Pb(II) and Cr(VI) sorption by biochars pyrolyzed from the municipal wastewater sludge under different heating conditions

Zhang, Weihua; Mao, Shengyao; Chen, Hao; Huang, Long; Qiu, Rongliang

doi:10.1016/j.biortech.2013.08.082

Cited by 190 publications

(76 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The maximum metal sorption capacity of a biochar generally increases with pyrolysis temperature to a peak around 350-400°C, after which sorption decreases with pyrolysis temperature (Kołodyńska et al, 2012;Uchimiya et al, 2011b;Zhang et al, 2013a). This peak is concurrent with a peak in the cation exchange capacity of biochar found in the same temperature range (Gomez-Eyles et al, 2013a).…”

Section: Batch Sorption Studies To Elucidate Biochar Sorption Mechanismsmentioning

confidence: 63%

Application of Biochar for Soil Remediation

Sizmur

Puga

Moreno‐Jiménez

et al. 2015

SSSA Special Publications

View full text Add to dashboard Cite

Section: Batch Sorption Studies To Elucidate Biochar Sorption Mechanismsmentioning

confidence: 63%

Application of Biochar for Soil Remediation

Sizmur

Puga

Moreno‐Jiménez

et al. 2015

SSSA Special Publications

View full text Add to dashboard Cite

“…The pH-dependent Cr adsorption on biochar was also shown by others (Demirbas et al 2004;Dong et al 2011;Mohan et al 2011). Zhang et al (2013) also noted that the highest Pb adsorption on seven biochars occurred at pH 5.0, a value similar to that of our experiments (i.e., 4.5); moreover, these authors showed that Pb adsorption was stronger than that of Cr, by comparing the shape of the adsorption isotherms of Pb (at pH 5.0) and Cr (at pH 2.0). A previous study (Xu et al 2013) revealed that Cu removal by dairy manure-derived biochar from aqueous solutions was mainly attributed to the formation of Cu phosphate and Cu carbonate precipitates.…”

Section: Adsorption Properties Of Biocharmentioning

confidence: 99%

Effect of pruning-derived biochar on heavy metals removal and water dynamics

et al. 2014

View full text Add to dashboard Cite

Biomass-derived biochar is considered as a promising heavy metal adsorbent, due to abundance of polar functional groups, such as carboxylic, hydroxyl, and amino groups, which are available for heavy metal removal. The aims of this study were to evaluate the effectiveness of an orchard pruning-derived biochar in removing some heavy metals (through the evaluation of isotherms) and to study water dynamics at the solid-liquid interface as affected by heavy metal adsorption (through an innovative nuclear magnetic resonance (NMR) relaxometry approach). Both isotherms and NMR spectra revealed that Pb and Cr showed a good affinity for the biochar surface (Pb > Cr), while Cu was less affine. Accordingly, higher amounts of Pb and Cr were adsorbed by biochar as compared to those of Cu in the single systems. In binary systems (i.e., when two metals were applied simultaneously), Pb showed the highest inhibition of the adsorption of the other two metals, whereas the opposite was evidenced when Cu was used; the competitive adsorption was also strongly influenced by the metal residence time on biochar surface. In ternary systems (i.e., when all metals were applied simultaneously), even in the presence of high amounts of Pb and Cr, considerable adsorption of Cu occurred, indicating that some biochar adsorption sites were highly specific for a single metal.

show abstract

“…The study of Cr (VI) and Pb (II) adsorption by biochar pyrolysed from sludge of municipal wastewater, adsorption isotherms on the biochar were simulated with Langmuir and Freundlich equations. The study revealed that Pb (II) adsorption behaviour fitted better with Langmuir equation than Freundlich equation [131].…”

Section: Adsorption Isothermmentioning

confidence: 90%

“…Chen et al [57] studied adsorption isotherms at different initial of Cu (II) and Zn (II) that ranged from 0.1 to 5.0 mM that has proven that the Langmuir model (R 2 > 0.998) fit the data better than the Freundlich model (R 2 were 0.86-0.94). Many researchers also reported that adsorption of trace metals by biochar fits better to Freundlich than Langmuir isotherm in the dynamic data [26,131,132,133].…”

Section: Adsorption Isothermmentioning

confidence: 99%

Review of Eco-Friendly Biochar Used in the Removal of Trace Metals on Aqueous Phases

Duwiejuah¹,

Cobbina²,

Bakobie³

2017

IJEBB

View full text Add to dashboard Cite

Eco-friendly biochar produced from cost-effective and readily available agricultural waste will likely pose no threat on the aqueous phases, other environmental media, human health and emission of greenhouse gases to the atmosphere. Optimising biochar for an intended application could require careful selection of a biomass feedstock as well as production pyrolysis technique and conditions for the production of biochars with specific characteristics. Previous studies have explores the relationships that exist between biochar production conditions, characteristics, and possible end-uses of biochar. This review provides an overview of the production and utilisation of biochar as absorbents for adsorption of trace metals in contaminated aqueous environment. Biochar has great affinity to adsorb molecular ions that is making it possible to be used for various toxicological remediation strategies. It has proven effective and useful for mitigating aqueous metals, organic compounds, suspended solids, and organic hydrocarbons in a various kind of industrial applications such as urban and residential storm water runoff, landfill leachates, industrial runoff, resource extraction runoff, and industrial wastewater filtration. Specifically designed biochar could be very effective in the removal of trace metals from contaminated aqueous environment. The multiple factors that determine the adsorption of the trace metals in aqueous environment or phases needs to be carefully examined. Cost-effectiveness of biomass feedstock and eco-friendliness of techniques need to also be given much consideration by way of making comparison with existing contaminant mitigation technologies. Keywords: aqueous phases, biochar, cost-effective, biomass feedstock, removal, trace metalsCite This Article: A. B. Duwiejuah, S.

show abstract

Pb(II) and Cr(VI) sorption by biochars pyrolyzed from the municipal wastewater sludge under different heating conditions

Cited by 190 publications

References 29 publications

Application of Biochar for Soil Remediation

Application of Biochar for Soil Remediation

Effect of pruning-derived biochar on heavy metals removal and water dynamics

Review of Eco-Friendly Biochar Used in the Removal of Trace Metals on Aqueous Phases

Contact Info

Product

Resources

About