Jung, Kyung-Won Kim, Kipal Jeong, Tae-Un Ahn, Kyu-Hong 2024-01-20T05:30:27Z 2024-01-20T05:30:27Z 2021-09-03 2016-01 0960-8524 https://pubs.kist.re.kr/handle/201004/124597 The collected roots of Undaria pinnatifida, the main waste in farming sites, accounting for 40-60% of annual production, was pyrolyzed under temperature ranging from 200 to 800 degrees C to evaluate the influence of pyrolysis temperature on biochar properties and phosphate adsorption capacity. It was confirmed that an increase in the pyrolysis temperature led to a decrease of the yield of biochar, while ash content remained almost due to carbonization followed by mineralization. Elemental analysis results indicated an increase in aromaticity and decreased polarity at a high pyrolysis temperature. When the pyrolysis temperature was increased up to 400 degrees C, the phosphate adsorption capacity was enhanced, while a further increase in the pyrolysis temperature lowered the adsorption capacity due to blocked pores in the biochar during pyrolysis. Finally, a pot experiment revealed that biochar derived from waste-marine macroalgae is a potent and eco-friendly alternative material for fertilizer after phosphate adsorption. (C) 2015 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD REMOVAL WATER BIOMASS STRAW Influence of pyrolysis temperature on characteristics and phosphate adsorption capability of biochar derived from waste-marine macroalgae (Undaria pinnatifida roots) Article 10.1016/j.biortech.2015.10.016 1 BIORESOURCE TECHNOLOGY, v.200, pp.1024 - 1028 BIORESOURCE TECHNOLOGY 200 1024 1028 scie scopus 000365811200128 2-s2.0-84948147284 Agricultural Engineering Biotechnology & Applied Microbiology Energy & Fuels Agriculture Biotechnology & Applied Microbiology Energy & Fuels Article REMOVAL WATER BIOMASS STRAW Marine macroalgae Undaria pinnatifida roots Pyrolysis Biochar Phosphate