Articles

PRODUCTION OF SODIUM LIGNOSULPHONATE FROM ISOLATED LIGNIN OF EMPTY FRUIT BUNCH : INDENTIFICATION AND PERFORMANCE TEST AS A DISPERSANT AGENT Ismiyati, .; Suryani, Ani; Mangunwidjaya, Djumali; Machfud, .; Hambali, Erliza
Journal of Agroindustrial Technology Vol. 19 No. 1 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

Sodium lignosulphonate is a product of isolated lignin sulphonation process using NaHSO3 as sulphonation agent. This research was proposed to produce sodium lignosulphonate , to identify and to charactirize the product as dispersant agent. The lignin sulphonation process was conducted by ratio of reactant variable (NaHSO3 and lignin) 60.32%, pH 6.03 and temperature at 90.28 OC on batch reactor. The identification was carried out by Fourier Transform Infrared (FTIR) and by Liquid Chromatography Mass Spectrophotometer (LCMS). Identification using FTIR and LCMS spectrophotometer indicated that SLS produced from this study has similar characteristic with SLS standard from Aldrich (SLS-Aldrich). Performance test of SLS as dispersant materials for gypsum paste pointed out that this SLS has lower performance than SLS-Aldrich. This was caused by the purity of SLS standard, 96%. Nevertheless SLS still fulfilled the characteristic as dispersant materials for gypsum paste because it has purity of more than 80%. Keywords: lignin, sulphonation, sodium lignosulphonate, dispersant
PERAN PEG 400 DALAM PEMBUATAN LEMBARAN BIOPLASTIK POLOHIDROKSIALKANOAT YANG DIHASILKAN OLEH RALSTONIA EUTROPHA DARI SUBSTRAT HIDROLISAT PATI SAGU Syamsu, Khaswar; Hartoto, Liesbetini; Fauzi, Anas Miftah; Suryani, Ani; Rais, Dede
Jurnal Ilmu Pertanian Indonesia Vol. 12 No. 2 (2007): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

The purpose of the research was to investigate the effects of PEG 400 addition on the characteristics of bioplastic polyhydroxyalkanoates (PHA). PHA was obtained by cultivating Ralstonia eutropha on hydrolysed sago starch substrate using fed batch method for approximately 96 hours. The biomass concentration obtained was 4 g/L with PHA yield 20-30% of dry cell weight. The bioplastic was formed with solution casting method in which chloroform was used as solvent and PEG 400 was used as plasticizer. The concentrations of PEG 400added were 10, 20, and 30% (w/w), respectively. Bioplastic properties which were tested were tensile strength, elongation to break, density, thermal properties, cristalinity, and functional group. The addition of plastisizer tend to increase tensile strength and elongation to break, but decrease density, cristalinity and melting point. Bioplastic with 30% PEG 400 addition gave the best results. Bioplastic with 30% PEG 400 gave a value of tensile strength of 0.083 MPa; elongation to break of 0.881%; density of 0.7881 g/cm3;  melting point of 158.95 ac; and cristalinity of 44.58%. With these properties, the resulted bioi plastic may be used for surgical strings. Keywords: Bioplastic, Polyhydroxyalkanoates (PHA), Ralstonia eutropha, hidrolysed sago starch, PEG 400
EPIDEMIOLOGI HAWAR DAUN BIBIT PINUS MERKUSII YANG DISEBABKAN OLEH PESTALOTIA THEAE (EPIDEMIOLOGY OF NEEDLE BLIGHT ON PINUS MERKUSII SEEDLINGS INCITED BY PESTALOTIA THEAE) ., Sutarman; Hadi, Soetrisno; Saefuddin, Asep; ., Achmad; Suryani, Ani
Jurnal Manajemen Hutan Tropika Vol. 10 No. 1 (2004)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

