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Harry Tetra Antono
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Industrial & Manufacturing Engineering Mathematics

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Kemampuan Daya Serap Zeolit Sintetis Dibandingkan dengan Serpentin Teraktifasi Terhadap Gas CO2 M. Lutfi; Harry Tetra Antono; Agus Wahyudi; Retno Damayanti
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 16, No 2 (2016)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v16i2.2290

Abstract

Kebutuhan energi yang semakin meningkat merupakan salah satu penyebab peningkatankonsentrasi CO2 di atmosfir. Penelitian tentang penangkapan CO2 telah banyak dilakukan, beberapamaterial dapat dipakai sebagai adsorben CO2. Kegiatan yang dilakukan meliputi pembuatan bahanpenyerap yang berasal dari beberapa material/mineral, yaitu zeolit sintetik dan aktivasi serpentin;perancangan alat simulasi dan uji coba penyerapan CO2. Kedua material tersebut kemudian diujikansebagai material penyerap/adsorben gas CO2 pada alat simulasi penyerapan CO2. Hasil serapantertinggi gas CO2 menggunakan zeolit sintetik adalah 13.98% (3.92 g/g) dengan jumlah zeolit yangdigunakan sebesar 5 g, sedangkan bila menggunakan serpentin teraktivasi adalah 14.3 % (5.13 g/g)dengan jumlah serpentin yang digunakan sebesar 5 g, keduanya dapat digunakan sebagai bahanpenyerap CO2.
Variabel-Variabel yang Berpengaruh Terhadap Swabakar Batubara Menggunakan Regresi Komponen Utama Harry Tetra Antono; M. Lutfi
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 14, No 1 (2014)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v14i1.1084

Abstract

Batubara Indonesia pada umumnya cenderung bersifat swabakar (terbakar dengan sendirinya).Swabakar batubara didefinisikan sebagai pemanasan perlahan dan oksidasi batubara yang diawalidengan terserapnya oksigen pada suhu rendah. Hal tersebut menjadi isu lingkungan yang sangatpenting sehingga pendeteksian dini potensi sifat swabakar perlu dilakukan. Batubara Indonesiamemiliki beberapa karakteristik yang dapat dikategorikan menjadi tiga jenis yaitu proksimat, ultimat,dan petrografi. Karakteristik batubara tersebut apabila dijabarkan akan mengandung beberapavariabel yang merupakan partikel pembentuk batubara. Variabel-variabel yang cukup banyaktersebut tentunya dapat dianalisis untuk mengetahui karakteristik yang mempengaruhi swabakarbatubara. Salah satu teknik analisis yang digunakan untuk mengetahui pengaruh dari variabelvariabelpengamatan yang cukup banyak adalah dengan menggunakan Principal ComponentRegression atau Regresi Komponen Utama.
Analisis Indeks Vegetasi Menggunakan Citra ALOS AVNIR-2 untuk Mengestimasi Serapan Karbon Harry Tetra Antono
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 13, No 2 (2013)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v13i2.1080

Abstract

Forests has an important role in stabilize CO2 concentrations in the atmosphere as a source ofcarbon emissions and can absorb carbon and store. It is often called a carbon sink program . Todevelop this program, it needs carbon stock data stored in the form of biomass using an effectivetechnique and easy to use. This study aimed to estimate the carbon content in the area ofreclamation and secondary forest resulting from mining activities through biomass allometricequation. Biomass values obtained by non-destructive method of sampling and biomass values wereused to develop allometric equations using regression analysis between the biomass with a diameterof tree. The study case was located at mine concession of PT. Lanna Harrita, at the border of KutaiKertanegara and West Kutai Districts, East Kalimantan Province. The allometric biomass equationsfor the reclamation area: B = 0.1 x 0.41 x D2+0.62, and for secondary forests: B = 0.118 x D2,31.Allometric equations to estimate carbon stored is y = 278.91 (NDVI) from 2 to 133.66 (NDVI) +68.4.This study also analysed the carbon stored using remote sensing. The analytical result from theAlos Palsar images of study area PT Lanna Harrita describes that carbon sink potential is 12,229ton/ha in reclamation area and 56,665 ton/ha in secondary forest. The estimation of carbon uptakein low vegeation area of PT Lanna Harrita is 337.037,72 ton/ha, 899.678,1 ton/ha in vegetation isbeing and 43.364,95 in high vegetation.Those data suggest that the reclamation activity in the studyarea gave a little contribution to the carbon sink program yet.
Estimasi Pendugaan Biomassa Hutan Sekunder dan Daerah Reklamasi Menggunakan Data Citra ALOS PALSAR Harry Tetra Antono
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 13, No 2 (2013)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v13i2.1078

