6 research outputs found

    THE USE OF SPENT BLEACHING EARTH (SBE) AS AN ADSORBENT TO REDUCE FREE FATTY ACIDS IN WASTE COOKING OIL

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    High free fatty acids in waste cooking oil can interfere with the re-use of the cooking oil. Therefore, the absorption technique is one way that can reduce the free fatty acids contained in waste cooking oil. Aim: The purpose of this study is to find out the ability of Reactivated Spent Bleaching Earth (RSBE) to adsorb free fatty acids contained in waste cooking oil to be biodiesel products. In this study, waste cooking oil was collected from fried food sellers in Bekasi, while spent bleaching earth (SBE)-one of the solid wastes produced by refinery oil palm industry as an adsorbent-was from the palm oil industry PT X. For Reactivated Spent Bleaching Earth (RSBE), the redundant used 0.7 M HNO3. To obtain the optimum products, The redundant applied the variation of time (i.e., 30, 45, 60, 75, and 90 minutes) and concentration (6%, 9%, 12%, 15%, and 18%). Methodology and results: Results indicated that the time variation of temperature 90 minutes were the maximum and the concentration of 15% were the optimal combination to reduce free fatty acids 0.65%. Conclusion, significance, and impact of study: The values of water and ash contents of RSBE also meet the quality standard as activated carbon and can be used as an adsorbent for the purification of waste cooking oil. The oil content in SBE is less than 3% and is considered not to be a toxic hazardous waste. Therefore, it can be reused without pre-treatment. In addition, the redundant found that there were changes pore on the surface of the SBE, both activated and not activated. To conclude, SBE can be used as an absorbent to absorb the fatty acids in waste cooking oil

    Framework Model Green-Techno Sociopreneur Ternak Maggot untuk Membangun Kemandirian Ekonomi Panti Sosial DKI Jakarta

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    Panti asuhan sosial di wilayah DKI Jakarta perlu ditingkatkan kemandiriannya sehingga bisa bertransformasi dari cost center menjadi sebuah lembaga yang mandiri secara ekonomi. Hal ini dapat dilakukan dengan mengembangkan sebuah bisnis dengan konsep bisnis yang ramah lingkungan dan mempunyai dampak positif terhadap masyarakat sekitar (community empowerment). Penelitian ini bertujuan untuk mengembangkan sebuah framework implementasi bisnis dengan konsep green techno sociopreneur melalui ternak Maggot. Ini merupakan implementasi konsep waste to value, dimana merubah sampah organik menjadi Maggot yang dapat dimanfaatkan sebagai pakan ternak berprotein tinggi. Hal ini akan mengatasi permasalahan sampah pada panti sosial dan masyarakat sekitar secara signifikan, sehingga akan berdampak terhadap penanggulangan masalah lingkungan secara global. Penelitian ini juga berbasis pemanfaatan teknologi tepat guna dengan melakukan redesign mesin pencacacah sampah dengan sistem knock down. Dari uraian di atas, dapat dikatakan bahwa bisnis ternak Maggot ini mempunyai dampak positif terhadap peningkatan ekonomi, lingkungan, dan sosial. Hasil penelitian ini diharapkan dapat memotivasi semua pihak (akademisi dan praktisi) untuk mengimplementasikan sebuah framework model bisnis green techno sociopreneur yang mengkombinasikan konsep green business model dengan pengembangan teknologi tepat guna

    Pemanfaatan Koagulan Biji Asam Jawa Guna Memperbaiki Parameter BOD, COD, dan TSS Limbah Cair Industri Tahu

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    The purpose of this study was to determine the effectiveness of tamarind seeds in removing pollutant parameters in tofu wastewater produced in the process of making tofu. The parameters to be reduced are BOD, COD, TSS, and turbidity. Variations in coagulant doses used in this study were: 2g/L, 3g/L, 4g/L, and 5g/L. With a coagulation speed of 200 rpm for 3 minutes and a flocculation speed of 120 rpm for 14 minutes with a settling time of 60 minutes. The results showed that tamarind seeds were able to reduce BOD, COD, TSS, and turbidity at a dose of 4 g/L with a pH of 8. The results showed a decrease in turbidity parameters with an initial value of 950 NTU to 151 NTU with an efficiency of 84% removal, TSS parameter with initial value of 662 mg/L becomes 143 mg/L with 78% removal efficiency, COD parameter with initial value of 2987 mg/L becomes 533 mg/L with 82% removal efficiency, and BOD parameter with initial value of 1994 mg/L to 361 mg/L with a removal efficiency of 82%. These results indicate that COD and BOD are still above the quality standards set by the government and further research is needed.Industri tahu menghasilkan limbah yang perlu diproses terlebih dahulu sebelum dibuang ke lingkungan. Terdapat beberapa koagulan organik yang dapat digunakan sebagai penurun parameter pencemar yang terdapat pada limbah tahu, salah satunya yaitu biji asam jawa. Biji asam jawa (Tamarindus indica) dapat dimanfaatkan untuk pengolahan limbah karena bijinya mengandung pati yang bersifat sebagai flokulan alami. Penelitian ini bertujuan menguji keefektivitasan biji asam jawa sebagai koagulan organik dalam mengolah air limbah tahu. Penelitian dilakukan dari bulan Agustus 2021 sampai Maret 2022 dengan pengambilan sampel air limbah tahu di Kalideres, Jakarta Selatan. Parameter yang akan dikurangi yaitu kekeruhan, TSS, COD, dan BOD. Hasil penelitian menunjukan bahwa biji asam jawa mampu mengurangi kekeruhan, TSS, COD, dan BOD di dosis 4 g/L dan pH 8 dengan parameter pencemar yang berhasil diturunkan yaitu kadar BOD diturunkan sebesar sebesar 82%, kadar COD diturunkan sebesar 82%, kadar TSS diturunkan sebesar 78%, dan kekeruhan diturunkan sebesar 84%

