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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 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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HYDROLYSIS OF CLAY FROM CAPKALA WITH VARIATION OF CHLORIDE ACID CONCENTRATIONS Wahyuni, Nelly; S., Imelda H.; Arryanto, Yateman; Sutarno, Sutarno
Jurnal Zeolit Indonesia Vol 7, No 1 (2008)
Publisher : Jurnal Zeolit Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (854.027 KB)

Hydrolysis of clay from Capkala with variation of chloride acid concentratios has been done. Hydrolysis of clay has been conducted by reacting clay in HCl with stirring during 24 hours. Hydrolysis was conducted in several variations of HCl concentration at room temperature. Hydrolyzed clay was characterized by the Atomic Absorption Spectophotometer, Infrared Spectophotometer, and X-ray Diffractometer. The analysis of Spectophotometer of Atomic Absorption was not showed the decreasing of aluminum content of hydrolized clay which is not the extrication of aluminum metal from clay structure. Infrared spectra from hydrolized clay was not showed the eliminated of absorption peak for Al-OH bonds in octahedral layer. Diffractograms of hydrolized clay was not showed the changing angle of 2Î¸ but figuring the increase of intensity of diffraction peak which indicates discharge of pollutant metals from clay structure.

Adsorpsi Senyawa Organik pada Lindi Menggunakan Cangkang Kerang Ale-Ale (Meretrix meretrix) Secara Batch Yulistya Vidyaning Maulidya; Rudiyansyah Rudiyansyah; Nelly Wahyuni
Chimica et Natura Acta Vol 9, No 3 (2021)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/cna.v9.n3.35607

Penimbunan sampah di TPA Batu Layang, Pontianak, Kalimantan Barat menyebabkan terbentuknya air lindi yang memiliki konsentrasi COD sangat tinggi. Hal tersebut menyebabkan dampak buruk terhadap lingkungan dan kesehatan. Pengolahan air lindi secara sederhana dapat dilakukan menggunakan metode adsorpsi. Penelitian ini bertujuan untuk mengetahui variasi waktu kontak, massa adsorben, dan kecepatan pengadukan optimum terhadap efisiensi adsorpsi. Karakterisasi menggunakan FTIR terhadap adsorben cangkang kerang ale-ale menunjukan adanya puncak pada bilangan gelombang 1452 cm-1, 852 cm-1, dan 716 cm-1 yang menandakan keberadaan gugus C-O. Pengukuran konsentrasi COD pada penelitian ini dilakukan secara titrasi permanganometri. Adsorpsi keadaan optimum diperoleh pada massa 4,5 g dengan kecepatan pengadukan 200 rpm selama 240 menit yang dapat menurunkan konsentrasi COD pada air lindi dari 1131,28 mg/L menjadi 456,94 mg/L dengan efisiensi adsorpsi sebesar 59,61%. Adsorpsi dilakukan kembali pada keadaan optimum mampu menurunkan konsentrasi COD pada air lindi dibawah baku mutu menjadi 288,35 mg/L dengan efisiensi adsorpsi sebesar 36,89%.

ISOTERM ADSORPSI KROMIUM(III) OLEH BIOMASSA Sargassum sp. (Isoterm Adsorption of Cromium(III) by Non-Living Sargassum sp.) Nelly Wahyuni; Imelda Hotmarisi Silalahi; Nurlina Nurlina; Yossy Yossy
Biopropal Industri Vol 11, No 2 (2020)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36974/jbi.v11i2.6030

