scholarly journals Simulasi Homogenitas Pencampuran Air Limbah Pabrik Kelapa Sawit dan Pengaruhnya Terhadap Pengolahan Awal di Kolam Ekualisasi Pilot Plant Biogas Sei Pagar

2020 ◽  
Vol 21 (2) ◽  
pp. 183-189
Author(s):  
Imron Masfuri ◽  
Soleh Soleh ◽  
Astri Pertiwi ◽  
Bambang Muharto ◽  
Trisaksono Bagus Priambodo
Keyword(s):  
Palm Oil ◽  
Biogas Production ◽  
Liquid Waste ◽  
Microbial Life ◽  
Long Time ◽  
Gas Products ◽  
Palm Oil Mill ◽  
Flow Power ◽  
Good Homogeneity ◽  
Equalization Tank

ABSTRACTPalm oil mill effluent (POME) produced from palm oil mills is classified as waste that can pollute the environment and needs severe treatment because it still contains high BOD and COD. POME has the potential to be further processed to produce biogas products through the anaerobic digestion process. Anaerobic process of biogas production from Palm Oil Mill Effluent (POME) waste is a fermentation process which quite a long time. So it is necessary to have a POME pretreatment process for preparation before being fed into the biodigester reactor. It is aimed at considering optimum conditioning, good homogeneity, and preparing for the formation of gas products. One of the POME pretreatment steps was carried out in an equalization tank to be homogenized before entering the reactor. However, when passing the equalization process, there are indications of sedimentation or separation between liquid waste and dissolved solids. Thus, an attempt was made to carry out a stirring system so that homogeneity would occur with the agitator. Therefore, the POME conditions in all parts of the pond could be relatively similar. The stirring is one of the factors that influence microbial life. In this research, a stirrer design simulation will be conducted to determine the effectiveness of the stirrer and homogeneity of POME in equalization pond. Design is adjusted to the actual POME parameters according to results of the analysis carried out related to POME physical properties such as temperature, density, viscosity, pH, and flow rate. Conditions analyzed in the simulation are agitator speed, the direction of fluid flow, power consumption, and homogeneity of mixing.Keywords: agitator, mixing, equalization tank, homogeneity, POMEABSTRAKLimbah cair pabrik kelapa sawit (POME) yang dihasilkan dari pabrik pengolahan sawit tergolong limbah yang dapat mencemari lingkungan dan perlu penanganan serius, karena masih mengandung BOD dan COD tinggi. POME sangat berpotensi untuk diolah lebih lanjut untuk menghasilkan produk biogas melalui proses penguraian anaerob. Proses pengolahan air limbah pabrik minyak sawit menjadi biogas merupakan proses fermentasi anaerobik yang memerlukan waktu yang lama. Oleh karena itu, perlu adanya proses pengolahan awal POME untuk penyiapan sebelum diumpankan ke dalam reaktor biodigester untuk pengkondisian yang optimum, homogenitas yang baik, dan persiapan pembentukan produk gas. Salah satu pengolahan awal POME dilakukan di kolam ekualisasi untuk proses homogenisasi air limbah sebelum masuk ke dalam reaktor. Selama melewati kolam ekualisasi, ada indikasi terjadi pengendapan atau pemisahan antara limbah cair dengan padatan terlarut. Untuk itu, muncul upaya untuk melakukan sistem pengadukan agar tercapai kondisi homogen dengan menggunakan pengaduk agar kondisi POME di seluruh bagian kolam relatif sama. Adapun pengadukan merupakan salah satu faktor yang berpengaruh pada kehidupan mikroba. Pada penelitian ini akan dilakukan simulasi desain pengaduk yang untuk mengetahui efektivitas pengaduk dan homogenitas POME di dalam kolam equalisasi. Desain disesuaikan dengan parameter POME sesuai hasil analisis yang dilakukan terkait properti fisik POME seperti temperatur, densitas, viskositas, pH, dan laju alir. Kondisi yang dianalisis dalam simulasi adalah kecepatan putaran pengaduk, arah aliran fluida, konsumsi daya dan homogenitas pencampuran.Kata kunci: pengaduk, pencampuran, kolam ekualisasi, homogenitas, POME

scholarly journals The Minimum Requirements for Nickel and Cobalt as Trace Metals in Thermophilic Biogas Fermentation of Palm Oil Mill Effluents

