Hasil Pencarian  ::  Simpan CSV :: Kembali

"Lumpur merupakan produk sampingan utama yang dihasilkan dari proses pengolahan air limbah. Di Indonesia, seringkali lumpur yang dihasilkan belum terolah secara maksimal dan hanya berakhir di TPA. Penelitian ini bertujuan untuk mengolah lumpur aktif IPAL domestik (WAS) guna mengetahui potensi energi dari biogas yang dihasilkan melalui proses anaerobic digestion. Anaerobic digestion (AD) merupakan teknologi pengolahan lumpur yang terbukti efektif untuk pemulihan sumberdaya dan konversi limbah menjadi energi. Eksperimen ini dilakukan menggunakan substrat lumpur IPAL Setiabudi dan inokulum digestat sampah makanan dengan rasio 1:1 (berdasarkan VS). Reaktor yang digunakan merupakan reaktor batch sederhana dan proses berlangsung selama lebih dari 20 hari. Pengujian karakterisasi dilakukan sebelum dan sesudah proses AD untuk parameter pH, COD, TS dan VS, rasio C/N, serta biogas (CH4 dan CO2). Dalam penelitian ini, biogas yang dihasilkan sebanyak 31 ± 2,43 mL CH4/gVS, dengan komposisi biogas yang diukur menggunakan gas chromatography menunjukkan konsentrasi metana sebesar 69,06 ± 1,4%. Sementara itu, nilai energi yang dihasilkan oleh lumpur IPAL tergolong rendah bila dibandingkan dengan gas alam, yaitu sebesar ±0,00224 kWh per m3. Meskipun demikian, hasil ini masih layak untuk diimplementasikan serta diperlukan penelitian lebih lanjut menggunakan rasio S:I yang variatif, penggunaan ko-substrat hingga pre-treatment untuk meningkatkan potensi energi yang dimiliki oleh WAS.

---

Sludge is a major byproduct generated from the wastewater treatment process. In Indonesia, the sludge produced often remains inadequately treated and ends up in landfills. This study aims to treat domestic wastewater treatment plant (WWTP) activated sludge (WAS) to determine the energy potential of the biogas produced through the anaerobic digestion process. Anaerobic digestion (AD) is a proven sludge treatment technology for resource recovery and waste-to-energy conversion. This experiment was conducted using sludge from Setiabudi WWTP and food waste digestate inoculum of ratio 1:1 (VS-based). The reactor used was a simple batch reactor and the process was carried out for over 20 days. Characterization tests were performed before and after the AD process for parameters such as pH, COD, TS and VS, C/N ratio, and biogas (CH4 and CO2). In this study, the biogas produced amounted to 31 ± 2.43 mL CH4/gVS, with the biogas composition measured using gas chromatography showing a methane concentration of 69.06 ± 1.4%. Meanwhile, the energy value generated by the WAS was relatively low compared to natural gas, at ±0.00224 kWh per m3. Despite that, these results are still feasible for implementation and further research is needed using varied S:I ratios, co-substrate and pretreatment methods to enhance the energy potential of WAS."

"Fat, oil, and grease telah menjadi permasalahan baru terhadap kesehatan lingkungan. Fatbergs, yang dikenal juga sebagai fat, oil, and grease deposits dapat menyebabkan dampak merugikan bila pengelolaan fatberg tidak diterapkan. Co-digestion fatberg melalui anaerobic digestion (AD) sangat bermanfaat untuk memitigasi dampak negatif yang dihasilkan oleh fatberg. Pre-treatment fatberg secara fisik seringkali dipelajari dan dikembangkan untuk meningkatkan produksi biogas pada anaerobic digestion. Untuk mengoptimalkan co-digestion AD, kinerja reaktor AD dianalisa. Studi ini dilakukan dengan menganalisa parameter kunci dari AD. Tiga metode pre-treatment dilakukan kepada fatberg melalui pencacahan mekanis (M) hingga memiliki ukuran dibawah <2mm, pre-treatment secara termal (T) dengan memanaskan pada 90°C selama satu jam, dan dilengkapi dengan kombinasi kedua metode (MT). Hasil yang diperoleh menunjukan bahwa pH melewati batas optimum (melebihi 8.0) mengindikasikan inhibisi oleh ammonia, degradasi COD dan VS meningkat hingga 22.66% dan 23.44% secara berturut-urut, rasio C/N sudah ideal sekitar 25 – 30, konsentrasi VFA juga meningkat sebanyak 48.4%, disertakan peningkatan produksi biogas dan persentasi metana sebanyak 25.52% dan 36.35 berturut-urut. Dari seluruh metode pre-treatment yang dilakukan, kombinasi mekanis dan termal merupakan metode paling baik untuk co-digestion fatberg untuk AD.

