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All Journal Bumi Lestari Jurnal Ilmu Lingkungan Aceh International Journal of Science and Technology
Setyo S. Moersidik
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Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science

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POTENSI DAN OPTIMALISASI PRODUKTIVITAS NIRA NIPAH (Nypa fruticans) DARI METODA PENYADAPAN TRADISONAL KE TEKNOLOGI NON KONVENSIONAL Sopyan Hadi; Thamrin Thamrin; Setyo S. Moersidik; Syaiful Bahry
Bumi Lestari Journal of Environment Vol 14 No 2 (2014)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The utilization of non-timber forest products of mangrove palm (Nypa fruticans Wurmb) ofsap produced through the process of tapping,  is still made   by the traditional way with theamount of sap production is still small or limited for consumption purposes. Sap whichcontains sugar has a potency to be fermented  into ethanol which is a source of greenenergy. The problem is the amount of available sap as raw material obtained by traditionaltapping is still limited, therefore, more efforts to increase productivity are needed. Thepurpose of this study was to explore several methods of tapping palm from traditional waytowards  non-conventional technologies. This study used an experimental method examiningseveral factors including 1) Duration of pre-tap (10 days, 20 days, 30 days) 2). Pre-tappingstimulation (without and with stimulation) 3) Type of container (non-vacuum container(traditional), 1.5 L small vacuum container, 2L medium vacuum container  and 20L largevacuum containers). 4) The level of luxuriance palm leaf midrib (not dense 0-2 midrib, lessdense 3-4 midrib and dense > 4 midrib). Observed variables are sap volumes include volumesof palm sap/stem, sugar, tapping duration/stem. The result obtained from tapping processon mangrove forest in Lubuk Muda Village, Siak Kecil District, Bengkalis Regency RiauProvince showed that optimal productivity were obtained on 1). Pre-tapping stimulationat 30 days. 2) Treatment with pre-tapping stimulation. 3) Harvesting on the medium vacuumcontainer and 4) found in dense leaf midrib.
DEGRADASI LINGKUNGAN DI KAWASAN PENYANGGA SUAKA MARGASATWA BUKIT RIMBANG BUKIT BALING PROPINSI RIAU Indra Suandy; Aras Mulyadi; Setyo S. Moersidik; Emirhadi Suganda
Jurnal Ilmu Lingkungan Vol 8, No 2 (2014): Jurnal Ilmu Lingkungan
Publisher : Program Pascasarjana Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jil.8.2.p.214-225

Abstract

The environmental conditions of Wildlife Sanctuary buffer zones Bukit Rimbang BukitBaling (SM BRBB) alleged to have been degraded by a variety of community activities.This research aims to determine the condition and degradation of SM BRBB bufferzone. The survey was conducted in the buffer zone of SM BRBB, especially located inthe district of Kuantan Singingi, Riau Province. The forest area in the buffer zone of SMBRBB is located in hilly areas, composed by primary forest and secondary forest. In2004 the forest buffer zones is amounted to 14539.98 ha, and shrinkage to 82.25% in2008. The major threats of SM BRBB buffer zone comes from illegal logging,Industrial Plantation Forest (IPF), farms and settlements. In the period of 2004-2008,there has been a vast increase of IPF amounted to 195.76% of the initial area amountedto 8198.39 ha, plantation area of 159.74% of the initial area 2300.89 ha, and theaddition of extensive settlement of 222.56% of the initial area of 29.97 ha.
Sorption Analysis of 137Cs On Karawang’s Clay Samples Budi Setiawan; Suci Prihastuti; Setyo S. Moersidik
Aceh International Journal of Science and Technology Vol 5, No 3 (2016): December 2016
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (442.993 KB) | DOI: 10.13170/aijst.5.3.5749

Abstract

The objective of this work is to characterize the specific of distribution coefficient (Kd) values of 137Cs onto Karawang’s clay for radioactive waste disposal facility purpose. Sorption phenomena was affected by contact time, ionic strength and loaded concentration of CsCl.  Experiments were done in a batch method, with initial concentration was 10-8 M CsCl in the experiments of contact time and ionic strength effects. In the CsCl loading experiment, the concentration was varied from 10-8 to 10-4 M CsCl and 137Cs radioactive solution was used as a tracer. The solid-liquid ratio is 10-2 g/mL.  The results shown that obtained Kd values were 21,714 and 4035 mL/g after contacted for 8 days for Sample-1 and 2, respectively. The presence of K+ and Na+ ions in solution had reduced the Kd value Cs-137 where the effect of K+ is greater than Na+ on decreased the value of Kd.  The increasing of CsCl concentrations in solution had reduced the value of Kd.  In both samples of clay were closely fit to Freundlich isotherm and pseudo-second order kinetic model.  The results are very useful as the input of the safety assessment activity of site candidate for radioactive waste disposal facility in the future.
Co-Authors Aras Mulyadi Budi Setiawan Emirhadi Suganda Indra Suandy Sopyan Hadi Suci Prihastuti Syaiful Bahry Thamrin Thamrin