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Pengelolaan Sampah Rumahtangga Berbasis Komunitas: Teladan dari Dua Komunitas di Sleman dan Jakarta Selatan Dwi Utami, Beta; Siswi Indrasti, Nastiti; Hadi Dharmawan, Arya
SODALITY: Jurnal Sosiologi Pedesaan Vol 2, No 1 (2008)
Publisher : SODALITY: Jurnal Sosiologi Pedesaan

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Abstract

Studi kasus pengelolaan sampah rumahtangga di Wedomartani (Sleman, Yogyakarta, Daerah Istimewa) dan Banjarsari (Jakarta Selatan) memberikan perspektif alternatif untuk meminimalisasi timbunan sampah yang dikelola oleh pemerintah melalui skenario daur ulang sampah dengan mengkombinasikan aspek teknis, ekologi, ekonomi, sosial budaya, kebijakan dan kelembagaan. Tujuan dari kajian ini adalah untuk mengetahui efektivitas dan efisiensi pengelolaan sampah rumahtangga dari sumbernya di Wedomartani dan Banjarsari; 2) untuk membuat sintesis pola pengelolaan sampah berbasis komunitas; 3) untuk menguji dan mengevaluasi efektivitas dan efisiensi pola dari kedua studi kasus tersebut. Penelitian ini dilakukan dari bulan Juni 2005 sampai Agustus 2006. Pengumpulan data dilakukan melalui wawancara, observasi, dan pengambilan sampel. Analisis data dilakukan secara deskriptif meliputi analisis efektivitas biaya, analisis regresi, analisis varian dan t-test. Pengelolaan sampah berbasis masyarakat memberikan beberapa keuntungan yakni : 1) mengurangi 57 persen sampah 70 persen dari total jumlah sampah; 2) efisiensi biaya sebesar 23 persen sampai 37 persen dibandingkan pengelolaan secara konvensional; 3) peningkatan nilai ekonomi dengan penjualan barang daur ulang, pelayanan pelatihan daur ulang dan bentuk-bentuk diversifikasi yang lain; 4) menciptakan harmoni sosial antar banyak pihak. Implementasi kedua pola ini di Bogor belum dapat dilakukan secara optimal karena belum terpenuhinya prasyarat untuk mencapainya. Tingkat biaya operasional juga belum dapat dicapai secara menguntungkan.
PENYISIHAN LOGAM BERAT DARI LIMBAH CAIR LABORATORIUM DENGAN METODE PRESIPITASI DAN ADSORPSI Suprihatin .; Nastiti Siswi Indrasti
Makara Journal of Science Vol 14, No 1 (2010): April
Publisher : Directorate of Research and Community Engagement, Universitas Indonesia

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Removal of Heavy Metals from Liquid Laboratory Waste Using Precipitation and Adsorption Methods. Liquid laboratory waste (such as residue of chemical oxygen demand/COD analysis) contains high concentration of heavy metals (mercury/Hg, silver/Ag and chrome/Cr) and has a high potential to pollute the environment. The liquid waste generated by laboratories is generally in small quantity, but it is extremely toxic. It is urgently in need to find out an appropriate method to reduce the problems according to the liquid waste characteristics. In this research work, precipitation and adsorption methods were evaluated to remove Hg, Ag, and Cr from liquid laboratory waste, covering determination of optimum process conditions, levels of removal and achievable treated waste quality. Results showed that a Cr removal of 97% was obtained by pH 10, and Hg and Ag removals of 97-99% were reached by pH 12. Although heavy metals removals using precipitation was very significant, but the concentration of heavy metals in the treated waste was still high (0.73-2.62 mg/L) and need for further treatment. Applying activated carbon adsorption for further treatment of the effluent reduced dissolved heavy metals to 0-0.05 mg/L, depending on the type of heavy metals as well as the type and dosing of activated carbon. Keywords: activated carbon adsorption, heavy metals removal, liquid laboratory waste, precipitation
An overview of technologies suitable for handling Indonesian agricultural soils contaminated with persistent organic pollutants Dwindrata Basuki Aviantara; Mohamad Yani; Nastiti Siswi Indrasti; Gunawan Hadiko
Journal of Degraded and Mining Lands Management Vol 9, No 2 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.092.3415