The objectives of the study are as follows: to know the interrelationships between the weather components as well as Pestalotia theae's aerial conidiospore population and the development of needle blight on Pinus merkusii seedlings, and to determine the effect of nursery site on the early development of the disease. Two week's average without interval model is the most reliable model to be used for determining the interrelationship between the development of the disease severity and the weather components. Light duration, rain fall, relative humidity and temperature are the weather components significantly affect the increase of the disease severity. The nursery in Pongpoklandak, Cianjur (26,5 - 30,5 oC; RH: 92-98 %), West Java, is the most optimal location for the development of the disease. To maintain the Disease Index at the most about 25 on seedlings over 6 months old, is the key factor for the successful management of needle blight on P. merkusii seedlings in the nursery.Keyword: Pinus merkusii, Pestalotia theae, epidemi, Indeks Penyakit
PENENTUAN LAMA SULFONASI PADA PROSES PRODUKSI SURFAKTAN MES UNTUK APLIKASI EOR Rival, Mira; Irawadi, Tun Tedja; Suryani, Ani; Setyaningsih, Dwi; Hambali, Erliza
Jurnal Ilmu Pertanian Indonesia Vol. 16 No. 1 (2011): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

For producing oil remains that remained at old oil wells (mature field), a method of advanced oil acquirement improvement known as an Enhanced Oil Recovery (EOR) should be applied. Surfactant plays an important role in EOR process by reducing interfacial tension (1FT), altering wettability, reducing oil viscosity, and stabilizing dispersion to facilitate the process of oil jetting from reservoir to production well. To optimally cleanse oil that still remained a surfactant compatible with formation water and reservoir is needed. This study was conducted to get the best time of sulfonation process for producing MES surfactant with lower interfacialtension for EOR application. Results showed that the best times of sulfonation process with lower interfacial tension value were 3 and 4 hours.
PENDAPATAN DAN TINGKAT KESEJAHTERAAN RUMAH TANGGA PETANI KOPI DI KECAMATAN ULU BELU KABUPATEN TANGGAMUS Hutasoit, Maylani Florensi; Prasmatiwi, Fembriarty Erry; Suryani, Ani
Jurnal Ilmu-Ilmu Agribisnis Vol 7, No 3 (2019)
Publisher : Lampung University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jiia.v7i3.346-353

Abstract

The purpose of this study is to analyse household income and welfare of coffee farmers. This research was conducted in two villages, i.e. Ngarip Village and Sukamaju Village in Ulu Belu Subdistrict, Tanggamus Regency. The sampling used is a systematic random sampling with total samples of 38 farmers taken proportionally from each village. This research was conducted in April-June 2017. The research method is a survey method with quantitative analysis method. The results showed that the average income of farmers is Rp37,28,118.44 per year. According to Sajogyo expenditure indicator, the welfare of farmers is in a decent enough category, and according to Statistics Bureau (BPS) 2015 indicator, farmers' welfare is in high category.Key words: expenditure, income, welfare
IMPACT OF BIODIESEL AGROINDUSTRY ON THE ACHIEVEMENT OF NATIONAL ENERGY SECURITY Firdaus, Alfa; Machfud, Machfud; Suryani, Ani; Achsani, Noer Azam
SINERGI Vol 24, No 2 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2020.2.009

Abstract

The National Energy General Plan (RUEN) has set 11.6 million kiloliters of biodiesel production target in 2025. The determination of biodiesel production targets in RUEN is part of the objectives mandated in the National Energy Policy (KEN), which is to achieve energy security and independence. Therefore, this study aims to analyze the impact of biodiesel agroindustry on the achievement of national energy security in 2025. The simulation conducted in this study uses Long-range Energy Alternatives Planning (LEAP) software, which based on the accounting model. The model has run on Business as Usual (BAU) scenario, using four dimensions and 12 indicators of energy security in the context of biodiesel agroindustry. Model simulation results show a decreasing energy security trend in the period of 2022-2025, while the biodiesel production target, which was set at RUEN, cannot be achieved in 2025. This is mainly related to availability and affordability, which experienced a decline in the period. Further research needs to be done on the strategy of developing biodiesel agroindustry by considering scenarios of increasing production capacity and productivity as well as its impact on national energy security.
SYNTHESIS OF TRIMETHYLOLPROPANE ESTERS OF CALOPHYLLUM METHYL ESTERS : EFFECT OF TEMPERATURE AND MOLAR RATIO Widyawati, Yeti; Suryani, Ani; Romli, Muhammad; Sukardi, Sukardi
International Journal of Renewable Energy Development Vol 3, No 3 (2014): October 2014
Publisher : Center of Biomass & Renewable Energy, Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.796 KB) | DOI: 10.14710/ijred.3.3.188-192

