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Optimum Temperature and Time for Acid Hydrolysis in Reducing Sugar Manufacturing from Arabica Coffee Cascara with Response Surface Methodology (RSM) Suryati, S; Meriatna, M; Masrullita, M; Safriwardy, Ferri; Ardiansyah, Ardiansyah
International Journal for Educational and Vocational Studies Vol 3, No 2 (2021)
Publisher : Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/ijevs.v3i2.4666

Abstract

This research aims to utilize the Arabica coffee cascara waste as a resource for reducing sugar production, including the investigation on the temperature and time required of the acid hydrolysis. The samples were initially pretreated (drying and milling), followed by delignification with the organosolv technique using alcohol. Then, the hydrolysis was carried out using sulfuric acid (1%) at a particular temperature (95, 100, and 105 °C) and time (2, 4, and 6 h) variations. Yield percentage, density, and reducing concentration were analyzed in each trial to generate a response surface methodology model. Based on the results, the hydrolysis can be optimized at 96.46 °C for 2.59 h, yielding 16.7696% reducing sugar.
Synthesis Carboxyl Methyl Cellulose (CMC) from Rice Straw (Oryza Sativa L.) Waste Masrullita Masrullita; Rizka Nurlaila; Zulmiardi Zulmiardi; Ferri Safriwardy; Auliani Auliani; Meriatna Meriatna
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (553.889 KB) | DOI: 10.52088/ijesty.v2i1.200

Abstract

Rice straw is one of material containing cellulose to produce Carboxymethyl Cellulose (CMC). CMC is a non toxic polysaccharide that produces from cellulose that widely used in the pharmaceutical, food, textile, detergent, and cosmetic products industries. There are two stages usually use to produce CMC which are mercerization and esterification processes. Rice straw waste is one of the materials to produce CMC, it has a cellulose content of 37.7%, hemi-cellulose 21.99%, and lignin 16.62 %.  BPS Aceh shown that the total rice harvested area was 310.01 hectares, with a total production of 1.71 million tons, and rice produced at 982.57 thousand ton. This study aims to reduce waste and environmental pollution caused by rice straw and collects information of rice straw as a basic material to produce of carboxymethyl cellulose and to increase the economic value of rice straw.  The effects of various wieght parameters sodium monochloroacetate on chemical properties of CMC that produce from rice straw were investigated in this research. Rice straw was collected from a rice field in Nisam, North Aceh. The research conducted by synthesizing 5 grams rice straw for 5.5 hours using NaOH and Sodium Monochloroacetate solutions. With variations weight of sodium monochloroacetate are 5,6,7,8 and 9 grams. The characterization of CMC was carried out by Fourier Transform Infrared (FTIR), CMC yield, DS, Viscosity, water content, pH. The result shows that addition of sodium monochloroacetate was significant factors influence the chemical properties on CMC. The CMC that produced in this study achieved to National Indonesia Standard (SNI).
Application of Pisang Awak Bunch-Derived Heterogenous Base Catalyst in Transesterification of Palm Oil into Biodiesel Meriatna Meriatna; Zulmiardi Zulmiardi; Suryati Suryati; Sulhatun Sulhatun; Zukhrufi Dina Nasution; Rahmadhani Rahmadhani
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.396 KB) | DOI: 10.52088/ijesty.v2i1.204

Abstract

Biodiesel is an alternative fuel for diesel machine comprosied of alkyl monoesters deriving from vegetable oils or animal fats. Cooking oil is an oil originated from vegetable or animal fat which has been priorly purified, where it appears in liquid form at room temperature and is usually used to fry food ingredients. Heterogenous catalyst is a catalyst present in different phase with the reagent in a reaction it catalyzes. Kalium content in banana in a banana bunch is sufficiently high reaching 94.4%. The aim of this study was to utilize banana bunch which has been priorly ashed using furnace at 700°C for 4 hours, thereafter, applied as a heterogenous catalyst in a the preparation process of biodiesel from cooking oil. Processing variables investigated in this research included the influences of the number of catalyst (3, 4, 5, 6, and 7%) and molar rasio of oil and methanol (1:5, 1:6, 1:7, 1:8, and 1:9) against the properties of produced biodiesel, namely density, viscosity, and water content which later compred with Indonesian standard (SNI). From the study, it was obtained maximum yield of 90.97% with methanol:oil rasio of 1:7 at processing temperature of 60°C with reaction time of 90 minutes and catalyst as much as 3 % w/w. The characteristics of the cooking oil-based biodiesel obtained from the a reaction with oil: methanol rasio of 1:6 and catalyst as much as 3% w/w were density 850 kg/m3 and viscosity 621 mm2/s. This research showed that the obtained biodiesel characteristics had been sufficient according to the SNI, and the use of calcinated banana bunch was very potential in the production of biodiesel acting as solid catalyst person.
Oyster Shell Waste (Crassostrea Gigas) as A Cheap Adsorbent for Adsorption Of Methylene Blue Dyes: Equilibrium and Kinetics Studies Muhammad Muhammad; Meriatna Meriatna; Nia Afriani; Rizka Mulyawan
International Journal of Engineering, Science and Information Technology Vol 1, No 4 (2021)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (762.771 KB) | DOI: 10.52088/ijesty.v1i4.178

