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Penentuan Daya Jerap Karbon Aktif Dari Meranti Merah Terhadap Ion Fe(III) Yusra, Arif; Yusnimar, Yusnimar; Drastinawati, Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Waste pollution of heavy metals in the waters continue to rise each year. this may endanger the survival of living creatures that are in the vicinity. One of contributor of the heavy metalwaste in the waters is the result of discharges of industrial waste. Activated carbon which has a high adsorption capacity for the adsorbate. Activated carbon can be produced from materials containing carbon or charcoal was treated in a certain way to gain more surface area. The purpose of this research was to determine the ability of activated carbon adsorption of the ion Fe (III) which in the synthesis of red meranti. This research used two methods of activation that chemical activation with activator concentration variation Na2CO3 4%, 5% and 6% w/v, and physical activation with temperature variation of 300 0C, 500 0C and 700 0C. The characterization of activated carbon which include: moisture content, ash content and adsorption capacity for iodine based Standard SNI 06-3730-95, and determining the ability of activated carbon jerap against ion Fe (III) at concentrations of 20 ppm. Theresults obtained by the characteristics of the activated carbon 06-3730-95 meet SNI standards. Adsorption capacity of active carbon on ion Fe(III) has maximal value at 99.745% physic way with temperature at 300 0CKeywords : Activation , Ion Fe (III), Activated Carbon

MODEL KESETIMBANGAN PADA ADSORPSI ION KADMIUM MENGGUNAKAN HIDROKSIAPATIT DARI KULIT KERANG DARAH Yenti, Silvia Reni; Fadli, Ahmad; Drastinawati, Drastinawati; Zultiniar, Zultiniar; Nisa, Aidina Fahrun
Jurnal Sains dan Teknologi Vol 17, No 1 (2018): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

Pencemaran logam berat kadmium (Cd2+) di perairan mengakibatkan kerusakan yang besar bagi kehidupan manusia. Salah satu cara untuk menghilangkan dan mengurangi logam cadmium adalah menggunakan proses adsorpsi. Larutan kadmium (Cd2+) 3mg/L sebanyak 200 mL ditambahkan HAp 0,5 gr dan diaduk dengan kecepatan 100, 200 dan 300 rpm pada suhu 30°C, 40°C dan 50°C. Larutan kemudian dianalisa menggunakan Atomic Adsorption Spectroscopy (AAS) untuk mengetahui konsentrasi kadmium. Semakin besar suhu adsorpsi maka kapasitas penjerapan adsorben HAp (Qe) semakin kecil. Semakin besar kecepatan pengadukan adsorpsi, maka semakin besar pula kapasitas penjerapan adsorben HAp (Qe). Mekanisme adsorpsi logam kadmium (Cd2+) menggunakan HAp memiliki kecocokan dengan model isotherm Freundlich yang mewakili adsorpsi fisika dengan kapasitas panas adsorpsi (ΔH) sebesar -1,665304 kcal/mol.K dan perubahan entropi (ΔS) didapatkan sebesar 15,76 J/mol.K.

Isolasi Kitin Dari Limbah Cangkang Kepiting Bakau (Scylla Olivacea) Dengan Variasi Konsentrasi Natrium Hidroksida Dan Suhu Pada Proses Pembuatan Serbuk Kitin Darmiyati, Siti; Drastinawati, Drastinawati; Yusnimar, Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Chitin is poly (2-acetamido-2-deoxy-β(1,4)-D-glucopyranose). Chitin can be isolated through several stages of chitin powder production, demineralization stage and bleaching stage. The purpose of this study is to learn the effect of concentration of sodium hydroxide and temperature in the process of chitin powder production, analyze chitin by using FTIR (Fourier Transform Infrared) spectrophotometer and determining moisture content, ash content and yield. The research procedure begins with crab shell waste size reduction into a powder size. The process of chitin powder production was carried out using concentration of NaOH variations (2.5%, 3.5% and 4.5%) and temperature (550C, 650C dan 750C), the ratio of 1:10 (w/v) for 2 hours and stirring speed 150 rpm, then demineralization process using HCl 1.5 N, the ratio of 1:15 (w/v) for 1 hour and stirring speed 150 rpm, then bleaching process using 4% NaOCl, the ratio of 1:15 (w/v) for 1 hour. The results showed that the higher concentration of NaOH and temperature, the yield, the water content and the resulting ash content were lower at 4.5% NaOH concentration and 750C at 15.54%, 4.13% and 0.5%. Based on the results of the obtained FTIR showed that the residue from isolation was chitin.Keywords: bleaching, crab shells, demineralization, FTIR, chitin.

