Culture of PRJ-1 Demulsifying Bacteria and Performance Evaluation

2011 ◽  
Vol 356-360 ◽  
pp. 2055-2059
Author(s):  
Qing Wang Liu ◽  
Yong Kun Zhang ◽  
Xu Dong Lei ◽  
Yong Hui Zhang
Keyword(s):  
Performance Evaluation ◽  
Crude Oil ◽  
Production Cost ◽  
Carbon Sources ◽  
Industrial Scale ◽  
Waste Oil ◽  
Cell Concentrations ◽  
And Performance ◽  
Water Cut ◽  
Demulsification Efficiency

Bio-demulsifier has not been applied in industrial scale due to its production cost. In order to reduce the production cost and improve the efficiency of demulsification, cheap materials such as oilfield sludge, workshop waste oil and edible waste oil were used in experiments as carbon sources to culture PRJ-1 demulsifying bacteria. As a result, cell concentrations of 5.4g/L, 3.7g/L and 4.2g/L were gotten, which were higher than the concentration of 2.6g/L cultivated by using paraffin. PRJ-1 demulsifying bacteria were used to prepare the demulsifying solution with a concentration of 10g/L, which was used in the demulsification experiment on Liaohe crude oil with a water cut of 80%. With 100 ml/L being added into the crude oil, the demulsification efficiency at 12h reached 91%, which was higher than that of 100mg/L chemical demulsifier. Demulsification efficiency of 96% can be achieved by using the combination of 60ml/L demulsifying bacteria and 40mg/L chemical demulsifier, furthermore, the demulsifying speed was higher and dehydrated water was clearer.

Combustion and performance evaluation of a diesel engine fueled with biodiesel produced from soybean crude oil

2009 ◽  
Vol 34 (12) ◽  
pp. 2706-2713 ◽  
Author(s):  
D.H. Qi ◽  
L.M. Geng ◽  
H. Chen ◽  
Y.ZH. Bian ◽  
J. Liu ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Diesel Engine ◽  
Crude Oil ◽  
And Performance

scholarly journals Development and Performance Evaluation of a Spring-Loaded Hand Operated Maize Sheller with Variable Mechanisms

2018 ◽  
Vol 15 ◽  
pp. 44-52 ◽  
Author(s):  
R. Segun Bello ◽  
C. Fabian
Keyword(s):  
Performance Evaluation ◽  
Moisture Content ◽  
Production Cost ◽  
Output Capacity ◽  
Corn Cobs ◽  
Machine Performance ◽  
Overall Performance ◽  
The Mean ◽  
And Performance ◽  
Mean Kernel

A spring-press, variable mechanism hand operated maize sheller was developed, constructed and tested with corn cobs at 12.6% moisture content, wet basis (w.b) and its shelling performances compared. The machine is lever operated with a spring load-return mechanism and a cob constrictor with changeable shelling mechanisms (spike tooth, rasp bar and star tooth), and a tilted tray for grain collection. The overall dimension of the machine is 520mm x 520mm x 400mm. The machine overall performance is 20.62kg/hr shelling capacity, 85.13% shelling efficiency and 2.13% kernel damage. Comparing the performance of the three shelling mechanisms; rasp bar, spike tooth and star tooth, shelling capacity (16.2, 26.0, 19.67) kg/hr.; shelling efficiency (82.22%, 87.19%, 85.97%); and % kernel damage (0.00, 0.74, 0.51) respectively, the star mechanism has a higher capacity of 26.0kg/hr. The mean kernel damage is higher for star tooth, whereas it is zero for rasp bar. In comparison with conventional hand-palm shelling method (100% shelling efficiency, 13.83kg/hr shelling capacity and 0% kernel damage), the hand operated sheller has a better output capacity, reasonable shelling efficiency but slightly higher kernel damage. By implication, machine performance efficiency does not give a true reflection of how effective a system work until the machine capacity is determined. The sheller ease household shelling maize for consumption with initial low production cost of N13, 100.00 (~$30).

scholarly journals Design and Construction of a Small Scale Sugarcane Juice Extractor

2019 ◽  
pp. 1-8
Author(s):  
N. Oji ◽  
M. A. Gwarzo ◽  
U. S. Mohammed ◽  
I. Abubakar ◽  
J. K. Agunsoye ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Production Cost ◽  
Extraction Efficiency ◽  
Sugarcane Juice ◽  
Small Scale ◽  
Prime Mover ◽  
Scale Level ◽  
Brown Sugar ◽  
And Performance ◽  
Bioethanol Fuel

The production of sugarcane is increasing in Nigeria nowadays. Juice extracted from sugarcane can be used extensively in manufacturing brown sugar, industrial sugar and bioethanol fuel through the process of fermentation; hence, the need to develop a machine that can extract juice from sugarcane effectively. This work involves the design, fabrication and performance evaluation of sugarcane juice extractor. The machine was designed to extract juice from sugarcane at small scale level suitable for small and medium scale sugarcane processors. The prototype machine was designed, fabricated and assembled in the Department of Agricultural and Bio-resources Engineering, Ahmadu Bello University, Zaria. The machine consists of rollers, gears, cane guide, juice collector, frame, and prime mover. The developed machine was evaluated using koma variety of cane and obtained an output capacity of 148.2 kg/h and extraction efficiency of 67.44%, respectively at a speed of 30 rpm. The production cost stood at N 90,000 which is affordable and therefore recommended for small scale processors.

scholarly journals Construction and Performance Evaluation of a Solar Powered Maize Sheller for Rural Farmers

2020 ◽  
Vol 2 (1) ◽  
Author(s):  
M.O Lawal
Keyword(s):  
Performance Evaluation ◽  
Production Cost ◽  
Design Calculation ◽  
Total Production ◽  
The Sun ◽  
Rural Farmers ◽  
Mechanical Part ◽  
And Performance ◽  
Solar Powered ◽  
Selection Of

The objective of this work is to construct a simple and affordable maize shelling machine that is powered by solar energy. The method adopted involves the selection of a direct current (DC) operated motor which consumes less power and is locally available. Based on the available motor, the mechanical part is fabricated to work with the motor. Direct coupling method is adopted between the motor and the mechanical part. The improvement in this work is the introduction of a sustainable and affordable powering method. Design calculation has suggested the use of an 80-watt solar panel. A battery of 18Ah capacity is used as storage to cushion the effect of the intermittent nature of the sun. Test carried out on the sheller shows that it has the ability to shell 17.25 kg of kernel in one hour. It has also been shown that the developed device has an efficiency of 89.61%. The total production cost of this sheller (together with the solar power system) is approximately sixty thousand naira (N60,000.00/$167).

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