---

Fat, oil, and grease, has become a recent concern in environmental issues. Fatbergs, also known as fat, oil, and grease deposits will cause detrimental effects internationally if proactive measures are not implemented. Co-digestion of fatbergs for anaerobic digestion (AD) is highly beneficial in reducing the detrimental effects of FOG. Phyiscal pre-treatment of fatberg has been studied and developed to enhance biogas production for anaerobic digestion. In order to optimize co-digestion of AD, the optimal reactor performance is analyzed. This study is conducted by analyzing the key parameters of AD. Three pre-treatment methods were applied to fatbergs being mechanical treatment (M) by shredding the fatbergs <2mm in size, thermal treatment (T) by heating at 90°C for 1 hour, and a combination of both methods (MT). Results show that pH went beyond the optimum range (above 8.0) indicating ammonia inhibition, COD and VS degradation show an increase up to 22.66% and 23.44% respectively, the C/N ratio was ideal ranging from 25 – 30, VFA concentration also show an increase up to 48.84%, alongside an increase in biogas yield and methane content up to 25.52% and 36.35% respectively. Among all the pre-treatment methods conducted, the combined mechanical and thermal pre-treatment resulted best for co-digestion of fatbergs through anaerobic digestion."

"Pasca kejadian Tsunami Banten pada Bulan Desember 2018. Kecamatan Sumur, Pandeglang menjadi salah satu daerah yang terdampak akibat kejadian tersebut. Salah satu bantuan yang diberikan oleh Tim UI Peduli Banten adalah hibah toren biogas dengan metode pengolahan anaerobic digestion skala pilot guna membantu masyarakat mengurangi timbulan sampah organik dan menghasilkan biogas sebagai sumber energi. Tujuan dari penelitian ini adalah menganalisis pengaruh penambahan substrat limbah ikan terhadap produksi biogas dan metana dari pengolahan sampah organik dengan anaerobic digestion. Rasio substrat sampah organik dan limbah ikan tersebut terbagi dalam dua opsi, yaitu Opsi A dengan rasio 100:0 dan Opsi B dengan rasio 80:20. Selain itu, digunakan ko-substrat kotoran sapi dengan rasio substrat dan ko-substrat 9:1. Penelitian ini dilakukan dengan menggunakan dua reaktor yang sama berukuran 1.200 L selama 21 hari dalam kondisi mesofilik. Hasil penelitian menunjukkan bahwa opsi A dan opsi B secara berurutan memiliki rentang pH sebesar 7,39 dan 7,43; suhu sebesar 29,23°C dan 29,79°C; nilai reduksi TS sebesar 55,92% dan 33,40%; VSD sebesar 40,28% dan 30,28%; reduksi COD sebesar 89,33% dan 92,79%; reduksi SCOD 24,49% dan 76,82%; rasio C/N sebesar 11,39 dan 15,51; rasio VFA/TA sebesar 0,26 dan 0,25; kandungan logam ringan seperti Natrium (Na) sebesar 355 mg/L dan 616 mg/L, Magnesium (Mg) sebesar 413 mg/L dan 620 mg/L, Kalsium (Ca) 556 mg/L dan 607 mg/L, dan Kalium (K) 507 mg/L dan 994 mg/L. Adapun hasil rata-rata produksi biogas pada kedua opsi secara berurutan sebesar 7,56 L/kg.feeding dan 3,21 L/kg.feeding dan produksi gas metana sebesar 1,23 L.CH4/kg.feeding dan 0,4 L.CH4/kg.feeding. Kandungan gas metana pada opsi A dan B sebesar 16,27% dan 12,46%. Hasil menunjukkan bahwa penambahan limbah ikan ke dalam campuran substrat sampah organik sebanyak 20% tidak menunjukkan perbedaan yang signifikan pada proses pengolahannya. Namun, berpengaruh pada produksi biogas dan metana.