Pemanfaatan Ekstrak Daun Ketapang (Terminalia catappa L.) sebagai Antibakteri untuk Produksi Sabun Cair Nurfatihayati, Nurfatihayati; Heltina, Desi; Putra, Eden; Delef, Fahrul Fajar; Alfarisi, Cory Dian; Drastinawati, Drastinawati
Eksergi Vol 21, No 1 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i1.10148

Ekstrak daun ketapang (Terminalia catappa L.) mengandung senyawa kimia antibakteri yang dapat dimanfaatkan dalam memproduksi sabun cair. Tujuan penelitian ini memperoleh sabun cair dan menentukan variasi terbaik ekstrak ketapang untuk sabun cair yang memenuhi mutu sabun cair SNI 4085-2017. Penelitian ini bersifat eksperimental yang terdiri dari ekstrak daun ketapang dengan konsentrasi 0%, 2%, 4%, dan 6% serta KOH 25%, 30% dan 35%. Pembuatan ekstrak daun ketapang dilakukan dengan cara maserasi. Proses pembuatan sabun menggunakan metode hot process. Pengujian sabun cair meliputi uji pH, asam lemak bebas, angka lempeng total, stabilitas busa, menghitung perolehan sabun cair, dan menentukan variasi terbaik ekstrak ketapang pada sabun cair. Hasil penelitian ini menunjukkan perolehan sabun cair terbesar terdapat pada konsentrasi KOH 30% dengan konsentrasi ekstrak 4%, yaitu 157,35 gram dan rendemen 52,45%. Variasi ekstrak daun ketapang terbaik diperoleh pada konsentrasi 4% pada konsentrasi KOH 25% dengan karakteristik sabun cair, yaitu pH 9,19, asam lemak bebas 1,74%, angka lempeng total 0 x 101 koloni/ml, stabilitas busa 96,26%, dan zona hambat 11 mm. Sabun cair dengan variasi ekstrak daun ketapang yang dihasilkan telah memenuhi standar SNI 4085:2017.

Pembuatan Pektin Dari Wortel dan Pemanfaatannya dalam Formulasi Pasta Gigi Al'farisi, Cory Dian; Mutamima, Anisa; Drastinawati, Drastinawati; Yelmida, Yelmida; Siahaan, Daniel Andica; Az Zahra, Alya
Stannum : Jurnal Sains dan Terapan Kimia Vol 7 No 1 (2025): April 2025
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v7i1.5053

Pectin, a complex polysaccharide derivative, is abundantly found in various fruits and vegetables. Due to its gel-forming ability, pectin plays a crucial role in the production of diverse food products, including jam, jelly, fruit preparations for yogurt, fruit juice, and others. The primary aim of this research was to ascertain the yield and extract the pectin content from carrots and investigate the impact of incorporating different concentrations of pectin into toothpaste formulations, comparing them against the SNI 12-3524-1995 standard. In this study, concentrations of pectin in toothpaste formulations were varied at 2.5%, 3%, 3.5%, and 4%. Pectin characteristics, encompassing yield, moisture content, equivalent weight, and methoxyl content, were examined, alongside assessments of toothpaste formulation characteristics, including organoleptic evaluation, pH testing, and spreadability testing. The research findings revealed that 13 grams of dried carrot powder yielded 1.17 grams of pectin, resulting in a 9% yield, 6.7% moisture content, an equivalent weight of 717 g/gmol, and a methoxyl content of 9.3%. Toothpaste testing indicated pH values of 7.63, 7.7, 7.26, and 7.06 for concentrations of 2.5%, 3%, 3.5%, and 4%, respectively. Organoleptic evaluations for each concentration revealed a thick texture, light brown and brown color, and mint and mild mint aromas. Spreadability test results for concentrations of 2.5%, 3%, 3.5%, and 4% were 3.1 cm, 3 cm, 2.8 cm, and 2.8 cm, respectively. While increasing the concentration of carrot pectin did not significantly impact the pH, color, aroma, and texture of the toothpaste formulation, it led to a decrease in spreadability.

