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Register a new userStudying Temperature and Loading Rate Effect on Anaerobic Digester Production of Biogas
دراسة تأثير درجة الحرارة و معدل التزويد بالفضلات على إنتاجية الهاضم اللاهوائي للغاز الحيوي
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موضوع البحث معالجة العوامل المؤثرة في عمل الهواضم الخاصة بإنتاج الغاز الحيوي. و التركيز على تحديد درجة الحرارة المثلى و معدل التزويد الأنسب من أجل تحقيق معدلات إنتاج كبيرة للغاز في الهاضم الحيوي من النوع المضغوط بالماء (النموذج الصيني) و بنظام التدفق المستمر. و قد تم عرض نتائج البحث على شكل جداول و مخططات بيانية في نهاية هذا البحث.
This research discusses the affecting factors of biogas production in the digester, to define the optimal temperature and suitable loading rate to achieve high digester biogas production. The research focuses on the water compressed continuous flow digester (chines model), and the results is presented and illustrated in suitable tables and curves.
References used
AL SEADI , T , 2008 – Biogas Handbook , 126 p
VOGELI , Y. , LOHRI, R. , GALLARDO , A. , DIENER , S . , ZUBRUGG, C – 2014 – Anaerobic Digestion Of Bio waste In Developing Countries , 137 p
ياخور , يوسف , 2004 – إنتاج الغاز الحيوي من المخلفات البشرية و الحيوانية . منشورات جامعة البعث , سوريا , 48
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This research aims to decrease the cost of last production stages
through decreasing the cost of potential casing repair by avoiding the
problems that casing string may be exposed to. Such problems are
caused by the temperature effect of salt dril
ling fluids as well as other
fluids normally existed in the annular behind casing at the nonecemented
intervals.
Poultry litter is an organic waste in Syria which can be a source of clean
energy if treated anaerobically. This research aimed to investigate the effect of
mechanical pretreatment of poultry litter in producing biogas and methane.
Experiments wer
e performed in units of fermentation laboratory on samples
ground spread over parts diameters 1 mm, 3 mm, and 10 mm at at 37°C
temperature, for a period of 42 days and compared with untreated samples
mechanically.
Pastrami, manufactured from beef and abdominal fat and of a ratio of 3 meat to 1 fat,
was stored under refrigeration at (4±2 °C) and storage times (0, 15, 30, 60, 120, and 180
days). The effects of storage times on the most important chemical, micr
obiological and
sensory properties of pastrami were investigated.
The results of chemical analyzes showed that the studied pastrami conformed to the
Syrian Standards in terms of the proportion of salt and fat content, and it nearly conformed
to the standards in terms of humidity. The results also showed a slight decrease in the
percentage of moisture, fat and protein, and an increase in each of the acidity, proportion of
total volatile nitrogen, soluble nitrogen and peroxide value in pastrami with the progress of
the storage period at the temperature degree (4±2 °C). The microbial tests showed that
pastrami is free from some sickening organisms especially salmonella and E. coli. It also
showed that the census of the aerobic bacteria, yeasts and fungi was within the limits of the
Syrian standards. The results showed deterioration in the microbial properties of stored
pastrami with the progress of time; pastrami became invalid from a microbial point of
consumption after two months of storage as a result of the big number of aerobic bacteria,
yeasts and fungi. The sensory tests showed deterioration in the organoleptic characteristics
of storage with the progress of time, the deterioration was clear after two months of
storage; pastrami became unacceptable in terms of taste, color, smell and texture.
Effect of organic and bio fertilizers (Azotobacter and phosphate solubilizing
bacteria) on production of potatoes and some soil properties was studied in
Tartous.
The experiment consisted of 4 treatments (control soil, soil+manure, soil+
bioferti
lizer and soil+manure+biofertilizer) each replicated four time, for 2004
and 2005 seasons.
Total N, available P, available K, and organic matter in soil were
determined.
Significant increases were observed in most of the inoculated and organic
fertilized treatments compared with the control. However, the treatment
(soil+manure+biofertilizer) was the best and showed significant increases in
potato yield compared with other treatments especially in the next season.
However, the second season was better in yield increase in all treatments
than the first seacon.
Aluminum Alloy 6063 is used widely in extrusion industry for
building and automobile applications. Aluminum billet is
manufactured usually by vertical continuous casting technique and direct water cooling. 5 different casting temperatures 660, 680,
700, 720, 740Cº, besides 5 different casting speeds 100, 112, 125, 138, 150 mm/min to control cool water feeding are chosen. It has noticed that the increase of casting temperature and decreasing of casting speed has a good effect on improving billet quality which contribute later on improving the hardness and mechanical properties of extruded aluminum profiles.
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