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All Journal Jurnal Penelitian Hasil Hutan Jurnal Teknik Sipil Journal of Science and Applicative Technology Jurnal Ilmu dan Teknologi Kayu Tropis PERENNIAL Journal of Sylva Indonesiana Jurnal Penelitian Hasil Hutan Jurnal Sylva Lestari Jurnal Ilmu Kehutanan Jurnal Ilmu Kehutanan International Journal of Renewable Energy Development
Deded Sarip Nawawi
Fakultas Kehutanan, Institut Pertanian Bogor, Kampus IPB Darmaga Bogor 16680.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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Kelarutan Lignin Kayu Cepat Tumbuh dalam Ekstraksi Alkali Deded Sarip Nawawi; Adesna Fatrawana; Wasrin Syafii
Jurnal Ilmu Kehutanan Vol 15 No 1 (2021): Maret
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (546.99 KB) | DOI: 10.22146/jik.v15i1.1512

Abstract

The dissolution of wood lignin in the alkali solution were analyzed for two fast growing species, sengon (Paraserianthes falcataria) dan leda (Eucalyptus deglupta). Wood samples were extracted in 1% sodium hydroxide solution in cold and hot temperatures for 24 and 1 h, respectively. Extractable substances content, permanganate consumption (expressed as assumed lignin content) were analyzed from the filtrates, lignin content and diastereomeric of β-O-4 structure were analyzed from the wood residue after alkali extraction. The extracted substances from both of wood in hot alkali was higher than in cold alkali solution, although the time of cold alkali extraction was much longer that hot alkali extraction. Assumed lignin content in the extract was quite high in both samples which were 34.4-42.9% and 35.5-39.8% including 2,15-2,29% dan 1,04-1,32% of lignin for cold and hot alkali extraction, respectively. The changes in stereo isomeric form, erythro and threo, of β-O-4 structure of lignin in wood residue indicated that partial depolimerization of lignin was takec place during alkali treatment.
Pengaruh Hot Water Extraction terhadap Sudut Kontak Octomeles sumatrana dan Duabanga moluccana dan Kaitannya terhadap Zat Ekstraktif dan Struktur Anatomi Kayu: Effect of Hot Water Extraction on Contact Angle of Octomeles sumatrana and Duabanga moluccana Woods and Its Correlation to the Extractive Content and Anatomical Structure Marbun, Sari Delviana; Wahyudi, Imam; Suryana, Jajang; Nawawi, Deded Sarip; Ratih, Damayanti; Silaban, Rosalia
PERENNIAL Vol 21 No 2 (2025): Vol. 21 No. 2, October 2025
Publisher : Forestry Faculty of Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24259/perennial.v21i2.44044

Abstract

Binuang bini (Octomeles sumatrana) and binuang laki (Duabanga moluccana) are fast growing species that have the potential to be developed as engineered wood products. However, previous studies have shown that both wood species have high contact angle values due to the extractive content and the high acidity. Therefore, this study aimed to examine the effect of hot water extraction (HWE) pretreatment to eliminate these limiting factors. The results proved that HWE pretreatment statistically significantly decreased the contact angle of binuang bini wood but not for binuang laki wood. HWE pretreatment resulted in a decrease in the levels of hot water-soluble extractive content and degradation of other wood chemical components. The different effectiveness of HWE pretreatment on binuang bini and binuang laki wood on improving the contact angle is influenced by differences in the quantity and quality of extractive substances as well as differences in the anatomical structure characteristics of these species.
Enhancing solid fuel potential of water hyacinth: A study on chemical modification through composting and demineralization Mustagfirin, Mustagfirin; Hermawan, Dede; Nawawi, Deded Sarip; Kusumah, Sukma Surya; Ismayati, Maya; Sutiawan, Jajang; Ningrum, Riska Surya; Wikantyoso, Bramantyo
International Journal of Renewable Energy Development Vol 15, No 1 (2026): January 2026
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61468