Isolasi Kitin Dari Limbah Cangkang Kepiting Bakau (Scylla Olivacea) Dengan Variasi Konsentrasi Natrium Hidroksida Dan Suhu Pada Proses Pembuatan Serbuk Kitin Darmiyati, Siti; Drastinawati, Drastinawati; Yusnimar, Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Chitin is poly (2-acetamido-2-deoxy-β(1,4)-D-glucopyranose). Chitin can be isolated through several stages of chitin powder production, demineralization stage and bleaching stage. The purpose of this study is to learn the effect of concentration of sodium hydroxide and temperature in the process of chitin powder production, analyze chitin by using FTIR (Fourier Transform Infrared) spectrophotometer and determining moisture content, ash content and yield. The research procedure begins with crab shell waste size reduction into a powder size. The process of chitin powder production was carried out using concentration of NaOH variations (2.5%, 3.5% and 4.5%) and temperature (550C, 650C dan 750C), the ratio of 1:10 (w/v) for 2 hours and stirring speed 150 rpm, then demineralization process using HCl 1.5 N, the ratio of 1:15 (w/v) for 1 hour and stirring speed 150 rpm, then bleaching process using 4% NaOCl, the ratio of 1:15 (w/v) for 1 hour. The results showed that the higher concentration of NaOH and temperature, the yield, the water content and the resulting ash content were lower at 4.5% NaOH concentration and 750C at 15.54%, 4.13% and 0.5%. Based on the results of the obtained FTIR showed that the residue from isolation was chitin.Keywords: bleaching, crab shells, demineralization, FTIR, chitin.

Pembuatan Minyak Atsiri dari Komoditas Alam Daun Kayu Putih Al'farisi, Cory Dian; Zahrina, Ida; Drastinawati, Drastinawati; Khairat, Khairat; Herman, Syamsu; Utami, Anggia Afza; Alfajar, Fariz
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.29-35

Eucalyptus oil is one of the essential oil obtained from the extraction of eucalyptus leaves. The purpose of this study is to evaluate the effect of variations in sample treatment and extraction time on the yield of eucalyptus essential oil and determine the characteristics of eucalyptus essential oil produced by the hydro distillation method. Variations in sample treatment were carried out by chopping, crushing, and blending dry eucalyptus leaves. 500 grams eucalyptus leaves are weighed and put in a 2000 mL flask. ±1000 mL of distilled water was added and the extraction process was carried out for 5, 6 and 7 hours. The results showed that the highest yield was obtained from blending treatment with an extraction time of 7 hours with a yield of 0.58%. Characteristic tests on eucalyptus leaf essential oil included: color, odor, specific gravity, refractive index and solubility in ethanol 80%. From the analysis of the test results, the color of eucalyptus oil is cloudy. The odor test results obtained are the distinctive odor of eucalyptus. The best value of eucalyptus oil specific gravity was 0.913 on crushed leaves for 6 hours. In the ethanol solubility test, the resulting oil dissolves in ethanol and a clear solution is obtained. The highest refractive index value of eucalyptus oil on chopped leaves for 5 hours is 1.469. Eucalyptus oil has a quality in accordance with the quality requirements of SNI 3954: 2014.

