Pyrolysis conditions and ozone oxidation effects on ammonia adsorption in biomass generated chars

dc.contributor.author	Kastner, JR	en
dc.contributor.author	Miller, J	en
dc.contributor.author	Das, KC	en
dc.date.accessioned	2014-06-06T06:49:01Z
dc.date.available	2014-06-06T06:49:01Z
dc.date.issued	2009	en
dc.identifier.issn	03043894	en
dc.identifier.uri	http://dx.doi.org/10.1016/j.jhazmat.2008.09.051	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/4384
dc.subject	Activated carbon	en
dc.subject	Ozone activation	en
dc.subject	Pyrolysis	en
dc.subject	Water vapor	en
dc.subject.other	Activation process	en
dc.subject.other	Adsorption capacities	en
dc.subject.other	Ammonia adsorptions	en
dc.subject.other	Biomass chars	en
dc.subject.other	Break through curves	en
dc.subject.other	Low energies	en
dc.subject.other	Low temperatures	en
dc.subject.other	Ozone oxidations	en
dc.subject.other	Ozone treatments	en
dc.subject.other	Palm oil	en
dc.subject.other	Palm oil shells	en
dc.subject.other	Palm shells	en
dc.subject.other	Peanut hulls	en
dc.subject.other	Poultry litters	en
dc.subject.other	Relative humidities	en
dc.subject.other	Room temperatures	en
dc.subject.other	Activated carbon treatment	en
dc.subject.other	Ammonia	en
dc.subject.other	Atmospheric humidity	en
dc.subject.other	Biological materials	en
dc.subject.other	Biomass	en
dc.subject.other	Charcoal	en
dc.subject.other	Chemical reactions	en
dc.subject.other	Fly ash	en
dc.subject.other	Gas adsorption	en
dc.subject.other	Moisture	en
dc.subject.other	Ozone	en
dc.subject.other	Photomasks	en
dc.subject.other	Pyrolysis	en
dc.subject.other	Thermal effects	en
dc.subject.other	Thermogravimetric analysis	en
dc.subject.other	Vegetable oils	en
dc.subject.other	Water vapor	en
dc.subject.other	Activated carbon	en
dc.subject.other	activated carbon	en
dc.subject.other	adsorption	en
dc.subject.other	ammonia	en
dc.subject.other	biomass	en
dc.subject.other	oxidation	en
dc.subject.other	ozone	en
dc.subject.other	pyrolysis	en
dc.subject.other	Adsorption	en
dc.subject.other	Ammonia	en
dc.subject.other	Biomass	en
dc.subject.other	Charcoal	en
dc.subject.other	Environmental Pollutants	en
dc.subject.other	Hot Temperature	en
dc.subject.other	Oxidation-Reduction	en
dc.subject.other	Ozone	en
dc.subject.other	Activated Carbon	en
dc.subject.other	Ammonia	en
dc.subject.other	Biomass	en
dc.subject.other	Charcoal	en
dc.subject.other	Chemical Reactions	en
dc.subject.other	Gravimetry	en
dc.subject.other	Humidity	en
dc.subject.other	Moisture	en
dc.subject.other	Ozone	en
dc.subject.other	Pyrolysis	en
dc.subject.other	Vapors	en
dc.subject.other	Vegetable Oil	en
dc.subject.other	Arachis hypogaea	en
dc.title	Pyrolysis conditions and ozone oxidation effects on ammonia adsorption in biomass generated chars	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jhazmat.2008.09.051	en
heal.publicationDate	2009	en
heal.abstract	Ammonia adsorbents were generated via pyrolysis of biomass (peanut hulls and palm oil shells) over a range of temperatures and compared to a commercially available activated carbon (AC) and solid biomass residuals (wood and poultry litter fly ash). Dynamic ammonia adsorption studies (i.e., breakthrough curves) were performed using these adsorbents at 23 °C from 6 to 17 ppmv NH3. Of the biomass chars, palm oil char generated at 500 °C had the highest NH3 adsorption capacity (0.70 mg/g, 6 ppmv, 10% relative humidity (RH)), was similar to the AC, and contrasted to the other adsorbents (including the AC), the NH3 adsorption capacity significantly increased if the relative humidity was increased (4 mg/g, 7 ppmv, 73% RH). Room temperature ozone treatment of the chars and activated carbon significantly increased the NH3 adsorption capacity (10% RH); resultant adsorption capacity, q (mg/g) increased by ∼2, 6, and 10 times for palm oil char, peanut hull char (pyrolysis only), and activated carbon, respectively. However, water vapor (73% RH at 23 °C) significantly reduced NH3 adsorption capacity in the steam and ozone treated biomass, yet had no effect on the palm shell char generated at 500 °C. These results indicate the feasibility of using a low temperature (and thus low energy input) pyrolysis and activation process for the generation of NH3 adsorbents from biomass residuals. © 2008 Elsevier B.V. All rights reserved.	en
heal.journalName	Journal of Hazardous Materials	en
dc.identifier.issue	2-3	en
dc.identifier.volume	164	en
dc.identifier.doi	10.1016/j.jhazmat.2008.09.051	en
dc.identifier.spage	1420	en
dc.identifier.epage	1427	en