The application of an innovative continuous multiple tube reactor as a strategy to control the specific organic loading rate for biohydrogen production by dark fermentation

For the properties of activated sludge studies, three kinds of activated sludge were obtained from continuous hydrogen production reactor. Activated sludge was got under organic loading rate (OLR) of 3, 7 and 25 kgCOD/m3·d condition, respectively. Sedimentation performance and activities of sludge were investigated. When OLR was 3 kgCOD/m3·d, activated sludge showed good sedimentation performance. After 30 minutes sedimentation, the volume of activated sludge in total mixture volume was about 39%. When OLR was 7 and 25kgCOD/m3·d, after 30 minutes sedimentation, the volume of activated sludge in total mixture volume was 80% and 83%, respectively. The increase of biomass is the main reason for increase of sedimentation performance. MLVSS/MLSS of activated sludge was 37.7% and 79.6% under OLR of 3 and 25kgCOD/m3·d condition, therefore, activities of activated sludge was high under high OLR condition. Since sedimentation performance of sludge is high under high OLR condition, hydraulic retention time should controlled carefully in engineering operation.

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Pengaruh Variasi Organic Loading Rate Sampah Buah Jeruk terhadap Produksi Biohidrogen pada Reaktor Kontinu

Jurnal Rekayasa Proses ◽

10.22146/jrekpros.33336 ◽

2016 ◽

Vol 10 (2) ◽

pp. 43

Author(s):

Baruna Sakti Wicaksono Bonanza ◽

Sarto Sarto

Keyword(s):

Alternative Energy ◽

Organic Waste ◽

Loading Rate ◽

Continuous System ◽

Total Solid ◽

Dark Fermentation ◽

Organic Loading Rate ◽

Organic Loading ◽

Orange Waste ◽

Potential Alternative

Biohydrogen is a potential alternative energy generated through the process of dark fermentation of organic waste. This research aims to determine the effect of organic loading rate (OLR) variations of orange waste on biohydrogen production. This research dealt with the production of biohydrogen in the continuous system. The reactor was equipped with circulation and operated anaerobically. The inoculum was taken from the sludge of the biogas installation in Gemah Ripah Fruit Market. Orange waste was used in three variations of organic loading rate (OLR) at 2.2, 2.5, and 3.1 L/day. The results revealed that the daily productions of gas for those OLR are about 15, 35, and 26 L/day respectively. Futhermore, for OLR of 2.5 L/day the total solid decreased from about 8 to 5%. Keywords: Biohydrogen, dark fermentation, orange waste, organic loading rate Biohidrogen merupakan salah satu jenis energi alternatif yang dapat dihasilkan dari proses fermentasi gelap (dark fermentation) sampah organik. Penelitian ini bertujuan untuk mengetahui pengaruh variasi organic loading rate (OLR) sampah buah jeruk terhadap produksi biohidrogen. Pada penelitian ini produksi biohidrogen dilakukan menggunakan sistem kontinu. Reaktor yang digunakan dilengkapi dengan sirkulasi dan dijaga pada kondisi anaerob. Inokulum berasal dari sludge dari instalasi biogas Pasar Buah Gemah Ripah. Substrat yang digunakan adalah buah jeruk, sedangkan variabel yang dipelajari adalah OLR yang divariasikan sebesar 2,2; 2,5; dan 3,1 L/hari. Hasil penelitian menunjukkan bahwa produksi gas untuk OLR tersebut berturut-turut sekitar 15, 35, dan 26 L/hari. Pada OLR 2,5 L/hari, terjadi penurunan total solid dari sekitar 8% menjadi sekitar 5%. Kata kunci: Biohidrogen, dark fermentation, jeruk, organic loading rate

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Effect of Organic Loading Rate and Fill Time on the Biohydrogen Production in a Mechanically Stirred AnSBBR Treating Synthetic Sucrose-Based Wastewater

Applied Biochemistry and Biotechnology ◽

10.1007/s12010-014-1205-7 ◽

2014 ◽

Vol 174 (6) ◽

pp. 2326-2349 ◽

Cited By ~ 4

Author(s):

R. K. Inoue ◽

D. M. F. Lima ◽

J. A. D. Rodrigues ◽

S. M. Ratusznei ◽

M. Zaiat

Keyword(s):

