scholarly journals Multiphase CFD modelling and PIV validation of a UASB reactor

2019 ◽  
Author(s):  
Camila D’Bastiani ◽  
Jéferson Luis Alba ◽  
Gabriel Tomazzoni Mazzarotto ◽  
Severino Rodrigues de Farias Neto ◽  
Lademir Luiz Beal ◽  
...  
Keyword(s):  
Uasb Reactor ◽  
Cfd Modelling ◽  
Multiphase Cfd

Advanced Multiphase CFD Modelling to Understand Impact of Undersea Oil Spill

2016 ◽  
Author(s):  
Krishnaswamy Nandakumar ◽  
Abhijit Rao ◽  
Kalliat T. Valsaraj
Keyword(s):  
Oil Spill ◽  
Cfd Modelling ◽  
Multiphase Cfd

Multiphase CFD modelling for enclosure fires—A review on past studies and future perspectives

2021 ◽  
Author(s):  
Anthony Chun Yin Yuen ◽  
Ivan Miguel De Cachinho Cordeiro ◽  
Timothy Bo Yuan Chen ◽  
Qian Chen ◽  
Hengrui Liu ◽  
...  
Keyword(s):  
Future Perspectives ◽  
Cfd Modelling ◽  
Multiphase Cfd

Multiphase CFD Modelling of Mineral Separators Performance: Validation Against Tomography Data

2016 ◽  
Vol 70 (2) ◽  
pp. 323-340 ◽  
Author(s):  
Teja Reddy Vakamalla ◽  
Balraju Vadlakonda ◽  
V. Asha Kumari Aketi ◽  
Narasimha Mangadoddy
Keyword(s):  
Cfd Modelling ◽  
Multiphase Cfd ◽  
Performance Validation ◽  
Tomography Data

An investigation of multiphase CFD modelling of a lateral sloshing tank

2009 ◽  
Vol 38 (2) ◽  
pp. 183-193 ◽  
Author(s):  
Bernhard Godderidge ◽  
Stephen Turnock ◽  
Mingyi Tan ◽  
Chris Earl
Keyword(s):  
Cfd Modelling ◽  
Multiphase Cfd

CFD MODELLING AND VALIDATION OF LOSS COEFFICIENTS FOR PENSTOCK BIFURCATIONS IN HYDROPOWER SCHEMES

2018 ◽  
Author(s):  
Kasturi Sukhapure ◽  
Alan Burns ◽  
Tariq Mahmud ◽  
Jake Spooner
Keyword(s):  
Cfd Modelling ◽  
Loss Coefficients

APLIKASI PROSES DIGESTASI ANAEROBIK LUMPUR BIOLOGI INSTALASI PENGOLAHAN AIR LIMBAH INDUSTRI KERTAS

2014 ◽  
Vol 4 (02) ◽  
Author(s):  
Rina S. Soetopo ◽  
Sri Purwati ◽  
Henggar Hardiani ◽  
Mukharomah Nur Aini ◽  
Krisna Adhitya Wardhana
Keyword(s):  
Oxygen Demand ◽  
Total Solid ◽  
Pilot Scale ◽  
Organic Content ◽  
Solid Content ◽  
Uasb Reactor ◽  
Anaerobic Sludge ◽  
Organic Loading ◽  
Total Solid Content ◽  
Average Value

A continuous pilot scale study has been conducted to investigate the effectiveness of anaerobic digestion of biological sludge. The sludge has a total solid content of 0.53% - 1.1%, pH of 7.20 to 7.32. Its organic content is about 97 %, The research were conducted in two stages, which are acidification (performed in 3 m3 the Continously Stirred Tank Reactor/CSTR at pH of 5.5 to 6.0) and methanation (performed in 5 m3 the Up Flow Anaerobic Sludge Blanket/UASB reactor at pH 6.5 to 7.0). The retention time (RT) was gradually shortened from 6 days to 1 day for acidification and from 8 days to 2 days for methanation. The results showed that operating the CSTR at the RT of 1 day and the organic loading of 8.23 g Volatile Solid (VS)/m3.day could produce Volatile Fatty Acid (VFA) at an average value of 17.3 g/kg VS.day. Operating the UASB reactor at the RT of 2 days and the organic loading (Chemical Oxygen Demand/COD) of 2.4 kg COD/m3.day could produce biogas at an average value of 66.3 L/day, with an average methane content of 69.9%, methane rate of 0.17 L CH4/g COD reduction or 19.06 L CH4/kg VS. Furthermore, methanation could reduce COD at an average value of 51.2 %, resulting in the effluent average value of COD filtrate and COD total of 210.1 mg/L and 375.2 mg /L, respectively.Keywords: acidification, methanation, CSTR, UASB, biogas ABSTRAKPercobaan digestasi anaerobik lumpur IPAL biologi industri kertas secara kontinyu skala pilot telah dilakukan di industri kertas dengan tujuan mengkaji efektivitas proses digestasi anaerobik dalam mengolah lumpur tersebut. Lumpur yang digunakan memiliki total solids sekitar 0,53% – 1,1%, pH netral (7,20 – 7,32) dengan komponen utama senyawa organik sekitar 97%. Percobaan dilakukan dalam dua tahap yaitu asidifikasi dalam reaktor CSTR berkapasitas 3 m3 pada pH 5,5 – 6,0 dan metanasi dalam reaktor UASB berkapasitas 5 m3 pada pH 6,5 – 7,0. Percobaan dilakukan dengan waktu retensi yang dipersingkat secara bertahap dari 6 hari ke 1 hari untuk proses asidifikasi dan dari 8 hari ke 2 hari untuk proses metanasi. Hasil percobaan menunjukkan bahwa pengoperasian reaktor CSTR dengan waktu retensi 1 hari dan beban organik 8,3 g VS/m3.hari dapat menghasilkan VFA rata-rata 17,3 g/kg VS.hari dengan kisaran 8,36 – 30,59 g/kg VS.hari, sedangkan pengoperasian reaktor UASB pada waktu retensi 2 hari dan beban organik 2,4 kg COD/m3.hari dapat menghasilkan biogas rata-rata 66,3 L/hari dengan kadar metana rata-rata 69,9% atau 0,17 L CH4/g COD reduksi atau 19,06 L CH4/kg VS. Selain itu proses metanasi dapat menurunkan COD terlarut rata-rata 51,2%, dengan konsentrasi efluen COD terlarut  rata-rata 210,1 mg/L dan COD total rata-rata 375,2 mg/L.Kata kunci: asidifikasi, metanasi, CSTR, UASB, biogas

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