@article{CHOKESAWATANAKIT_JUTAKRIDSADA_KAMWILAISAK_2021, place={Bangkok, Thailand}, title={Sustainable valorization of sugarcane leaves for succinic acid and biochar production}, volume={31}, url={https://jmmm.material.chula.ac.th/index.php/jmmm/article/view/1048}, DOI={10.55713/jmmm.v31i2.1048}, abstractNote={<p align="left"><span style="color: #000000;"><span style="font-size: medium;"><span style="font-size: small;"><span lang="en-US">The leaves of sugarcane (Saccharum officinarum) are agricultural waste that is burnt before harvesting.</span></span> <span style="font-size: small;"><span lang="en-US">This project aims to find an alternative way to increase the value of sugarcane leaves and decrease air pollution by using the leaves as raw material to produce succinic acid and biochar. Reducing sugars </span></span><span style="font-size: small;"><span lang="en-US">were extracted from the leaves by H</span></span><sub><span style="font-size: small;"><span lang="en-US">2</span></span></sub><span style="font-size: small;"><span lang="en-US">SO</span></span><sub><span style="font-size: small;"><span lang="en-US">4 </span></span></sub><span style="font-size: small;"><span lang="en-US">hydrolysis. The sugars were then fermented by </span></span><span style="font-size: small;"><span lang="en-US"><em>Yarrowia </em></span></span><span style="font-size: small;"><span lang="en-US"><em>lipolytica</em></span></span><span style="font-size: small;"><span lang="en-US"> TBRC 4417 to produce succinic acid. The solid residue was used as the raw material for biochar</span></span> <span style="font-size: small;"><span lang="en-US">production by pyrolysis. The effects of pyrolysis temperature (350, 400, and 450℃) and nitrogen gas</span></span> <span style="font-size: small;"><span lang="en-US">flow rate (5, 10, and 15 L</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">min</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US">) on the specific surface area of biochar were determined. The adsorption</span></span><span style="font-size: small;"><span lang="en-US"> capacity of mixed nitrogen, phosphorus, and potassium compound solution at various concentrations </span></span><span style="font-size: small;"><span lang="en-US">by biochar was also investigated. The hydrolysis condition was at 1%v/v of H</span></span><sub><span style="font-size: small;"><span lang="en-US">2</span></span></sub><span style="font-size: small;"><span lang="en-US">SO</span></span><sub><span style="font-size: small;"><span lang="en-US">4</span></span></sub><span style="font-size: small;"><span lang="en-US">, 100 g</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">L</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US"> of sugarcane</span></span> <span style="font-size: small;"><span lang="en-US">leaves, and hydrolysis time of 60 min. The hydrolysate yielded sugar monomers at a concentration of</span></span> <span style="font-size: small;"><span lang="en-US">ca. 13.00 g</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">L</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US"> of xylose and 2.00 g</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">L</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US"> of glucose. The fermentation process of extracted reducing</span></span> <span style="font-size: small;"><span lang="en-US">sugar from sugarcane leaves by </span></span><span style="font-size: small;"><span lang="en-US"><em>Yarrowia lipolytica</em></span></span><span style="font-size: small;"><span lang="en-US"> TBRC 4417 was studied at 30℃ for 84 h. with</span></span> <span style="font-size: small;"><span lang="en-US">120 rpm shaking. It was found that </span></span><span style="font-size: small;"><span lang="en-US"><em>Yarrowia lipolytica</em></span></span><span style="font-size: small;"><span lang="en-US"> TBRC 4417 produced succinic acid in glucose</span></span><span style="font-size: small;"><span lang="en-US">, </span></span><span style="font-size: small;"><span lang="en-US">mixed glucose and xylose, and extracted reducing sugars. The maximum succinic acid yield of </span></span><span style="font-size: small;"><span lang="en-US">0.061 g succinic acid /g sugar consumption was obtained. For biochar production, the maximum specific</span></span> <span style="font-size: small;"><span lang="en-US">surface area of 301.19 m</span></span><sup><span style="font-size: small;"><span lang="en-US">2</span></span></sup><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">g</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US"> was found at a pyrolysis temperature of 400℃ and the N</span></span><sub><span style="font-size: small;"><span lang="en-US">2</span></span></sub><span style="font-size: small;"><span lang="en-US"> gas flow rate of </span></span><span style="font-size: small;"><span lang="en-US">10 L</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">min</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US">. The maximum adsorption capacity of the mixed solution was 28.45 wt%. The adsorption capacity of biochar was N>P>K at a total concentration of 100 mg</span></span><span style="font-family: Symbol, serif;"><span style="font-size: small;"><span lang="en-US"></span></span></span><span style="font-size: small;"><span lang="en-US">L</span></span><sup><span style="font-size: small;"><span lang="en-US">-1</span></span></sup><span style="font-size: small;"><span lang="en-US">. This study demonstrates the agricultural waste’s potential value as a useful feedstock for the biological generation of succinic acid and biochar.</span></span></span></span></p>}, number={2}, journal={Journal of Metals, Materials and Minerals}, author={CHOKESAWATANAKIT, Nuttaporn and JUTAKRIDSADA, Pasakorn and KAMWILAISAK, Khanita}, year={2021}, month={Jun.}, pages={46–53} }