Feasibility of mercury removal from simulated flue gas by activated chars made from poultry manures

Klasson, K. Thomas; Lima, Isabel M.; Boihem, L. L.; Wartelle, Lynda H.

doi:10.1016/j.jenvman.2010.06.028

Cited by 23 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the production of activated charcoal requires extra conditioning steps, which reduces the economic return (Lussier et al, 1994). Several studies have examined biochar and activated biochar use in municipal wastewater treatment (Ng et al, 2002, 2003; Bansode et al, 2004; Lima and Marshall, 2009), in mercury removal from flue gas (Klasson et al, 2010), and in other water filtering systems (van Duck and van de Voorde, 1984). However, for biochar to be used for potable water filtration, the potential for bacterial growth and organic contaminates on the biochar needs to be further investigated (Wallis et al, 1974).…”

Section: Potential Specialized Marketsmentioning

confidence: 99%

Biochar: A Synthesis of Its Agronomic Impact beyond Carbon Sequestration

Spokas

Cantrell²,

Novak³

et al. 2012

J. Environ. Qual.

Self Cite

840

507

View full text Add to dashboard Cite

Biochar has been heralded as an amendment to revitalize degraded soils, improve soil carbon sequestration, increase agronomic productivity, and enter into future carbon trading markets. However, scientific and economic technicalties may limit the ability of biochar to consistently deliver on these expectations. Past research has demonstrated that biochar is part of the black carbon continuum with variable properties due to the net result of production (e.g., feedstock and pyrolysis conditions) and postproduction factors (storage or activation). Therefore, biochar is not a single entity but rather spans a wide range of black carbon forms. Biochar is black carbon, but not all black carbon is biochar. Agronomic benefits arising from biochar additions to degraded soils have been emphasized, but negligible and negative agronomic effects have also been reported. Fifty percent of the reviewed studies reported yield increases after black carbon or biochar additions, with the remainder of the studies reporting alarming decreases to no significant differences. Hardwood biochar (black carbon) produced by traditional methods (kilns or soil pits) possessed the most consistent yield increases when added to soils. The universality of this conclusion requires further evaluation due to the highly skewed feedstock preferences within existing studies. With global population expanding while the amount of arable land remains limited, restoring soil quality to nonproductive soils could be key to meeting future global food production, food security, and energy supplies; biochar may play a role in this endeavor. Biochar economics are often marginally viable and are tightly tied to the assumed duration of agronomic benefits. Further research is needed to determine the conditions under which biochar can provide economic and agronomic benefits and to elucidate the fundamental mechanisms responsible for these benefits.

show abstract

Section: Potential Specialized Marketsmentioning

confidence: 99%

Biochar: A Synthesis of Its Agronomic Impact beyond Carbon Sequestration

Spokas

Cantrell²,

Novak³

et al. 2012

J. Environ. Qual.

Self Cite

840

507

View full text Add to dashboard Cite

show abstract

“…Numerous studies have been carried out at laboratory and industrial scale in the search for economically feasible activated carbons able to retain mercury efficiently [12][13][14]. Activated carbons from different raw materials have been used to capture reactive mercury species [15][16][17], but to retain elemental mercury (Hg 0 ) chemical impregnated sorbents are generally necessary [18][19][20][21]. The efficiency of these activated carbons depends on characteristics such as particle size, surface area, porosity, etc., but it is also conditioned by the conditions in which the process of coal combustion is carried out, such as gas composition, temperature, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

López-Antón

Rumayor

Dı́az-Somoano

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

“…Apart from having the advantage of high carbon content and good textural characteristics, some char samples contain a large amount of chloride which improves their performance as sorbents for mercury retention. Activated coal chars have been tested for the retention of mercury in a number of studies [11][12][13]. However, the main benefit of using char residue from gasification is that it does not have to be pretreated, which reduces the cost.…”

Section: Introductionmentioning

confidence: 99%

Retention of mercury by low-cost sorbents: Influence of flue gas composition and fly ash occurrence

Fuente-Cuesta

López-Antón

Dı́az-Somoano

et al. 2012

Chemical Engineering Journal

View full text Add to dashboard Cite

The present study employs chars obtained from the gasification of different types of biomass as low cost sorbents of mercury at laboratory scale. The influence of gas composition and fly ash occurrence on mercury retention and oxidation by char samples was evaluated. Chars obtained from a mixture of paper and plastic waste showed mercury retention capacities similar to those obtained with a commercial activated carbon. Homogeneous mercury oxidation was mainly promoted by NO 2 and , to a certain extend, by SO 2 +O 2 . The highest heterogeneous mercury oxidation was observed in the chars with the highest mercury retention capacity suggesting that the sorption process also involves the capture of oxidized mercury species. The presence of fly ash particles clearly influenced heterogeneous oxidation but did not affect mercury retention by the char sorbents.

show abstract

Feasibility of mercury removal from simulated flue gas by activated chars made from poultry manures

Cited by 23 publications

References 17 publications

Biochar: A Synthesis of Its Agronomic Impact beyond Carbon Sequestration

Biochar: A Synthesis of Its Agronomic Impact beyond Carbon Sequestration

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

Retention of mercury by low-cost sorbents: Influence of flue gas composition and fly ash occurrence

Contact Info

Product

Resources

About