Pengaruh pH dan temperatur terhadap elektrodekolonisasi indigo carmin menggunakan elektrode karbon dan aluminium bekas

K u w a t n o , K u w a t n o (2005) Pengaruh pH dan temperatur terhadap elektrodekolonisasi indigo carmin menggunakan elektrode karbon dan aluminium bekas. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Penggunaan zat wama Indigo carmine oleh industri tekstil dalam proses pewarnaan akan menghasilkan limbah yang dapat mencernari lingkungan. Logam aluminium bekas juga dapat menyebabkan pencemaran lingkungan karena sulit terdegradasi oleh tanah. Oleh karena itu dalam penelitian ini dilakukan pengurangan wama indigo carmine dari larutannya secara elektrolisis menggunakan elektroda aluminiumdan karbon bekas. Dengan demikian pencemaran akihat dari kedua bahan pencemar tersebut dapat diatasi. Penelitian ini mempelajari pengaruh pH dan temperatur terhadap proses elektrodekolorisasi indigo carmine. Proses ini dilaksanakan dengan memvariasi pH dan temperatur dad sistem elektrolisis. Selama elektrolisis berlangsung terjadi elektrokoagulasi/elektroflokulasi karena kemampuan flok Al(OH)3 dalam mengadsorbsi indigo carmine dan kemampuannya dalam inembentuk kompleks Al-indigo carmine. Flok AI(OH)3 dihasilkan dari elektrolisis selama 150 menit, jaraic elektroda 1 cm dengan katoda karbon dan anoda aluminium dan potensial eksternal 12 volt. Analisa yang dilakukan dalam penelitian ini meliputi analisa kualitatif dan kuantitatif Analisa kualitatif dilakukan dengan pengamatan wama larutan basil elektrolisis dan endapan yang terbentuk, sedangkan analisis kuantitatif dilakukan dengan pengukuran absorbansi filtrat larutan sampel setelah elektrolisis dengan menggunakan Spektrofotometer 390. Pada temperature katnar, Vasil menunjukkan bahwa indigo carmine dapat terdekolorisasi secara minimum pada pH 6 dan cenderung meningkat dalam keadaan semakin asam maupun semakin basa. Dan maksimum pada pH 14 dengan persentase elektrodekolorisasi sebesar 51,95 %. Temperatur optimtunnya dad elektrolisis pada pH 10 adalab. 70°C dengan persentase eletrodekolorisasi sebesar 98,33 %. The usage of Indigo carmine dye for textile industry in course of coloration will generate liquid waste that can contaminate the environment. Metal of ex-aluminium can also an pollute the environment because it is difficult to be ravelled by land. Therefore in this research is done electrodecolorization of indigo carmine dye by using ex-aluminium and ex-carbon electrode. Thereby the pollution of environment caused by the both pollutants can be overcome. This research studied the influence of pH and temperature to the process of electrodecolorization of indigo carmine dye. This process was done by varying of pH and temperature of system electrolysis. During the process electrolysis, It had been observed, that there were two process called electrocoagulation and electroflocculation because of the ability of Al(OH)3 flock in adsorbing indigo carmine and its ability in forming Al-indigo carmine complex. Al(OH)3 flock was produced by the electrolysis of sample solution for 150 minutes, with the distance of electrode is 1 cm from aluminum anode and carbon cathode and the external potential is 12 volt. The analysis done this research comprises a qualitative and quantitative analysis. Qualitative analysis was done with the observation of the solution colour intensity produced in electrolysis and the formed sediment, while the quantitative analysis one was done with the measurement of filtrat absorbance of sample solution after electrolysis by using Spectrophotometer 390. At room temperature, the result shows that the ability of decolorizing indigo carmine dye is minimum at pH 6 and tend to increase in base and acid condition. and maximum at pH 14 with percentage of electrodecolorization is 51.95 %. The optimum temperature at electrolysis at pH 10 is 70'C with percentage of electrodecolorization 98.33 %.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:30872
Deposited By:Mr UPT Perpus 1
Deposited On:08 Nov 2011 12:33
Last Modified:08 Nov 2011 12:33

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