2018 ◽  
Vol 34 (3) ◽  
pp. 1278-1282 ◽  
Author(s):  
Bambang Trisakti ◽  
Fatimah Batubara ◽  
Hiroyuki Daimon ◽  
Irvan .
Keyword(s):  
Trace Metals ◽  
Palm Oil ◽  
Biogas Production ◽  
Liquid Waste ◽  
Total Solid ◽  
Raw Material ◽  
Continuous Stirred Tank Reactor ◽  
Minimum Requirements ◽  
Thermophilic Condition ◽  
Palm Oil Mill

This paper reports the minimum requirements of nickel and cobalt as trace metals in the formation of biogas from the digestion of palm oil mill effluent (POME). Anaerobic digestion was conducted in a two-liter continuous stirred tank reactor (CSTR) and operated at a thermophilic condition of 55oC. As raw material, a non-treated liquid waste from the mills was used. Hydraulic retention time (HRT) of the digesters was preserved at six days. The results come to the conclusion that the decrease of trace metals concentration didn’t influence the total solid, volatile solid concentration and also M-alkalinity. Based on the analyzed parameter, the reduction of trace metals concentration up to 97% of the initial nickel and cobalt concentration, 0.49 and 0.42 mg/L for nickel and cobalt, still allows the fermentation to obtain optimum biogas production, where the 90% reduction of trace metals produced the average volume of biogas 10.5 L/day at the rate of VS degradation 52-53%.

scholarly journals Inoculum Selection and Micro-Aeration for Biogas Production in Two-Stage Anaerobic Digestion of Palm Oil Mill Effluent (POME)

2019 ◽  
Vol 8 (1) ◽  
pp. 14-21
Author(s):  
Sri Ismiyati Damayanti ◽  
Dian Fitriani Astiti ◽  
Chandra Wahyu Purnomo ◽  
Sarto Sarto ◽  
Wiratni Budhijanto
Keyword(s):  
Anaerobic Digestion ◽  
Palm Oil ◽  
Volatile Fatty Acids ◽  
Biogas Production ◽  
Liquid Waste ◽  
Palm Oil Mill Effluent ◽  
Cow Manure ◽  
Two Stage ◽  
Second Stage ◽  
Palm Oil Mill

Two-stage anaerobic fluidized bed is an innovation in anaerobic digestion technology intended to handle liquid waste with high organic loading and complex substrate. The process is based on separation between acidogenic/acetogenic and methanogenic processes. The first stage is anaerobic process to convert substrate (represented as soluble chemical oxygen demand/sCOD) into volatile fatty acids (VFA). The second stage is methanogenic process to convert VFA into biogas. This study aimed to separate acidogenic/acetogenic and methanogenic processes by means of limited injection of air (micro-aeration) and inoculum selection. Micro-aeration was introduced in acidogenic/acetogenic stage because the relevant microbes were facultative so that the obligate anaerobic methanogens will be suppressed. On the other hand, the methanogenic reactor was kept completely anaerobic to ensure methanogenic dominance over acidogenic/acetogenic ones. Two sources of inoculums were used in this study, i.e. anaerobically digested biodiesel waste and anaerobically digested cow manure. Both inoculums were taken from active biogas reactor treating biodiesel waste and cow manure, respectively. Experiments were run in batch reactors treating palm oil mill effluent (POME) as the substrate for the acidogenic/acetogenic reactor. After the reaction in the first stage reached the minimum substrate concentration, the content of the reactor was used as the substrate for the methanogenic reactor as the second stage. Routine measurements were taken for sCOD and VFA concentrations, biogas production, and methane concentration in the biogas. Results confirmed that micro-aeration maintained good performance of acidogenic/acetogenic process, which was indicated by peaks in VFA accumulation, while suppressing methanogenic activities as no methane produced in this stage. Digested biodiesel waste was superior inoculum to be compared to digested cow manure with respect to sCOD removal. In the methanogenic stage, digested biodiesel waste also performed better as inoculum as it led to higher VFA conversion, higher biogas production rate, and higher methane content in the biogas. 

