id	keyword
eurjchem-2248	removal
eurjchem-2248	coconut
eurjchem-2248	shell
eurjchem-2248	charcoal
eurjchem-2248	adsorption
eurjchem-2248	metal
eurjchem-2248	coconut shell
eurjchem-2248	carbon
eurjchem-2248	shell charcoal
eurjchem-2248	solutions