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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences Jurnal Filsafat JURNAL BIOLOGI INDONESIA Halu Oleo Law Review Jurnal Energi dan Lingkungan (Enerlink) Jurnal Masyarakat dan Budaya
Herman Hidayat, Herman
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Social Sciences

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Adopting Western Culture or Enhancing Indigenous Culture: Takdir Alisyahbana's Discourse on Indonesian Path toward Progress Hidayat, Herman
Jurnal Filsafat "WISDOM" Jurnal Filsafat Seri 28 Juli 1997
Publisher : Fakultas Filsafat, Universitas Gadjah Mada Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2298.114 KB) | DOI: 10.22146/jf.31660

Abstract

It was a historical event on Indonesian history, white held a polemic of culture on June 8-10, 1935 in Solo.
National Park Management in Local Autonomy: from The Viepoint of Political Conservation in Biology: A Case Study of Tanjung Puting- Central Kalimantan Hidayat, Herman
JURNAL BIOLOGI INDONESIA Vol 5, No 2 (2008): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v5i2.3194

Abstract

ABSTRAKPengelolaan Taman Nasional dalam Era Otonomi Daerah Dilihat dari Perspektif PolitikKonservasi Biology: Studi Kasus Tanjung Puting -Kalimantan Tengah. Paper ini menganalisispengelolaan taman nasional dilihat dari perspektif politik ekologi yang menekankan atas perandan persepsi ‘stakeholders’. Peran taman nasional adalah sangat penting sebagaibenteng terakhir dalam menjaga keberadaan hutan alam. Tetapi, kondisi riil Taman NasionalTanjung Puting sekarang ini menghadapi suatu ancaman, karena dua faktor penting yakniadanya praktek aktivitas illegal logging dan penggalian untuk usaha tambang, yang dilakukanoleh para pedagang kayu dan investor lokal dari luar dengan menyuruh masyarakat lokal untukmemotong pohon dan menggali tanah. Dengan demikian, untuk mengantisipasi masalah yangkritis tersebut, diperlukan aksi afirmatif seperti pengelolaan kolaborasi dengan berbagaistakeholders (pemerintah daerah baik propinsi dan kabupaten, LSM, masyarakat lokal) atasprogram reboisasi berbagai pohon, penegakkan hukum, sanksi yang keras, dan pemberdayaanekonomi dan sosial bagi masyarakat lokal. Terjadi juga konflik kepentingan antara pemerintahpusat dan daerah dalam pengelolaan sumber daya hutan, khususnya taman nasional.Pemerintah pusat berpendapat, berdasarkan UU No.5/1990, pasal 14, yang menekankan ‘tamannasional sebagai sarana preservasi hutan alam yang memilki kehidupan ekosistem yang unikdan dikelola berdasarkan sistem zonasi (inti, rimba dan riset). Kewenangan pengelolaan tamannasional tersebut diberikan kepada pemerintah pusat, karena misi utamanya ialah ialah untukmenjaga keanekaragaman hayati, memproteksi dan mengembangkannya. Sebaliknya pemerintahdaerah (Propinsi dan Kabupaten) berpendapat, bahwa keberadaan taman nasional di daerahnya,dapat digunakan sebagai income PAD (Pendapatan Asli Daerah), untuk membanguninfrastruktur daerah dan meningkatkan kesejahteraan masyarakat, khususnya dalam masa Otda.Sejalan dengan misi pemerintah daerah, masyarakat lokal juga melihat ‘taman nasional’ darikeuntungan nilai ekonomi langsung, sehingga sering terjadi praktek aktivitas illegal lggingdan tambang di kawasan taman nasional Tanjung Puting yang pada akhirnya berakibat terhadaprusaknya hutan. Dalam konteks ini, baik kepentingan konflik antara dua aktor stakeholdersyang utama baik pemerintah pusat dan daerah sangat menarik untuk dikaji.Kata kunci: Pengelolaan taman nasional, kolaborasi, stakeholders, kepentingan konflikpemerintah pusat dan daerah.
PENGARUH PENAMBAHAN SULFUR PADA PROSES PENCAIRAN BATUBARA BANKO Hidayat, Herman; Adiarso, Adiarso
Jurnal Energi dan Lingkungan (Enerlink) Vol 2, No 2 (2006)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