scholarly journals Palm Oil Mill Effluent (POME) utilization for bio-hydrogen production targeting for biofuel : optimization and scale up

2018 ◽  
Vol 67 ◽  
pp. 02003
Author(s):  
Joni Prasetyo ◽  
S.D. Sumbogo Murti ◽  
Semuel Pati Senda ◽  
Andi Djalal Latief ◽  
R. Dwi Husodo Prasetyo ◽  
...  
Keyword(s):  
Hydrostatic Pressure ◽  
Palm Oil ◽  
Biogas Production ◽  
Liquid Waste ◽  
Palm Oil Mill Effluent ◽  
Active Sludge ◽  
Working Volume ◽  
Palm Oil Mill ◽  
In The Beginning ◽  
Biogas Productivity

Indonesia is the largest palm plantation that reaches 32 million tonnes palm oil production per year with 84 million tones Palm Oil Mill Effluent (POME) as liquid waste. POME contains many organic substances. The quality of POME for its utilization is generally measured in COD which has range 30000 -100.000 ppm. Microbial convertion for biogas especially for bio-H2 enrichment, the active sludge was pretreated physically to suppress methanogenesis microbes. H2 Biogas production was conducted at pH 5-6. Additional 10% phosphate buffer was done in the beginning only. The production of H2 biogas was influenced by hydrostatic pressure in closed batch system. Inoculumsmedium ratio also influenced the H2 biogas productivity, reached 0.7 ml/ml POME with more than 50% H2. Scaling up anaerobic in 2.5 L working volume bioreactor, H2 biogas productivity reached 0.86 ml/ml POME by 10% inoculums because of no hydrostatic pressure. In bio-reactor, H2-CO2 in H2 biogas was affected by the amount of active sludge. In the beginning of H2 biogas, H2 reached 80%. However, at subsequence process, fed batch, with retention time 2.5 day and 3 days H2 biogas production, the active sludge was accumulated and caused the decreasing H2, finally only 46% at the 3rd day. The consortium tended to produce more CO2 as the result of primary metabolite rather than H2. Raising inoculums to level 15% improved productivity only in the beginning but H2 content was getting less, only 59%. Additional feeding would cause more accumulation sludge and more decreasing H2 content to 31% on the 3rd day. Thus, the ratio of active sludge and substrate availability must be controlled to gain optimum H2. Limited substrate will cause the direction of bio-conversion more in CO2 rather than H2.

scholarly journals Alternative scenarios to utilise excess biogas in Palm Oil Mill

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Novelita Wahyu Mondamina ◽  
Deni Rachmat ◽  
Mochammad Waris Tegar Laksono
Keyword(s):  
Solid Waste ◽  
Palm Oil ◽  
Biogas Production ◽  
Palm Kernel ◽  
Liquid Waste ◽  
Biofuel Production ◽  
Observation Data ◽  
Fresh Fruit Bunch ◽  
Palm Kernel Shell ◽  
Palm Oil Mill

Palm Oil Mill is a factory which converts Fresh Fruit Bunch (FFB) to Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). Within FFB converting processes, two types of waste are produced: 1)liquid waste and 2)solid waste. Liquid waste, named Palm Oil Mill Effluent (POME), contributes up to 60% of total FFB. Solid waste includes palm kernel shell and meal, fibre and empty fruit bunch gives in aggregate around 20% of total FFB. Initially, Palm kernel shell (PKS) is commonly utilised as fuel for boiler. Then in some mills, POME was additionally used as biomass for biofuel production (biogas) to support power supply in the mill. Biogas is utilised to generate electricity for Kernel Crushing Plant (KCP). Field observation data shows that electricity demand for KCP is 19.5 MWh/day or equivalent with 45% of total biogas production. The excess biogas, equivalent with 11,000 kWh/day, is flared. An alternative scenario instead of flaring is to use biogas as fuel for boiler. Thus, the previous fuel (PKS) could potentially be allocated for selling. Another scenario is to utilise excess biogas electricity generation to be distributed to staff houses near the mill. Therefore, this research study aims to calculate excess biogas that could be used for those scenarios: 1)Fuel substitution in the mill with different type of process, 2)Household electricity. Result shows that biogas demand in each scenario can supply 1) Minimum 2,900 kWh/day for non-processing hours and 6,436.65 kWh/day for processing hours, 2) Electricity for 557 houses/day.

