02801nam a2200253 a 4500 vtls000057565 KUKTEM 20251114204454.0 111219t2010 my a f m 001 0 eng d THE0003791(Local) 201905151502 shah 201112191150 ida UMP TP156.A33 F57 2010 rs Bc. Mohd Firdaus Sudeerman Degradation of nickle from electroplating wastewater by using ultrasonic assisted extraction in addition of HCL / Mohd Firdaus Sudeerman Kuantan, Pahang : UMP, 2010 xvi, 50 p. : ill. (some col.) ; 30 cm. + 1 CD-ROM Project paper (Bachelor of Chemical Engineering) -- Universiti Malaysia Pahang - 2010 Bibliography : p. 37-42 Nickel is one of the heavy metals which are having a high relative atomic mass that can cause an environmental pollution and potential hazard to human health. The method currently practiced for the degradation of heavy metal is by using ultrasonic assisted extraction. Even in low concentration, heavy metal is considered as toxicity and imposes considerable risk on all forms because of their suspected carcinogenic properties. If hazardous compound spreading to environmental, high of energy is needed to treat it and leads to the high of cost operation. Other methods for degradation heavy metals take a longer extraction time. The degradation of nickel from electroplating wastewater was investigates by using 37 kHz ultrasonic cleaner and extraction assisted with solvent, HCl and without solvent. Experiments were carried out at concentration of solvent, HCl (1-3 mol/dm3), sonication time (2-30 minutes), temperature (40-80oC) and volume of solvent, HCl (1-15 mL). The comparison of nickel degradation with solvent and without solvent also has been studied. In presence of solvent, the percentage of nickel degradation was higher than without solvent. The higher percentage of nickel degradation was at 2.5 mol/dm3 of solvent concentration (70.0 % nickel degraded), 20 minutes of sonication time without solvent (69.1 % nickel degraded) and with solvent (77.5 % nickel degraded), temperature was at 60oC without solvent (67.7 % nickel degraded) and with solvent (75.5 % nickel degraded) and volume of solvent was at 2 mL (78.8 % nickel degraded). Finally, the result of the study showed that the nickel degradation increased with increasing solvent concentration, sonication time and temperature of degradation and decreasing volume of solvent. The best condition for all parameter applied was degraded 77.8 % of nickel. Ultrasonic waves Extraction (Chemistry) 0 0 0 1 10000 10000 2019-09-04 0 TP156.A33 F57 2010 rs Bc. 0000060298 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 10000 10000 2019-09-04 0 CD 5537 | TP156.A33 F57 2010 rs Bc. 0000060299 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 2636 2642 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*6501*9992