In this study, efficiency of coagulation-flocculation process was evaluated forleachate collected from Pasir Gudang sanitary landfill, Johor, Malaysia. Theefficiency of coagulation-flocculation process using micro zeolite and micro sand ofdifferent sizes and combined with coagulants and coagulant aids were determined. Inaddition, the optimum rapid mixing time and speed, slow mixing time and speed,settling time of coagulants, settling time of coagulants with polymer, settling timewith polymer and micro zeolite, settling time of coagulants with polymer and microsand, pH, dose of coagulants, dose of coagulant aids and dose of micro zeolite andmicro sand were determined. The efficiency of using polyaluminium chloride (PAC)as a coagulant in the coagulation-flocculation process to remove SS, colour, CODand ammoniacal nitrogen from semi-aerobic leachate as compared with alum andferric chloride were also determined. PAC showed better removal efficiencies whencompared with ferric chloride and alum. The doses of PAC, alum and ferric chloridewere fixed at 2000 mg/L in the determination of the efficiency of micro zeolite andmicro sand. The highest percentage of removal in SS, colour, COD and ammoniacalnitrogen were 96%, 95%, 58% and 35% for PAC, 89%, 92%, 46% and 26% for alumand 96%, 84%, 37% and 26% for ferric chloride. The leachate was also treated byadding coagulant aids, cationic polymer FO4290 SH and anionic polymer AN934SH. Cationic polymer FO4290 SH achieved higher percentage of removal of SS,colour, COD and ammoniacal nitrogen compared with anionic polymer AN934 SH.The particle sizes of the micro zeolite and micro sand was divided into 6 categorieswhich were 75µm-90 µm, 91 µm -106 µm, 107 µm -125 µm, 126 µm -150 µm, 151µm -180 µm and 181 µm -212 µm. The micro zeolite was combined with thecoagulant and coagulant aid. The process was repeated by using micro sand. Micro zeolite combination with PAC and cationic polymer (PAC + cationic polymer +micro zeolite) was found to be more efficient in leachate treatment." @default.
• W2186572989 created "2016-06-24" @default.
• W2186572989 creator A5003271961 @default.
• W2186572989 date "2013-03-01" @default.
• W2186572989 modified "2023-09-27" @default.
• W2186572989 title "TREATMENT OF LANDFILL LEACHATE IN COAGULATION- FLOCCULATION METHOD BY USING MICRO ZEOLITE AND MICRO SAND" @default.
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