Abstract

In this study, Oyster (Crassostrea gigas) shell powder which contains calcium carbonate (CaCO3) was converted into calcium oxide (CaO). The Oyster shell powder that had been activated was utilized for the adsorption of the methylene blue (MB) dyeing material, which is one of waste water concerns. Oyster shells were crushed and sieved into 100 mesh sized powder and then calcinated at a temperature of 600℃ and 800℃ both for 4 hours period. To determine the adsorption equilibrium, methylene blue (MB) solution was used with varying concentration from 10 to 50 mg/L in which the adsorbent weighing 3 g was put into a conical flash and shaken until the adsorption equilibrium was reached. As for the adsorption kinetics, 250 mL MB solution was used with initial concentrations of 10, 20 and 30 mg/L, with an adsorbent weight of 3 g and a solution at pH 11 for each concentration. The evaluation of the experimental data from the adsorption process is well explained by the Freundlich equation, with the correlation coefficient value (R2) found to be 0.9999, where the value of the adsorption intensity (n) is close to unity; this shows that the adsorption is multilayer or in other words the adsorption energy is heterogeneous. The kinetics study also shows that pseudo second-order model is the most applicable to the adsorption process. From the pseudo-second-order model, with the correlation coefficient between 0.9984 - 0.9999 can explain that the methylene blue (MB) adsorption process is chemically based sorption or in other words termed as chemisorption.
Preparation and Characterization of Chitosan-Gelatin-Glycerol Biocomposite for Primary Wound Dressing Suryati Suryati; Meriatna Meriatna; Sulhatun Sulhatun; Dwi Ayu Lestari
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Master Program of Information Technology, Universitas Malikussaleh, Aceh Utara, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (469.552 KB) | DOI: 10.52088/ijesty.v2i1.203

Abstract

This study aimed to examine the laboratory-based preparation of chitosan-gelatin bio-composite with the addition of glycerol as an additive to improve its quality which could be further applied for primary wound dressing. The method consisted of three stages; the first was the preparation of raw materials, the second was the preparation of the bio-composites, and the last was the characterization. In this study,chitosan 90.2% DD and gelatine (dissolved in 1% acetic acid) were blended at volume ratios v/v (30:70), and glycerol was added into blended at five different volume 20, 25, 30, 35, 40, 45 (mL) respectively. The biocomposites is then shaped in a glass mold, allowed to at room temperature for 24 hours, and dried in oven at 50oC for 48 hours. The chitosan-gelatin-glycerol bio-composites was smooth, flexible, transparent thin sheet and non-porous. The optimum thickness (4.01 mm) was obtained from a bio-composite with chitosan-gelatin-glycerol ratio of 30:70:45. The same composition rasio was found to have the liquid absorbance reaching 140.34%. The bio-composite with a chitosan-gelatin-glycerol ratio of 30:70:45 also had the highest swelling ability in saline (168.06%). The functional group analysis using Fourier Transform Infrared (FT-IR) spectroscopy revealed the possession of hydroxyl (O-H) and carbonyl (C-O) functional groups suggesting its good biodegradability and environmentally friendly properties. Taken altogether, the results imply the wound dressing bio-composite is hydrophilic. Based on the results of characteristic testing, it is shown that the chitosan-gelatin-glycerol biocomposite has the potential to be applied as a primary wound dressing, which is ideal for wound healing and protection.
Pemanfaatan Jerami Padi (Oryza Sativa L.) Sebagai Bahan Baku Dalam Pembuatan CMC (Carboximetil Cellulose) Masrullita Masrullita; Meriatna Meriatna; Zulmiardi Zulmiardi; Ferri Safriwardy; Auliani Auliani; RIZKA NURLAILA
Jurnal Rekayasa Proses Vol 15, No 2 (2021)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.69569

