Potential and characterization biogas from tofu liquid waste with addition cow dung and effective microorganisms 4 as biocatalyst

2021 ◽  
Author(s):  
Wideawati Nurjuwita ◽  
Ashadi Sasongko ◽  
Tan Jeremy Hartanto ◽  
Mochammad Purwanto
Keyword(s):  
Liquid Waste ◽  
Cow Dung ◽  
Effective Microorganisms

scholarly journals PENGARUH PENAMBAHAN BIOAKTIVATOR EM-4 TERHADAP PRODUKSI BIOGAS DARI LIMBAH CAIR INDUSTRI TAHU

2021 ◽  
Vol 5 (2) ◽  
pp. 362
Author(s):  
Jamiluddin Ahmad Muzakki
Keyword(s):  
Constant Pressure ◽  
Biogas Production ◽  
Combustion Process ◽  
Liquid Waste ◽  
Maximum Pressure ◽  
Effective Microorganisms ◽  
Unpleasant Odor ◽  
The Difference ◽  
Liquid Manometer ◽  
Blue Flame

Tofu industrial waste is generally divided into two forms of waste, namely solid waste and liquid waste. The liquid waste of the tofu industry contains organic material that can be decomposed anaerobically into methane gas (CH4), other gases, and water which is commonly called biogas. One of the potential biocatalysts as a source of microorganisms in biogas production is Effective Microorganisms 4 (EM-4). This research was conducted by adding EM-4 with a concentration of 0.5%; 1%; and without EM-4 into 15 liters of tofu liquid waste in the digester for fermentation for 7 days. Observation of the pressure on the manometer seen from the difference in the height of the liquid manometer U and the combustion process was carried out on the 7th day (constant pressure). The maximum pressure of biogas for 7 days at 1% EM4 of 927,864 kg/m.s2 produces a blue flame, has an unpleasant odor, does not cause smoke with a fire height of 12,602 mm. So it can be concluded that the greater concentration of EM-4 used, the greater the pressure of biogas and fire

scholarly journals PENGARUH KOMPOSISI DAN WAKTU FERMENTASI CAMPURAN LIMBAH INDUSTRI TAHU DAN KOTORAN SAPI TERHADAP KANDUNGAN GAS METHANE PADA PEMBANGKIT BIOGAS

2020 ◽  
Vol 6 (1) ◽  
pp. 47
Author(s):  
Mohammad Nurhilal ◽  
Purwiyanto Purwiyanto ◽  
Galih Mustiko Aji
Keyword(s):  
Alternative Energy ◽  
Liquid Waste ◽  
Gas Content ◽  
Cow Dung ◽  
Fermentation Time ◽  
Methane Gas ◽  
Industry Waste ◽  
Naoh Solution ◽  
Carbon Dioxide Co2 ◽  
Methane Bacteria

Biogas is alternative energy produced from the anaerobic activity process of methane bacteria obtained by fermentation. Anaerobic activation is a sequence of microorganism processes breaking down biodegradable  materials without oxygen. Biogas is mostly produced from cow dung and tofu industry waste that has the potential to contain methane (CH4), carbon dioxide (CO2) and hydrogen sulfide (H2S). To reduce the content of (CO2) and (H2S) and to increase the element of methane gas, the purification process is needed to do. Purification can be carried out by absorption techniques using water, NaOH solution, and zeolite/silica gel. The purpose of this study is to examine the methane gas content of variations in the composition of cow dung and tofu liquid waste and the fermentation time. The method used was an experiment by varying the composition of cow dung and tofu liquid waste by 40%: 60%; 50%: 50%; and 60%: 40%, as well as variations in the fermentation time of120, 168 and 216 hours of fermentation. The results showed that the highest methane gas content in the composition of a mixture of cow dung and tofu liquid waste was 50:50 in 168 hours of fermentation which was equal to 2.806%. The content of methane gas was influenced by the fermentation time, the pH conditions in the digester, and the intensity of stirring the biogas material in the digester.

scholarly journals PENGARUH WAKTU FERMENTASI DAN KOMPOSISI LIMBAH KULIT BUAH AREN (Arenga pinnata) DENGAN STARTER KOTORAN SAPI TERHADAP BIOGAS YANG DIHASILKAN

2015 ◽  
Vol 4 (3) ◽  
pp. 47-51
Author(s):  
Deril Clinton ◽  
Netti Herlina
Keyword(s):  
Biogas Production ◽  
Liquid Waste ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Suspended Solid ◽  
Anaerobic Digester ◽  
Cow Dung ◽  
Economic Potential ◽  
Standard Quality ◽  
Leather Waste

