Fe-Ionic Imprinted Polymer (IIP) from polyeugenol as base polymer and polyethylene glycol diglycidyl ether (PEGDE) as cross-linking agent had been synthesized to adsorb Fe(III) from aqueous media. The non-imprinting material (NIP) and polyeugenol were used in the adsorption study as control. Synthesis work included polymerization, template uploading, crosslinking and template removal, optimized for different template ion upload pH and concentrations. The polymers were characterized by FTIR spectroscopy, XRD and SEM-EDX, followed by adsorption test to study the adsorption kinetics and isotherms for all adsorbents. Selective adsorption study of IIP was carried out using binary mixtures of Fe(III) and Cr(III), Pb(II), Cd(II). Experimental results showed that the optimum conditions for the synthesis was template upload pH of 3, Fe/polyeugenol ratio of 1 mg/g, while the optimum adsorption pH was 3. The adsorption mechanism of Fe(III) on all adsorbents was dominated by hydrogen bond formation. The adsorption kinetics followed the pseudo-second-order model while the equilibrium data was best explained by the Langmuir isotherm model. The adsorption capacity of Fe(III) on the IIP was 12.73 mg/g, higher than that of the other adsorbents. Results also show that IIP-Fe was more selective toward Fe than NIP by 2.69 (Cd), 1.66 (Cr) and 1.6 (Pb) fold, respectively.

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Telah dilakukan sintesis senyawa asam poliuegenoksi asetat dan polieugenoksi asetil piridil karbinolat (suatu turunan polieugenoksi asetat dengan gugus aktif N) dari eugenol. Hasil sintesis digunakan sebagai ekstraktan logam berat dengan metode transport membran cair. Analisis struktur polimer yang terbentuk dilakukan dengan spektrometer infra merah, 1H NMR, KLT, dan uji kelarutan. Penentuan berat molekul relatif polimer menggunakan metode viscometer Ubbelohde. Transport logam dilakukan dengan Membran Cair Ruah (BLM) menggunakan sel gelas tipe U terhadap campuran logam Cu (II), Fe (III), Ni (II), Cd (II), Zn (II), dan Cr (III) kesemuanya dalam bentuk garam klorida. Transport dilakukan pada fasa umpan dan penerima HCl, konsentrasi logam masing-masing 50 ppm. Penentuan konsentrasi ion logam di fasa penerima sebelum dan sesudah transport dilakukan dengan spectrofotometer serapan atom, sedangkan perubahan pH yang menyertai diukur dengan pH meter. Hasil sintesis polieugenoksi asetat dan polieugenoksi asetil piridil karbinolat berupa serbuk amorf berwarna merah bata sampai coklat tua, dengan berat molekul 5.980.854 gram/mol dan 5.602.282 gram/mol. Hasil transport terhadap campuran logam menunjukkan polieugenoksi asetat dan polieugenoksi asetil piridil karbinolat dengan gugus N hasil sintesis mampu mentransferkan  campuran logam ke fasa penerima dengan urutan logam hard  (Cr (III) dan Fe (III)) > logam borderline (Ni (II), Zn (II) dan Cu (II)), logam soft Cd (II).

Kontaminasi air oleh ion logam berat merupakan masalah serius bagi lingkungan dan kesehatan. Kontaminasi ion logam dalam larutan dapat dikurangi dengan adsorpsi menggunakan gel kitosan. Gel kitosan diperoleh dengan melarutkan serbuk kitosan dalam asam asetat. Adanya gugus amina (-NH2) dan hidroksil (-OH) pada kitosan dapat berfungsi sebagai pengikat ion Fe(III) dan Cd(II). Penelitian ini bertujuan untuk membuat gel kitosan dan mengaplikasikan sebagai adsorben ion Fe(III) dan Cd(II) dengan menentukan pH optimum adsorpsi, kapasitas adsorpsi maksimum, dan selektifitas gel kitosan terhadap adsorpsi ion Fe(III) dan Cd(II) dengan variasi pH. Serbuk kitosan dianalisis dengan FTIR untuk menentukan derajat deasetilasi. Gel yang terbentuk digunakan sebagai adsorben Fe(III) dan Cd(II). pH optimum adsorpsi ion Fe(III) dan Cd(II) ditentukan dengan melakukan variasi pH pada 2,8, 3, 4, 5, dan 6. Kapasitas adsorpsi maksimum gel kitosan ditentukan dengan melakukan variasi konsentrasi pada 10 ppm, 30 ppm, 60 ppm, 100 ppm, dan 150 ppm, kemudian hasilnya diinterpretasikan dengan isoterm Langmuir, dan selektifitas gel kitosan terhadap ion Fe(III) dan Cd(II) ditentukan dengan melakukan variasi pH larutan campuran Fe(III) dan Cd(II). Hasil penelitian yang diperoleh adalah gel kitosan dengan ukuran pori sebesar 0,9615-3,2692 μm dari serbuk kitosan yang memiliki derajat deasetilasi 65,53%, pH optimum adsorpsi ion Fe(III) pada pH 4, sedangkan pH optimum adsorpsi ion Cd(II) pada pH 5. Kapasitas adsorpsi maksimum gel kitosan terhadap ion Fe(III) dan Cd(II) masing-masing sebesar 11,574 mg/g dan 8,446 mg/g. Gel kitosan yang diperoleh relatif lebih selektif mengadsorpsi ion Fe(III) dibandingkan dengan ion Cd(II).

Abstract. The separation process using a novel carrier polyeugenol has active groups N and S has been done with the technique BLM. Polyeugenol has groups active N and S was synthesized from eugenol which is then polymerized into polyeugenol. This polymeric compounds was then acidified become acidic poly (eugenoksi acetate). After the acid formed , then the synthesis was continued by add 4-methyl-5-tiazoleetanol to form esters poly (methyl thiazole eugenoxy ethyl acetate) (PMTEEA). IntroductionDue to the discharge of large amounts of metal-contaminated wastewater, industries bearing heavy metals, such as Cd, Cr, Cu, Ni, As, Pb, and Zn, are the most hazardous among the chemical-intensive industries. Because of their high solubility in the aquatic environments, heavy metals can be absorbed by living organisms. Once they enter the food chain, large concentrations of heavy metals may accumulate in the human body. If the metals are ingested beyond the permitted concentration, they can cause serious health disorders [1].One method for separating metal ions are liquid separation membrane [2]. In the liquid membrane technique, carrier compounds play an important function. Compounds carrier as a facilitator is determinant in the separation performance from the feed phase. A carrier compounds should has high ability to extraction via stable complex formation within the membrane, having high selective separation towards certain species, has good solubility as well as diffusion coefficient in the suitable organic solvent (membrane) and can be used in relatively a small amounts [3]. Besides that, a selectivity compounds carrier towards certain metal ions determined by the active groups on the carrier compound.Carrier compounds will form complexes with metal ions through chemical bonds between the active group with a metal ion, this establishment is based on the theory HSAB (Hard and Soft Acids Bases), this theory states that in general the metal acid hard ions (such as alkali, alkali earth, and Cr 3+ )