---

As an effect of the Banten Tsunami that occurred two years ago in December 2018, the Sumur sub-district of Pandeglang became one of the regions affected by the incident. One form of assistance given by Tim UI Peduli Banten was a pilot-scale biogas torrent with anaerobic digestion processing method, which aims to help the locals reduce the accumulation of organic waste by converting it into biogas. This research aims to analyse the effects that the increase of fish waste substrate has to the biogas and methane production from organic waste processing using anaerobic digestion. Two substrate ratio options were considered for this research: Option A with an organic to fish waste ratio of 100:0 and option B with a ratio of 80:20. In addition, cow faeces was used as co-substrate with a substrate to co-substrate ratio of 9:1. This research was conducted by using two identical 1200 L-sized reactors for the duration of 21 days in a mesophilic condition. Results show that options A and B respectively have pH values of 7,39 and 7,43; temperature values of 29,23°C and 29,79°C; TS reduction values of 55,92% and 33,40%; VSD of 40,28% and 30,28%; COD reduction of 89,33% and 92,79%; SCOD reduction of 24,49% and 76,82%; C/N ratio of 11,39 and 15,51; VFA/TA ratio of 0,26 and0,25; and light metal contents with Sodium (Na) contents of 355 mg/L and 616 mg/L, Magnesium (Mg) contents of 413 mg/L and 620 mg/L, Calcium (Ca) contents of 556 mg/L and 607 mg/L, and Potassium (K) contents of 507 mg/L and 994 mg/L. The average biogas production of the two reactors are 7,56 and 3,21 L/kg.feeding while the methane gas production for reactors A and B are 1,23 L.CH4/kg.feeding dan 0,4 L.CH4/kg.feeding respectively. Methane gas contents are 16,27% and 12,46%. These results show that the 20% addition of fish waste in the organic waste substrate mixture does not show any significant difference in its process but affects its outputs, namely its biogas and methane production."

"Limbah organik yang berpotensi menjadi sumber energi dengan metode anaerobic digestion seringkali mengalami ketidaksabilan karena konsentrasi VFAs yang tinggi. Tujuan dari penelitian ini adalah meningkatkan produksi metana pada AD dengan kombinasi dua substrat yaitu limbah organik (LO) dan kotoran sapi (KS) yang berperan sebagai buffer dengan uji biochemical methane potential (BMP). Uji BMP dilakukan selama 35 hari pada suhu ±35⁰C dengan mengukur volume dan persentase biogas setiap minggu serta pengujian karakteristik awal dan akhir sampel. Volume metana pada setiap variasi perbandingan sampel tidak menunjukkan adanya perbedaan pada minggu ke-5 kecuali pada perbandingan LO /KS :12/1 dengan 3/1, dimana sampel dengan perbandingan 3/1 memiliki potensi yang paling besar yaitu 0,58±0,015(n=3) LCH4/grVS. Penambahan kotoran sapi juga membuat keseluruhan variasi perbandingan stabil selama pengujian BMP terutama sampel 6:1 dengan VFAs/alkalinitas yang <0,3 walaupun rasio C/N <20.

---

Organic waste that could potentially be a source of energy by anaerobic digestion methods are often unstable because of the high concentration of VFAs. The purpose of this research is to increase the production of methane by anaerobic digestion with two substrates combination The combination is between organic waste and cow manure which acted as a buffer with a biochemical methane potential testing. BMP testing conducted over 35 days at a temperature of ± 35⁰C by measuring the volume and percentage of biogas every week and testing the characteristics of the beginning and end of the sample. The result of the sample variation is that the volume of methane did not show any difference in the 5th week except in comparison organic waste / cow manure: 12/1 to 3/1, but the sample with a ratio of 3/1 has the greatest potential, namely 0,58 ± 0.015 (n = 3) LCH4 / grVS. With the addition of cow manure also makes the conditiin of overall variation is stable during testing BMP with VFAs / alkalinity <0.3 although C / N ratio of each variation is <20."

