Study of the potential valorisation of heavy metal contaminated biomass via phytoremediation by fast pyrolysis: Part I. Influence of temperature, biomass species and solid heat carrier on the behaviour of heavy metals

Lievens, Caroline; Yperman, Jan; Vangronsveld, Jaco; Carleer, Robert

doi:10.1016/j.fuel.2007.10.021

Cited by 120 publications

(64 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The quantity of solid heat carrier chosen, to obtain an optimum heat transfer and to prevent clothing, is a 1/1 volume ratio of a mixture of biomass and fumed silica. The process parameters and the pyrolysis set-up have been reported earlier [12]. The pyrolysis products can be divided in three phases: solid, liquid and gas.…”

Section: Pyrolysis Set-upmentioning

confidence: 99%

Fast pyrolysis of heavy metal contaminated willow: Influence of the plant part

Lievens

Carleer

Cornelissen

et al. 2009

Fuel

Self Cite

View full text Add to dashboard Cite

a b s t r a c tFast pyrolysis of heavy metal contaminated willow, with high concentrations of Cd, Cu, Pb and Zn, resulting from phytoremediation, is investigated. The distribution of the heavy metals depends on the plant part (leaves and branches). Nevertheless, their individual pyrolysis fractions (at an operational temperature of 623 K), i.e., bio-oil/tar and gas, are both heavy metal free. Some small differences in the kind and amounts of the organic compounds are found in the bio-oil and gaseous fraction. In view of practical considerations leaves and branches should nevertheless be pyrolysed simultaneously. The use of hyphenated thermal analytical techniques allows obtaining more detailed information on the compositional features of the pyrolysis fraction.

show abstract

Section: Pyrolysis Set-upmentioning

confidence: 99%

Fast pyrolysis of heavy metal contaminated willow: Influence of the plant part

Lievens

Carleer

Cornelissen

et al. 2009

Fuel

Self Cite

View full text Add to dashboard Cite

show abstract

“…Preliminary demonstration of laboratory-scale (3 g batch -1 ) fast pyrolysis (30 K min -1 heating rate) in a quartz tubular reactor also shows Cd being volatized at elevated temperatures. Zn, Pb and Cu are much less prone to volatilization and remain in the char (Lieves et al 2008). The retention of heavy metals in the char leads to increased concentrations.…”

Section: Behaviour Of Heavy Metals During Pyrolysismentioning

confidence: 99%

“…were adsorbed onto the biochars and the activated carbon (Han et al 2013). After rapid pyrolysis of birch and sunflower at low temperature it was found that heavy metals were concentrated in the ash/char fraction and Cd compounds were more susceptible to volatilization at 673 K (Lieves et al 2008). In fast, pyrolysis of heavy metal-contaminated willow with high concentrations of Cd, Cu, Pb and Zn the two pyrolysis fractions (at an operational temperature of 623 K), i.e.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of Sedum plumbizincicola, a zinc and cadmium hyperaccumulator: pyrolysis kinetics, heavy metal behaviour and bio-oil production

Zhong

et al. 2016

Clean Techn Environ Policy

View full text Add to dashboard Cite

Appropriate disposal of hyperaccumulator biomass is a problem inhibiting the widespread use of phytoremediation technology. In the present study, kinetic analysis of the pyrolysis process of Sedum plumbizincicola, the behaviour of heavy metals and bio-oil composition were studied. The kinetic analysis of the pyrolysis process shows that activation energy (E) changed from 150 to 186 kJ mol -1 and the frequency factor (A) changed from 1.34 9 10 11 to 8.99 9 10 15 s -1 . At temperatures of 450-750°C more than 66.3 % of zinc (Zn) remained in the char. More than 87.6 % of the cadmium (Cd) was found in the bio-oil. Pyrolysis at 650°C led to the highest yield of alkanes with low-oxygen compounds found in the bio-oil. Pyrolysis at 650°C can likely offer a valuable processing method for S. plumbizincicola and recovery of Zn from the char and recovery of Cd from the bio-oil will be attempted in future research.

show abstract

“…[11], [14], Koppolu ve Clements [15], [16] ve Lievens ve diğ. [17], [18], fitoremediasyon sonrasında kirlenmiş ayçiçeği, huş ağacı, sentetik bitkiler ve meşe gibi bitkilerin pirolizle değerlendirilmesini çalışmışlardır.…”

Section: Introductionunclassified