Abstract

Since Indonesia have signed and ratified Stockholm Convention on Persistent Organic Pollutants (POPs) in 2009, the country must make efforts to manage POPs appropriately. A number of pollution evident of POPs has occurred in Indonesia, either air, soil or water. Agricultural soils are not excluded from POPs pollution as the result of halogenated pesticide uses or other unidentified sources. Contamination of POPs to humans have been detected, as well as indicated potential exposure of POPs to humans. Based-catalyzed decomposition is a method that can be used to decompose or decontaminate POPs. Limestone can be processed to produce calcium-based catalyst that can apply for POPs decomposition. Indonesia is a country rich in limestone natural resources to produce calcium. However, calcium is inferior to sodium or potassium in reactivity for the dehalogenation of POPs. Thus, more evaluation is needed in order for synthesizing proper and economical calcium-based catalyst to alleviate POPs pollution in Indonesia.
PENGEMBANGAN MEDIA TUMBUH ANGGREK DENGAN MENGGUNAKAN KOMPOS Nastiti Siswi Indrasti, dan Rio Reyno Elia
Jurnal Teknologi Industri Pertanian Vol. 14 No. 2 (2004): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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ABSTRACTCompost can be utilized as organic fertilizer and orchid’s growth media as well. In general, the objective of this research was to develop orchid's growth media from compost. The specific objectives of this research was : 1) to conduct the composting process using windrow techniques from buffalo manure, rice straw, coffee hull and leaf. 2) to investigate the effect of the compost and clay mixture, heating time and temperature to the physical and nutrient quality of the orchid’ growth media.The orchid's growth media consist of compost, clay and water  as raw material. The dimension of the orchid’s media was 10 x 10 x 4 Cm3. The orchid's growth media was made through manual's forming process and heating in oven. The used experimental design was completely randomized block factor design with two times replication. The ratio of compost to clay was 2:3; 2:2 and 3:2; the heating time factor was 2, 3 and 4 hours, and the heating temperature factor was 70, 80 and 90 oC. The best combination treatment was achieved by a mixture of compost and clay with the ratio of 2:2, heating time of 2 hours at 70 oC . The best combination treatment showed the value of pressure of 16,95 Kgf/Cm2; weight of 504,45 g; N-Total 0,68 %; P2O5 0,26 % and K2O 1,74 %.Key words :  Compost, Windrow Techniques, Orchid’s Growth  Media, Clay
Exploration of Barriers in Achieving Proactive Environmental Strategies in a Natural Rubber Industry : A Case Study Syarifa Arum Kusumastuti; Suprihatin Suprihatin; Nastiti Siswi Indrasti
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 6 No. 2 (2015)
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2015.v6.no2.p51-58

Abstract

As the evolving of environmental issues over time, the development of environmental management approaches in industries began to shift to the prevention of pollution to reduce environmental impact. However, in practice, many obstacles encountered during the environmental management change to be more proactive. This study aims to explore the barriers of achieving the proactive environmental strategy in a rubber processing industry. Used a case study approach in a natural rubber processing factory, the data was collected through interviews with experts and sources as well as observation in the field. This study shows main barriers that faced by the company consist of financial issue, human resources, communities’ pressure, technological change and communication with environmental experts. The results of this study suggest conducting cooperation with research institutions or environmental experts especially for skills that cannot be controlled by the manager or employees in the company.
Perolehan Kembali Seng Dari Limbah Industri Galvanis Sebagai Seng Asetat Agustina, Siti; Indrasti, Nastiti Siswi; Suprihatin, Suprihatin; Rochman, Nurul Taufiqu
Jurnal Kimia dan Kemasan Vol. 36 No. 1 April 2014
Publisher : Balai Besar Kimia dan Kemasan