Abstract

Rapid growth makes water hyacinth (WH) an exceptional biomass resource, but its low calorific value and elevated ash content hinder its application as a sustainable green energy source. This study aims to enhance the quality of water hyacinth as a solid fuel by increasing lignin content through composting and decreasing ash content by demineralization. The composting period for water hyacinth was modified to 4, 7, 11, and 15 days, followed by a demineralization process employing two solvents: water and 5% nitric acid (HNO₃). Proximate, ultimate, and chemical studies were conducted on water hyacinth before and following treatment to ascertain its specific alterations. This study indicates that after 15 days of composting, the lignin fraction increased from 10.01% to 15.14%. Demineralization employing a combination of water and nitric acid can substantially reduce ash content (19.4%). The demineralization of raw materials during composting is more efficacious in diminishing ash content than the demineralization of raw materials before composting. The most significant reduction was 46.17%, observed in the 11-day WH composting, where the ash content decreased from 22% to 11.84%. According to the results, modified WH is a viable raw material for solid fuel due to its enhanced lignin content and reduced ash level.
Optimizing Nitric Acid Leaching Conditions for Ash and Potassium Reduction in Empty Fruit Bunches-Based Biomass Energy Santosa, Dwi Jaksana Megah; Hermawan, Dede; Surya Kusumah, Sukma; Nawawi, Deded Sarip; Sutiawan, Jajang
Journal of Sylva Indonesiana Vol. 9 No. 01 (2026): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsi.v9i01.23044

Abstract

Oil palm empty fruit bunches (EFB) represent an abundant biomass waste in Indonesia with high potential as a solid biofuel. However, the high ash content and the presence of alkali metals such as potassium in EFB contribute to low combustion efficiency and increase the risks of fouling and slagging. This study aims to reduce the ash and potassium content in EFB-based biomass fuel through demineralization using nitric acid (HNO₃). Acid demineralization was conducted using various acid concentrations (1%, 3%, and 5%) and soaking durations (10, 30, and 60 minutes). The parameters analyzed include ash content, calorific value, potassium content, as well as proximate and ultimate analysis. The results indicate that demineralization using 1% nitric acid for 10 minutes is the optimum condition, successfully reducing the ash content from 7.93% to 3,43% and reduced potassium by 77% (0,087%- 0,02%). In addition, the fix carbon increased (16,11%-18,09%), sulfur decreased (0,115%-0,086%), and the calorific value increased to 4355,83 cal/g. This treatment also increased the carbon and hydrogen content while reducing sulfur content, thereby improving thermal quality and reducing emissions. Acid demineralization using low-concentration nitric acid is effective in reducing ash and potassium content, thereby enhancing the performance of EFB-based biopellets as a biomass energy source.
Co-Authors Abi K Arif Adesna Fatrawana Adesna Fatrawana Adesna Fatrawana Aginsa T. Putri Akhiruddin Maddu Anak Agung Istri Sri Wiadnyani Anjar A Widyorini Anne Carolina Benny Murwentiano Cahyo Werdiningsih D R Agungpriyono Dede Hermawan Deni Darmawan Deni Setiawan Denni Prasetia Devi Armilasari Dewi R Agungpriyono Dwi P Lestari Dwi Premadha Lestari Dwi R. Endriadilla Effendi Tri Bahtiar Eko S Pribadi Elvara D Satria Erika Novriyanti Esti Prihatini Fabianus Ranta Fauzi Febrianto Gustan Pari I Nyoman Jaya Wistara I Wayan Darmawan IETJE WIENTARSIH Imam Wahyudi Indrawan, Imam Wahyudi Ismayati, Maya Istie Rahayu Itje Wintarsih Jajang Suryana Kusumah, Sukma Surya L N Sutardi Laswi Irmayanti Lestari, Dwi Premadha Lina Karlinasari Marbun, Sari Delviana Marwanto Marwanto Maulana, Muhammad I Maulana, Sena Muflihati Muflihati Muhammad Iqbal Maulana Mustagfirin Mustagfirin Nam-Hun Kim Naresworo Nugroho Nareworo Nugroho Nicken O Putri Ningrum, Riska Surya Nopen Meisaroh Nur Adi Saputra Nurhikmah Nurhikmah Park, Se-Hwi Rahmi Mauladdini Ratih, Damayanti Rio Ardiansyah Murda Rita K Sari Rita K Sari Rita Kartika Sari Rohmat Ismail Rynaldo Davinsy Santosa, Dwi Jaksana Megah Satriyo H Wicaksono Saviska Luqyana Fadia Se-Hwi Park Silaban, Rosalia Silmi Mariya Siti L Gusvina Siti Nikmatin Subangkit, Mawar Surdiding Ruhendi Surjono Suryokusumo Surya Kusumah, Sukma Suryokusumo, Surjono Sutiawan, Jajang Syamsul Arifin Tasya Saskia Trisna PRIADI Vetnizah Juniantito Wahyu Hidayat Wasrin Syafii Wikantyoso, Bramantyo