scholarly journals Enhancement of Thermophilic Biogas Production from Palm Oil Mill Effluent by pH Adjustment and Effluent Recycling

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 878
Author(s):  
Apinya Singkhala ◽  
Chonticha Mamimin ◽  
Alissara Reungsang ◽  
Sompong O-Thong
Keyword(s):  
Palm Oil ◽  
Oil Palm ◽  
Biogas Production ◽  
Optimal Dose ◽  
Methane Yield ◽  
Ph Adjustment ◽  
Oil Palm Ash ◽  
Palm Oil Mill ◽  
Archaea Community ◽  
Effluent Recycling

A sudden pH drops always inhibits the anaerobic digestion (AD) reactor for biogas production from palm oil mill effluent (POME). The pH adjustment of POME by oil palm ash addition and the biogas effluent recycling effect on the preventing of pH drop and change of the archaea community was investigated. The pH adjustment of POME to 7.5 increased the methane yield two times more than raw POME (pH 4.3). The optimal dose for pH adjustment by oil palm ash addition was 5% w/v with a methane yield of 440 mL-CH4/gVS. The optimal dose for pH adjustment by biogas effluent recycling was 20% v/v with a methane yield of 351 mL-CH4/gVS. Methane production from POME in a continuous reactor with pH adjustment by 5% w/v oil palm ash and 20% v/v biogas effluent recycling was 19.1 ± 0.25 and 13.8 ± 0.3 m3 CH4/m3-POME, respectively. The pH adjustment by oil palm ash enhanced methane production for the long-term operation with the stability of pH, alkalinity, and archaea community. Oil palm ash increased the number of Methanosarcina mazei and Methanothermobacter defluvii. Oil palm ash is a cost-effective alkali material as a source of buffer and trace metals for preventing the pH drop and the increased methanogen population in the AD process.

scholarly journals INDONESIAN NANOCLAYS FOR THE REMOVAL OF NITRATE IN LIQUID WASTE CONTAINING PALM OIL MILL EFFLUENT

2020 ◽  
Vol 13 (02) ◽  
pp. 164
Author(s):  
Untung Sudadi ◽  
Syaiful Anwar ◽  
Rendy Anggriawan ◽  
Tengku Afrizal
Keyword(s):  
Palm Oil ◽  
Liquid Waste ◽  
Land Application ◽  
Palm Oil Mill Effluent ◽  
Isothermal Adsorption ◽  
Volcanic Tuff ◽  
Natural Adsorbent ◽  
Nitrate Adsorption ◽  
Palm Oil Mill ◽  
Potential Use

Land application of liquid waste containing palm oil mill effluent (LW-POME) as soil ameliorant can cause water contamination due to its high content of nitrate if improperly treated. Indonesia is rich with volcanic tuff materials that contain variable charged soil clay minerals. This study was aimed at to extract nanoclays (fraction sized <200 nm) from volcanic tuffs of Mt. Salak, West Java, Indonesia, and evaluate their potential use as adsorbent of nitrate in LW-POME. By applying dispersion, ultrasonication, centrifugation, and dialysis separation techniques, it could be extracted positively charged nanoclays nc3 and nc4 from the respectively tuff materials tv3 and tv4. Their potential use as natural adsorbent of nitrate as anionic contaminant was evaluated using Langmuir isothermal adsorption model. After 48 h equilibration, it could be extracted 4.33 mg nc3/g tv3 and 7.73 mg nc4/g tv4 with nitrate adsorption maxima of 48.3 and 40 mg/g for nc3 and nc4, respectively. The removal of nitrate in the LW-POME from 62 to 20 mg/L as to comply with the Indonesian liquid waste quality standard required 29.81 mg nc3/L or 39.34 mg nc4/L. The extracted nanoclays were considered prospective to be utilized as natural adsorbent for nitrate removal in LW-POME. Keywords: anionic contaminant, natural adsorbent, nitrate adsorption, volcanic tuff

scholarly journals POTENSI MIKROORGANISME SEBAGAI BIOFERTILIZER

2019 ◽  
Vol 15 (2) ◽  
pp. 226
Author(s):  
Lusia Widiastuti ◽  
Y. Sulistiyanto ◽  
Adi Jaya ◽  
Yusurum Jagau ◽  
Liswara Neneng
Keyword(s):  
Palm Oil ◽  
Liquid Waste ◽  
Methyl Cellulose ◽  
Gram Negative Bacteria ◽  
Bacterial Colony ◽  
Central Kalimantan ◽  
Gram Positive Bacteria ◽  
Yeast Extract Mannitol ◽  
Palm Oil Mill ◽  
Carboxy Methyl