"Pengelolaan limbah lumpur tinja yang sangat terbatas dapat ditingkatkan dengan memanfaatkannya menjadi biogas. Penelitian ini bertujuan untuk mengoptimalkan potensi biogas pada lumpur tinja dengan menambahkan sampah makanan dan sampah taman. Sistem yang digunakan berupa Anaerobic Co-digestion dengan variasi konsentrasi lumpur tinja, yaitu sebesar 25% dan 50% berdasarkan nilai Volatile Solids (VS). Inokulum yang digunakan adalah rumen sapi. Penelitian dilakukan menggunakan reaktor batch skala lab berukuran 51 L dengan masa operasi selama 42 hari. Biogas yang dihasilkan pada konsentrasi lumpur tinja sebesar 25% adalah 0,30 m3CH4/kg VS dengan destruksi VS sebesar 71,93% dan COD sebesar 72,42%. Sedangkan, biogas yang dihasilkan pada konsentrasi lumpur tinja sebesar 50% adalah 0,56 m3CH4/kg VS dengan destruksi VS sebesar 92,43% dan COD sebesar 87,55%. Penelitian ini menyimpulkan bahwa potensi biogas pada konsentrasi lumpur tinja sebesar 50% lebih besar dibandingkan pada konsentrasi lumpur tinja sebesar 25%.

---

Faecal sludge management can be optimized by converting the sludge into biogas. The purpose of this study is to optimize the biogas potential of faecal sludge with food waste and garden waste. The system use Anaerobic Co-digestion with variation of 25% and 50% concentration of faecal sludge based on Volatile Solids (VS). Inoculum used was cow?s rumen. The study was operated using lab-scale batch reactor 51 L for 42 days. Biogas produced from 25% concentration of faecal sludge is 0,30 m3CH4/kg with 71,93% VS and 72,42% COD destruction. Meanwhile, 50% concentration of faecal sludge produced 0,56 m3CH4/kg VS biogas with 92,43% VS and 87,55% COD destruction. This study concludes that biogas potential from 50% concentration of faecal sludge is greater than 25% concentration of faecal sludge."

"Pengadukan dalam Anaerobic Digestion AD dapat dikontrol untuk meningkatkan kinerja proses AD. Penelitian ini bertujuan untuk mengetahui pengaruh intensitas pengadukan terhadap kinerja proses AD, transfer panas di dalam digester dan untuk menganalisis kesetimbangan energi. Penelitian dilakukan menggunakan Continuous Stirred Tank Reactor CSTR dengan volume terisi 400 L yang beroperasi pada suhu rata-rata 27,8 1,07oC. Penelitian operasi skenario pertama dilakukan dengan input substrat sampah makanan dengan Organic Loading Rate OLR 10 kg VS/m3 selama 43 hari dan diaduk menggunakan variasi intensitas pengadukan 30 rpm dan 60 rpm selama 4 jam/hari untuk melihat kinerja proses AD. Operasi skenario kedua dilakukan menggunakan substrat sampah makanan dan kotoran sapi banding limbah Fat Oil and Grease FOG sebesar 10:1 dengan OLR 10 kg VS/m?3 dan dilakukan variasi pengadukan berkala 30 rpm, 15 menit/1,5 jam dan kontinu 30 rpm, 4 jam/hari untuk melihat tansfer panas dalam digester. Hasil penelitian operasi skenario pertama menunjukkan terdapat perbedaan yang signifikan pada kedua intensitas pengadukan.

---

Mixing in Anaerobic Digestion AD can be controlled to improve the performance of the AD process. This study aims to determine the effect of mixing intensity on the performance of the AD process, heat transfer in the digester and to analyze the energy balance. The study was conducted using a Continuous Stirred Tank Reactor CSTR with 400 L working volume which operates at an average temperature of 27,8 1,07 C. In the first scenario operation study, reactor was fed with food waste with Organic Loading Rate OLR 10 kg VS m3 for 43 days and mixed using variation of mixing intensity 30 rpm and 60 rpm for 4 hours day to see AD process performance. The second operation was carried out using food and cow dung with Fat Oil and Grease FOG waste ratio 10 1 and mixed intermittent 30 rpm, 15 min 1.5 hour and continuous 30 rpm, 4 hour day to see heat transfer in the digester. The results of the first scenario operation study showed that there was a significant difference in both mixing intensity p."

