TY  - JOUR
T1  - Activated Carbon via. Pyropysis of Tea Industry Waste Biochar with
KOH Activation: Preparation and Characterization
AU - Duy Nguyen, Trinh AU - Van Tran, Thuan AU - Ngoc Hoang, Bich AU - Thien Tran, Hien AU - Phu Thuong Nguyen, Nhan AU - Thi Thanh Ho, Van AU - Dai Hai, Nguyen AU - Dai Cao, Vu AU - Giang Bach, Long 
JO  - Journal of Engineering and Applied Sciences
VL  - 14
IS  - 6
SP  - 1755
EP  - 1759
PY  - 2019
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2019.1755.1759
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2019.1755.1759
KW  - Activated carbon
KW  -tea industry waste
KW  -KOH activation
KW  -characterization
KW  -environmental
KW  -pollutants
AB  - Tea waste is a abundant and low-cost biomass resource for preparation of Activated Carbons (ACs)
The present study addressed a pyrolysis route using KOH as an activating agent to develop with new pores
of the ACs from tea industry waste. The effects of activation temperatures (600-800°C) on the structure of ACs
were investigated. Characteristics of ACs were analyzed by several physical techniques such as analysis
methods including X-Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Thermo-Gravimetric
Analysis (TGA) and nitrogen adsorption/desorption. The characterization results indicated that the
as-synthesized ACs possess amorphous structure for all activation temperatures and the largest BET specific
surface area (1107.5 m<sup>2</sup>/g) accompanied with the highest pore volume (0.579 cm<sup>3</sup>/g) at 800&deg;C. The average
micropore size fluctuated in the range of 5-7 A depending on the activation temperature. Therefore, the
KOH-activated carbons with high porosity can offer a great adsorption capacity as promising for applications
in many areas especially in removal of environmental pollutants.
ER  -