Biodiesel is an alternative diesel fuel made from renewable biological resources. During the process of biodiesel production, lipase-catalyzed transesterification is a crucial step. However, current techniques using methanol as acyl acceptor have lower enzymatic activity; this limits the application of such techniques in large-scale biodiesel production. Furthermore, the lipid feedstock of curr...

Abstract The soil microbial community (SMC) and organic matter (SOM) are inherently related sensitive to land‐use changes. Microorganisms regulate essential functions that key SOM dynamics, whereas dynamics define the SMC. To expand our understanding of health, we evaluated biological indicators in long‐term (18‐yr) continuous silage corn ( Zea mays L.), soybean [ Glycine max (L.) Merr.], peren...

This experiment is an investigation of used cooking oil as a sustainable and renewable resource for methyl ester production. with more than 95.5% production yield, thermally activated hydrated cement has been carefully discussed as a catalyst in the transesterification of used cooking oil into methyl ester to use waste cement as a heterogeneous catalyst for methyl ester production through elect...

Transesterification of soybean oil catalyzed by combusted oyster shell, which is waste material from shellfish farms, was examined. Powdered oyster shell combusted at a temperature above 700 degrees C, at which point the calcium carbonate of oyster shell transformed to calcium oxide, acted as a catalyst in the transesterification of soybean oil. On the basis of factorial design, the reaction co...

background: cocaine poisoning is known for causing severe clinical effects such as tachycardia, hypertension, agitation and confusion. absence of clinical manifestations in cocaine poisoning is unusual. case report: a 26-year old man, known to be a cocaine addict, declared that he was forced by cocaine dealers to swallow many tablets of cocaine, six hours prior to admission to emergency departm...

The synthesis of fatty acid methyl ester from soybean oil was examined. A microreactor used as a reactor, and the results were compared with those by batch reaction. In reaction experiment, concentration by-product glycerol large when methanol/soybean ratio low, which inhibited mass transfer between methanol oil, result, reduced yield. On other hand, conducted under an emulsion state using micr...

In the present study emission performance of a diesel engine (Lister Petter) was evaluated at different compression ratios and engine loads with soybean methyl ester and its 25%, 50%, 75% blends with diesel fuel at constant speed 1500 rpm. Exhaust emissions included CO, CO2, HC and NOx. The compression ratio and engine load varied from 14 to 20 with an interval 1 and 25 to...

Abstract The objectives of this study were to determine if the level and consistency glyphosate-resistant (GR) horseweed control prior soybean planting can be improved by (i) adding halauxifen-methyl, 2,4-D ester, saflufenacil, metribuzin, or dicamba glufosinate, (ii) increasing rate glufosinate from 500 1,000 g ai ha –1 , (iii) 28% urea ammonium nitrate (UAN) as carrier solution. During a 2-yr...