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Lestario Widodo
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Agriculture, Biological Sciences & Forestry Environmental Science

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Profitabilitas Biodiesel dari Biomasa Mikroalga Widodo, Lestario; Ihsan, Iif Miftahul; Santoso, Arif Dwi
Jurnal Teknologi Lingkungan Vol. 19 No. 1 (2018)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.729 KB) | DOI: 10.29122/jtl.v19i1.2551

Abstract

Dalam upaya mengurangi ketergantungan terhadap bahan bakar fosil terutama bahan bakar minyak (BBM), Pemerintah Indonesia menargetkan penggunan bahan bakar nabati (BBN) seperti bioetanol dan biodiesel sebanyak 5% pada tahun 2025. Kendala utama dalam hal pengembangan BBN ini adalahadanya kompetisi bahan baku BBN dengan penyediaan bahan pangan, keterbatasan dalam hal sarana dan prasarana serta kendala non teknis lainnya misalnya berupa fluktuasi harga minyak mentah dunia. Bila kondisi harga minyak mentah dunia naik, maka kondisi ini akan mendorong upayadiversifikasi energi, demikian pula sebaliknya. Pada penelitian ini, dilakukan perhitungan produktifitas BBN biodiesel mikroalga dengan membandingkan harga produksinya dengan harga minyak mentah dunia. Mengacu pada hasil perbandingan biaya produksi mikroalga dengan harga minyak mentah jugadianalisis upaya peningkatan nilai profitabilitas biodiesel mikroalga dengan meningkatkan efisiensi produktivitas melalui pemanfaatan limbah sebagai input produksi dan meningkatkan produk tambahan, serta penambahan inovasi produksi dengan pemanfaatan limbah dan penganekaragaman produk. Hasilperhitungan menyatakan bahwa pada kondisi harga minyak mentah sebesar 70 US$/barel maka biaya produksi bahan baku minyak alga tidak boleh lebih dari Rp. 6.180,-/liter. Penambahan inovasi produksi dengan pemanfaatan limbah dan penganekaragaman produk dapat meningkatkan profitabilitas sebesar 14,2% dan 30,5% atau menurunkan biaya produksi biodiesel dari Rp. 9.025,-/liter menjadi Rp.6.270,/liter.
TANTANGAN PEMBANGUNAN BERKELANJUTAN DI ERA OTONOMI DAERAH Widodo, Lestario
Jurnal Rekayasa Lingkungan Vol 4, No 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (119.285 KB)

Abstract

Regional outonomy that is meant as right, authority and obligatory of the district (kabupaten/kota) to regulateand manage their own governance and community?s interests gave pressure impacts to the environmentalsustainability since its implementation in 2001. The spirit to utilize natural resources from the districtarea tend to explore the environment irresponsibly which resulted in degradation of the environmentalsustainability. The district policies had often not been assessed in detail before implementation especiallytheir impacts to the environment. This caused the regional autonomy went into a different direction,therefore it needs an improvement in the level of program determination, policy and regulation applied, sothat the spirit to conduct decentralised governance will be kept on the rules of sustainable developmentwhich is environmentally friendly.Key words : Sustainable Development, Regional Autonomy
APPLICATION OF CLEANER PRODUCTION OPPORTUNITIES IN TAFU INDUSTRY CENTRE IN KALISARI AND CIKEMBULAN VILLAGE, BANYUMAS DISTRICT, PURWOKERTO Widodo, Lestario
Jurnal Rekayasa Lingkungan Vol 7, No 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (771.082 KB)

Abstract

Cikembulan and Kalisari village, in Banyumas district of Central Java, has grown into TOFU industrial center. The population of tofu industrial is about 600 industry, spread across two villages. Livelihoods of local people are farmers and traders to support the industrial activities of tofu, soy such as providing raw material to provide firewood for cooking, and providing simple tools, etc.. In the process of production, tofu waste industry, one of which liquid waste is usually dumped directly into rivers or drains around the house, so the environment becomes polluted. The purpose of this activity is to provide cleaner production training and technical assistance in the process of cooking. The results showed that with improved stoves and furnaces, the fuel consumption of 42.5% save, or save Rp 31 453,-per period of the process, the length of cooking know that 50% faster. Break Even Point (BEP) The value of the dimension of time is 191 days, and the improvement of environmental conditions.keywords : cleaner production, tofu waste industry
GUMUK PASIR PARANGTRITIS KONVERSI VERSUS KONSERVASI ( SEBUAH TINJAUAN PENGGUNAAN LAHAN DENGAN MODEL DINAMIK) Lestario Widodo
Jurnal Teknologi Lingkungan Vol. 4 No. 1 (2003): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.08 KB) | DOI: 10.29122/jtl.v4i1.268