Chromium (Cr) is one of the heavy metals with high toxicities and can be dangerous if it is thrown up directly into waters. One of the techniques to reduce heavy metal content with inexpensive, simple, effective and efficient is through adsorption process utilizing brown seaweed (algae) Sargassum sp. as adsorbent. The purpose of this study is to describe the isotherm adsorption and adsorption kinetics model of Sargassum sp. to Cr(III) by Sargassum sp. with various treatments. Adsorption treatments carried out in this research include treatment variations of the adsorbent Sargassum sp. without protonation, Sargassum sp. protonated with H2SO4 0.1 M and Sargassum sp. protonated with H2SO40.2 M; variations of contact time are 0.5, 1, 3, 6 and 12 hours; and variations of initial concentration of ion Cr(III) 50 mg/L, 100 mg/L, 300 mg/L, and 700 mg/L. The result showed that the adsorption model fitted with the Freundlich isotherm equation with coefficient correlation (R2) > 0.9. The adsorption capacity of protonated Sargassum sp. with sulfuric acid 0.1 M was 3.464 x 10-3 mol/g. It is higher than Sargassum sp. without protonation and Sargassum sp. protonated with sulfuric acid 0.2 M. The application of the Langmuir-Hinshelwood kinetics model yielded the constant of adsorption rate for each adsorbent were 1.1 x 10-3 min-1, 2.0 x 10-4 min-1 and 7.0 x 10-4 min-1, respectively.Keywords: adsorption, chromium, isoterm, kinetics, Sargassum sp.ABSTRAKKromium (Cr) merupakan salah satu jenis logam berat yang memiliki tingkat toksisitas yang sangat tinggi dan dapat menimbulkan bahaya apabila dibuang secara langsung ke perairan. Salah satu teknik untuk mengurangi kadar logam berat dengan proses yang relatif lebih murah, sederhana dan memberikan efektifitas serta efisiensi yang relatif tinggi adalah melalui proses adsorpsi dengan memanfaatkan rumput laut (alga cokelat Sargassum sp.) sebagai adsorben. Tujuan penelitian ini adalah untuk menjelaskan model isotherm adsorpsi dan kinetika adsorpsi ion Cr(III) oleh Sargassum sp. dengan berbagai variasi perlakuan. Perlakuan adsorpsi yang dilakukan pada penelitian ini antara lain variasi perlakuan terhadap adsorben yang digunakan yaitu Sargassum sp. tanpa protonasi ,Sargassum sp. terprotonasi H2SO4 0,1 M dan Sargassum sp. terprotonasi H2SO4 0,2 M; variasi waktu kontak adsorpsi yaitu 0,5; 1, 3, 6 dan 12 jam, dan variasi konsentrasi awal ion Cr(III) yaitu 50 mg/L, 100mg/L, 300 mg/L, 500 mg/L dan 700 mg/L. Hasil penelitian menunjukan bahwa adsorpsi mengikuti persamaan isoterm Freundlich dengan nilai koefisien korelasi (R2)> 0,9. Kapasitas adsorpsi ion Cr(III) oleh Sargassum sp. terprotonasi asam sulfat 0,1 M sebesar 3,464 x 10-3 mol/g. Nilai tersebut lebih tinggi dibandingkan kapasitas adsorpsi ion Cr(III) oleh adsorben Sargassum sp. tanpa protonasi dan Sargassum sp. terprotonasi asam sulfat 0,2 M. Penerapan model kinetika Langmuir-Hinshelwood menghasilkan harga konstanta kinetika adsorpsi Cr(III) dari ketiga jenis adsorben berturut-turut sebesar 1,1 x 10-3 menit -1, 2,0 x 10-4 menit -1 dan 7,0 x 10-4 menit -1.Kata kunci: adsorpsi, kinetika, kromium, isoterm, Sargassum sp.

Pelatihan Pengolahan Hasil Laut Menjadi Produk Kaya Gizi dan Kekinian di Kub Mina Sejahtera Desa Penjajap Kecamatan Pemangkat Kabupaten Sambas Nelly Wahyuni; Endah Sayekti; Gusrizal Gusrizal; Titin Anita Zaharah; Risa Nofiani
Jurnal Abdimas ADPI Sains dan Teknologi Vol. 3 No. 1 (2022): Jurnal Abdimas ADPI Sains dan Teknologi
Publisher : Asosiasi Dosen Pengabdian kepada Masyarakat Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47841/saintek.v3i1.91

Penjajap Village, Pemangkat District, Sambas Regency, West Kalimantan is located near the sea. Most of the population are fishermen, either small or medium fishermen. Currently, the village has a joint cooperative, namely KUB Mina Sejahtera Penjajap Village. This cooperative fosters fisherwomen who process processed seafood such as meatballs, frozen meatballs, and nuggets. In order to fulfil nutrition and increase the selling value of marine products, it is necessary to diversify into processed products with complete and contemporary nutritional value. This activity aims to provide training on making dim sum that has complete nutritional content, namely protein, fibre, vitamins, and carbohydrates, and is a contemporary food with a high selling value. The implementation of community service is carried out using the community development method, namely community involvement starting from problem identification and program implementation. In addition, educational methods are used, namely socialization, training and mentoring approaches, as a means of knowledge transfer and education for community empowerment. The evaluation of the activities was carried out using a questionnaire which showed that the participants very much awaited the dim sum-making training because this processed food is very popular, easy to work with, can be applied directly both for daily menus that have complete nutritional content, and has the potential to be sold.

PENGOLAHAN AIR BERSIH MENGGUNAKAN BAHAN BAKU LOKAL UNTUK DAERAH PESISIR TERPENCIL DI KABUPATEN KUBU RAYA Nelly Wahyuni; Risya Sasri; Rudiyansyah Rudiyansyah; Thamrin Usman; Kiki Prio Utomo
GERVASI: Jurnal Pengabdian kepada Masyarakat Vol 4, No 2 (2020): GERVASI: Jurnal Pengabdian Kepada Masyarakat
Publisher : LPPM IKIP PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/gervasi.v4i2.1836

Air bersih merupakan kebutuhan utama bagi manusia. Masyarakat yang mengalami kesulitan mendapatkan air bersih umunnya adalah masyarakat miskin yang berada di wilayah pedesaan. Sumber air utama bagi masyarakat terpencil di pesisir Kabupaten Kubu Raya, Kalimantan Barat berasal dari muara Sungai Kapuas. Air tersebut merupakan air gambut dan payau. Penerapan teknologi dalam pembangunan sarana air bersih harus disesuaikan dengan tingkat kondisi sosial, budaya, dan ekonomi masyarakat. Tujuan kegiatan pengabdian kepada masyarakat ini pembuatan sarana pengolahan air bersih dengan metoda filtrasi menggunakan media filter dari bahan baku lokal. Metoda pelaksanaan berupa pelatihan penggunaan media filtrasi berupa pasir koral, kaolin, dan karbon aktif dalam pengolahan air. Berdasarkan evaluasi kegiatan, penggunaan bahan lokal yang murah, mudah didapat dan diolah pada pengolahan air akan sangat bermanfaat bagi masyarakat di daerah pesisir. Hal ini juga sangat mendukung proses keberlangsungan dan keberlanjutan penggunaan instalasi pengolahan air oleh masyarakat secara mandiri.