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Seng dross merupakan hasil samping dari industri pelapisan logam (galvanis) dengan proses hot-dip dan mempunyai kandungan seng yang cukup tinggi. Hasil samping ini dapat digunakan sebagai bahan baku seng asetat. Seng asetat digunakan sebagai bahan tambahan makanan, suplemen, obat-obatan, precursor, dan pelega tenggorokan. Penelitian ini bertujuan untuk memperoleh kembali seng dari seng dross untuk menghasilkan seng asetat. Seng asetat tersebut akan digunakan sebagai precursor. Proses ekstraksi seng dross dilakukan dengan asam asetat glasial pada kondisi proses, yaitu waktu ekstraksi 1 jam, 2 jam, dan 3 jam, suhu ekstraksi 130 oC, 150 oC, dan 170 oC, serta konsentrasi asam asetat glasial 20%, 40%, dan 60%. Hasil ekstraksi berupa seng asetat dianalisis untuk mengetahui kadar seng dan karakteristik kristal. Hasil penelitian menunjukkan bahwa kondisi proses ekstraksi yang terbaik diperoleh pada suhu 130 oC, konsentrasi asam asetat glasial sebesar 60%, dan waktu proses ekstraksi selama 1 jam. Seng asetat yang diperoleh mengandung 75,39% seng dan kristal seng asetat mempunyai intensitas 5800 counts. 
KARAKTERISASI KONDISI OPERASI DAN OPTIMASI PROSES PENGOLAHAN AIR LIMBAH INDUSTRI PANGAN Lintang Zulqaida Fitrahani, Nastiti Siswi Indrasti dan Suprihatin (E-Jurnal Agro-Industri Indonesia)
E-jurnal Agro-Industri Indonesia Vol. 1 No. 2 (2012): E-Jurnal Agroindustri Indonesia
Publisher : E-jurnal Agro-Industri Indonesia

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ABSTRACT   Increased production in companies will result in the increase the load of the existing wastewater treatment plant. To anticipate the future increase in the COD load, it is in need to characterize dan optimizize the existing wastewater treatment plant. Objectives of this research were characterization of operating conditions, measurement of performance as well as optimization of a food wastewater treatment plant to increase the effluent quality and minimize cost of operating cost.This study was conducted in a food industry in Jakarta. Characterization of the physical installations performed against all operation units that include the unit process physical, biological, and chemical processes. Performance evaluation was carried out using secondary and primary data covering NH4+, phosphate, nitrate, TSS, turbidity, temperature, pH, COD, MLSS, and DO. It was indentified that the biological stage was need to be optimizd especially in the nutrient addition. Almost all units there are differences between condition actual and design that lead to lower efficiencies. It was identified that the optimum nutrition added on Monday was 7 kg/day of urea, 26 kg/day of phosphate as well as 8 kg/day of nutrition liquid. The optimum nutrition added on Thursday was 32 kg/day urea, 45 kg/day phosphate and 8 kg/day nutrition liquid. By implementen these recommendations it can be expected a cost saving by 50%.   Keywords: food industry, nutrient addition, operating conditions, performance optimization
THE COMBINATION OF CHITOSAN-NUTMEG EXTRACT FOR THE NATURAL ANTIBACTERIA AND PRESERVATIVE AGENTS OF RED SNAPPER (Lutjanus sp.) FILLET Nastiti Siswi Indrasti, Suprihatin dan Wahyu Kamal Setiawan TIP
Jurnal Teknologi Industri Pertanian Vol. 22 No. 2 (2012): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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ABSTRACT   Chitosan is produced by deacetylation of chitins which are found in the outer shell of crustacea such as shrimps and crabs. The ability of chitosan as an agent of antibacte ria depends on the degree of deacetylation. This experimental work aimed to study the possibility of chitosan as natural antibacteria of red snapper fillet. The experiments were carried out   in three steps. The first step was the production of chitosan from shrimp shells. The produced chitosan was analyzed by FTIR (Fourier Transform Infra Red) and proximate analysis. The second step was investigation of antibacterial  activity of chitosan and its combination with nutmeg extract. The concentrations of chitosan were  varied 1%; 1.5%; and 2% (w/v) while nutmeg extract were  0%, 5% and 10%. The final step was application of the best combination for red snapper fillet preservation by the dipping method. The chitosan produced in this research meet the commercial standard: particle size, colour of extract, water content (7.89%), ash content (0.79%), and degree of deacetylation (73.86%). Combination of chitosan 1.5% and nutmeg extract 10% showed synergic inhibition againts Escherichia coli with an inhibition diameter of 34.60 ± 0.57 mm. Combination of 1.5% chitosan and 10% nutmeg extract inhibited  the growth rate of bacteria on red snapper fillet (Sig
Pengelolaan Sampah Rumahtangga Berbasis Komunitas: Teladan dari Dua Komunitas di Sleman dan Jakarta Selatan Beta Dwi Utami; Nastiti Siswi Indrasti; Arya Hadi Dharmawan
Sodality: Jurnal Sosiologi Pedesaan Vol. 2 No. 1 (2008)
Publisher : Departement of Communication and Community Development Sciences, Faculty of Human Ecology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (219.092 KB) | DOI: 10.22500/sodality.v2i1.5893