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Rice straw is a waste from rice plants that contains 37.71% cellulose, 21.99% hemicellulose, and 16.62% lignin. High cellulose content in rice straw can be used as raw material for the manufacture of Carboxymethyl Cellulose (CMC). CMC is a cellulose derivative widely used in food, pharmaceutical, detergent, textile and cosmetic products industries as a thickener, stabilizer of emulsions, or suspensions and bonding. This study aims to process rice straw waste into CMC with variations in sodium monochloroacetate of 5,6,7,8 and 9 grams. The method used in this research is by synthesis using 15% NaOH solvent, with a reaction time of 3.5 hours and 5 grams of rice straw. The results showed that the best CMC was obtained at a concentration of 9 grams of sodium monochloroacete with a yield characterization of 94%, pH 6, water content of 13.39%, degree of substitution (Ds) of 0.80, and viscosity of 1.265 cP.
Optimasi Adsorpsi Ion Mg2+ pada Fixed Bed Column dengan Menggunakan Response Surface Methodology Novi Sylvia; Meriatna Meriatna; Fikri Hasfita; Lukman Hakim
Reaktor Volume 17 No. 3 September 2017
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.961 KB) | DOI: 10.14710/reaktor.17.3.126-131

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Abstract OPTIMIZATION ADSORPTION OF Mg2+ ION ON FIXED BED COLUMN USING RESPONSE SURFACE METHODOLOGY. Modeling of the adsorption process is used to establish the mathematical relationship between the interacting process variables and process optimization. This is important to determine the factor values that produce a maximum response. Adsorption of Mg from groundwater was optimized using response surface methodology based on Box-Behnken design was used to analyze adsorption data. The process was investigated by continuous experiments. Variables included in the process were: bed depths (7.5, 10, and 12.5 cm), time (20, 40, and 60 min), and flow rate (6, 10, and 14 L/min). Regression analysis was used to analyze the developed models. The outcome of this research showed that 72.784% of the variability in removal efficiency is attributed to the three process variables considered, that is, bed depths, time, and flow rate. Optimization tests showed that the optimum operating conditions for the adsorption process occurred at a bed depth of 11.37 cm, time of 55.53 min and flow rate of 6 L/min. Keywords: adsorption; Box-Behnken design; magnesium (Mg2+); optimization  AbstrakPemodelan dari proses adsorpsi digunakan untuk menentukan hubungan matematis antara variabel proses interaksi dan proses optimasi. Hal ini penting untuk menentukan nilai faktor yang menghasilkan respon maksimum. Adsorpsi magnesium (Mg2+) dari air tanah dioptimalkan menggunakan metodologi respon permukaan model Desain Box-Behnken yang digunakan untuk menganalisis data adsorpsi. Percobaan dilakukan secara kontinyu. Variabel yang termasuk dalam proses tersebut adalah: tinggi unggun (7,5, 10 dan 12,5 cm), waktu kontak (20, 40, dan 60 menit), dan laju alir (6, 10, dan 14 L/menit). Analisis regresi digunakan untuk menganalisis model yang dikembangkan. Hasil penelitian menunjukkan bahwa 72,784% efisiensi penyisihan Mg2+ ditentukan oleh tiga variabel proses, yaitu tinggi unggun, waktu kontak, dan laju alir. Hasil optimasi menunjukkan bahwa kondisi operasi optimum untuk proses adsorpsi terjadi pada tinggi unggun 11,37 cm, waktu kontak 55,53 menit dan laju alir 6 L/menit. Kata kunci: adsorpsi; Box-Behnken desain; magnesium (Mg2+); optimasi
KINERJA KOLOM ADSORPSI PADA PENJERAPAN TIMBAL (Pb2+) DALAM LIMBAH ARTIFISIAL MENGGUNAKAN CANGKANG KERNEL SAWIT Novi Sylvia; Meriatna Meriatna; Lukman Hakim; Fitriani Fitriani; Anisma Fahmi
JURNAL INTEGRASI PROSES VOLUME 6 NOMOR 4 DESEMBER 2017
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1307.434 KB) | DOI: 10.36055/jip.v6i4.2549

