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All Journal Biopropal Industri Jurnal Hasil Penelitian Industri Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Sains dan Teknologi Reaksi Jurnal Vokasi Aceh International Journal of Science and Technology Heca Journal of Applied Sciences Purbawidya: Jurnal Penelitian dan Pengembangan Arkeologi PESARE: Science and Engineering Service Journal JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Mitra Pengabdian Farmasi
Hesti Meilina
Universitas Syiah Kuala
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences

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Adsorption of Lead Ion in Water Solutions using Kaolin-Surfactant Modified as Adsorben Putra, Alfian; Lestari, Novia; Meilina, Hesti
Biopropal Industri Vol 6, No 2 (2015)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1850.679 KB)

Abstract

Kaolin is one of the natural adsorbent materials. The adsorption ability of kaolin is still low and need to be modified with organic compounds such as surfactants. This research aimed to optimize the lead adsorption in a waste water using modified kaolin. This study modified kaolin adsorben with cationic surfactants which have activated on temperature 300oC during 3 hours in a furnace. The comparison of kaolin and surfactant were 1:0, 1:2, 1:3 and 2:1, respectively while adsorption time were 30, 60 and 90 minute. Lead was used as the artificial waste at a concentration of 100 ppm. The waste from municipal reservoir water storage of Lhokseumawe was used as a benchmark and application. The sample was analyzed by using AAS and characterized by FTIR. The modified adsorben kaolin-surfactan 1:2 gained the highest reduction of efficiency 78% while the lead ion of municipal waste decreased from 4.65 ppm into 2.67 ppm.
PENINGKATAN KONSENTRASI SITRAL MINYAK SEREH DAPUR (Cymbopogon citratus) MENGGUNAKAN DISTILASI VAKUM (Improvement of Citral Concentration of Lemongrass Oil (Cymbopogon Citratus) Using Vacuum Distillation) Ermaya, Dewi; Meilina, Hesti; Sulaiman, Ismail; Safriani, Novi; Supardan, M Dani
Jurnal Hasil Penelitian Industri Vol 26, No 2 (2013)
Publisher : Baristand Industri Banda Aceh

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Abstract

Lemongrass oil is the one type of essential oil that has high economic value.This research purpose to learn the process continued to increase the levels of citral inlemongrass oil using vacuum distillation method. Vacuum distillation process oflemongrass oil was carried out at operating condition: temperature of 100 to 140 oC,pressures of 50 to 90 mbar and pH of 3 to 7. Gas chromatography-mass spectroscopy(GCMS) results show that vacuum distillation process increased the concentration of citralof lemongrass oil. The experimental results show that variations of temperature, pressureand pH influence on concentration of citral. The highest citral of 84.7% obtained atexperimental condition of temperature of 140 oC, pressure of 70 mbar and pH of 5.
Karakterisasi Adsorben dari Kulit Manggis dan Kinerjanya pada Adsorpsi Logam Pb(II) dan Cr(VI) - (Adsorbent Characterization from Mangosteen Peel and Its Adsorption Performance on Pb(II) and Cr(VI)) Haura, Ulfa; Razi, Fachrul; Meilina, Hesti
Biopropal Industri Vol 8, No 1 (2017)
Publisher : Balai Riset dan Standardisasi Industri Pontianak

