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    KULIT KACANG TANAH TERMODIFIKASI SURFAKTAN SEBAGAI ADSORBEN ZAT WARNA RHODAMIN B DENGAN VARIASI TEMPERATUR

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    Date
    2018-02-13
    Author
    Bonusa Nabila Huda, 14612032
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    Abstract
    Telah dilakukan penelitian tentang penanggulangan dampak bahaya dari zat warna sintetis Rhodamin B menggunakan adsorben kulit kacang tanah yang termodifikasi surfaktan menjadi bio-sorbent. Bahan dasar adsorben yaitu Kulit Kacang Tanah. Adsorben yang dibuat yaitu Adsorben Tanpa Modifikasi (ATM), Adsorben Modifikasi (AM) dan Adsorben Abu (AA). Adsorben Modifikasi (AM) menunjukkan peningkatan kapasitas dan efektifitas penyerapan Rhodamin B dibandingkan ATM dan AA, hal ini dikarenakan penambahan 0,00025% SDS menyebabkan peningkatan kapasitas adsorpsi stabilitas adsorpsi dari adsorben. Hal ini didapatkan dari data Spektofotometer UV-Vis dengan menggunakan data absorbansi dari larutan Rhodamin B hasil adsorpsi serta GSA untuk mengetahui luas permukaan, total pori dari adsorben. Kapasitas Adsorpsi Adsorben diuji dengan metode flow, dan didapat persentasi adsorpsi sebesar 98% untuk AM, 87% untuk ATM, dan 5% untuk AA. Kapasitas adsorpsi dari adsorben abu tidak optimal untuk menyerap zat warna Rhodamin B, maka AA tidak digunakan untuk prosedur pengujian berikutnya. Kestabilan adsorben diuji dengan variasi temperatur dengan metode batch, dan didapat temperatur optimal untuk adsorpsi bagi AM dan ATM saat suhu 50 ºC dengan persentase adsorpsi sebesar 57% untuk AM, dan 39% untuk ATM. AM dan ATM menganut sistem isoterm adsorpsi langmuir. Hasil titrasi Boehm menunjukkan bahwa permukaan adsorben lebih bersifat asam. The research on surfactant-modified peanut shell for biosorbent was aimed for reducing hazardous synthetic dye waste such as Rhodamin B. There were three kinds of adsorbents have been made, i.e. Non Modifed Adsorbent (NMA), Modified Adsorbent (MA), and Ash Adsorbent (AA). The modified adsorbent (MA) showed the increase in capacity also effectivity for adsorption of Rhodamin B dye rather than NMA and AA, it was because of 0,00025% SDS was added to it, make it more stable for adsorption. The data shown from Spectrophotometer UV-Vis for knowing the adsorption rate. GSA for knowing the surface area, total pore volume from the adsorbent. FTIR for analysing functional group on the adsorbent. SEM-EDX for knowing the morfology also elements on the adsorbent The Adsorption capacity of the adsorbent was tested with flow method and from the data, adsorption percentage for MA was 98%, NMA 87%, and AA 5%. Adsorption capacity for Ash Adsorbent was not very optimal for Rhodamin B adsorption, so it could be concluded AA was not being used for the next analysis. The stability of the adsorben was tested with temperature change using batch method, and the optimal temperature for adsorption in MA and NMA was at 50 ºC with adsorption percentage up to 57% for MA, and 39% for NMA. MA and NMA followed langmuir isotherm. The Boehm test, showed the surface area was more acidic.
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    https://dspace.uii.ac.id/handle/123456789/5651
    Collections
    • Chemistry [734]

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