This research was carried out in the oil palm plantation of PT. MuliaSawitAgro Lestari (PT. MSAL) Gunung Mas Regency Central Kalimantan Province for 3 months starting in January 2019 until March 2019. The purpose of this study was to identify the potential of microorganisms as biofertilizers from palm oil mill effluent (PKS). This research is an exploratory study conducted in the Laboratory of the Faculty of Health Sciences of the Muhammadiyah University of Palangka Raya. This study used 3 (three) media used to identify the potential of microorganisms for biofertilizer from palm oil liquid waste by calculating the number of bacterial colonies namely Carboxy Methyl Cellulose (CMC), pykovskaya media and Yeast Extract Mannitol Agar (Yema) media. The results of the analysis also showed that PKS liquid waste contained potential microorganisms found were phosphate solvent bacteria, cellulite fungi and nitrogen-fixing bacteria with an average bacterial colony of 1,700,000 cells/mL. Potential microorganisms from the proportion obtained showed the ability of bacteria found in PKS liquid waste to degrade the oil. The first and second samples of bacterial forms identified were in the form of bacilli and were gram-positive bacteria, while the samples of the three bacteria were in the form of coccus and the bacteria were gram-negative bacteria.

Co-digestion of palm oil mill effluent for enhanced biogas production in a solar assisted bioreactor: Supplementation with ammonium bicarbonate

2020 ◽  
Vol 706 ◽  
pp. 136095 ◽  
Author(s):  
B.K. Zaied ◽  
Mohd Nasrullah ◽  
Md. Nurul Islam Siddique ◽  
A.W. Zularisam ◽  
Lakhveer Singh ◽  
...  
Keyword(s):  
Palm Oil ◽  
Biogas Production ◽  
Ammonium Bicarbonate ◽  
Palm Oil Mill Effluent ◽  
Palm Oil Mill

scholarly journals Automation of temperature sensor in biogas production from palm oil mill effluent (POME)

2018 ◽  
Vol 1116 ◽  
pp. 042015 ◽  
Author(s):  
Irvan ◽  
T Husaini ◽  
E Simanungkalit ◽  
R Sidabutar ◽  
B Trisakti
Keyword(s):  
Palm Oil ◽  
Temperature Sensor ◽  
Biogas Production ◽  
Palm Oil Mill Effluent ◽  
Palm Oil Mill

Thermophilic Anaerobic Contact Digestion of Palm Oil Mill Effluent

1985 ◽  
Vol 17 (2-3) ◽  
pp. 155-166 ◽  
Author(s):  
A. Ibrahim ◽  
B. G. Yeoh ◽  
S. C. Cheah ◽  
A. N. Ma ◽  
S. Ahmad ◽  
...  
Keyword(s):  
Palm Oil ◽  
Liquid Waste ◽  
Palm Oil Mill Effluent ◽  
Organic Load ◽  
Anaerobic Digesters ◽  
Effective System ◽  
Contact Digestion ◽  
Palm Oil Mill ◽  
High Level ◽  
Anaerobic Pretreatment

The palm oil industry is one of the major agro-based industries in Malaysia whose production accounts for more than 90% of the world export. The industry, however, also generates enormous quantities of liquid waste with high organic load causing serious pollution problems. In view of the high level of organics, anaerobic pretreatment is usually practised prior to aerobic breakdown. Most of the anaerobic digesters installed at the mills are currently operated under mesophilic conditions. However, the inherently high temperature of the effluent suggests that thermophilic digestion would bring about a much more effective system. This paper reports on results obtained from a pilot plant study on thermophilic anaerobic contact digestion of palm oil mill effluent which has been conducted and includes a microbiological study associated with the investigation.

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