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All Journal POSITRON Jurnal Zeolit Indonesia Biopropal Industri Chimica et Natura Acta Indonesian Journal of Pure and Applied Chemistry AR-RAZI Jurnal Ilmiah GERVASI: Jurnal Pengabdian kepada Masyarakat Acta Chimica Asiana Abdimas Galuh : Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas ADPI Sains dan Teknologi Jurnal Teknologi Lingkungan Lahan Basah J-ABDIPAMAS (Jurnal Pengabdian Kepada Masyarakat)

Nelly Wahyuni

Universitas Tanjungpura

Author-ID : 411309

Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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SINTESIS DAN KARAKTERISASI SILIKA GEL DARI LIMBAH KACA SERTA APLIKASINYA PADA KROMATOGRAFI KOLOM Verry Andre Fabiani; Nelly Wahyuni; Ridho Brilliantoro; Mellisa Nurul Safitri
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Silica gel synthesis from glass waste have been carried out with activation and purification method by using hydrochloride acid. Hydrochloride acid were varied 8 N, 10 N, and 12 N to observe optimum concentration in purification of silica gel and component separation in chromatography column. Gravimetric analysis result showed 12 N hydrochloride acid produce ~100 % silica. XRD and FTIR analysis revealed that synthetic gel silica was amorphous where its IR absorption bands were at 3426 cm-1, 1620 cm-1, 1080 cm-1, 772 cm-1 and 478 cm-1. The absorption bands agreed to standard gel silica and spectrum. The most effective HCl in gel silica synthesis was 12 N, caused by its ability to separate color component in a column. The synthetic silica that can be applied as stationary phase in column chromatography.

FOTODEGRADASI FENOL DALAM LEMPUNG TERPILAR TIO2 (PHOTODEGRADATION OF PHENOL ON TIO2-PILLARED-KAOLINITE Imelda H Silalahi; Nelly Wahyuni; Irwan Irwan
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 2 (2020)
Publisher : Tanjungpura University

Photodegradation of phenol on TiO2-pillared-kaolinite was observed. Pillarization of kaolinite was conducted through intercalation of polyoxotitanium sol into clay suspension followed by calcination giving TiO2-kaolinite which showed an increase in specific surface area and total pore volume compared with the kaolinite. The analysis of XRD demonstrated no significant change on d-space of second order of kaolinite structure associated with 2q 26.61°, but diffractions with regard to 2q 25.3° and 48.0° interpreted for TiO2 anatase were seen on the diffractogram of TiO2-kaolinite. The significant decrease of phenol concentration was observed in the presence of both kaolinite and TiO2-kaolinite under UV illumination (hn ³ 365 nm) compare with the photoreaction without the kaolinite materials however the degradation rate of phenol on TiO2-kaolinite was faster than that on the kaolinite-only where 50% of phenol was consumed after 45 minutes of reaction. Kinetic study showed the photoreaction of phenol on TiO2-kaolinite follows the first order reaction with the reaction rate constant of 1.8 x 10-2 min-1.

ISOTERM ADSORPSI Pb(II) PADA KARBON AKTIF TEMPURUNG KELAPA DENGAN VARIASI KONSENTRASI AKTIVATOR NATRIUM BIKARBONAT (ISOTHERMAL ADSORPTION OF Pb(II) BY ACTIVATED CARBON WITH VARIATIONS IN CONCENTRATION OF SODIUM BICARBONATE) Erma Maruni; Nurlina Nurlina; Nelly Wahyuni
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 2 (2022)
Publisher : Tanjungpura University