The effect of adding sulfur in Central Banko coal liquefaction is examined usingautoclave reactor with limonite catalyst from Soroako, at 450oC, H2 initialpressure = 9 Mpa, holding time = 60 minutes, and S/Fe ratio varies from 1, 2, 3dan 6. It is found that there is significant increase in distillates yield by 53,81% forthe increase of S/Fe ratio from 1 to 2, and at the same time CLB decreases from53,5% to 29,47%. This is because the amount of pyrrhotite for S/Fe ratio =2 ishigh and enough to promote cracking to convert coal to distillates or oil. For S/Feratio = 3, the increase of distillates or oil yield is not significant, so does for S/Fe= 6. This concludes that adding more sulfur in Central Banko coal liquefactionusing limonite catalyst from Soroako is not effective and therefore does notinfluence much to the oil yield. This is because the particle size and amount ofpyrrhotite already achieves equilibrium for S/Fe ratio = 2. The changing of S/Feratio does not give much effect to the yields of H2O, CO+CO2, C1~C4,andhydrogen consumption as well..Kata Kunci : limonit Soroako, rasio S/Fe,yield distilat, yield CLB, pirhotit, yieldH2O, yield CO+CO2, yield C1~C4, konsumsi gas hidrogen
ANALISIS KEUNGGULAN LIMONIT SOROAKO SEBAGAI KATALIS PENCAIRAN BATUBARA (DIRECT LIQUEFACTION) Hidayat, Herman; Silalahi, Lambok Hlarius
Jurnal Energi dan Lingkungan (Enerlink) Vol 3, No 1 (2007)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (172.7 KB)

Abstract

An investigation of catalytic activities of Soroako limonite ore using 1liter autoclavewas carried out. The comparison of the results with other iron catalysts forliquefaction of Banko coal was also performed to find out the best catalyst forBanko coal liquefaction. Much efforts to improve brown coal liquefaction processefficiency has been conducted at BPPT since 1994 through the design of highlyactive catalysts along with design of good hydrogen donor solvents. Someprevious studies have shown that limonite ore has several superior characteristicscompared to pyrite (FeS2) when used as catalyst in coal liquefaction process. Onemain reason is that limonite ore contains both iron and nickel compound asFeOOH, FeNi2OOH, FeCr2OOH that found to be responsible of high distillate.The use of natural ore for catalyst will implies that the production of industrialcatalyst for coal liquefaction could be obtained with low production cost. Theresults suggest that catalytic activity of Soroako limonite could be achieved at lowtemperature around 300 oC or less changing its crystallite form to pyrrhotite (Fe1-xS) species. Such phenomenon is similar to that of highly active Yandi Yellowcatalyst. Moreover, Soroako limonite catalyst also gives higher oil yield withsmaller amount of hydrogen consumption compare to pyrite and Yandi yellowcatalysts. So it concludes that Soroako limonite has high catalytic activity, and itssoft physical nature makes it possible to be pulverized into sub-micron particlesize easily and economically. Soroako limonite, therefore, can be recommendedas one of the most suitable catalysts for commercial coal liquefaction plant to beconstructed in the future.Kata kunci: coal liquefaction, soroako limonite, -FeOOH, pyrrhotite, limonitecatalyst
RISET REAKTIFITAS LIMONIT SOROAKO SEBAGAI KATALIS PADA PENCAIRAN BATUBARA DENGAN GAS FLOW TYPE REACTOR Hidayat, Herman; Silalahi, Lambok Hlarius
Jurnal Energi dan Lingkungan (Enerlink) Vol 2, No 2 (2006)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (525.279 KB)

