Spent tea leaves and tea bags - Promising biofuels?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10260435" target="_blank" >RIV/61989100:27230/25:10260435 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27640/25:10260435 RIV/61989100:27730/25:10260435

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0960148124019098?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0960148124019098?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.renene.2024.121841" target="_blank" >10.1016/j.renene.2024.121841</a>

Result language

angličtina

Original language name

Spent tea leaves and tea bags - Promising biofuels?

Original language description

The spent tea leaves used after the extraction of liquid from processed tea are insufficiently utilized waste, rich in essential amino acids, polyphenols, alkaloids, and minerals, produced in large quantities, e.g., in tea houses, hospitals, school canteens, etc. Therefore, this study is aimed at characterizing this waste, how it is processed into pellets and how it subsequently increases its energy potential by torrefaction. The influence of the method of tea packaging, i.e., loose tea leaves or tea bags, was also considered. Several types of tea waste were processed using a pilot plant pelletizing press and torrefaction stand. The prepared pellets were characterized by mechanical parameters, such as the pellet durability index, the wettability index, water resistance, hardness, or specific bulk density, and were integrated by FTIR measurements. Furthermore, pellet&apos;s energy parameters, such as higher heating value, lower heating value, and elemental analysis, were compared. The results show that non-torrefied pellets have an average combustion heat of 19 kJ kg−1, while torrefied pellets have a value of 9 kJ kg−1 higher. Overall, the study demonstrates that spent tea leaves can be converted into a sustainable source of bioenergy and presents a solution for the treatment of this waste, as well as a renewable energy option. © 2024 Elsevier Ltd

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Renewable Energy

ISSN

0960-1481

e-ISSN

1879-0682

Volume of the periodical

Volume 238

Issue of the periodical within the volume

January 2025

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

1-9

UT code for WoS article

001361657400001

EID of the result in the Scopus database

2-s2.0-85209399071