Abstract

Forests has an important role in stabilize CO2 concentrations in the atmosphere as a source ofcarbon emissions and can absorb carbon and store. It is often called a carbon sink program . Todevelop this program, it needs carbon stock data stored in the form of biomass using an effectivetechnique and easy to use. This study aimed to estimate the carbon content in the area ofreclamation and secondary forest resulting from mining activities through biomass allometricequation. Biomass values obtained by non-destructive method of sampling and biomass values wereused to develop allometric equations using regression analysis between the biomass with a diameterof tree. The study case was located at mine concession of PT. Insani Bara Perkasa, at the border ofKutai Kertanegara and West Kutai Districts, East Kalimantan Province. The allometric biomassequations for the reclamation area: B = 0.1 x 0.41 x D2+0.62, and for secondary forests: B = 0.118 xD2,31. This biomass allometric equations can be used to predict carbon reserves stored in thesecondary forest vegetation. This study also analysed the carbon stored using remote sensing. Theanalytical result from the ALOS PALSAR images of study area PT Insani Bara Perkasa describes thatcarbon sink potential is 7,83 ton/ha in reclamation area and 9,19 ton/ha in secondary forest. Theestimation of carbon uptake in reclamation area of PT Insani Bara Perkasa is 8.701,205 ton/ha and247.836,444 ton/ha in secondary forest.Those data suggest that the reclamation activity in the studyarea gave a little contribution to the carbon sink program yet.
Estimasi Stok Karbon di Kawasan Penambangan Akibat Perubahan Luas Penutupan Lahan Terkait dengan REDD M. Lutfi; Harry Tetra Antono
STATISTIKA: Forum Teori dan Aplikasi Statistika Vol 14, No 1 (2014)
Publisher : Program Studi Statistika Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jstat.v14i1.1083

Abstract

Deforestation and forest degradation caused by mining has had very great impact to global climatechange, because one of the functions of forest vegetation is very important is capture and storageCO2 emissions. Revegetation activities in the area of mining is done in order to restore the forestvegetation. Research to estimate absorbtion CO2 as a result of carbon stock by forest vegetationneeds to be done . Remote sensing technology through radar imagery can be applied to estimateforest vegetation carbon stock more quickly and efficient. The research was conducted in the goldmining area of PT . JResources Bolaang Mongondow. Main objective of this research is to estimatechanges in forest covered land due to mining activities, estimation amount of carbon stored in 2008 ,2009, and 2010 and the economic value that can be obtained from stored carbon, using theestimated price based REDD schemes. The methodologies for measurements of the variables used inthe calculation variable of above ground biomass using allometric and ALOS PALSAR image analysisof 2008, 2009, and 2010 to estimate the carbon stock in forests. The results showed there werewidespread changes in forest land cover due to mining activities, and based on image analysis of2008 , 2009, and 2010 , the amount of carbon stock in the research area respectively are32,695,253.57 ton C, ton C 50,146,772.71 and 79,420,248.55 ton C. The economic value of carbonstock in 2010 are Rp.7,538,299,190,029.09 with price estimates and assumptions based on REDDscheme BAU Carbon savings in 2008.
Co-Authors Agus Wahyudi M. Lutfi Retno Damayanti Soejoedono