Sugar palm or commonly called as Aren (Arenga pinnata) is a multipurpose crop. The widely use of sugar palm for  food industries, generates sugar palm leather waste which can be used as a biomass for biogas production. This study aims to determine the quality and the quantity of biogas made from a mixed of sugar palm leather waste and water using batch anaerobic digester system and to evaluate the economic potential of biogas production from the mixture. Research carried out by mixing sugar palm leather with water in a ratio of 1:13; 1:11,5; 1:10; 1:9; and 1:8 (w/w) with cow dung as a starter mixed with water in an anaerobic digester batch system. Observed variables are biogas, biogas composition, Total Suspended Solid (TSS) and Chemical Oxygen Demand (COD) and analyzed fermentation slurry for every 3 days. pH for this study is set in the range of 6,4-8. The largest volume of biogas production is found at a ratio 1:11,5 (w/w)  mixture of sugar palm leather and water that is 637 mL for total waste 1,5 L with 60,983 % methane contain. TSS removal percentage obtained was 88,10 %and percentage of COD removal by 82,43%. Slurry produces unqualified TSS and COD with the standard  quality of liquid waste. The economic potential of sugar palm leather waste and water for producing biogas is beneficial.

scholarly journals Kinetic Study of Biogas Production from Animal Manure and Organic Waste in Semarang City by Using Anaerobic Digestion Method

2021 ◽  
Vol 21 (5) ◽  
pp. 1221
Author(s):  
Fahmi Arifan ◽  
Abdullah Abdullah ◽  
Siswo Sumardiono
Keyword(s):  
Kinetic Model ◽  
Organic Waste ◽  
Biogas Production ◽  
Liquid Waste ◽  
Animal Manure ◽  
Chicken Manure ◽  
Cow Dung ◽  
Order Kinetic ◽  
First Order ◽  
Order Kinetic Model

The biogas fermentation from animal manure and organic waste was investigated with a comparison percentage of raw material used inside the digester with the anaerobic digestion process. Animal manure consists of cow dung and chicken manure, while organic waste consists of tofu liquid waste and cabbage waste. This study used a batch process that was operated at 55 °C incubator temperature for 90 days. The results of experimental data were predicted with a modified Gompertz model and first-order kinetic model. The equation of the modified Gompertz model to predict biogas production was  with  is cumulative production of methane; P∞ = methane production potential; Rm = maximum specific speed methane production; λ = is lag phase period or minimum time to produce biogas; e = math constant (2.7182) and t = biogas production cumulative time. The equation first-order kinetic model was Y = Ym (1-exp(-k). The highest biogas yield was obtained by variable 3 in both kinetic studies compared to 70% cow dung, 15% chicken manure, and 15% tofu liquid waste. Gompertz's kinetic study predicted variable three would produce 3273.20 mL/g of total solid (TS). In comparison, the first-order kinetic model predicted that variable three would produce 3517.95 mL/(g Ts).

scholarly journals Effectiveness Analysis of Anaerobic Digestion Method in Making Biogas from Animal Manure and Tofu Liquid Waste

2021 ◽  
Vol 16 (2) ◽  
pp. 84-94
Author(s):  
Fahmi Arifan ◽  
Abdullah Abdullah ◽  
Siswo Sumardiono
Keyword(s):  
Anaerobic Digestion ◽  
Organic Waste ◽  
Raw Materials ◽  
Liquid Waste ◽  
Methanogenic Bacteria ◽  
Chicken Manure ◽  
Cow Dung ◽  
Digestion Method ◽  
Anaerobic Digestion Process ◽  
Digestion Process

Organic waste has high COD and BOD content, so it is dangerous if disposed of directly into the environment. Organic waste processing, such as waste from livestock manure and liquid tofu waste, requires a process that can reduce COD and BOD levels as well as produce valuable products. Anaerobic digestion method is the proper process to convert complex compounds in waste into simpler compounds with methanogenic bacteria into a renewable energy product, namely biogas. On the other hand, the anaerobic digestion process can reduce COD and BOD levels in the biogas formation process. This study uses raw materials such as cow manure and chicken manure, and liquid tofu waste. The variables that produced the largest biogas were those with a ratio of 70% cow dung, 15% chicken manure, and 15% tofu liquid waste with a total of 3,251.5 mL. Then, the COD and BOD levels decreased significantly with more than 98% COD removal, and more than 95% BOD removal in all variables at the end of the anaerobic digestion process.

scholarly journals Biocomposites from anaerobically digested Eichhornia crassipes ((Mart.) Solms), as an alternative solution for the post-phytoremediation process

2021 ◽  
Vol 2 (2) ◽  
pp. 139-144
Author(s):  
Gabriella Marsaulina ◽  
◽  
Taufik Taufikurahman ◽  
Andira Rahmawati
Keyword(s):  
Anaerobic Digestion ◽  
Water Hyacinth ◽  
Eichhornia Crassipes ◽  
Chromium Content ◽  
Liquid Waste ◽  
Absorption Capacity ◽  
Cow Dung ◽  
Anaerobic Digestion Process ◽  
Digestion Process ◽  
Water Hyacinths

