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Journal : Al-Kimia

Penggunaan Epiklorohidrin Dalam Meningkatkan Stabilitas Adsorben Kitosan Berikatan Silang Dan Kitosan Tercetak Ionik Kobal Muhammad Qaddafi; Abd. Wahid Wahab; Nursiah La Nafie; Paulina Taba
Al-Kimia Vol 2 No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1172.956 KB) | DOI: 10.24252/al-kimia.v2i2.1641

Abstract

The use of epichlorohydrin to improve the stability of chitosan adsorbent has been carried out. The purpose of this study was to determine the stability of the chitosan adsorbent after modified into epichlorohydrin cross-linked chitosan and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. Adsorbent prepared by homogeneous gel formation of chitosan in acetic acid medium and then modified into epichlorohydrin cross-linked chitosan beads and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. Stability of the adsorbent was determined by calculating the percentage of insoluble material after stirring the adsorbent in nitric acid medium at pH 1, 2, and 3 for 12 hours. The results of FTIR spectra show a shift of the absorption band of chitosan were compared with epichlorohydrin cross-linked chitosan and ionic cobalt imprinted adsorbent chitosan cross-linked epichlorohydrin. The use of epichlorohydrin as cross-linked agent may increase the stability of the adsorbent to maintain the percentage of insoluble material by 89% at pH 3 for epichlorohydrin cross-linked chitosan adsorbent and 96% at pH 3 for ionic cobalt imprinted adsorbent chitosan  cross- linked epichlorohydrin.
Pengaruh pH dan Waktu Terhadap Kemampuan Adsorpsi Mip_TFMAA-co-Egdma St. Fauziah; Nunuk Hariani Soekamto; Muh. Bachri Amran; Paulina Taba
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.69 KB) | DOI: 10.24252/al-kimia.v3i2.1673

Abstract

A molecularly imprinted polymers (MIP) can be synthesized using functional monomers and template molecules through polymerization with the aid of cross linker. In previous studies, MIP_TFMAA-co-EGDMA was synthesized using the main ingredient tryfluoromethylacrylic acid (TFMAA) as functional monomer, b-sitosterol as a template molecule and ethyleneglycol dimethacrylate (EGDMA) as cross linker. The ability of adsorption against the effects of pH and contact Time of MIP has been evaluated. Variations of pH standard solution b-sitosterol were 4, 5, 6, and 7, while the time variation used were 30, 60, 90, and 120 minutes. The data of b- sitosterol concentrations adsorbed by MIP_TFMAA-co-EGDMA because of the influence of pH and contact times were analyzed using high pressure liquid  chromatography (HPLC). pH5 gives the most influence on the adsorption capacity MIP_TFMAA-co-EGDMA against b-sitosterol. The number of b-sitosterol adsorbed on the pH was 1.0265 mg/g, while at 90 minutes was the best time for the MIP b- sitosterol adsorb as much as 1.3486 mg/g. Based on the adsorption kinetics study, the adsorption ability MIP_TFMAA-co-EGDMA against b-sitosterol in accordance with the pseudo second order kinetic model.
Co-Authors Abd. Wahid Wahab Abdul Karim Abdul Wahid Wahab Abdul Wahid Wahab Abubakar, Andi Nur Fitriani Ahmad Fudhail  Majid Ahmad Zaini Ahyar Ahmad Alfian Noor Alfian Noor Amin, Ida Ifdaliah Andi Arwita Gau Andi Muhammad Anshar Andi Suciati Andi Yanti Puspita Sari Anita Anita Arfah, Rugaiyah A. Arfiani Nur Arif, Ainun Rezkiva Azis, Hijrah A. Bulkis Musa Burhanuddinnur, Muhammad Djabal Nur Basir, Djabal Djasmawati Mahmud Emma Suryati Emmi Astuti Fadliah, Fadliah Fatahu, Fatahu Fausan Sullahi Firdaus Firdaus Firdaus Firdaus Firdaus, Firdaus Gappa, Maming Graine Moran Harningsih Karim Harningsih Karim Hasnah Natsir Hasnah Natsir Hazirin Zubair Hazirin Zubair, Hazirin I Wayan Sutapa Indah Raya Indah Raya Indrawati Patabang Irfandi, Rizal Jarnuzi Gunlazuardi Kasturiasih, Ni Putu Khairunnur, Siti Kolo, La La Kalamu, La Yusran La Kolo La Kolo Malimongan M Maming Maming Gaffar, Maming Maming Maming Miftahul Jannah Miftahul Jannah Misriyani Misriyani Muh. Bachri Amran Muhammad Qaddafi Muhammad Zakir Muhammad Zakir Munadi, Rachmin Musa, Bulkis Novi Lestari Nunuk Hariani Soekamto Nunuk Soekamto Nur Afni Nur Haedar Nur Umriani Permatasari NURAENI, ANDI Nuritasari Azis Nurmala Sari Nursiah La Nafie Nursiah La Nafie Nursiah La Nafie Nursiah La Nafie Nursiah La Nafie Parmitha, Nadya Yuli Permatasari, Nur Umriani Prastawa Budi Prastawa Budi Prayiska Mariana Rapi Putri, Tri Widayati Ramadani, Ananda Rasyid, Herlina Ridwan, Irham Pratama Rino R. Mukti Romi Anto Rosalinda Zeniona Maarebia Ruslan Ruslan Russell F. Howe S, Giovanno Alvin Saefuddin ., Saefuddin Sahidin . Sahriani Ali Samriani Samriani Sari, Andi Y.P. Sarlan, Sarlan Seniwati Dali Seniwati Dali Sernita, Sernita SITI HALIMAH LAREKENG, SITI HALIMAH Sopiarini, Putri St. Fauziah St. Fauziah Sulistiani Jarre Suriati Eka Putri Syaharuddin Kasim Syahruddin Kasim Syamsiar, Syamsiar Syarifuddin Liong Syarifuddin Liong Ta'bi, Widi Aprilia Tahril Tanasal A.M Tjodi Harlim Triana Febrianti Yasser, M Yusafir Hala Zarlina ., Zarlina