Abstract

B r o w n Coal Liquefaction (BCL) process had been developed through theconstruction and the operation of 50 T/D pilot plant Ill Australia (1985-1990) byKOBE STEEL Group. After the successful completion of the Pilot Plant Project,newly Improved BCL process has been developed1). The feasibility study onthe commercialization of coal liquefaction plant in Indonesia has also beencarried out under the cooperation with BPPT supported by NEDO Limonitore (α-FeOOH) can be used as an industrial catalyst for direct coal liquefactionwith its high activity and low production cost. In this paper, the catalytic activitiesof Indonesian limonit ore, Soroako Limonit were examined using a gas flow typeautoclave comparing with the other iron catalysts for the liquefaction ofIndonesian brows coal. It appeared that the Soroako limonit has a highcatalystic activity while finely pulverizing to sub-micron particle size can bedone economically. It can be concluded that Soroako limonit is one of mostsuitable catalysts for the coal liquefaction plant constricted in Indonesia in thefut-ure.Kata kunci: direct liquefaction, soroako limonit, iron catalyst, phyrrotite, bankocoal
PEMANFAATAN RESIDU KILANG MINYAK PLAJU SEBAGAI PELARUT PADA PROSES PENCAIRAN BATUBARA (Co-Processing) Rasyid, Muhamad Hanif; Hidayat, Herman
Jurnal Energi dan Lingkungan (Enerlink) Vol 4, No 2 (2008)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

This study presents the investigation on the reactivity of vacuum oil residue(VOR) as solvent in Banko coal liquefaction, so called “Co-processing”. Processsolvent derived from BSU tests is used as reference solvent in this study. Theliquefaction tests are carried out using a gas-flow type autoclave (5L) with 200gcoal (daf), 400g of coal-derived solvent (b.p.300-420 oC), 1.0-3.0 wt% daf as Feof catalyst and elemental sulfur (S/Fe atomic ratio of 2.0) at 14.7MPa, 450oC for60min under a constant gas flow of H2-0.5%H2S. The study suggests that VORas solvent is much more reactive than process solvent under the same condition.Therefore the co-processing gives higher oil yield than coal liquefaction usingprocess solvent derived from BSU tests. It also produces lower CLB, CO+CO2and hydrocarbons yields. This indicates that there is a synergism effect betweenthe VOR as a donor solvent and the coal. The molecular structure of VOR at thefirst time was decomposed into molecular fragments. These fragments were thenattached onto the coal’s structure and lead to decompose the structure of thecoal. It was also found that co-processing consumed less hydrogen gas thanreference liquefaction process. In short, this finding obtained in this study cangive promising sight for implementing the coal liquefaction plant in Indonesia at acommercial scale.Kata kunci: vacuum oil residue, Banko, liquefaction, co-processing reactive,synergism effect
KOMPARASI REAKTIFITAS PELARUT DARI MINYAK BAKAR DAN RESIDU RANTAI PANJANG PADA PENCAIRAN BATUBARA BANKO Hidayat, Herman; Nataadmadja, Nasikin
Jurnal Energi dan Lingkungan (Enerlink) Vol 3, No 2 (2007)
Publisher : Jurnal Energi dan Lingkungan (Enerlink)

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Abstract

The needs of fuel, especially for automotive fuel, in Indonesia keeps onincreasing, while petroleum reserves is getting lessen everyday. One alternativeto achieve the diversified energy strategy for the transportation sector is theutilization of the Indonesian low rank coal reserves through the implementation ofcoal liquefaction technology. Coal liquefaction process that has been done beforewas found economically and technically less effective. Those are the reasons fordoing coal liquefaction research using petroleum residue as the solvent, namelyco-processing, which expected to give a better performance than the standardcoal liquefaction. The feedstocks are lignite coal from Central Banko, petroleumresidue (fuel oil and long residue), limonite catalyst from Soroako and hydrogengas. The reactions were carried out in a stirred batch autoclave reactor at 120Kg/cm2 of initial hydrogen pressure and 450oC for 1 hour, at 2 of S/Fe atomicratio and 2 of solvent/coal weight ratio. The liquid products were fractionated byvacuum distillation and the gaseous products were analyzed by gaschromatography. It showed that co-processing with long residue as the solvent isbetter than fuel oil or standard coal liquefaction, with 39.17 wt% daff of oil yiled.The cetane index of middle oil fraction was 27.8 and the efficiency of hydrogenconsumption was 23.68 (oil yield/hydrogen consumption).Kata kunci: pencairan batubara, co-processing, residu minyak bumi, batubaralignit
THE EFFECT OF LOGGING INDUSTRY ON THE LOCAL PEOPLE’S ECONOMY: A Case Study on Muara Gusik Village, East Kalimantan Hidayat, Herman
Jurnal Masyarakat dan Budaya Vol 7, No 1 (2005)
Publisher : P2KK LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (200.229 KB) | DOI: 10.14203/jmb.v7i1.222

