Isebenza ezindaweni eziyingozi eziqukethe i-methane(evame ukwaziwa ngokuthi igesi) kanye nokuqhuma kwezintuli zamalahle, ezikwazi ukuphatha indle equkethe ingxube yezinto eziqinile ezingancibiliki njengentlenga, i-slime yamalahle, ama-cinders, i-fibrous material, njll.