ABSTRACT Activated carbon is a porous solid that contains 85-95% carbon. The study used coconut shells as carbon sources and sodium bicarbonate as activators. Sodium bicarbonate can release carbon dioxide (CO2), where the CO2 will be used as a carbon donor. The study aims to explain the properties of carbon, activated carbon (KA) and its performance test in the solutions of Pb(II) ions. Metallic lead is toxic, which can slow down the normal working of red blood cells so that it can cause anaemia and can also inhibit the biosynthesis of haemoglobin. The research phase starts from the pyrolysis of coconut shells (t =2 hours, T=230 oC) to carbon. Carbon is activated with the variated percentage of sodium bicarbonate from 0 % to 8% and soaked for 24 hours (KA 0%, KA 4% and KA 8%). Activated carbon is characterized by water content, ash content, uptake of iodine, and methylene blue following the SNI method. Carbon, KA 0%, KA 4% and KA 8% tested its performance as adsorbent ion Pb(II) from PbNO3 solution with concentrations of 5, 10, 15, 20 and 25 ppm. The results showed that the water content, ash levels, and uptake of blue methylene KA met SNI No. 06-3730-1995. The highest adsorption efficiency at five ppm Pb(II) of carbon = 86.87%, KA 4% = 99.01% Isotherm adsorption of Pb(II) ions fitted to Langmuir for Carbon and KA 4% with K = 1.5044 L/g, am = 0.11 mg/g and K= 4.9468 L/g, am = 1.0735 mg/g, respectively

ADSORPSI SENYAWA MONOMER PIROL OLEH KARBON AKTIF MAGNETIK (ADSORPTION OF PYROL MONOMER COMPOUNDS BY MAGNETIC ACTIVE CARBON) berta juniarty antomy; M Agus Wibowo; Nelly Wahyuni
Indonesian Journal of Pure and Applied Chemistry Vol 5, No 3 (2022)
Publisher : Tanjungpura University

Magnetic activated carbon (KAM) is used as an absorbent or adsorbent based on coconut shell which has been activated with sodium bicarbonate. The activated carbon is added to the iron composite which produces KAM. The iron composite content in the adsorbent has the ability to absorb and facilitate the separation process on the adsorbate. The purpose of this study was to determine the ability of the adsorbent to absorb the adsorbate, namely the pyrrole monomer compound. The adsorbent was characterized using the Fourier Transform Infra-Red (FTIR) instrument to determine the functional groups present. The adsorption capacity of iodine and methylene blue, adsorption isotherm, and adsorption kinetics were analysis. The adsorption isotherm was determined by varying the pyrrole concentration from the range of 30; 40; 50; 60 and 70 ppm. Determination of time variation was also carried out on adsorption kinetics with a range of 1; 1.5; 2; 2.5 and 3 hours. The FTIR spectrum produces Fe-O functional groups with an absorption peak of 556 cm-1, indicating the presence of a magnetic composite that has been attached to carbon. The adsorption capacity of iodine and methylene blue on magnetic activated carbon are 527 mg/g and 699 mg/g, respectively. The adsorption kinetics on KAM with the first-order model resulted in a value of R2=0.7736

Co-Authors Agustiawan, Deri Ajuk Sapar Andi Hairil Alimuddin Angelina, Dina berta juniarty antomy Didiek Sugandi Dina Angelina Endah Sayekti Endah Sayekti Erma Maruni Febriyanti, Shafira Viana Gusrizal Gusrizal Imelda H Silalahi Imelda H. S., Imelda H. Imelda Hotmarisi Silalahi Irwan Irwan Jamhir Islami Kiki Prio Utomo Lia Destiarti M Agus Wibowo Mellisa Nurul Safitri Miftachul Hikmah Nurlina Nurlina Nurlina, Nurlina Panaya, Gabriela Yenti Landang Ridho Brilliantoro Risa Nofiani Risya Sasri Rudiyansyah Rudiyansyah Rudiyansyah Rudiyansyah Sasa Widianti Shofiyani, Anis Sugandi, Didiek Sutarno Sutarno Syaifurrahman Syaifurrahman Thamrin Usman Titin Anita Zahara Titin Anita Zaharah Titin Anita Zaharah Vebriyanti, Lo Mei Ly Verry Andre Fabiani Wijayanto, Ericco Winda Rahmalia Wirna Aprilianti Yateman Arryanto Yossy Yossy Yudi, Yulius Yulistya Vidyaning Maulidya

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