Abstract

Kehadiran HPH (Hak Pengusahaan Hutan) PT.ITCI, di Kenanga, Balikpapan pada masa Orde Baru berdampak negatif atas masyarakat lokal. Implikasi tersebut ialah adanya ‘konflik lahan’ antara pemilik HPH dan masyarakat desa Muara Gusik. Jambuk dan Pringtalik. Akibat konflik ini kehidupan ekonomis dan sosial masyarakat telah terpinggirkan. Tulisan ini memfokuskan untuk mengkaji respon masyarakat untuk bertahan hidup di tengah konflik lahan ialah dengan melakukan bertani padi pada sebagian lahan mereka dan menanam rotan, karet, mencari kayu gaharu dan berdagang kayu bekas sebagai pendapatan sampingan. Key words : Concession holder, local people, and agricultural productions.
IMPACT OF DEFORESTATION ON ENVIRONMENTAL CONDITION Hidayat, Herman
Jurnal Masyarakat dan Budaya Vol 5, No 2 (2003)
Publisher : P2KK LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (130.896 KB) | DOI: 10.14203/jmb.v5i2.250

Abstract

Rezim Orde Baru memulai kebijakan untuk mengeksploitasi hutan pada tahun 1967. Devisa negara yang diperoleh dari hasil hutan baik dari penjualan log kayu, industri plywood dan pulp menduduki nomer dua setelah pendapatan dari sektor minyak. Namun, penebangan log secara besar-besaran di areal konsesi log hutan (HPH) tidak disertai dengan penanaman massal kembali, penegakan hukum bagi mereka yang merusak hutan, dan komitmen yang konsisten mengenai ‘pengelolaan hutan’ yang telah diatur oleh Departemen Kehutanan. Fenomena di atas mendorong percepatan hancurnya hutan (Deforestation and Forest Degradation) di Indonesia. Tulisan ini memfokuskan kajian mengenai kerusakan hutan di Indonesia, dengan melihat komentar forum-forum kajian seperti FAO, WRI dan Myers serta penulis sendiri. Dikemukakan juga dampak hancurnya hutan atas lingkungan seperti kebakaran hutan tahun 1997-1998, rusaknya spesis sumber hayati hutan, polusi air, perubahan cuaca dan panas bumi.
ASSESSMENT OF RIPARIAN VEGETATION PATTERN ALONG ALISTA HILLY RIVER BASIN Parmawati, Rita; Rokani, Lutvita Erya; Yakub, Arham; Riarmanto, Arief Kurnia; Pertiwi, Maya; Hidayat, Herman; Kurnianto, Agung Sih
Journal of Tropical Life Science Vol 8, No 3 (2018)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.08.03.05

Abstract

Riparians are undergoing extensive reductions and changes in their natural composition into agricultural and urban area. The relationship between the vegetation distribution pattern and the riparian topography factor has been assumed to typically represent a biome-specific or vegetation-specific constant. This study aim is to analyze the vegetation distribution pattern with topography along Alista river in Dau District, Malang. We surveyed 3 stations that represent a zone of edge gradient between the river and the mainland: levee, mid-flood, and slough. We used the wetland classification (Obligate - OBL; Facultative Wetland-FACW; Facultative Upland (FACU); and Upland (UPL) for each species found from various sources. we observed that facultative upland plants have a broad dominance. Mid-floodplain and slough dominated by typical upland species. Although Levee widely consisted of by upland plants, this area has one distinctive obligate species: Equisetum. The presence of OBL species in the levee and mid-floodplain indicate the area is receiving more frequent floods than other areas.
Co-Authors Adiarso, Adiarso Adiarso, Adiarso Agung Sih Kurnianto Arifin, Chairul Fariadi, Tri Taruna Harmiko, Toto Nataadmadja, Nasikin Nataadmadja, Nasikin Parmawati, Rita Pertiwi, Maya Rasyid, Muhamad Hanif Rasyid, Muhamad Hanif Riarmanto, Arief Kurnia Rokani, Lutvita Erya Silalahi, Lambok Hlarius Silalahi, Lambok Hlarius Yakub, Arham