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Cangkang kernel sawit merupakan limbah hasil pengolahan minyak sawit yang sebagian kecil dimanfaatkan sebagai bahan bakar, sisanya dibuang ke lingkungan sebagai pupuk. Salah satu upaya peningkatan nilai ekonomis limbah cangkang kernel sawit dapat dilakukan dengan mengolahnya menjadi karbon aktif yang dapat mengadsorpsi logam berat, salah satunya timbal. Penelitian ini bertujuan untuk menentukan kapasitas adsorpsi ion Pb2+ dengan menggunakan model Thomas. Pada penelitian ini kemampuan karbon aktif sebagai adsorben dapat ditingkatkan melalui aktivasi kimia dan fisika. Adsorben tersebut dimasukkan ke dalam kolom dengan tinggi unggun yang divariasikan 3, 6, dan 9 cm. Kolom tersebut dialirkan limbah artifisial Pb2+ secara kontinyu dengan variasi laju alir influen 6, 10 dan 14 L/menit. Konsentrasi efluent Pb2+ dianalisa dengan Atomic Absorb Spectrophotometer (AAS). Hasil yang diperoleh menunjukkan bahwa semakin tinggi unggun dan laju alir maka kapasitas adsorpsi (q0) dan konstanta Thomas (kTh)  ion Pb2+ semakin meningkat. Nilai q0 dan kTh  tertinggi diperoleh pada tinggi unggun 9 cm dan laju alir 14 L/menit sebesar 80,133 mg/g, 0,0028 L/mg.menit.
PEMANFAATAN TEPUNG GLUKOMANAN DARI PATI UMBI PORANG (AMORPHOPHALLUS MUELLERI BLUME) SEBAGAI BAHAN DASAR PEMBUATAN EDIBLE FILM Zakenia Khairunnisa Falah; Suryati Suryati; Novi Sylvia; Meriatna Meriatna; Syamsul Bahri
Chemical Engineering Journal Storage (CEJS) Vol 1, No 3 (2021): Chemical Engineering Journal Storage (CEJS) - Desember 2021
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v1i3.5064

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Bahan makanan pada umumnya sangat sensitif dan mudah mengalami penurunan kualitas. Bahan pengemas dari plastic banyak digunakan dengan pertimbangan ekonomis dan memberikan perlindungan yang baik dalam pengawetan. Penggunaan material sintetis tersebut berdampak pada pencemaran lingkungan, sehingga dibutuhkan penelitian mengenai bahan pengemas yang dapat diuraikan. Alternative penggunaan kemasan yang dapat diuraikan adalah menggunakan edible film. Edible film didefinisikan sebagai lapisan yang dapat dimakan yang ditempatkan di atas atau di antara komponen makanan, dapat memberikan alternative bahan pengemas yang tidak berdampak pada pencemaran lingkungan karena menggunakan bahan yang dapat diperbaharui dan harganya murah. Kandungan glukomanan pada umbi porang memiliki kemampuan   membentuk lapisan film yang baik, biocompatibility yang baik, biodegradable  serta memiliki kemampuan membentuk gel. Oleh karena itu umbi porang dapat dijadikan sebagai bahan dasar pembuatan biopolimer atau biodegradable polimer.    Edible film Glukomanan dan plasticizer gliserol dengan penambahan kitosan dibuat dengan proses pemanasan pada suhu 50oC dan pengeringan pada suhu 60oC. hasil terbaik edible film biodegradable diperoleh pada konsentrasi gliserol 3 ml dan glukomanan 3 gram dan memiliki nilai ketebalan 0,59 mm, nilai ketahanan air 25,229% dan nilai kemampuan terdegradasi 100%. Hasil spektrum FTIR terhadap edible film menunjukkan tidak adanya perubahan bilangan gelombang dari spektrum glukomanan, kitosan dan gliserol dengan gugus fungsi O–H, N–H dan C=O. Hal ini menunjukkan bahwa edible film yang dihasilkan hanya berinteraksi secara fisik.
PENGARUH SUHU DAN WAKTU REAKSI TRANSESTERIFIKASI MINYAK JARAK KEPYAR (Castor Oil) TERHADAP METIL ESTER DENGAN MENGGUNAKAN KATALIS ABU TANDAN KOSONG KELAPA SAWIT Lidya Permata Lestari; Meriatna Meriatna; Suryati Suryati; Jalaluddin Jalaluddin
Chemical Engineering Journal Storage Vol 1, No 2 (2021): Chemical Engineering Journal Storage Oktober 2021
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v1i2.5478