    Pemberdayaan Masyarakat Melalui Sistem Pertanian Terpadu di Desa Cibodas Kecamatan Pasirjambu, Kabupaten Bandung

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    Integrated farming System (IFS) is a system that combines agricultural activities, farms, and other sciences related to agriculture in one land, so it is expected to be one of the solutions to increase land productivity, and environmental conservation. In implementing the field of IFS implementation to the community, especially farmers and ranchers require guidance and mentoring, so as to perform the IFS run continuously. Empowering the community through Village partnership Development Program (PPDM) aims to improve community empowerment in corn farming, dairy cattle, and make use of waste in Injeman Sub-village, Cibodas Village, Pasirjambu Subistrict, Bandung District. The methods of implementation include counseling, training, focus group discussion, mentoring, as well as the development of land examples IFS. By implementing IFS, then the environment of cow cage becomes cleaner, increased livestock feed from fermented corn waste (silage), the production of organic fertilizer, the existence of renewable energy from cow dung (biogas), and the emergence of Employment from the organic fertilizer business. But in the implementation of the empowerment activities are experienced several obstacles, such as farmers who are not accustomed to use organic fertilizer and ranches who are not accustomed to use silage as livestock feed. Thus it is necessary to mentoring and suppervision both farmers and ranches on the implementation at the following year. &nbsp

    Upaya Meningkatkan Partisipasi Masyarakat dalam Pengelolaan Sampah Berbasis 3R di Desa Cibodas Kecamatan Pasirjambu Kabupaten Bandung

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    Hingga saat ini upaya pengelolaan sampah di beberapa daerah di Indonesia belum menunjukkan hasil yang optimal, termasuk salah satunya adalah upaya pengelolaan sampah yang ada di Desa Cibodas, Kecamatan Pasirjambu, Kabupaten Bandung. Sampah masih dianggap barang yang tidak memiliki nilai ekonomi dan belum menerapkan prinsip 3R, seperti pengurangan, penggunaan kembali serta melakukan daur ulang, sehingga berpotensi menimbulkan pencemaran lingkungan. Untuk membangun sistem pengelolaan sampah berbasis masyarakat yang ramah lingkungan di Desa Cibodas, upaya yang dijalankan meliputi: membentuk kelompok penggerak, membangkitkan minat dan kesadaran masyakarat, memetakan potensi, meningkatkan pengetahuan dan pemahaman masyarakat, serta merencanakan Tempat Pengolahan Sampah (TPS)-3R sebagai unit percontohan. Atas inisiatif masyarakat desa, kelompok penggerak dipilih kelompok karang taruna desa. Kelompok karang taruna ini selain melakukan pengawasan pelaksanaan pemilahan sampah di tingkat warga, juga dilibatkan dalam menentukan jenis teknologi pengolahan sampah yang akan diterapkan di TPS-3RHingga saat ini upaya pengelolaan sampah di beberapa daerah di Indonesia belum menunjukkan hasil yang optimal, termasuk salah satunya adalah upaya pengelolaan sampah yang ada di Desa Cibodas, Kecamatan Pasirjambu, Kabupaten Bandung. Sampah masih dianggap barang yang tidak memiliki nilai ekonomi dan belum menerapkan prinsip 3R, seperti pengurangan, penggunaan kembali serta melakukan daur ulang, sehingga berpotensi menimbulkan pencemaran lingkungan. Untuk membangun sistem pengelolaan sampah berbasis masyarakat yang ramah lingkungan di Desa Cibodas, upaya yang dijalankan meliputi: membentuk kelompok penggerak, membangkitkan minat dan kesadaran masyakarat, memetakan potensi, meningkatkan pengetahuan dan pemahaman masyarakat, serta merencanakan Tempat Pengolahan Sampah (TPS)-3R sebagai unit percontohan. Atas inisiatif masyarakat desa, kelompok penggerak dipilih kelompok karang taruna desa. Kelompok karang taruna ini selain melakukan pengawasan pelaksanaan pemilahan sampah di tingkat warga, juga dilibatkan dalam menentukan jenis teknologi pengolahan sampah yang akan diterapkan di TPS-3

    Tinjauan Sosioekonomi Pemanfaatan Feses Sapi dengan Teknologi Vermicomposting

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    The Cibodas village is located in Pasir Jambu subdistrict at Bandung Regency, majority community livelihood edged is dairy cattle and agriculture. The problem of waste management in terms of cattle manure that could potentially produce methane (CH4) as one of the greenhouse gases (GRK), and when the cattle manure dumped into the River then it can pollute the rivers directly. The purpose of this study is to see how big the benefits of social and economic aspects of the utilization of cattle manure at the farmer scale. A series of Research include : 1) collect opinions and responses to ranchers, livestock farmers and administrators, by filling the questionnaire against the management of the cattle manure, 2) Observations of operational at the process of vermicomposting in two locations, namely in kampong Papak Manggu and kampong Injeman Cibodas village, during the activities of Demontration plot. The observed data covering 1) production process of vermicomposting (worm production and the weight of the raw materials, daily activities, results of casting, mass balance and quality of organic fertilizer) 2) Required total working hour of process of vermicomposting 3) Space and facilities requirement 4) cost and price analysis. The research show that vermicompost is suitable to be implemented in processing cattle manure, base on the following reason : a) cleaning of the environment b) minimum labor requirement c) providing additional income d) availability of organic fertilizer
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