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Abstract

The usage of biomass waste-based adsorbent for the adsorption of hazardous metal in wastewater is not only reducing waste but also lowering adsorbent price. This research aims to study the characteristics of adsorbent from mangosteen peel (Garcinia Mangostana L.) and activated charcoal from mangosteen peel, also to compare the adsorption performance on metal ion Pb(II) and Cr(VI). Synthetic wastewater used from a solution of Pb(NO3)2 and K2Cr2O7 with variations in initial concentration of 20, 40, 80, 100 and 200 mg/L. Adsorption performed at pH 5, ratio of adsorbent and waste solution 1/200 (w/v), 60 rpm, 0.5 gs nano-sized adsorbent. Characterization using SEM, FTIR and SEM-EDS showed that both adsorbents characteristics met the requirements of SNI 06-3730-1995. The highest adsorption capacity of activated carbon to adsorb Pb(II) and Cr(VI) were 38.543 mg/g and 36.838 mg/g while biosorbent adsorb Pb(II) and Cr(VI) respectively 3.98 mg/g and 36.12 mg/g.Keywords: adsorption, biosorbent, Cr(VI), mangosteen peel, Pb(II)ABSTRAKPenggunaan adsorben berbasis limbah biomassa untuk adsorpsi kandungan logam berbahaya dari limbah cair industri selain dapat mengurangi limbah juga dapat menekan harga jual adsorben. Penelitian ini bertujuan untuk mempelajari karakteristik adsorben yang terbuat dari limbah kulit manggis (Garcinia mangostana L.) dan arang aktif dari limbah kulit manggis serta membandingkan kinerja kedua jenis adsorben tersebut pada proses adsorpsi ion logam Pb(II) dan Cr(VI). Limbah sintetis yang digunakan berupa ion dari Pb(II) dan Cr(VI) dari larutan Pb(NO3)2 dan K2Cr2O7 dengan variasi konsentrasi awal 20, 40, 80, 100 dan 200 mg/L. Proses adsorpsi dilakukan pada pH 5, rasio perbandingan berat adsorben dan volume larutan limbah 1:200, kecepatan pengadukan 60 rpm, adsorben berukuran nano dengan berat adsorben 0,5 g. Masing-masing adsorben dikarakterisasi menggunakan SEM untuk mengetahui sturktur morfologi, FTIR untuk mengetahui gugus fungsi dan SEM-EDS untuk mengetahui komponen kimia yang terkandung dalam adsorben tersebut. Hasil penelitian menunjukkan bahwa karakteristik kedua jenis adsorben memenuhi syarat mutu sesuai SNI 06-3730-1995. Kapasitas adsorpsi tertinggi dari karbon aktif untuk menyerap Pb(II) dan Cr(VI) masing-masing 38,543 mg/g dan 36,838 mg/g, sedangkan kapasitas adsorpsi tertinggi biosorben untuk menyerap Pb(II) dan Cr(VI) masing-masing 36,98 mg/g dan 36,12 mg/g.Kata kunci: adsorpsi, biosorben, Cr(VI), kulit manggis, Pb(II)
Biodiesel Sumber Energi Alternatif Dari Tumbuh-Tumbuhan: Artikel Review Putra, Alfian; Meilina, Hesti
Jurnal Sains dan Teknologi Reaksi Vol 2, No 2 (2004): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v2i2.25

Abstract

Biodiesel merupakan energi terbaru penganti energi solar yang dapat diperbaharuhi dengan mengunakan proses transesterifikasi yang bersumber dari minyak tumbuh-tumbuhan yang terdapat di alam. Biodiesel yang dihasilkan dengan proses tranesterifikasi ini sangat dipengaruhi oleh temperature, katalis, rata-rata pengadukan, kontak air dengan alkohol yang digunakan, dan jumlah sisanya. Biodiesel energi alternatif ini ramah lingkungan dan mudah di peroleh dengan proses yang sangat sederhana. Biodiesel yang baik sesuai dengan standar ASTM D6751.Key word : Biodiesel, energi, solar, transsesterifikasi
PROSPEK PEKTIN (POLIMER HIDROKOLOID) DALAM INDUSTRI PANGAN DI INDONESIA Meilina, Hesti; Putra, Alfian
Jurnal Sains dan Teknologi Reaksi Vol 3, No 2 (2005): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v3i2.72

Abstract

Pektin merupakan salah satu polimer hidrokoloid yang digunakan dalam industri pangan sebagai stabilizer. Pemakaiannya semakin meluas seiring dengan semakin berkembangnya industri pangan. Proses produksi pektin melibatkan teknologi yang sederhana sehingga diharapkan dapat diterapkan menjadi salah satu industri di Indonesia. Peluang bisnis industri pektin sangat bagus jika dilihat dari ketersediaan bahan baku yang melimpah di Indonesia. Hal ini dikaitkan dengan pemakaian pektin yang cenderung meningkat dan impor pektin yang mengalami peningkatan hingga 27% setiap tahunnya. Diharapkan dengan terbukanya peluang usaha untuk memproduksi polimer hidrokoloid ini kita dapat mengurangi pemakaian pektin impor yang didatangkan dari Denmark dan Jerman.Kata kunci : pektin, hidrokoloid, kulit jeruk
KAJIAN PENAMBAHAN RAGI ROTI DAN PERBANDINGAN VOLUME STARTER DENGAN SUBSTRAT TERHADAP RENDEMEN DAN MUTU VIRGIN COCONUT OIL (VCO) Meilina, Hesti; Asmawati, Asmawati; Moulana, Ryan
Jurnal Sains dan Teknologi Reaksi Vol 8, No 1 (2010): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v8i1.127