Adsorpsi Senyawa Organik pada Lindi TPA Batu Layang menggunakan Zeolit Alam Teraktivasi Sasa Widianti; Lia Destiarti; Nelly Wahyuni
Jurnal Ilmiah Ar-Razi Vol 10, No 1 (2022): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v10i1.3116

Tingginya senyawa organik yang terkandung di dalam lindi memberikan dampak buruk pada lingkungan. Zeolit alam merupakan salah satu material yang sering digunakan dalam pengolahan limbah cair karena memiliki kemampuan dalam mengadsorpsi, untuk meningkatkan kualitas zeolit alam perlu dilakukan proses aktivasi yang bertujuan memperbesar volume pori-pori dari zeolit alam. Penelitian ini bertujuan untuk mengetahui kapasitas zeolit alam teraktivasi asam klorida (HCl) dan natrium bikarbonat (NaHCO3) sebagai adsorben senyawa organik yang dianalisis sebagai nilai Chemical Organic Demand (COD) pada lindi dengan metode kolom batch menggunakan aliran down flow. Aktivasi zeolit menggunakan aktivator asam dan basa dikarakterisasi fisika-kimia, luas permukaan dengan uji daya serap iod dan metilen biru, serta gugus fungsi dengan Fourier Transform Infra Red (FTIR). Nilai COD diukur dan dihitung dengan metode titrasi permanganometri. Hasil karakterisasi uji iod pada zeolit alam, zeolit aktivasi asam dan zeolit aktivasi basa berturut-turut sebesar 232,57 mg/g, 257,32 mg/g, dan 240,79 mg/g. Hasil karakterisasi luas permukaan dengan metilen biru pada zeolit alam, zeolit aktivasi asam dan zeolit aktivasi basa berturut-turut sebesar 2,02 m2/g, 2,45 m2/g dan 2,48 m2/g. Zeolit alam teraktivasi HCl dan NaHCO3 mampu menyerap senyawa organik pada lindi berturut-turut sebesar 69,32% dan 89,39%. Nilai COD pada lindi setelah pengolahan dengan zeolit teraktivasi telah memenuhi baku mutu yang telah ditentukan olehn Peraturan Menteri Lingkungan Hidup sebesar 300 mg/L dengan konsentrasi awal lindi 840 mg/L menjadi 257 mg/L teraktivasi asam dan 89 mg/L teraktivasi basa.

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 FENOL OLEH LEMPUNG ALAM Nelly Wahyuni; Imelda H. Silalahi; Dina Angelina
Jurnal Teknologi Lingkungan Lahan Basah Vol 7, No 1 (2019): Januari 2019
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jtllb.v7i1.34363

Abstrak Fenol merupakan polutan yang sangat berbahaya di lingkungan karena bersifat racun dan sulit terdegradasi oleh organisme pengurai. Lempung alam yang berasal dari Kecamatan Capkala, Kabupaten Bengkayang akan dikaji penggunaannya sebagai adsorben fenol. Adsorpsi dilakukan dengan metoda batch pada variasi waktu kontal dan konsentrasi awal fenol. Data kesetimbangan adsorpsi diuji dengan isoterm Langmuir dan Freundlich. Hasil penelitian menunjukkan waktu kontak optimum adsorpsi adalah 4 jam. Proses adsorpsi fenol oleh lempung alam mengikuti model isoterm adsorpsi Langmuir dengan kapasitas adsorpsi sebesar 0,65mg/g. Kata Kunci: fenol, Freundlich, isoterm adsorpsi, Langmuir, lempung alamAbstract Phenol is a pollutant that is very dangerous in the environment because it is toxic and difficult to degrade by decomposing organisms. Natural clay from Capkala District, Bengkayang Regency will be studied as phenol adsorbent. Batch experiments were carried out by varying the parameters like contact time of adsorption and initial phenol concentration. The equilibrium data were tested with Langmuir and Freundlich isotherm. The results showed that the optimum contact time for adsorption was 4 hours. The process of adsorption of phenol by natural clay follows the Langmuir adsorption isotherm model with an adsorption capacity of 0.65mg/g. Keywords: adsorption isotherm, Freundlich, natural clay, phenol, Langmuir.

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

Co-Authors Agustiawan, Deri Ajuk Sapar Andi Hairil Alimuddin Angelina, Dina berta juniarty antomy 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 Wirna Aprilianti Yateman Arryanto Yossy Yossy Yudi, Yulius Yulistya Vidyaning Maulidya

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