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All Journal Jurnal Natur Indonesia Jurnal Teknik Kimia USU The Journal of Experimental Life Sciences (JELS) Jurnal Ilmu Kimia Universitas Brawijaya Natural B The Journal of Pure and Applied Chemistry Research Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Jurnal Teknik Kimia USU Jurnal Ilmiah Berkala: Sains dan Terapan Kimia JURNAL REKAYASA KIMIA & LINGKUNGAN

Bambang Ismuyanto

Brawijaya University

Author-ID : 289710

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience

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ADSORPSI ION KALSIUM MENGGUNAKAN BIOMASSA ECENG GONDOK (Eichhornia crassipes) DIREGENERASI HCL Rakhmania, Citra Dewi; Khaeronnisa, Indah; Ismuyanto, Bambang; Nanda, Julia; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 1 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Water hyacinth (Eichhornia crassipes) is known as an aquatic weed that has rapid growth. However, the water hyacinth has the ability to remove metals from water as it acts as a natural adsorbent. Calcium ion is one of the metallic ions which can cause hardness and scaling in high temperature, resulting in a decrease of the efficiency of industrial equipment. In this research, the water hyacinth was regenerated with HCl and used as an adsorbent to adsorb calcium ion. The effect of HCl concentration and calcium ion concentration on the adsorption capacity of calcium ion was investigated. The results show that adsorption capacity of calcium ion increased as the concentration of HCl increased up to 3 M. At higher concentration of HCl, 4 M and 5 M, the adsorption capacity decreased because some functional groups of hydroxyl and carboxyl which play an important role in adsorption process are cleavage. Maximum adsorption capacity was achieved at 38,733 mg Ca/gr adsorbent with regeneration of adsorbent at HCl 3M and 500 ppm of calcium ion

PENGARUH pH DAN DOSIS KOAGULAN EKSTRAK BIJI KELOR DALAM KOAGULASI TERHADAP PENGURANGAN KEKERUHAN LIMBAH CAIR Herawati, Astrid; Asti, Riistika; Ismuyanto, Bambang; Nanda, Julia; Hidayati, A.S. Dwi Saptati N.
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 1 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

The presence of suspended and colloidal particles in water can cause turbidity. To reduce the turbidity, coagulationâ€“flocculation process is commonly used. In this process, the colloidal particle is converted into flocs which easily separated from water with the aid of coagulant. One of the natural coagulants that have been studied as water purifier is Moringa oleifera seeds. This research aims to reduce turbidity of kaolin synthetic wastewater through coagulationâ€“flocculation process using Moringa oleifera seeds that have been extracted with NaCl 1 M. The variables used in this study were wastewater pH (3, 6, 10, and 12) and coagulant dosage (0, 1, 2, 3, 4, and 5 mL/L). Â Coagulation-flocculation was taken place in Jar Test with rapid stirring 150 rpm in 2 minutes, followed by slow stirring 30 rpm in 30 minutes, and sedimentation for 30 minutes. Then, the water was analyzed using Turbidimeter. The results showed that coagulant dosage and pH affected the effectiveness of coagulation in decreasing turbidity. The optimum dosage of extracted Moringa oleifera seeds coagulant in coagulation of kaolin synthetic wastewater at pH 3, 6, 10, and 12 were 2 ml/L, 3ml/L, 2 ml/L, and 4 ml/L, respectively.