Abstract

Studi kasus pengelolaan sampah rumahtangga di Wedomartani (Sleman, Yogyakarta, Daerah Istimewa) dan Banjarsari (Jakarta Selatan) memberikan perspektif alternatif untuk meminimalisasi timbunan sampah yang dikelola oleh pemerintah melalui skenario daur ulang sampah dengan mengkombinasikan aspek teknis, ekologi, ekonomi, sosial budaya, kebijakan dan kelembagaan. Tujuan dari kajian ini adalah untuk mengetahui efektivitas dan efisiensi pengelolaan sampah rumahtangga dari sumbernya di Wedomartani dan Banjarsari; 2) untuk membuat sintesis pola pengelolaan sampah berbasis komunitas; 3) untuk menguji dan mengevaluasi efektivitas dan efisiensi pola dari kedua studi kasus tersebut. Penelitian ini dilakukan dari bulan Juni 2005 sampai Agustus 2006. Pengumpulan data dilakukan melalui wawancara, observasi, dan pengambilan sampel. Analisis data dilakukan secara deskriptif meliputi analisis efektivitas biaya, analisis regresi, analisis varian dan t-test. Pengelolaan sampah berbasis masyarakat memberikan beberapa keuntungan yakni : 1) mengurangi 57 persen sampah 70 persen dari total jumlah sampah; 2) efisiensi biaya sebesar 23 persen sampai 37 persen dibandingkan pengelolaan secara konvensional; 3) peningkatan nilai ekonomi dengan penjualan barang daur ulang, pelayanan pelatihan daur ulang dan bentuk-bentuk diversifikasi yang lain; 4) menciptakan harmoni sosial antar banyak pihak. Implementasi kedua pola ini di Bogor belum dapat dilakukan secara optimal karena belum terpenuhinya prasyarat untuk mencapainya. Tingkat biaya operasional juga belum dapat dicapai secara menguntungkan.
ADVANCED TREATMENT OF FOOD INDUSTRY WASTEWATER BY ELECTROCOAGULATION USING STAINLESS STEEL ELECTRODES Mutiara Windika Gameissa, Suprihatin dan Nastiti Siswi indrasti
E-jurnal Agro-Industri Indonesia Vol. 1 No. 1 (2012): E-Jurnal Agroindusri Indonesia
Publisher : E-jurnal Agro-Industri Indonesia

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Abstract

ABSTRACT   Food industry wastewater contains large amount of organic contaminants that cause water pollution. Approprite techniques for wastewater treatment can reduce the content of pollutants in the wastewater. Electrocoagulation is an alternative for treatment of the wastewater. This technique is pricipally a coagulation process that uses direct current through electrolysis. One of the advantages of this process is no need chemicals adding as coagulant. Electrocoagulation process has been carried out with a batch system on a scale of 1 Liter of wastewater using stainless steel electrodes with effective area of 108.9 cm2. Electrocoagulation has been performed on voltage variation of 9 to 24 Volt and operating time of 30 to 60 minutes. Samples were taken at each variable and analyzed for following parameters pH, TSS, turbidity, color, COD and phosphate concentration. The results showed that the greater voltage and operating time of electrolysis, the greater removal of contaminants in wastewater. Electrocoagulation optimal condition occurs at a voltage of 24 Volt and 60-minute operating time with efficiency TSS removal of 88.02%, turbidity removal of 76.85%, color removal of 77.49%, phospate removal of 100% and COD removal of 77.78%. Keywords: advanced wastewater treatment, electrocoagulation, food industry wastewater