Although this slurry may be used as it is for {HEAD ~ the treatment} of {TAIL ~ heavy metals}, use thereof not only results in an increased transportation cost but may arouse the following problem 
Although this slurry may be used as it is for { HEAD ~ the treatment } of { TAIL ~ heavy metals } , use thereof not only results in an increased transportation cost but may arouse the following problem
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH