scholarly journals TREATMENT OF POME BY PILOT PLANT ANAEROBIC FLUIDISED BED REACTOR

2010 ◽  
Vol 9 (1) ◽  
pp. 9-18 ◽  
Author(s):  
Abdullah Al-Mamun ◽  
Azni Idris
Keyword(s):  
Ambient Temperature ◽  
Pilot Plant ◽  
Loading Rate ◽  
Pilot Scale ◽  
Fluidised Bed ◽  
Detention Time ◽  
Start Up ◽  
Palm Oil Mill ◽  
Fluidised Bed Reactor ◽  
Fast Settling

A pilot scale anaerobic fluidised bed reactor (AnFBR) of 2000 L capacity was studied to determine its performance to treat palm oil mill effluent (POME). The pilot plant was operated at ambient temperature with diluted POME as substrate. It took 17 days for the start-up of the reactor with pre-seeded sand media. The AnFBR was capable to remove a large portion of organics at relatively shorter retention time. Maximum and minimum COD removal efficiency of 85% and 65% were attained at a loading rate of 4.0 and 13.8 kgCOD/m3.d. BOD and TSS removal rates varied within the range of 64% - 91% and 68% - 89%, respectively. The AnFBR exhibited low sludge production with lower sludge volume indices (SVI). Maximum and minimum effluent indices for the effluent were 35 mL/g and 11 mL/g, respectively. Low SVI values indicated that, anaerobic fluidised bed reactors generate less sludge with fast settling properties. Promising performance at ambient temperature and for detention time shorter than the present practices supported the possibility of AnFBR to treat POME to meet the new requirement set by the DOE Malaysia.

Neutralization of Acid Mine Water with Calcium Carbonate

1994 ◽  
Vol 29 (9) ◽  
pp. 285-296 ◽  
Author(s):  
J. P. Maree ◽  
P. du Plessis
Keyword(s):  
Calcium Carbonate ◽  
Contact Time ◽  
Lower Cost ◽  
Free Acid ◽  
Pilot Scale ◽  
Fluidised Bed ◽  
Acid Mine Water ◽  
Ph Values ◽  
Fluidised Bed Reactor ◽  
Low Solubility

Traditionally, lime is used for the neutralization of acidic effluents. Calcium carbonate should be considered as an alternative because of considerations such as lower cost, low solubility at pH values greater than 7 and simple dosing system required. The paper describes a pilot scale study to determine the technical feasibility of neutralising sulphuric acid-rich water using fluidised bed technology. Limestone was utilised completely when testing iron(III)-rich water, but with iron(II)-rich water, coated limestone particles accumulated in the fluidised-bed reactor. About 70% of the limestone was utilised in the case of water containing 600 mg/l iron(II). A contact time of 4 min was sufficient for the neutralization of acid water containing 4 g/l free acid and 580 mg/l iron(III), compared to 40 min when iron(II) replaced iron(III).

Combustion of oil palm stone in a pilot-scale fluidised bed reactor

2011 ◽  
Vol 92 (12) ◽  
pp. 2219-2225 ◽  
Author(s):  
Raja Razuan ◽  
Qun Chen ◽  
Karen N. Finney ◽  
Nigel V. Russell ◽  
Vida N. Sharifi ◽  
...  
Keyword(s):  
Oil Palm ◽  
Pilot Scale ◽  
Fluidised Bed ◽  
Fluidised Bed Reactor

Experimental and Analytical Study on the Operation Characteristics of the AHAT System

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
Hidefumi Araki ◽  
Tomomi Koganezawa ◽  
Chihiro Myouren ◽  
Shinichi Higuchi ◽  
Toru Takahashi ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Ambient Temperature ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
Pilot Plant ◽  
Temperature Effects ◽  
Operational Flexibility ◽  
Start Up ◽  
Air Turbine ◽  
Load Characteristics

