Air gasification of mixed plastic wastes using calcined dolomite and activated carbon in a two-stage gasifier to reduce tar

Promoting effect of various biomass ashes on the steam gasification of low-rank coal

“…Some catalysts such as nickel based catalysts were found to be able to increase the hydrogen production, and result in a high H 2 /CO ratio [22]. Some natural minerals such as olivine [23], calcite [24], and dolomite [25] were also found to be suitable for the gasification. Alkali and alkaline earth metal (AAEM) species have been extensively applied for the coal gasification due to their high catalytic activity and low cost [26][27][28][29][30][31].…”

H 2 -rich syngas production through mixed residual biomass and HDPE waste via integrated catalytic gasification and tar cracking plus bio-char upgrading

“…The resulting C * species subsequently reacted with oxygen from dissociation adsorbed steam to yield CO and H 2 [51][52][53][54][55][56]. CaO and MgO which these oxides further enhance the tar cracking [20,[61][62][63][64][65][66][67]. Table 5 shows the effect of the dolomite bed on gas composition and tar cracking.…”

Novel strategy in biohydrogen energy production from COVID - 19 plastic waste: A critical review

“…Overall, the plastic waste gasification process could not be too high to avoid producing syngas with less hydrogen and carbon monoxide than the equivalency ratio requires. Tar elimination can also be accomplished by including bed additives and thermal cracking in the gasification process [ 105 ].…”