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All Journal IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Kimia Riset
Mochammad Zakki Fahmi
Departemen Kimia, Fakultas Sains Dan Teknologi, Universitas Airlangga
Chemistry Computer Science & IT

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Kinetics of Hg and Pb Removal in Aqueous Solution Using Coal Fly Ash Adsorbent Eko Prasetyo Kuncoro; Mochammad Zakki Fahmi
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2014i1.448

Abstract

The objective of this research was to investigate the kinetics aspect of Hg and Pb adsorption using coal fly ash. A series of a Hg and Pb adsorption experiment using coal fly ash with contact time variation was carried out. The results were plotted to pseudo first order kinetic, pseudo second order kinetic and intra-particle diffusion model. High values of R2 were obtained from the plots of kinetics model for both heavy metals investigated, these values exceeded 0,8. The conclusion obtained was that Hg adsorption kinetics followed pseudo second order kinetic model while Pb adsorption kinetics followed intra-particle diffusion.
Kinetics of Hg and Pb Removal in Aqueous Solution Using Coal Fly Ash Adsorbent Eko Prasetyo Kuncoro; Mochammad Zakki Fahmi
IPTEK The Journal for Technology and Science Vol 25, No 3 (2014)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v25i3.480

Abstract

Water pollution caused by heavy metals is a serious problem to environment. Hg and Pb are heavy metals having high toxicity level. Heavy metals treatment is necessary before releasing them to environment. The use of adsorption method is interesting because of its relatively simple operation. The development of adsorption is oriented to the use of industrial waste such as coal fly ash. The objective of this research is to investigate the kinetics aspect of Hg and Pb adsorption using coal fly ash. A series of a Hg and Pb adsorption experiment using coal fly ash with time variation was carried out. The results were plotted to pseudo first order kinetic and pseudo second order kinetic model. The conclusion obtained was that Hg and Pb adsorption kinetics followed pseudo second order kinetic model
STUDI PELEPASAN TERKONTROL TERHADAP NANOENKAPSULASI DIMETOKSI AMINO CALKON SEBAGAI DESAIN KANDIDAT SENYAWA ANTI KANKER YANG EFEKTIF Mochamamad Zakki Fahmi; Hery Suwito; Shofi Yasmin Nurain; Yogi Putra Hidayatullah
Jurnal Kimia Riset Vol. 1 No. 2 (2016): Desember
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1258.531 KB) | DOI: 10.20473/jkr.v1i2.3089

Abstract

ABSTRAKEnkapsulasi merupakan sebuah proses dimana partikel kecil dikemas dalam sebuah partikel yang lebih besar sehingga membentuk kapsul. Metode tersebut akan digunakan untuk memodifikasi calkon, senyawa anti kanker yang memiliki kelarutan dalam air sangat rendah, dengan menggunakan Bovine Serum Albumin sebagai enkapsulan. Modifikasi senyawa calkon ini dilakukan dengan mencampurkan larutan BSA dalam air dan larutan calkon dalam kloroform kemudian diultrasonikasi. Senyawa hasil sonikasi tersebut disebut produk nanoenkapsulan BSA-calkon. Produk selanjutnya diuji ketahanannya terhadap perubahan pH, penambahan garam dan suhu. Produk kemudian dikarakterisasi menggunakan spektrofotometer UV-Vis, FTIR dan DLS. Proses nanoenkapsulasi dapat dikatakan berhasil dilakukan, ditunjukkan dengan produk nanoenkapsulan BSA-calkon yang dapat larut dalam air. Hasil karakterisasi menggunakan DLS menunjukkan bahwa produk nanoenkapsulan BSA-amino calkon memiliki rata-rata diameter partikel sebesar 457,5 nm dan 201,0 nm untuk produk nanoenkapsulan BSA-dimetoksi amino calkon. Hasil FTIR dari nanoenkapsulan BSA-amino calkon memunculkan serapan gugus amida pada 1639,55 cm-1. Sedangkan pada nanoenkapsulan BSA-dimetoksi amino calkon, gugus amida muncul pada serapan 1635,69 cm-1.Kata kunci : Nanoenkapsulasi, calkon, Bovine Serum Albumin, anti kanker.ABSTRACTEncapsulation is a process where a small particles packaged in a larger particles and it forms into a capsule. This method will be used to modify chalcone, an anticancer compound that have very low solubility in water. So it can’t be applied into human bodies. This chalcone will be encapsulated by Bovine Serum Albumin. Modification of chalcone is carried out by mixing a BSA solution in water and chalcone solution in chloroform by an ultrasonication process. The product will be tested for the resistance of pH, salt addition and temperature. The products also characterized using UV-Vis, FTIR and DLS instruments. Nanoencapsulation process was successfully do, it’s indicated by the nanoencapsulan product that has a high solubility in water. The results of DLS indicate that products have an average particle size is 457,5 nm for BSA-amine chalcone and 201,0 nm for BSA-dimethoxy amine chalcone. FTIR results shows that nanoencapsulation BSA-chalcone has amide groups, it showed by the absorption peak which raises at 1639,55 cm-1 for amine chalcone, and 1635,69 cm-1 for dimethoxy amine chalcone.Keywords : Nanoencapsulation, chalcone, bovine serum albumin, anti-cancer.
Co-Authors Eko Prasetyo Kuncoro Hery Suwito Shofi Yasmin Nurain Yogi Putra Hidayatullah