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Production Of Sodium Lignosulphonate From Isolated Lignin Of Empty Fruit Bunch : Indentification And Performance Test As A Dispersant Agent

Jurnal Teknologi Industri Pertanian Vol 19, No 1 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Jurnal Teknologi Industri Pertanian

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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

Manajemen Strategi Pengembangan Pertanian Kota (Urban Agriculture) di Kota Tangerang Selatan

Jurnal Aplikasi Manajemen Vol 12, No 3 (2014)
Publisher : Fakultas Ekonomi dan Bisnis Universitas Brawijaya

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Abstract

Abstract: The Development of the agricultural sector in the South Tangerang City faces severe challenges related to the lack of resources, especially land. Urban agriculture has an important role in addressing various problems in which faced by the city. This research aimed to formulate alternative strategies of urban agricultural development in South Tangerang City. The vision and mission are formulated based on content analysis of stakeholder expectations and industry foresight, while the strategy formulation using IE matrix and use the balanced scorecard framework. Expected condition of urban agriculture development is the increased revenue of the city welfare (economic perspective). South Tangerang city government positions in developing urban agriculture located on the cell V. The best strategy is to continue to run a variety of programs and activities that have been imple mented. Strategies that can be implemented by the government are the increased intensityof the program and activities as well as creating new types of services. Keywords: South Tangerang City, sector public, strategic planning, urban agriculture, IE matrix, balanced scorecard

Pengelolaan Waktu Endap dan Tingkat Kepadatan Lapangan Penumpukan Peti Kemas di PT Jakarta International Container Terminal

Jurnal Manajemen Teknologi Vol 15, No 1 (2016)
Publisher : SBM ITB

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Abstract

Abstrak. Waktu menunggu rata-rata petikemas untuk pemeriksaan dan pengurusan dokumen-dokumen yang dibutuhkan di lapangan penumpukan terminal terutama untuk barang import yang juga disebut dwell time (DT) di Jakarta Indonesia akhir-akhir ini menjadi isu nasional. Hal ini disebabkan masih tingginya waktu endap yang secara rata-rata masih berkisar 6 hari atau lebih, berakibat meningkatnya biaya pengiriman barang dan juga akan mempengaruhi tingkat kepadatan lapangan penumpukan petikemas/Yard Occupancy Ratio (YOR) dan menimbulkan kongesti sehingga kinerja operasional pelabuhan akan menurun. Tujuan penelitian ini adalah untuk : 1. menjelaskan kondisi eksisting hubungan DT dan YOR di PT. Jakarta International Container Terminal sebagai terminal petikemas terbesar di Indonesia dengan menggunakan data sekunder dari tahun 2011 sampai dengan tahun 2015; 2. menyusun prakiraan perkembangan kinerja DT dan YOR yang akan datang dengan menggunakan analisis forecasting data time series dengan error paling kecil dan 3. memperoleh alternatif strategi dan solusi untuk mengatasi DT dengan teknik Analytical Hierarchy Process (AHP) yang menggunakan pendapat 7 pakar (expert) yang mewakili para pemangku kepentingan. Hasil korelasi antara DT dan YOR menunjukkan bahwa terdapat hubungan positif yang signifikan, sedangkan prakiraan menunjukkan bahwa dwell time cenderung turun dan YOR juga akan cenderung turun. Hasil analisis AHP menunjukkan bahwa strategi yang menjadi prioritas utama adalah perancangan model early warning system (EWS)/sistem peringatan dini lingkup antar lembaga yang dimaksudkan untuk mengantisipasi apabila terjadi lonjakan YOR para pihak dapat melakukan secara bersama-sama dengan cepat dan terkoordinasi dan alternatif solusi mengatasi DT dikarenakan aktifitas di terminal petikemas didominasi variabel waktu dalam pengurusan dokumen maka dapat dilakukan dengan memperbanyak barang yang lewat tanpa pemerikasaan dilihat dari rekam jejak para pemiliknya yaitu dapat dipercaya.Kata Kunci: waktu endap, tingkat kepadatan lapangan penumpukan, prakiraan, AHP, sistem peringatan diniAbstract. The average waiting time of containers for inspecting and handling documents required in the container yards of terminals, especially for imported goods, known as DT (dwell time), in Jakarta, Indonesia, lately becomes a national issue. This is due to the high settling time, which on average is still around 6 days or more, resulting in increased shipping cost and affecting the density of container yards/YOR (Yard Occupancy Ratio) and causing congestions that decrease the port operational performance. The purposes of this study were to: 1. Explain the existing condition of the relation between DT and YOR in PT. Jakarta International Container Terminal which is the largest container terminal in Indonesia, by using secondary data from 2011 to 2015; 2. Predict the growth of the future performances of DT and YOR using time series with the smallest error and to obtain alternative strategies and solutions to handle DT using AHP (Analytical Hierarchy Process) which uses opinions of 7 experts who represent stakeholders. The correlation between DT and YOR showed that there was a significant positive relation, while estimation indicated that the dwell time tended to decline and so did YOR. The results of AHP analysis showed that the prioritized strategy was designing EWS (Early Warning System) model between agencies to anticipate surge of YOR so that the parties could work together rapidly and in a coordinated manner. Alternative solutions to solve DT because activities in the container terminal are dominated by the time variable in terms of documents handling was multiplying goods which passed through without examination based on track records of trustworthy owners.Keywords: dwell time, yard occupancy ratio, predict, analytical hierarchy process, early warning system