Abstract

Tulisan ini mencoba mengulas tentang adanya fenomena alam yang sangatlangka dan unik berupa gumuk pasir tipe "barchan", yang terbentuk sebagaiakibat adanya ekosistem Parangtritis yang khas. Pantai Parangtritis khususnya dan pantai selatan Yogyakarta umumnya saat ini telah berkembang sangat cepat di dalam pemanfaatan potensi sumber daya alam di lahan pesisir sehingga banyak pihak berkeinginan untuk memanfaatkan lahan pantai berbagai keperluan, sehingga mengancam keberadaan gumuk pasir. Dengan segala keunikan, karakteristik dan potensi pantai yang khas tersebut, maka potensi terjadinya konflik kepentingan antar sektor akan semakin besar. Gambaran konflik dan akibat yang akan ditimbulkan apabila terus dibiarkan dapat mengancam kelestarian gumuk pasir di Parangtritis tersebut. Dengan model sistem dinamik maka upaya untuk melestarikan keberadaan gumuk pasir dapat dimungkinkan melalui skenario pembangunan berkelanjutan yaitu menyeimbangkan atau mengendalikan laju pengurangan lahan dengan laju penambahan wilayah gumuk.
PENGELOLAAN LINGKUNGAN PADA ERA OTONOMI DAERAH DENGAN PENDEKATAN TEKNOLOGI Lestario Widodo
Jurnal Teknologi Lingkungan Vol. 5 No. 3 (2004): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.582 KB) | DOI: 10.29122/jtl.v5i3.323

Abstract

Experiences shown that a development program with centralistic model yields an unfair condition which cause a gap among provinces and decreasingenvironmental quality. In this autonomic era the spirits from local governments are to use natural resources as much as possible and less concern to conserve the environment. Through an application of technology, which has environmental perception and the application of clean production technology, thus, utilisation of regional natural resources could guarantee the continuity of sustainable development and prosperity of community in their local area.
KECENDERUNGAN REKLAMASI WILAYAH PANTAI DENGAN PENDEKATAN MODEL DINAMIK Lestario Widodo
Jurnal Teknologi Lingkungan Vol. 6 No. 1 (2005): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1438.118 KB) | DOI: 10.29122/jtl.v6i1.333

Abstract

Big cities, especially those with have coastal area, in their development processwill face the problem of limiting area, either for human setlemen or other purposes. One effort to solve the problem is by doing a coastal reclamation which still has problems until now due to the negative impacts resulted. A dynamic model had been developed to exemine the causality of a reclamation phenomenon. Which a simple dynamic model it is known already that investor interest in coastal reclamation is defined by result potential in future, which is reflected by a beneficial land conversion price and relatively small delay period.
TANTANGAN PEMBANGUNAN BERKELANJUTAN DI ERA OTONOMI DAERAH Lestario Widodo
Jurnal Rekayasa Lingkungan Vol. 4 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v4i1.1850

Abstract

Regional outonomy that is meant as right, authority and obligatory of the district (kabupaten/kota) to regulateand manage their own governance and community’s interests gave pressure impacts to the environmentalsustainability since its implementation in 2001. The spirit to utilize natural resources from the districtarea tend to explore the environment irresponsibly which resulted in degradation of the environmentalsustainability. The district policies had often not been assessed in detail before implementation especiallytheir impacts to the environment. This caused the regional autonomy went into a different direction,therefore it needs an improvement in the level of program determination, policy and regulation applied, sothat the spirit to conduct decentralised governance will be kept on the rules of sustainable developmentwhich is environmentally friendly.Key words : Sustainable Development, Regional Autonomy
PERSEPSI MASYARAKAT TERHADAP PEMILAHAN SAMPAH (Studi Masyarakat Jakarta, Tangerang, Bekasi, Depok) Lestario Widodo
Jurnal Rekayasa Lingkungan Vol. 6 No. 1: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v6i1.1921

Abstract

Act No. 18 of 2008 on Waste Management mandate that the community or household is the beginning of the stage of waste management processes, which make waste separation. Up to know solid waste management in urban area is still a complex problem, either from social, management, or technology aspects. The other problem of solid waste management is due to the people behaviour, which is mostly still unaware. Community respondents do not wish to waste segregation and argued that the waste separation should be done by the government. Seen thatthe awareness for change in how to manage the waste is still low. Local governments still need to continue to disseminate the Act No. 18 of 2008 on Waste Management and provide motivation to the community or households that are willing to segregation waste at the source.Keywords : waste, waste separation, community perception of waste
APPLICATION OF CLEANER PRODUCTION OPPORTUNITIES IN TAFU INDUSTRY CENTRE IN KALISARI AND CIKEMBULAN VILLAGE, BANYUMAS DISTRICT, PURWOKERTO Lestario Widodo
Jurnal Rekayasa Lingkungan Vol. 7 No. 2: Jurnal Rekayasa Lingkungan
Publisher : BPPT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jrl.v7i2.1956

Abstract

Cikembulan and Kalisari village, in Banyumas district of Central Java, has grown into TOFU industrial center. The population of tofu industrial is about 600 industry, spread across two villages. Livelihoods of local people are farmers and traders to support the industrial activities of tofu, soy such as providing raw material to provide firewood for cooking, and providing simple tools, etc.. In the process of production, tofu waste industry, one of which liquid waste is usually dumped directly into rivers or drains around the house, so the environment becomes polluted. The purpose of this activity is to provide cleaner production training and technical assistance in the process of cooking. The results showed that with improved stoves and furnaces, the fuel consumption of 42.5% save, or save Rp 31 453,-per period of the process, the length of cooking know that 50% faster. Break Even Point (BEP) The value of the dimension of time is 191 days, and the improvement of environmental conditions.keywords : cleaner production, tofu waste industry
Co-Authors Arif Dwi Santoso Ihsan, Iif Miftahul Joko Prayitno Susanto Reba Anindyajati Pratama, Reba Anindyajati