Abstract

Penelitian untuk melihat pengaruh jumlah ragi roti dan perbandingan starter terhadap jumlah dan rendemen mutu virgin coconut oil (VCO) telah dilakukan. Pembuatan starter dilakukan dengan menambahkan ragi roti seberat 3, 5 dan 7 gram ke dalam campuran skim dan air kelapa. Starter dimasukkan ke dalam santan sebagai substrat dengan perbandingan 1:2, 1:4 dan 1:6. Hasil penelitian menunjukkan jumlah ragi roti berpengaruh terhadap bilangan peroksida, bilangan iod, bilangan asam, % free fatty acid (FFA) dan uji organoleptik aroma VCO yang dihasilkan; sedangkan perbandingan substrat tidak berpengaruh terhadap semua analisis VCO yang dilakukan. Interaksi jumlah ragi roti dan perbandingan starter dengan substrat berpengaruh terhadap bilangan asam dan % FFA namun tidak berpengaruh terhadap rendemen, kadar air, bilangan peroksida serta uji organoleptik aroma dan penampakan VCO.Kata Kunci: virgin coconut oil, ragi roti, mutu VCO
Chemometric Classification Model for Assessing Chemical Composition Alterations in Patchouli Oil Post Zeolite Adsorption Sufriadi, Elly; Meilina, Hesti; Munawar, Agus; Ezzat, Abdelrahman O.; Idroes, Rinaldi
Heca Journal of Applied Sciences Vol. 1 No. 2 (2023): October 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v1i2.86

Abstract

Various studies and applied processing by businesses have been done to improve the quality of Patchouli oil (PO), such as improving appearance, reducing heavy metal content, reducing acid numbers, and increasing the ratio of Patchouli alcohol (one of the active components of PO). However, this disregards the possibility of chemical composition change which will alter the original character of the PO. This study aims to identify the slightest shift in chemical composition from adding zeolite adsorbent into the PO. The classification model was built using Fourier transform infrared (FT-IR) spectra combined with chemometrics. The used FT-IR spectra for observation are 4000-500 cm-1 using Principal Component Analysis (PCA) and Partial Least Square-Discriminant Analysis (PLS-DA). The PO samples were from five points in Gayo Lues Regency, Province of Aceh, Indonesia, with PO added with zeolite at a ratio of 0.5%, 1.0%, 1.5%, 2.0%, and 2.5% (w/v) respectively. The classification model used in this study was able to classify between PO and PO added with zeolite at each level of the ratio. Prediction with deviation and Inlier vs. Hotelling’s T2 tests provide definitive information, with the results shown by the confusion matrix.
Rekomendasi Penataan dan Perawatan Batu Nisan Kuno Berbasis Lingkungan di Gampong Pande, Banda Aceh Butar Butar, Masnauli; Nazli; Meilina, Hesti
PURBAWIDYA Vol. 13 No. 2 (2024): Vol. 13 (2) November 2024
Publisher : Badan Riset dan Inovasi Nasional (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/purbawidya.2024.3110

Abstract

In Gampong Pande there are cultural heritage objects and mangrove forests which are the part of former ancient port city of the Aceh Darussalam Kingdom. After the earthquake and tsunami waves that hit the coast of the city of Banda Aceh in 2004, the former capital city was damaged so ecological recommendations for the arrangement and maintenance of cultural heritage objects are needed. This paper aims to provide recommendations for the arrangement and care of ancient tombstone cultural heritage objects. The methods used were literature studies, initial surveys, observations, aerial photographs, satellite images, tombstone object distribution maps, object plan recommendations, lichen sample tests in the laboratory, and field tests of citronella and coconut oil essential oil emulsions. Recommendations are planned for arranging ancient tombstones located in scattered fish ponds and mangrove forests and planning supporting facilities for their protection, development, and utilization. In maintaining ancient tombstones, environmentally friendly materials were tested, namely an emulsion of citronella essential oil, distilled water, and coconut oil. Variations in citronella essential oil emulsion with distilled water are 0%, 10%, 20%, 30%, 40%, and 100% and coconut oil concentration is 100%. Observations were made on color changes visually and with a microscope for 24 hours, 48 ​​hours, and 72 hours. Test results on six variations after the specified time both in the field and laboratory tests showed that citronella essential oil could inhibit the growth of lichens while coconut oil was not effective.  
Phosphate Removal from Aqueous Solutions using Activated Carbon Derived from Nypa fruticans Amelia, Marysha; Abdullah, Faisal; Muslim, Abrar; Meilina, Hesti; Saiful, Saiful
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.42587