PENGARUH PENAMBAHAN KITOSAN TERHADAP EFEKTIVITAS PROSES KOAGULASI MENGGUNAKAN BESI (III) KLORIDA HEKSAHIDRAT Junisu, Belda Amelia; Handayani, Evi; Hidayati, AS Dwi Saptati Nur; Ismuyanto, Bambang; Himma, Nurul Faiqotul
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 1 No. 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Air gambut merupakan sumber air potensial yang dapat digunakan sebagai air bersih jika diolah terlebih dahulu, dimana penyisihan asam humat menjadi perhatian utama karena kandungannya yang tinggi menyebabkan kekeruhan, intensitas warna yang tinggi, dan sifat asam pada air gambut. Salah satu metode yang dapat digunakan untuk penyisihan asam humat dalam air gambut adalah koagulasi dengan menggunakansenyawa kimia berupa garam logam hidrolisis sebagai koagulan. Pada penelitian ini, Besi (III) Klorida (FeCl3.6H2O) digunakan sebagai koagulan untuk penyisihan asam humat.Penentuan kondisi optimum koagulasi dilakukan dengan variasi pH (6â€“9) dan dosis koagulan FeCl3.6H2O (20â€“100 ppm). Koagulasi kemudian dilakukan dengan penambahan kitosan sebagai koagulan pendukung untuk meningkatkan efektivitas proses koagulasi, dimana dosis kitosan divariasikan pada rentang 10â€“50 ppm.Diperoleh nilai pH optimum adalah pH 7 dan dosis FeCl3.6H2O sebesar 80 ppm dengan penurunan warna sebesar 88,08% dan kekeruhan sebesar 97,08%. Sedangkan dengan adanya penambahan kitosan hingga 50 ppm, penurunan warna dan kekeruhansemakin meningkat hingga Â 94,75% dan 99,07%.

Pemurnian Emas dari Bijih Emas Berkadar Rendah Menggunakan Karbon Aktif dari Arang Tempurung Kelapa Mulyasuryani, Ani; Ismuyanto, Bambang; Purwonugroho, Danar
Jurnal Natur Indonesia Vol 14, No 1 (2011)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

The activated carbon from the coconut shell can be used as an adsorbent for the recovery of gold. The optimum condition for gold recoverywas obtained at pH 3 (for adsorption) and pH 5 (for desorption) with 1 M thyocyanate solution and a 5 cm length of column (the mass ofactivated carbon is 20 grams). In this condition, the average gold recovery is 90.00%, silver 7.28% and copper 4.93%, that were used severalgold ore samples. The average purity degree of gold is 49.67%, depend on the concentration of gold, silver and copper in the gold oresample.

PEMBUATAN BIOETANOL DENGAN BANTUAN Saccharomyces cerevisiaeDARI GLUKOSA HASIL HIDROLISIS BIJI DURIAN (Durio zibethinus) Minarni, Neni; Ismuyanto, Bambang; Sutrisno, sutrisno
Jurnal Ilmu Kimia Universitas Brawijaya Vol 1, No 1 (2013)
Publisher : Jurusan Kimia, FMIPA Universitas Brawijaya

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Penelitian ini bertujuan untuk membuat bioetanol dari biji durian yang telah dihidrolisis oleh asam klorida. Glukosa hasil hidrolisis difermentasi menjadi etanol dengan bantuan S.cerevisiae dengan variasi pH fermentasi. Kadar etanol yang dihasilkan ditentukan menggunakan metode cawan conway. Berdasarkan penelitian yang telah dilakukan diperoleh kadar glukosa tertinggi dengan hidrolisis menggunakan HCl 4 M pada sirup glukosa sebesar 36400 ppm dan pada cake glukosa sebesar 20100 ppm pada hidrolisis menggunakan 1 M HCl. Dengan konsentrasi substrat glukosa 8000 ppm, kadar etanol tertinggi dihasilkan pada pH fermentasi 4 sebesar 1,61% (v/v).Kata kunci : biji durian, bioetanol, cawan conway, fermentasi, hidrolisis

KINETIKA REAKSI HIDROLISIS PATI BIJI DURIAN (Durio zibethinus Murr.) MENJADI GLUKOSA DENGAN VARIASI TEMPERATUR DAN WAKTU Anugrahini, Sarah Fitria Agung; Ismuyanto, Bambang; Indahyanti, Ellya
Jurnal Ilmu Kimia Universitas Brawijaya Vol 2, No 1 (2013)
Publisher : Jurusan Kimia, FMIPA Universitas Brawijaya

