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- W2118091364 abstract "Algae has become a major research focus in the past few years. Treatments such as pyrolysis, hydrothermal carbonization, hydrothermal liquefaction, hydrothermal gasification are being used to process algae and yield products such as lipids, lipid-rich hydrochar, biocrude, methane and hydrogen. These treatments also produce biochars as a product of thermal decomposition of organic material under limited supply of oxygen at temperatures less than 700C. Biochars have potential for use as a soil amendment, both to improve soil quality and to sequester carbon. Algal biochar used in this study was produced by hydrothermal liquefaction of algae at 350C which was grown at Lawrence Wastewater Treatment Plant using municipal wastewater as the feedstock. This biochar was black in color, very smooth & powdery in texture and tremendously hydrophobic in nature. This study was aimed at extraction and characterization of phosphorus from this organic algal biochar. Since biochars are often used as a mixture with soils and there are no currently established methods for extraction of phosphorus from biochars, various soil P extraction methods were studied and investigated to be used on this biochar. For estimation of total P, acid digestion of biochar with sulphuric acid was attempted, but failed to achieve good digestion. Microwave acid digestion was tried with different combinations of acids, with reverse aqua regia (HCl:HNO3::1:3) working best to digest this algal biochar. Most elements that were analyzed in the biochar, including Ca and P were present in biochar at a higher concentration than in algae. ICP analysis of the digested samples gave a total P content of 7.4±0.58 % by wt. which was 3.2 times the total" @default.
- W2118091364 created "2016-06-24" @default.
- W2118091364 creator A5087123601 @default.
- W2118091364 date "2014-12-31" @default.
- W2118091364 modified "2023-09-27" @default.
- W2118091364 title "Extraction and characterization of phosphorus from organic algal biochar" @default.
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