Loading Rate ◽

Biohydrogen Production ◽

Organic Loading Rate ◽

Organic Loading

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Anaerobic biohydrogen production from dairy wastewater treatment in sequencing batch reactor (AnSBR): Effect of organic loading rate

Enzyme and Microbial Technology ◽

10.1016/j.enzmictec.2007.04.007 ◽

2007 ◽

Vol 41 (4) ◽

pp. 506-515 ◽

Cited By ~ 146

Author(s):

S. Venkata Mohan ◽

V. Lalit Babu ◽

P.N. Sarma

Keyword(s):

Wastewater Treatment ◽

Sequencing Batch Reactor ◽

Loading Rate ◽

Batch Reactor ◽

Dairy Wastewater ◽

Biohydrogen Production ◽

Organic Loading Rate ◽

Organic Loading

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Anaerobic Treatment of Polyethylene Terephthalate (PET) Wastewater from Lab to Full Scale

Water Science & Technology ◽

10.2166/wst.1999.0426 ◽

1999 ◽

Vol 40 (8) ◽

pp. 229-236 ◽

Cited By ~ 4

Author(s):

F. Fdz-Polanco ◽

M. D. Hidalgo ◽

M. Fdz-Polanco ◽

P. A. García Encina

Keyword(s):

Polyethylene Terephthalate ◽

Loading Rate ◽

Treatment Plant ◽

Textile Wastewater ◽

Anaerobic Treatment ◽

Cod Removal ◽

Organic Loading Rate ◽

Foam Formation ◽

Organic Loading ◽

Start Up

In the last decade Polyethylene Terephthalate (PET) production is growing. The wastewater of the “Catalana de Polimers” factory in Barcelona (Spain) has two main streams of similar flow rate, esterification (COD=30,000 mg/l) and textile (COD=4000 mg/l). In order to assess the anaerobic treatment viability, discontinuous and continuous experiments were carried out. Discontinuous biodegradability tests indicated that anaerobic biodegradability was 90 and 75% for esterification and textile wastewater. The textile stream revealed some tendency to foam formation and inhibitory effects. Nutrients, micronutrients and alkali limitations and dosage were determined. A continuous lab-scale UASB reactor was able to treat a mixture of 50% (v) esterification/textile wastewater with stable behaviour at organic loading rate larger than 12 g COD/l.d (0.3 g COD/g VSS.d) with COD removal efficiency greater than 90%. The start-up period was very short and the recuperation after overloading accidents was quite fast, in spite of the wash-out of solids. From the laboratory information an industrial treatment plant was designed and built, during the start-up period COD removal efficiencies larger than 90% and organic loading rate of 0.6 kg COD/kg VSS.d (5 kg COD/m3.d) have been reached.

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Performance of an anaerobic baffled reactor (ABR) as a hydrolysis-acidogenesis unit in treating landfill leachate mixed with municipal sewage

Water Science & Technology ◽

10.2166/wst.2000.0253 ◽

2000 ◽

Vol 42 (12) ◽

pp. 115-121 ◽

Cited By ~ 13

Author(s):

B. Wang ◽

Y. Shen

Keyword(s):

Landfill Leachate ◽

Loading Rate ◽

Granular Sludge ◽

Operational Performance ◽

Municipal Sewage ◽

Organic Loading Rate ◽

Stable Operation ◽

Organic Loading ◽

Anaerobic Baffled Reactor ◽

Biological Treatability

A study on the performance of an Anaerobic Baffled Reactor(ABR) as a hydrolysis-acidogenesis unit in treating the mixed wastewater of landfill leachate and municipal sewage in different volumetric ratios was carried out. The results showed that ABR substantially improved the biological treatability of the mixed wastewater by increasing its BOD5/COD ratio to 0.4–0.6 from the initial values of 0.15–0.3. The formation of bar-shaped granular sludge of 0.5–5 mm both in diameter and length with an SVI of 7.5–14.2 ml/g was observed in all compartments of the ABR when the organic loading rate reached 4.71 kgCOD/m3 · d. The effects of the ratios of NH4+-N/COD and COD/TP in mixed wastewater on the operational performance were also studied, from which it was found that a reasonable NH4+-N/COD ratio should be lower than 0.02, and the phosphorus supplement was needed when the volumetric ratio was higher than 4:6 for stable operation of ABR.

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