Effect Of Biochemical Composition Research Articles

The effect of biochemical composition on the renewable crude oil produced from hydrothermal liquefaction of biosolids

The accumulation of biosolids has caused significant harmful pollutants and negatively impacted nearby ecosystems and communities, which requires immediate management and regulation. Biosolids are potentially a highly productive source of renewable crude. Hydrothermal liquefaction is a promising technique to convert biosolids into renewable crude oil. However, challenges exist with optimising the HTL of biosolids, such as identifying biosolids composition and the resultant effect on the produced renewable crude. This work aims to develop and modify methods to analyse biosolids' composition and quantify the effect of biosolids' composition and specific reaction conditions on product distributions derived from HTL. Biosolids with varying compositions were processed using HTL in a batch reactor under controlled operating conditions. The analysis of the biosolids’ composition showed that few biosolids samples are close to the composition of biomass content when compared using the Van Krevelen diagram. The results also show that those biosolids with higher lipid and protein content exhibit an increase in the renewable crude yield with a larger content of low-boiling point components. However, biosolids with higher carbohydrate and insoluble lignin content produce lower renewable crude oil yield with a higher content of high-boiling point components and an increased mass fraction of solid residue.

Effects of biochemical composition on hydrogen production by biomass gasification

Gasification of cellulose, hemicellulose, lignin and three types of real biomass was conducted using an updraft fixed-bed reactor to investigate the effects of temperature (in the range of 920–1220 °C) on the yield and chemical composition of the produced syngas. The experimental results showed that the gasification products of cellulose and hemicellulose were similar to each other, but they were different from those of lignin; it is likely due to the difference in volatile compounds. Cellulose and hemicellulose can be gasified more rapidly producing more CO and CH4 and less H2 and CO2 than lignin, and the real biomass fell in between. Biomass with more lignin produced more hydrogen than others. These differences were resulted from the relative amount of lignin, hemicellulose, and cellulose in the biomass. Linear superposition method was used to simulate the gasification characteristics of real biomass and it showed a certain linear correlation between the simulation and experimental data.

A statistical analysis of the effect of biochemical composition and morphometric indices on the mechanical properties of the human cardiac coronary arteries relative to age

A statistical analysis of the effect of biochemical composition and morphometric indices on the mechanical properties of the human cardiac coronary arteries relative to age