Optimization of Activated Carbon Fiber Preparation from Hemp Fiber through Dipotassium Hydrogen Phosphate for Application of Thermal Storage System

Table 1

Parameters and their levels.

Sl. No	Parameters	Symbols	Levels
			L1	L2	L3	L4
1	Temperature of activation (°C)	A	600	700	800	900
2	Rate of temperature activation (°C/min)	B	40	30	20	10
3	H3PO4 concentration ()	C	7.5	15	22.5	30
4	Carbonization temperature (°C)	D	Without	200	300	400
5	Time of activation (hrs)	E	1	2	3	4