Operational flexibility, such as faster start-up time or faster load change rate, and higher thermal efficiency, have become more and more important for recent thermal power systems. The advanced humid air turbine (AHAT) system has been studied to improve operational flexibility and thermal efficiency of the gas turbine power generation system. Advanced humid air turbine is an original system which substitutes the water atomization cooling (WAC) system for the intercooler system of the HAT cycle. A 3 MW pilot plant, which is composed of a gas turbine, a humidification tower, a recuperator and a water recovery system, was built in 2006 to verify feasibility of the AHAT system.In this paper, ambient temperature effects, part-load characteristics and start-up characteristics of the AHAT system were studied both experimentally and analytically. Also, change in heat transfer characteristics of the recuperator of the 3 MW pilot plant was evaluated from Nov. 2006 to Feb. 2010. Ambient temperature effects and part-load characteristics of the 3 MW pilot plant were compared with heat and material balance calculation results. Then, these characteristics of the AHAT and the combined cycle (CC) systems were compared assuming they were composed of mid-sized industrial gas turbines.The measured cold start-up time of the 3 MW AHAT pilot plant was about 60 min, which was dominated by the heat capacities of the plant equipment. The gas turbine was operated a total of 34 times during this period (Nov. 2006 to Feb. 2010), but no interannual changes were observed in pressure drops, temperature effectiveness, and the overall heat transfer coefficient of the recuperator.

Pilot-scale culture ofCoffea arabica in a novel loop fluidised bed reactor

1995 ◽  
Vol 43 (2) ◽  
pp. 171-183 ◽  
Author(s):  
Beno�t Dubuis ◽  
Oemer M. Kut ◽  
Jiri E. Prenosil
Keyword(s):  
Pilot Scale ◽  
Fluidised Bed ◽  
Fluidised Bed Reactor

scholarly journals KAJIAN AWAL PEMBUATAN PUPUK CAIR ORGANIK DARI EFFLUENT PENGOLAHAN LANJUT LIMBAH CAIR PABRIK KELAPA SAWIT (LCPKS) SKALA PILOT

2014 ◽  
Vol 3 (1) ◽  
pp. 32-37
Author(s):  
Fristyana Sosanty Lubis, Irvan ◽  
Dedy Anwar ◽  
Basril Amirza Harahap ◽  
Bambang Trisakti
Keyword(s):  
Loading Rate ◽  
Organic Liquid ◽  
Oxygen Demand ◽  
Total Suspended Solid ◽  
Total Solid ◽  
Pilot Scale ◽  
Suspended Solid ◽  
Palm Oil Mill ◽  
Materials Used ◽  
Effective Microorganism

The objective of this study is to design an organic liquid fertilizer manufacturing process from palm oil mill effluent (POME) at pilot scale. Materials used were effluent from further processing of biogas fermentation from POME and starter (mixture of molasses, yeast and effective microorganism). Variables measured were total solid (TS), volatile solid (VS), total suspended solid (TSS), volatile suspended solid (VSS), and chemical oxygen demand (COD), in addition, analysis content of liquid fertilizers was performed. The research consisted of production of starters and fermentation process. Loading rate was started from hydraulic retention time (HRT) 2,500 days and bioreactor performance was observed at HRT 100, 90 and 80 days. The results showed that COD concentration of bioreactor effluent decreased from 8,600 to 1,580 mg/l and from analysis content, liquid fertilizers are composed of nitrogen 0.14%, P2O5 0.05%, K2O 0.07%, MgO 0.01%, CaO 0.001mg/l, C-Organic 0,12%, and C/N Ratio 0.86.

The influence of variable organic loading on the start-up of an anaerobic fluidised bed reactor

1986 ◽  
Vol 8 (7) ◽  
pp. 521-524 ◽  
Author(s):  
S. M. Stronach ◽  
T. Rudd ◽  
J. N. Lester
Keyword(s):  
Fluidised Bed ◽  
Organic Loading ◽  
Start Up ◽  
Fluidised Bed Reactor
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