continuous method in both the described batch and continuous methods all of the br 2 fed is incorporated in the cellulosic based carbon thus it is convenient to refer to the amount of br 2 in the treated cellulosic based carbon by reference to the amounts of br 2 and cellulosic based carbon fed to the reactor a 5 kg feed of br 2 and a 95 kg feed of cellulosic based carbon will be deemed to have produced a gaseous bromine treated cellulosic based carbon containing 5 wt bromine however if a practitioner should desire to directly measure the incorporated bromine such measure can be affected by schoniger combustion followed by silver nitrate titration gaseous halogen contacted cellulosic based carbon can contain from about 2 to about 20 wt bromine the wt being based on the total weight of the contacted cellulosic based carbon a wt bromine within the range of from about 5 to about 15 wt will be useful when treating flue gas from coal fired boilers for determination of i a temperature of initial energy release ii a self sustaining ignition temperature and iii the early stage energy release values it is useful to have a differential scanning calorimetry dsc trace of the heat flow values vs temperature u00b0 c of the treated and untreated thermally activate cellulosic based carbon samples as they are controllably heated the dsc conditions can be as follows the sample.