Abstract

Trimethylolpropane esters were synthesized by transesterification of calophyllum methyl esters and trimethylolpropane using a calcium oxide as the catalyst. The results showed that the optimal reaction conditions (temperature: 130 0C, reaction time: 5 h, reactant molar ratio: 3.9:1, catalyst amount 3%w/w, and formed  trimethylolpropane ester of 79.0% were obtained. The basic physicochemical properties of the trimethylolpropane esters were the following : kinematic viscosities of 56.40 cSt and 8.8 cSt at 40 0C and 100 0C,  viscosity index 193, flash point 218 0C and pour point -3 0C. So Methyl esters of fatty acids of would callophylum  methyl ester is good raw material for the synthesis of lubricating oils.
THE INFLUENCE OF REACTANT RATIO (EUPCALYPTUS LIGNIN – SODIUM BISULFITE) AND INITIAL PH TOWARDS CHARACTERISTCS OF SODIUM LIGNOSULFONATE Syahbirin, Gustini; Darwis, ABDUL Aziz; Suryani, Ani; Syafii, Wasrin
Journal of Agroindustrial Technology Vol. 19 No. 2 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

Eucalyptus lignin was isolated from kraft black liquor through by acidification using H2SO4. Sulfonation of eucalyptus lignin produced sodium lignosulfonate (SLS) which can be used as dispersants, and emulsifier. In this research, sulfonation was carried out towards lignin with mass ratio of eucalyptus lignin-NaHSO3 (b/b) of 1:0.4, 1:0.5, and 1:0.6, and initial pH of 5, 6, 7, 8. Studies on the effect of various ratio of eucalyptus lignin versus NaHSO3 (1 based on w/w) and initial pH of 5,6,and 7 for the sulfonation reaction showed an  increasing yield and improved purity of SLS obtained.  However, no significant result was observed on the application of initial pH  7 and 8 toward increasing of SLS yield and purity.  The highest SLS  yield of 83.8% with  purity of 82.9% was obtained under condition of initial pH at 7 and the mass ratio of eupcayptus lignin over NaHSO3 was 1:0.5.  The resulted SLS was light brown, water soluble, with  pH level between 6.3 and 7.24, and released sulfur-like odor.Key words: lignin, kraft black liquor,  sodium lignosulfonate.
USAHATANI, PENDAPATAN DAN KESEJAHTERAAN PETANI KOPI DI LAMPUNG BARAT Tania, Rafika; Widjaya, Sudarma; Suryani, Ani
Jurnal Ilmu-Ilmu Agribisnis Vol 7, No 2 (2019)
Publisher : Lampung University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jiia.v7i2.149-156

Abstract

The purposes of this research were to analyze the level of household income and the welfare of coffee farmers in Gunung Terang Village, Air Hitam District, West Lampung Regency.  This research location was chosen purposively in Gunung Terang Village, Air Hitam District, West Lampung Regency.  The research was conducted by survey method.  Data collection was carried out in October 2017 until November 2017.  The sample size was 40 coffee farmers who were drawn by simple random sampling technique.  The analysis used analysis of farm income and household welfare according to Sayogyo criteria.  The results of this study indicate that the average household income of coffee farmers in Gunung Terang Village, Air Hitam Subdistrict, West Lampung Regency were relatively high and the welfare of coffee farmer households based on Sayogyo criteria were categorize as prosperous.Key words: coffee, income, prosperity
IMPACT OF BIODIESEL AGROINDUSTRY ON THE ACHIEVEMENT OF NATIONAL ENERGY SECURITY Firdaus, Alfa; Machfud, Machfud; Suryani, Ani; Achsani, Noer Azam
SINERGI Vol 24, No 2 (2020)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (524.724 KB) | DOI: 10.22441/sinergi.2020.2.009