"Sampah organik sebagian besar berasal dari sampah makanan yang menyebabkan karakteristiknya memiliki konsentrasi nitrogen dan lemak tinggi, kelembaban tinggi. Limbah domestik di Indonesia memiliki karakteristik kandungan organik yang sesuai dengan kondisi anaerobik. Limbah minyak dan lemak dapat membantu dalam proses AD yang dijadikan sebagai ko-substrat.Penelitian ini bertujuan untuk menganalisis kinerja reaktor dry anaerobic digestion sampah makanan dan menganalisis pengaruh penambahan limbah minyak dan lemak terhadap kinerja reaktor dry anaerobic digestion. Penelitian dilakukan menggunakan Continuous Stirred Tank Reactor CSTR dengan volume terisi 400 L yang beroperasi pada suhu rata-rata 27,8 1,07oC.Penelitian operasi skenario pertama dilakukan dengan input substrat sampah makanan dengan Organic Loading Rate OLR 10 kg VS/m3 selama 43 hari dan diaduk menggunakan variasi intensitas pengadukan 30 rpm dan 60 rpm secara konstan.Operasi skenario kedua dilakukan selama 59 hari menggunakan substrat sampah makanan dan kotoran sapi banding limbah Fat Oil and Grease FOG dengan Organic Loading Rate OLR yang sama dengan skenario pertama dan diaduk menggunakan intensitas 30 rpm secara konstan.Hasil penelitian menunjukkan terdapat perbedaan yang signifikan antara input substrat sampah makanan dengan penambahan limbah minyak dan lemak.

---

Organic waste mostly comes from food waste that has characteristics of high concentrations of nitrogen and fat, high humidity. Domestic waste in Indonesia has characteristics of organic content which is suitable with anaerobic conditions. Waste oil and fat can help in the process of AD which is used as co substrate.

This research is intended to analyze the performance of dry anaerobic digestion reactor of food waste and analyze the effect of oil and waste addition on dry anaerobic digestion reactor performance. The research was conducted using Continuous Stirred Tank Reactor CSTR with a volume of 400 L applied at an average temperature of 27.8 1.07oC.

The first scenario operation study was performed with food waste substrate input with Organic Loading rate OLR is 10 kg VS m3 for 43 days and stirred using constantly strirring intensity variation of 30 rpm and 60 rpm.

The second scenario operation was conducted for 59 days using food waste and cow dung substrate of Fat Oil and Grease waste FOG with Organic Loading Rate OLR which is similar to the first scenario and stirred using constant 30 rpm intensity.

The results of study showed that there was a significant difference between the input of food waste substrate with the addition of Fat Oil and Grease p."

"Flora mikroorganisme merupakan salah satu aspek penting dalam optimalisasi proses berlangsungnya anaerobic digestion. Biostarter merupakan bahan penyedia flora mikroorganisme pendegradasi yang berperan dalam proses penguraian limbah organik. Tujuan penelitian ini yaitu untuk menganalisis pengaruh jenis inokulum dengan penggunaan biostarter berupa kotoran sapi, rumen sapi, EM4, OrgaDec, PROMI terhadap kinerja proses dan hasil penyisihan Total Solids (TS), Volatile Solids (VS), Chemical Oxygen Demand (COD), dan produksi volume biogas. Penelitian dilakukan dengan metode Biochemical Methane Potential (BMP) yang dilakukan selama 48 hari menggunakan substrat berupa sampah organik dari UPS Universitas Indonesia dan inokulum dengan enam variasi sampel yaitu kotoran sapi, rumen sapi, EM4 dan molase, EM4 dan zat pengaya, OrgaDec dan zat pengaya, serta PROMI dan zat pengaya. Dimana inokulum sebelumnya melalui proses aklimatisasi dengan laju beban organik sebesar 10 kg-VS/m3-hari dan diikuti dengan proses degasifikasi. Hasil penelitian menunjukkan bahwa 5 gram substrat berupa sampah makanan dari UPS Universitas Indonesia dapat dikonversi menjadi biogas dengan volume 4,37 mL/48 hari (menggunakan EM4 dan Molase); 6,91 mL/48 hari (menggunakan rumen sapi); 7,24 mL/16 hari (menggunakan PROMI dan Zat Pengaya); 14,39 mL/16 hari (menggunakan OrgaDec dan Zat Pengaya); 22.37 mL/48 hari (menggunakan EM4 dan Zat Pengaya); serta 261.25 mL/48 hari (menggunakan Kotoran Sapi). Hasil uji analisis statistik menggunakan One Way ANOVA menunjukkan bahwa perbedaan penggunaan inokulum mepengaruhi nilai persentase TS Reduction dan VS Reduction (p < 0,05), dimana inokulum berupa campuran biostarter PROMI dan zat pengaya memiliki nilai persentase reduksi TS dan VS terbesar. Di samping itu, hasil uji statistik dengan menggunakan Independent T-Test menunjukkan bahwa biostarter komersial dalam inokulum dapat meningkatkan persentase TS Reduction (p < 0,05) dengan menggunakan anaerobic digestion metode BMP.

