scholarly journals Effect of Different Temperatures on the Rearing of 1st and 2nd Instar Larvae of the Cupreous Chafer, Anomala cuprea (HOPE) (Coleoptera: Scarabaeidae) in Decomposed Cow-Dung under Laboratory Conditions

1995 ◽  
Vol 30 (3) ◽  
pp. 401-406 ◽  
Author(s):  
Rabbani Khalilur BHUIYAN ◽  
Jojiro NISHIGAKI
Keyword(s):  
Cow Dung ◽  
Anomala Cuprea ◽  
Laboratory Conditions ◽  
Different Temperatures ◽  
Cupreous Chafer

scholarly journals Heat Exchanger for Bio-Digester under Thermophilic Range

2019 ◽  
Vol 5 ◽  
pp. 79-88
Author(s):  
Prajwal Sapkota ◽  
Laxman Poudel
Keyword(s):  
Heat Exchanger ◽  
Anaerobic Digestion ◽  
Heat Exchangers ◽  
Heating System ◽  
Gas Production ◽  
Cow Dung ◽  
Digestion Rate ◽  
Digestion Process ◽  
Different Temperatures ◽  
Long Time

Bio-gas has been one of the sources of renewable energy and has been used from long time. It is produced by the anaerobic digestion or decomposition of organic compounds and has different process. The digestion process is carried out by bacteria present in the waste and it is highly dependent on the bacteria which work differently on different temperatures. The rate of anaerobic digestion is highest at hemophilic temperature (55°C). Similarly, it is moderate at mesophilic temperature (35°C) and is lowest at psychrophilic (below 20°C). Thus, to attain the highest digestion rate a thermophilic heating system has beend eveloped. The heating system uses five heat exchangers to heat the influent at digester which is of 35m3 volume, to maintain temperature at 56°C. The volume of bio-gas production from this system which uses cow dung as digestingmaterial is about 28 m3 per day.

scholarly journals Influence of Pyrolysis Temperature on Product Distribution and Characteristics of Anaerobic Sludge

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 79
Author(s):  
Muhammad Usman Hanif ◽  
Mohammed Zwawi ◽  
Sergio C. Capareda ◽  
Hamid Iqbal ◽  
Mohammed Algarni ◽  
...  
Keyword(s):  
Pyrolysis Temperature ◽  
Product Distribution ◽  
Biofuel Production ◽  
Thermochemical Conversion ◽  
Anaerobic Sludge ◽  
Cow Dung ◽  
High Heating Value ◽  
Bio Oil ◽  
Different Temperatures ◽  
Combustible Gases

Pyrolysis of anaerobically digested sludge can serve as an efficient biomass for biofuel production. Pyrolysis produces products like char, bio-oil, and combustible gases by thermochemical conversion process. It can be used for sludge treatment that decreases sludge disposal problems. Sludge produced from anaerobic co-digestion (microalgae, cow dung, and paper) waste has high carbon and hydrogen content. We investigated the candidacy of the anaerobic sludge having high heating value (HHV) of 20.53 MJ/kg as a reliable biomass for biofuels production. The process of pyrolysis was optimized with different temperatures (400, 500, and 600 °C) to produce high quantity and improved quality of the products, mainly bio-oil, char, and gas. The results revealed that with the increase in pyrolysis temperature the quantity of char decreased (81% to 55%), bio-oil increased (3% to 7%), and gas increased (2% to 5%). The HHV of char (19.2 MJ/kg), bio-oil (28.1 MJ/kg), and gas (18.1 MJ/kg) were predominantly affected by the amount of fixed carbon, hydrocarbons, and volatile substance, respectively. The study confirmed that the anaerobic sludge is a promising biomass for biofuel production and pyrolysis is an efficient method for its safe disposal.

scholarly journals Observations on the Embryonic Development of Trichuris sylvilagi (Nematoda, Trichuridae) under Laboratory Conditions

Zoodiversity ◽  
2021 ◽  
Vol 55 (4) ◽  
pp. 343-350
Author(s):  
V. Yevstafieva ◽  
V.  Melnychuk ◽  
L.  Nagorna ◽  
V.  Stybel ◽  
B.  Gutyj ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Growth And Development ◽  
Lepus Europaeus ◽  
European Hare ◽  
Laboratory Conditions ◽  
Different Temperatures ◽  
Simultaneous Decrease ◽  
Favorable Temperature ◽  
Zygote Stage

In the present study, we observed in vitro the rate and stages of exogenous development of the nematode Trichuris sylvilagi Tiner, 1950 isolated from the European hare, Lepus europaeus. The viability of eggs and embryos at different temperatures was investigated. It was found that the most favorable temperature for embryonic development of the species was 30 °C, with the formation of 88.67 % of viable eggs with a motile larva in 20 days at laboratory conditions. With a decrease in temperature to 20 °C, the embryogenesis occurred in 32 days. The viability of eggs cultured at 20 °C decreased: 68.0 % of eggs reached larval stage, and 32.0 % of eggs died. At 10 °C eggs did not develop to infective stage. On the 32nd day of cultivation at 10 °C, 27.33 % of eggs remained at the zygote stage, 52.0 % at the stage of blastomere cleavage and formation, and 20.67 % died. Embryogenesis was characterized by metric changes in egg parameters. At optimal temperature, the growth and development of eggs was accompanied by an increase in the egg and plugs' width with a simultaneous decrease in their length, as well as with thinning of the shell

scholarly journals Effects of different temperatures on the demography of pistachio green stink-bug, Brachynema germari Kolenati (Hemiptera: Pentatomidae), under laboratory conditions

2019 ◽  
Vol 78 (4) ◽  
pp. 29-36
Author(s):  
Amir Yazdanpanah ◽  
Gadir Nouri-Ganbalani ◽  
Jabraeil Razmjou ◽  
Mehdi Basirat ◽  
Seyed Ali-Asghar Fathi
Keyword(s):  
Stink Bug ◽  
Laboratory Conditions ◽  
Different Temperatures ◽  
Green Stink Bug
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