id	keyword
brj-23713	biochar
brj-23713	biomass
brj-23713	learning
brj-23713	pyrolysis
brj-23713	machine
brj-23713	carbon
brj-23713	yield
brj-23713	content
brj-23713	article
brj-23713	biochar yield
brj-23713	et al
brj-23713	model
brj-23713	machine learning
brj-23713	xgboost
brj-23713	temperature