Abstract

Nypa fruticans (NF) waste which includes the empty fruit bunches and shells (NFW), frond (NFF) and leaflets (NFL) composes primarily of hemicellulose, cellulose and lignin, shows great potential as a raw material for activated carbon (AC). This study investigated the removal of phosphate from aqueous solutions using activated carbon derived from Nypa fruticans. The NFW, NFF and NFL was pyrolyzed and physically activated in a tube furnace. FTIR analysis revealed that the NFW-AC, NFF-AC and NFL-AC exhibited functional groups such as chemical functional group O-H, C-O-C, C-O, C=O, C-O and C-H stretching in hemicellulose, cellulose and lignin, which were associated with phosphate (PO4) adsorption. Among these, the NFW-AC showed the lowest transmittance and higher pore density. Adsorption experiments indicated a rapid initial adsorption within the first 5 min, followed by minimal changes until equilibrium was reached at 30 min. The NFW-AC showed the best performance with the highest efficiency (40.05%) and capacity (85.85 mg/g). Adsorption kinetics for all activated carbon were better described by the pseudo-second-order model, with highest capacities of 60.606 mg/g and adsorption rates of 0.0235 g/mgmin attributed to NFW-AC. The adsorption isotherms followed the Langmuir mode, yielding capacities of 60.606 mg/g, 31.546 mg/g and 8.1967 mg/g for the NFW-AC, NFF-AC, and NFL-AC, respectively. These findings demonstrated the potential of Nypa fruticans-based activated carbon for phosphate adsorption
Adsorption of Phosphate from Aqueous Solution by Calcination of Silicified Coal: Kinetic and Isotherm Studies Fandana, Lisa; Abdullah, Faisal; Muslim*, Abrar; Suhendrayatna, Suhendrayatna; Meilina, Hesti
Aceh International Journal of Science and Technology Vol 12, No 2 (2023): August 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.2.31967

Abstract

Silicified coal (SC) consisting of SiO2 is a promising raw material for adsorbent. The present study aimed to utilize silicified coal bottom ash (SCBA) adsorbent by calcination of the SC at temperatures of 600, 800, and 1000 oC for 1 hour. The FTIR result showed that the SCBA_600, SCBA_800, and SCBA_1000 had chemical functional groups such as the asymmetric Si-O-Si, the symmetric Si-O-Si and Si-O-Si bond rocking for adsorption of phosphate (PO4 3) with the lowest percentage of transmittance of SCBA-1000. The adsorption test showed that rapid adsorption occurred in the first 10 minutes of contact time, and it did not change significantly for the rest of contact time until reaching an equilibrium time of 30 min. The PO4 3 adsorption efficiency and capacity fluctuated over the initial PO4 3 in solution in the 60.02480.29 mg/L range. The highest PO4 3 adsorption efficiency and capacity were at 480.29 mg/L, 95.49 %, and 45.86 mg/g, respectively, using the SCBA-1000. The adsorption kinetic fitted better to the pseudo-second-order kinetics model (average R2 = 0.999) with the adsorption capacity of 45.454, 45.662, and 45.872 for the SCBA_600, SCBA_800, and SCBA_1000, respectively, and the PO4 3 adsorption rate was 0.0007, 0.0008 and 0.001 g/mg.min, respectively. The adsorption isotherm followed Langmuir model (average R2 = 0.873), with the adsorption capacity being 2.357, 1.198, and 8.196 mg/g, respectively, and the pore volume being 0.0316, 0.0364 and 0.2103 L/mg, respectively.
Co-Authors Abrar Muslim Adisalamun Adisalamun Agus Nugroho, Agus Agussabti Agussabti Akhmad Baihaqi Alfian Putra Amelia, Marysha Asmaul Husna Asmawati Asmawati Aula Chairunnisak Butar Butar, Masnauli Darmadi Darmadi Dewi Ermaya Ezzat, Abdelrahman O. Fachrul Razi Faisal Abdullah Fajri Fajri Fandana, Lisa Humam Hamid, Ahmad Ismail Sulaiman Khansa Syarahil Putri M Dani Supardan, M Dani Mirna Rahmah Lubis Muhammad Rusdi Mukramah Munawar, Agus Muslim*, Abrar Muyyasir, Muyyasir Nazli Novi Safriani Novia Lestari Nurjannah Ginting, Litna Nurul Aflah Rinaldi Idroes Rosnelyi, Cut Meurah Ryan Moulana Saiful Saiful Sari, Putri Meutia Sri Mulyati Sufriadi, Elly Suhendrayatna Suhendrayatna Suparno Teuku Maimun Ulfa Haura Umi Fathanah Wahyu Rinaldi Yulia, Ruka Yunardi