Pembuatan Biodiesel dari Minyak Sawit Off-Grade Menggunakan Katalis CaO Melalui Proses Dua Tahap Putri, Febrina Dwi; Helwani, Zuchra; Drastinawati, Drastinawati
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 3 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i3.3063

Biodiesel merupakan sumber bahan bakar alternatif yang bisa dihasilkan dari minyak nabati melalui transesterifikasi dengan metanol. Sawit Off-grade merupakan salah satu sumber minyak nabati yang mempunyai potensi untuk digunakan sebagai bahan dasar produksi biodiesel. Reaksi transesterifikasi dilangsungkan dengan bantuan katalis CaO dari cangkang telur yang dikalsinasi pada suhu 900C selama 2 jam. Tujuan dari penelitian ini adalah untuk memproduksi biodiesel dari minyak sawit off-grade melalui reaksi dua-tahap, melihat performa katalis Cao terhadap reaksi transesterifikasi, serta mempelajari pengaruh temperatur reaksi, rasio mol minyak:metanol dan konsentrasi katalis terhadap yield biodiesel pada reaksi transesterifikasi. Esterifikasi dilakukan pada suhu 60C dengan perbandingan mol minyak:metanol 1:12 menggunakan 1%wt katalis H2SO4. Asam lemak bebas (ALB) tereduksi dari 16,18% menjadi 0,6%. Reaksi transesterifikasi dilakukan dengan variasi perbandingan mol minyak:metanol 1:7, 1:9, 1:11, konsentrasi katalis 2%wt, 4%wt, 6%wt, serta suhu reaksi pada 50C, 60C, 70C selama 2 jam. Data yang diperoleh diproses dengan menggunakan response surface methodology (RSM), sedangkan jumlah eksperimen ditentukan dengan central composite design (CCD). Yield yang diperoleh pada penelitian ini yaitu sebanyak 62,30%-87,41%. Yield optimum dihasilkan pada reaksi dengan suhu 70C menggunakan minyak:metanol dengan perbandingan 1:11 dan katalis CaO 2%wt. Kondisi proses yang berpengaruh terhadap yield biodiesel adalah suhu reaksi, perbandingan mol minyak:metanol, serta interaksi antara suhu dengan perbandingan mol minyak:metanol. Akan tetapi tidak ditemukan adanya pengaruh signifikan konsentrasi katalis terhadap yield biodiesel.

Pemanfaatan Ekstrak Daun Ketapang (Terminalia catappa L.) sebagai Antibakteri untuk Produksi Sabun Cair Nurfatihayati, Nurfatihayati; Heltina, Desi; Putra, Eden; Delef, Fahrul Fajar; Alfarisi, Cory Dian; Drastinawati, Drastinawati
Eksergi Vol 21 No 1 (2024)
Publisher : Prodi Teknik Kimia, Fakultas Teknik Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v21i1.10148

Ekstrak daun ketapang (Terminalia catappa L.) mengandung senyawa kimia antibakteri yang dapat dimanfaatkan dalam memproduksi sabun cair. Tujuan penelitian ini memperoleh sabun cair dan menentukan variasi terbaik ekstrak ketapang untuk sabun cair yang memenuhi mutu sabun cair SNI 4085-2017. Penelitian ini bersifat eksperimental yang terdiri dari ekstrak daun ketapang dengan konsentrasi 0%, 2%, 4%, dan 6% serta KOH 25%, 30% dan 35%. Pembuatan ekstrak daun ketapang dilakukan dengan cara maserasi. Proses pembuatan sabun menggunakan metode hot process. Pengujian sabun cair meliputi uji pH, asam lemak bebas, angka lempeng total, stabilitas busa, menghitung perolehan sabun cair, dan menentukan variasi terbaik ekstrak ketapang pada sabun cair. Hasil penelitian ini menunjukkan perolehan sabun cair terbesar terdapat pada konsentrasi KOH 30% dengan konsentrasi ekstrak 4%, yaitu 157,35 gram dan rendemen 52,45%. Variasi ekstrak daun ketapang terbaik diperoleh pada konsentrasi 4% pada konsentrasi KOH 25% dengan karakteristik sabun cair, yaitu pH 9,19, asam lemak bebas 1,74%, angka lempeng total 0 x 101 koloni/ml, stabilitas busa 96,26%, dan zona hambat 11 mm. Sabun cair dengan variasi ekstrak daun ketapang yang dihasilkan telah memenuhi standar SNI 4085:2017.

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