---

Microbial flora is one of significant aspects in optimization of the anaerobic digestion process. Biostarter is material that provides microbial flora which has role in organic waste degradation. The aim of this study was to find out and analyze the effect of inoculum type with the use of biostarter such as cow manure, cow rumen, EM4, OrgaDec, PROMI on process performance and removal of Total Solids (TS), Volatile Solids (VS), Chemical Oxygen Demand (COD), and production of biogas volume. This study conducted with Biochemical Methane Potential (BMP) method for 48 days using organic waste from Unit Pengolahan Sampah Universitas Indonesia as substrate and inoculum with six sample variations—such as cow manure; cow rumen; EM4 and molasses; EM4 and enrichment ingredients; OrgaDec and enrichment ingredients; PROMI and enrichment ingredients, which those inoculums were previously acclimated (with organic loading rate in the amount of 10 kg-VS/m3-day) and were followed with degassing process. The results of this study showed that 5 grams of substrate, namely food waste from Unit Pengolahan Sampah Universitas Indonesia can be converted into biogas with a volume of 4,37 mL/48 days (using EM4 and molasses); 6,91 mL/48 days (using cow rumen); 7,24 mL/16 days (using PROMI and enrichment ingredients); 14,39 mL/16 days (using OrgaDec and enrichment ingredients); 22,37 mL/48 days (using EM4 and enrichment ingredients); and 261,25 mL/48 days (using cow manure). The results of statistical analysis using One Way ANOVA showed that the difference in the use of inoculums influenced the value of the percentage of TS Reduction and VS Reduction (p < 0,05), where the inoculum in the form of a mixture of PROMI biostarter and enrichment ingredients had the highest TS and VS reduction percentage values. In addition, the results of statistical test using the Independent T-Test showed that commercial biostarter in the inoculum can increase the percentage of TS Reduction (p < 0.05) by anaerobic digestion with BMP method.

"

"Organic waste mostly comes from food waste, which has characteristics of high concentrations of nitrogen and fat, and high humidity. Domestic waste in Indonesia has a high organic content, which is suitable for anaerobic conditions. Waste oil and fat can be used as co-substrates and are helpful in yielding biogas in an anaerobic digestion (AD) process. The aim of this research is to analyze the performance of a food waste dry anaerobic digestion reactor after the addition of fat oil and grease (FOG) waste. The research was conducted using a semi-continuous stirred tank reactor (SCSTR) with an active volume of 400 L, operated at an average temperature of 27.8±1.07oC. Two experimental scenarios were performed, using varying types of food waste, food waste with cow dung as substrate, and FOG waste as co-substrate. The experiment was conducted using an Organic Loading Rate (OLR) of approximately 10 kg VS/m3, with a constant mixing intensity of 30 rpm. The results show that there was a significant difference between the input of food waste substrate with and without the addition of FOG (p<0.05). The average reduction of volatile solids (VS) and chemical oxygen demand (COD) removal in the substrate input with FOG addition was higher than without the addition. The mean percentages of COD removal and VS reduction in the substrate input with FOG addition were 63.3±2.71% and 89.30±1.55%, whereas those for substrate input without FOG addition were 59.45±4% and 77.65±1.46%, respectively. The study concludes that the use of FOG as a co-substrate in a dry AD food waste reactor is not only beneficial in reducing FOG waste generation, but also has a significant impact on reducing COD and VS, which can enhance potential biogas yield."