Abstract

The National Energy General Plan (RUEN) has set 11.6 million kiloliters of biodiesel production target in 2025. The determination of biodiesel production targets in RUEN is part of the objectives mandated in the National Energy Policy (KEN), which is to achieve energy security and independence. Therefore, this study aims to analyze the impact of biodiesel agroindustry on the achievement of national energy security in 2025. The simulation conducted in this study uses Long-range Energy Alternatives Planning (LEAP) software, which based on the accounting model. The model has run on Business as Usual (BAU) scenario, using four dimensions and 12 indicators of energy security in the context of biodiesel agroindustry. Model simulation results show a decreasing energy security trend in the period of 2022-2025, while the biodiesel production target, which was set at RUEN, cannot be achieved in 2025. This is mainly related to availability and affordability, which experienced a decline in the period. Further research needs to be done on the strategy of developing biodiesel agroindustry by considering scenarios of increasing production capacity and productivity as well as its impact on national energy security.
Co-Authors - Ismarsudi, - - Jaja . Ismiyati . Machfud ., Suharman Aam Aminah Abdul Aziz Darwis ACHMAD . Adisalamun Adisalamun Agus Hudoyo Agus Ruswandi Agus Sudiman Tjokrowardojo, Agus Sudiman Alfa Firdaus Amalia Fitria Amun Amri Anas Miftah Fauzi Anna Fatchiya Aris Munandar Arlin, Nadia Ariandika Asep Korlan Dedi, Asep Korlan Asep Saefuddin Babas Bastaman Budi Suharjo Bustanul Arifin Dadang, NFN Darwin Kadarisman Dede J. Sudrajat Dede Rais DEDY DURYADI SOLIHIN Djoko Susanto Djumali Mangunwidjaja Djumali Mangunwidjaya Dwi Haryono Dwi Setyaningsih Dyah Aring Hepiana Lestari E. Gumbira Said Edi Zulchaidir Edy Mulyono Eko Ruddy Cahyadi Endrawati, Yuni Cahya Eprianda, Dian Erliza Hambali Evi Savitri Iriani, Evi Savitri Februadi Bastian Fembriarti Erry Prasmatiwi Gustini Syahbirin Hutasoit, Maylani Florensi Illah Sailah Iman Rusmana Indah Yuliasih Is Sulistyati Iskandar Z. Siregar ISKANDAR ZULKARNAEN SIREGAR Jalika, Tri Uli Jenny Laura Ulina Panjaitan Khairunnisa, Tsuraya Khaswar Syamsu Komar Sumantadinata Ktut Murniati Kurniadi, Dedi Siswana Lestari, Retno Sri Endah Liesbetini Hartoto Lotulung, Puspa Dewi M. Iwan Fermi Machfud Machfud Meika Syahbana Rusli Mira Rival Muhammad Irfan Affandi Muhammad Romli N.Kurniadji, Mochamad Noerdin Ningsih, Dwi Surya NISA RACHMANIA MUBARIK Noer Azam Achsani Nur Atifah Nurul Huda Prasmatiwi, Fembriarty Erry Rani Satiti Risfaheri, nFN Risfaheri, nFN Rivai, Mira Rizal Syarief Safa'at, Ikhwan Salundik Dohong Sari, Asdani Muatika Sazmi, Ramon Musikal Setyadjit, nFN Setyadjit, nFN Siburian, Radot Vernando Silvester Tursiloadi Siti Mujdalipah Sitorus, Friska Soeharto Honggokusumo Soetrisno Hadi Subyakto Subyakto Sudarma Widjaya, Sudarma Sukardi . Sukardi Sukardi Sunarti, Titi C Supriyanto Supriyanto Supriyanto, NFN Sutarman . Syah Johan Syamani, Firda A Tania, Rafika TATANG HIDAYAT, TATANG Tesar Dzikrulloh Titi C. Sunarti TITI CANDRA SUNARTI Tri Handayani Kurniati Triani, Theresia Lilik Tun Tedja Irawadi Virgiana, Sita Waryat, Waryat Wasrin Syafii Wilson H Limbong, Wilson H Wulandari, Dina Yaktiworo Indriani Yandra Arkeman Yeti Widyawati Zulfansyah Zulfansyah