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ABSTRAK Penelitian ini bertujuan untuk mengetahui pengaruh temperatur dan waktu pada proses hidrolisis pati biji durian (Durio zibethinus Murr.) menjadi glukosa serta untuk menentukan kinetika reaksi pada proses hidrolisis tersebut. Proses hidrolisis dilakukan dengan menggunakan katalis HCl 3M. Variasi temperatur yang digunakan yaitu 50 oC dan 70 oC dengan variasi waktu sebesar 30, 60, 90, 120, 150 dan 180 menit. Kadar glukosa larutan hidrolisat kemudian dianalisis menggunakan reagen DNS. Berdasarkan hasil penelitian, dapat diketahui bahwa temperatur dan waktu hidrolisis mempengaruhi kadar glukosa. Semakin tinggi temperatur dan semakin lama waktu hidrolisis maka kadar glukosa larutan hidrolisat semakin meningkat. Kadar glukosa larutan hidrolisat kemudian digunakan untuk menentukan kinetika reaksi hidrolisis. Kinetika reaksi hidrolisis pati biji durian (Durio zibethinus Murr.) menjadi glukosa dapat dinyatakan dengan persamaan: k = 3,593 x 106 . e-10153,812/T M.menit -1 Katakunci: biji durian, glukosa, hidrolisis, kinetika, pati ABSTRACT This experiment aim to find out the influence of temperature and time on hydrolysis of durian (Durio zibethinus Murr.) seed starch become glucose and to determine the reaction kinetics of hydrolysis process. Hydrolysis process was conducted by using HCl 3M as catalyst. The temperature varied from 50 oC and 70 oC, while time variation varied from 30, 60, 90, 120, 150 and 180 minutes. Glucose levels of hydrolysate solution was analyzed using DNS reagent. This experiment resulted that temperature and hydrolysis time affected the glucose levels. Increasing of temperature and hydrolysis time produced higher glucose levels of hydrolysate solution. The glucose levels of hydrolysate solution used to determine the reaction kinetics. Reaction kinetics of durian seed hydrolysis become glucose stated with equation: k = 3,593 x 106 . e-10153,812/T M.minutes -1 Keywords: durian seed, glucose, hydrolysis, kinetics, starch

Opportunity of Applying Clean Production in UMKM (SMBs) Badminton Racket at Malang City Bambang Ismuyanto
Natural B, Journal of Health and Environmental Sciences Vol 1, No 2 (2011)
Publisher : Natural B, Journal of Health and Environmental Sciences

Small medium enterprise badminton racket in Malang consume water wastefully. Rinse water discharged into river and causing pollution problem. In fact, rinse water can still be utilized. Rinse water can be reused for anodizing other racket. The results showed that the rinse water could be used five times and the impact on saving electricity and water resources. Rinse water used to anodize produced products that are not much different if the new rinse water is used.

Potential of Sugar Cane As an Alternative Raw Material for Making Activated Carbons A.S. Dwi Saptati Nur Hidayati; Silva Kurniawan; Nalita Widya Restu; Bambang Ismuyanto
Natural B, Journal of Health and Environmental Sciences Vol 3, No 4 (2016)
Publisher : Natural B, Journal of Health and Environmental Sciences

This research studied to utilize the bagasse to be used as activated karbon in particular for the adsorption of Ca2+. The manufacture of activated carbon consists of carbonization dan activation process. Temperature variation for carbonization process in this research are 500°C, 550°C, 600°C, 650°C and 700°C then proceed with the activation process by carbon reflux with 6 M H2SO4 for 4 hours. Carbonization yield will decrease with increasing temperature carbonization. While the ash content, surface area, pore volume, and adsorption capacity of Ca2+ will increase with increasing temperature of carbonization. Obtained activated carbon is best activated karbon made at a temperature of 700°C with an activation carbonization which has a surface area 100.62 m2/g, 22.3750 Å pore diameter, pore volume of 22.376 mL/g, can eliminate the Ca2+ up to 13.26 %.