Abstract

Biodiesel merupakan bahan bakar alternatif untuk mesin diesel yang terdiri dari alkil monoester dari minyak tumbuhan atau lemak hewan. Minyak jarak kepyar (Castor Oil) adalah minyak  nabati yang diperoleh dari ekstrak biji tanaman jarak kepyar. Tujuan dari penelitian ini adalah untuk memanfaatkan minyak jarak kepyar dalam pembuatan biodiesel dengan menggunakan  katalis  heterogen  yang  berasal  dari  tandan kosong kelapa sawit  yang dikalsinasi pada suhu 600 °C selama 6 jam. Proses transesterifiksi mereaksikan minyak dan metanol untuk menghasilkan metil ester dan gliserol. Metil ester yang dihasilkan pada lapisan atas dipisahkan dari gliserol dan kemudian dimurnikan. Pengaruh dari berbagai variabel proses seperti pengaruh suhu dan waktu reaksi diamati dalam percobaan ini. Sifat-sifat biodiesel seperti Yield paling tinggi diperoleh pada suhu 65 °C selama 100 menit dengan katalis 3 (m/m)%.. yaitu sebesar 76,62%, kemudian untuk densitas diperoleh hasil terbaik 0,863 mg/l pada suhu 55°C selama 80 menit dengan katalis 3 (m/m)%, selanjutnya untuk viskositas diperoleh 5,25 mm2/s pada suhu 65°C selama 100 menit dengan katalis 3 (m/m)%, kemudian kadar air diperoleh 0,038%vol pada suhu 60°C dan selama 80 menit dengan katalis 3 (m/m)%. dan bilangan asam  diperoleh 0,48 Mg-KOH/g pada suhu 50°C selama 100 menit dengan katalis 3 (m/m)%. Hasil yang diperoleh pada penelitian ini menunjukkan bahwa katalis yang berbasis tandan kosong kelapa sawit dapat digunakan untuk memproduksi biodiesel.
Co-Authors Abubakar Abubakar Adriyan Jondra Afifa Luthfia Agam Muarif Agam Muarif Alifnur Alifnur Amri Aji Amri Amri Andrie Kurniawan Indra Anisma Fahmi Anisyah Padang Anita Sari Ferani Annisa Aulia Ardiansyah Ardiansyah ARDIANSYAH ARDIANSYAH Asnadia Asnadia Aulia Fahri Auliani Auliani Ayu Sutia Amanda Azhari Azhari Azhari Azhari Cut Mauliza Utary Dion Aidil Putra Dr. Masrulita S.Si MT Dwi Ayu Lestari Eddy Kurniawan Efri Marnelisa Eka Intan Kumala Putri Eka Sri Astuti Eva Diana Evana Evana Faisal Faisal Fajar Sidiq Seregar Ferri Safriwardy Fikri Hasfita Fitriani Fitriani Frandika Darma Hanif, Hanif Haslina Haslina Iqbal Kamar Iqbal Kamar Iqbal Kamar Ishak Ibrahim Ishak Ibrahim Ishak Ishak Ishak Ishak Ishak Ishak Ishak Ishak Ishak Ishak Jalaluddin Jalaluddin Khairunnisa Laksita Ika Paksi Leni, Maulinda Lidya Permata Lestari Lidya Permata Lestari Lisa Andriani Lisa Fitria Lukman Hakim Lukman Hakim Lukman Hakim Luthfi Mughni Anisa Haryono Mahyuni Marito Harahap Marlina Marlina Maryanti Maryanti Masrullita Masruillita Masrullita Masrullita Masrullita, M Muarif, Agam Muazzinah Muazzinah Muhammad Fazlunnazar Muhammad Muhammad Muhammad Muhammad Muhammad Rifki Aulia Muhammad Sayuthi Munawar Khalil Mutia Sukma Nadia Prisca Putri Narul ZA Nasrul ZA Nia Afriani Nia Sagita Lestari Novi Sylvia Novi Sylvia Nur Asiah Indah Rahayu Nurlian Nurlian Nurlian Octaviani Pasaribu Putri Sara Fhariza R.A Nita Rosalinda Muttaqin Rahmadhani Rahmadhani Reza Abdillah Harahap Reza Dwi Fani Rina Afriani Rina Lestari Rizka Mulyawan Rizka Mulyawan Rizka Mulyawan Rizka Nurlaila Rizka Nurlaila Rizka Nurlaila Rozanna Dewi Rozanna Dewi Safriwardy, Ferri Safwan Azlani Samsul Bahri Samsul Bahri Sanda Mulia Utari Selvi Sundari Sinaga Sulhatun Sulahatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Sulhatun Suri Atika Suryani Suryani Suryati Suryati Suryati Suryati Suryati Suryati Suryati Suryati Suryati Suryati Suryati Suryati, S Syafira Dara Syamsul Bahri Syamsul Bahri Syamsul Bahri Syarifah Yulisa Tasya Maidayanti Tata Tirani Wiza Ulfa Fibarzi Yudistira Yudistira Zainuddin Ginting Zukhrufi Dina Nasution Zulmiardi Zulmiardi Zulmiardi Zulmiardi Zulmiardi, Zulmiardi Zulnazri Zulnazri