Water hyacinth (Eichhornia crassipes) is a plant species commonly used for phytoremediation to reduce high chromium content in tannery liquid waste in Garut, West Java. Water hyacinth materials harvested from the phytoremediation can be used for the anaerobic digestion process to produce biogas and bio-slurry. This study aimed to determine the reduction of chromium content found in water hyacinths due to the anaerobic digestion process, and utilization of bio-slurry from the anaerobic digestion process as a biocomposite material. The anaerobic digestion process was carried out for 33 d using biodigesters and the composition of the biodigesters were varied into 100% dried water hyacinths and 80% water hyacinths with the addition of 20% cow dung. The bio-slurry from the anaerobic digestion process was then used for making biocomposites with 3 different compositions, i.e., 75 and 25%; 50 and 50%; and 25 and 75% of cement and bio-slurry, respectively. The average chromium content found in water hyacinths from the phytoremediation process without anaerobic digestion process was 41.964 mg/l. The results show a reduction in the amount of chromium after the anaerobic digestion process was found in each composition of bio-slurry, which were 15.979 mg/l (100% water hyacinth) and 14.861 mg/l (80% water hyacinth + 20% cow dung). Biodigester with a composition of 80% water hyacinth + 20% cow dung produced the highest average volume of biogas which was 0.424 l. The biocomposite of 75% cement and 25% bio-slurry had the highest compressive strength value of 30.598 MPa and water absorption capacity of 37.25%. It can be concluded that biocomposite with the composition of 75% cement and 25% water hyacinth bio-slurry is promising to be used as an alternative material for buildings.

scholarly journals Analysis of the effect of internal gas pressure of an anaerobic digester on biogas productivity of a mixture of cow dung and tofu liquid waste

2021 ◽  
Author(s):  
Amaliyah Rohsari Indah Utami ◽  
Ravanska Alfaresa Ryantara ◽  
Erni Dwi Sumaryatie ◽  
Indra Chandra
Keyword(s):  
Liquid Waste ◽  
Anaerobic Digester ◽  
Gas Pressure ◽  
Cow Dung ◽  
Biogas Productivity

scholarly journals Optimization of Methane Gas Formation Rate with The Addition of EM4 Starter-made from Tofu Liquid Waste and Husk Rice Waste Using Biogas Reactor-Fixed Dome in Langensari West Ungaran

2018 ◽  
Vol 31 ◽  
pp. 02016
Author(s):  
Fahmi Arifan ◽  
Fuad Muhammad ◽  
Sri Winarni ◽  
Hafizh Rama Devara ◽  
Latifah Hanum
Keyword(s):  
Raw Materials ◽  
Formation Rate ◽  
Liquid Waste ◽  
Calorific Value ◽  
Cow Dung ◽  
Methane Formation ◽  
Fermentation Time ◽  
Alkaline Conditions ◽  
Biogas Reactor ◽  
Materials Used

Indonesia is a country that has abundant energy resources, namely oil, gas, coal, geothermal, and so forth. Biogas is an alternative fuel that can be used as a substitute for primary fuel. The term biogas is already familiar to the people, it is because biogas has usefulness as a vehicle fuel, domestic (cooking), and generate electricity. Cow dung has a value of C / N ratio is large enough that 18. Rice husk has a C / N ratio is sufficient High temperatures of 38.9. EM-4 (effective microorganism) is a bacterial culture which is usually used as an activator. In the manufacture of biogas from waste fluids out and chaff has the advantage because the content of the C / N is high enough. The composition of the raw materials used are liquid wastes out of 5 kg and 1 kg of husk-em with the addition of 4500 ml and the resulting calorific value of 1047.9 A fermentation time for 9 days. Ph maintained in neutral or alkaline conditions, namely 7-7.5, because the effectiveness of the methane formation is highly dependent on pH wherein the microorganism will grow and thrive in neutral. The test results has been done is the color of the flame and the time at yield is good enough where the color of the flame produced at day to9 blue with time for 40 seconds.

Treatment of textile milldye sludge by vermicomposting using Perionyx excavatus species

2016 ◽  
Vol 5 (11) ◽  
pp. 4999
Author(s):  
Vasanth Pandiyan C.* ◽  
S. Ravichandran
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
High Growth ◽  
High Growth Rate ◽  
Cow Dung ◽  
Textile Dye ◽  
Textile Mill ◽  
Perionyx Excavatus ◽  
Effective Microorganisms ◽  
Waste Sludge

The accumulation of solid waste sludge from Textile dye sludge causes a great problem in its safe disposal. Perionyx excavatus were cultured under laboratory condition with 60-80%moisture in mud pot container following with the mixing ratio of TMS (Textile Mill Sludge) + SD(Sawdust) designated as X (1:1) respectively add inoculums (EM) Effective microorganisms and (CD) Cow dung were also used in the above ratio. Once in 15days upto 90days number of hatchling, worm growth rate and the weight of earthworms were determined and analysed statistically. On the basic of the efficiency of four treatments with control condition, (EM) separately, (CD) separately and (EM+SD) combined together were analysed to support the reproduction and growth of Perionyx excavatus has been done. The growth rate, weight gain, and hatchling production observed in the mixed ratio of TMS+SD (1:1) ratio with the above treatments were determined and better combination of mixed ratio with appropriated inoculums was determined. The mixed of TMS+SD+(EM+CD) gave high growth rate, weight gain and hatchling production of selected vermiculture Perionyx excavatus. Hence TMS in combination SD in (1:1ratio) can be used for vermiculture.

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