Recovery of Sugar and Nutrients from Algae and Colocasia esculenta (Taro) Leaves Using Chemical Hydrolysis
department or school: Applied Science, Faculty of
department or school: Non UBC
department or school: Civil Engineering, Department of
data provider: DSpace
identifier citation: Sustainability 14 (24): 16383 (2022)
creator: Dahiya, Swati
creator: Chowdhury, Raja
creator: Kumar, Pradeep
creator: Ghosh, Sanjoy
creator: Srinivasan, Asha
issued: 2025-06-12T15:44:19Z
issued: 2022-12-07
description: Algal biomass and Colocasia esculenta (Taro) leaves are available as waste biomass all over India. These biomasses can be used as renewable and sustainable resources for sugars and nutrients. Recovered nutrients and sugars can be used as cheap raw materials for biofuels and biomaterials production. The hydrolysis of dried algal biomass and Colocasia esculenta (Taro) leaves were investigated using 1%, 2%, and 5% solutions of ferric-chloride, nitric acid, and acetic acid for the reaction times of 30 and 60 min at 121 °C and 103.4 kPa (15 psi). 1% and 2% H₂SO₄ treatments were used as the reference. The solid: liquid ratio was kept at 1:10 for all the experiments. For algal biomass, a 5% acetic acid treatment for 60 min was found to be optimum with a total carbohydrate release of 44.2 mg/g biomass (solubilized monomers-0.82 mg/g of biomass) and N and P solubilization of 1.8 mg total nitrogen/g biomass and 7 mg total phosphorus/g biomass. Moreover, for Colocasia esculenta (Taro) leaves, the maximum carbohydrate yield of 95 mg/g biomass (solubilized monomers-43.6 mg/g of biomass) and nutrient solubilization of 5.02 mg total nitrogen/g biomass was obtained with 5% ferric chloride treatment for 60 min. The results obtained showed that various hydrolyzing agents used in this study acted differently on different types of biomasses. Acetic acid worked best in hydrolyzing the algal biomass, and for the hydrolysis of Taro leaves, ferric chloride and nitric acid were effective. Statistical analysis showed that the chemical concentration was one of the prime factors for releasing P from algal biomass. For carbohydrate release from Taro leaves, either time or concentration, or both, were the prime factors that affected the carbohydrate release.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/91339
note: Citation: Dahiya, S.; Chowdhury, R.;Kumar, P.; Ghosh, S.; Srinivasan, A.Recovery of Sugar and Nutrientsfrom Algae and Colocasia esculenta(Taro) Leaves Using ChemicalHydrolysis. Sustainability 2022, 14,16383. https://doi.org/10.3390/su142416383Academic Editor: Antonio ZuorroReceived: 4 October 2022Accepted: 27 November 2022Published: 7 December 2022Publisher’s Note: MDPI stays neutralwith regard to jurisdictional claims inpublished maps and institutional affil-iations.Copyright: © 2022 by the authors.Licensee MDPI, Basel, Switzerland.This article is an open access articledistributed under the terms andconditions of the Creative CommonsAttribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).sustainabilityArticleRecovery of Sugar and Nutrients from Algae and Colocasiaesculenta (Taro) Leaves Using Chemical HydrolysisSwati Dahiya 1 , Raja Chowdhury 1,*, Pradeep Kumar 2, Sanjoy Ghosh 3 and Asha Srinivasan 41 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India2 Department of Civil and Environmental Engineering, Sharda University, Greater Noida 201310, India3 Department of Bioscience and Bioengineering, Indian Institute of Technology Roorkee, Roorkee 247667, India4 Department of Civil and Environmental Engineering, The University of British Columbia,Vancouver, BC V6T1Z4, Canada* Correspondence: rajacfce@iitr.ac.in; Tel.: +91-1332284793Abstract: Algal biomass and Colocasia esculenta (Taro) leaves are available as waste biomass allover India. These biomasses can be used as renewable and sustainable resources for sugars andnutrients. Recovered nutrients and sugars can be used as cheap raw materials for biofuels andbiomaterials production. The hydrolysis of dried algal biomass and Colocasia esculenta (Taro) leaveswere investigated using 1%, 2%, and 5% solutions of ferric-chloride, nitric acid, and acetic acid for thereaction times of 30 and 60 min at 121 ◦C and 103.4 kPa (15 psi). 1% and 2% H2SO4 treatments wereused …
has type: Article
is shown at: 10.14288/1.0449103
language: eng
peer review status: Reviewed
provider: Vancouver : University of British Columbia Library
publisher: Multidisciplinary Digital Publishing Institute
publisher DOI: 10.3390/su142416383
rights: CC BY 4.0
rights URI: https://creativecommons.org/licenses/by/4.0/
scholar level: Faculty
scholar level: Researcher
subject: chemical hydrolysis
subject: algae
subject: Colocasia esculenta (Taro) leaves
subject: carbohydrate
subject: nutrient solubilization
subject: acidic treatment
type: Text
identifier URI: http://hdl.handle.net/2429/91339