Synthesis of Patchouli Biochar Cr2O3 Composite Using Double Acid Oxidators for Paracetamol Adsorption Tutik Setianingsih; Masruri Masruri; Bambang Ismuyanto
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Composite built by patchouli biochar and metal oxide, Cr2O3, is a potential material for remediation of contaminated wasterwater. Oxidation of biochar using acid or salt oxidators can improve its surface polar functional groups. This treatment may be able to increase impregnation of metal cation (as salt) before calcination to form its oxide. In this research, 3 types of oxidators were used to oxidize the biochar before impregnation with purpose to study its influence toward physichochemistry and adsorption performance of the composite. Preparation of the composite included 3 steps, including preparation of biochar by pyrolisis of patchouli biomass using ZnCl2 activator at 450 oC, oxidation of the biochar using 3 different oxidators (H2SO4-HNO3, H3PO4-HNO3, H2O2–HNO3) at 60 oC, impregnation of the oxidized biochar using CrCl3 followed by calcination process to form biochar–Cr2O3 composite at 600 oC. Characterization using X-ray diffraction indicated that the composite containes the Cr2O3 structure. FTIR spectrophotometry characterization indicates the different content of C=O, C-O, and –OH on the composite surface. SEM images shows irregular micro ball shapes. EDX characterization indicates the different Cr content in the composite with same sequence with FTIR absorbances of both C-O and –OH. Adsorption of paracetamol indicates effect of Cr2O3 showing the same sequence of both.

KARAKTERISTIK LUMPUR LAPINDO DAN FLUKTUASI LOGAM BERAT Pb DAN Cu PADA SUNGAI PORONG DAN ALOO Alvin Juniawan; Barlah Rumhayati; Bambang Ismuyanto
Jurnal Sains dan Terapan Kimia Vol 7, No 1 (2013)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Penelitian ini mengkaji karakteristik dan fluktuasi logam berat Pb dan Cu dalam perairan Sungai Aloo dan Sungai Porong. Dalam penelitian ini pengambilan sampel lumpur Lapindo diambil dari 4 lokasi yang berbeda. Berdasarkan analisis karakteristik dari lumpur Lapindo diperoleh parameter fisik berat jenis berkisar 1,25-2,35 (cm.cm-3), dengan kandungan liat dan debu sebesar 34-53% dan 39- 46%, dimana tekstur dari lumpur Lapindo merupakan jenis lempung berliat. Untuk parameter kimia diperoleh nilai pH berkisar 6,6-7, KTK sebesar 3,89-35,42 me/100g), logam berat Pb sebesar 0,19-0,34 mg/L, Cu sebesar 0,19-0,85 mg/L, asam humat tidak teridentifikasi, kadar air sebesar 40,41-60,73% dan kandungan total karbon organik 54,75-55,47%. Fluktuasi logam berat Pb dan Cu pada lumpur Lapindo tertinggi terdapat pada lokasi air tawar yaitu SA1, SA2 dan SP1, SP2. Pada Sungai Aloo, fluks logam tertinggi adalah untuk Cu, sedangkan pada Sungai Porong fluks logam tertinggi adalah Pb. Kata kunci : fluktuasi logam berat , lumpur Lapindo

Co-Authors A.S. Dwi Saptati N. Hidayati, A.S. Dwi Saptati N. A.S. Dwi Saptati Nur Hidayati Afifa, Ulfiana Ihda Aldriana, Putri Alvin Juniawan Ani Mulyasuryani Anugrahini, Sarah Fitria Agung AS Dwi Saptati Nur Hidayati, AS Dwi Saptati Nur AS Hidayati Astrid Herawati, Astrid Bambang Poerwadi Barlah Rumhayati Barlah Rumhayati Belda Amelia Junisu, Belda Amelia Citra Dewi Rakhmania, Citra Dewi Danar Purwonugroho Ellya Indahyanti Evi Handayani, Evi Hidayanti, Anisa Hidayati, A.S Dwi Saptati Nur Hidayatul Rohmawati Indah Khaeronnisa, Indah Irfan Budiarta Islam, Livya Safira Julia Nanda, Julia Juliananda Juliananda Juliananda, Juliananda Luthfi Kurnia Dewi, Luthfi Kurnia Masruri Masruri Milenia, Rohmah Minarni, Neni Moh. Sholichin Nalita Widya Restu Nurul Faiqotul Himma Nurul Faiqotul Himma, Nurul Faiqotul Pratama, Borneo Satria Riistika Asti, Riistika Rosyadi, Ahmad Ridwan Saptati N. H., A. S. Dwi Silva Kurniawan Susilo, H. Sutrisno, Sutrisno Tutik Setianingsih Wibowo, Ayu Indah

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