Effect of bamboo and rice straw biochars on the mobility and redistribution of heavy metals (Cd, Cu, Pb and Zn) in contaminated soil

Lu, Keding; Yang, Xing; Gielen, Gerty; Bolan, Nanthi; Ok, Yong Sik; Niazi, Nabeel Khan; Xu, Shixiao; Yuan, Guodong; Chen, Xin; Zhang, Xiaokai; Liu, Dan; Song, Zhaoliang; Liu, Xingyuan; Wang, Hailong

doi:10.1016/j.jenvman.2016.05.068

Cited by 537 publications

(152 citation statements)

References 53 publications

Supporting

Mentioning

136

Contrasting

Unclassified

Order By: Relevance

“…However, the characteristics of the biochar samples depend on the feedstock type and biochar production conditions and could be different in SSA, porosity, and functional groups . The range of SSA obtained in this study can be compared with the results of some previous studies.…”

Section: Resultsmentioning

confidence: 81%

See 1 more Smart Citation

Lead and Zinc Stabilization of Soil Using Sewage Sludge Biochar: Optimization through Response Surface Methodology

Fathianpour

Taheriyoun

Soleimani

2018

CLEAN Soil Air Water

View full text Add to dashboard Cite

In this study, the effect of biochar produced from municipal sewage sludge on the stabilization of potentially toxic elements (PTEs), including lead (Pb), and zinc (Zn) in a mining polluted soil, is investigated. Biochar is produced through the pyrolysis process at three temperatures of 300, 400, and 500 C. The results of the biochar characterization shows that the pH and surface area of the samples increases with increasing pyrolysis temperature whereas the biochar yield decreases. Response surface methodology (RSM) is used to design and optimize the experiments. Three factors are considered, including biochar pyrolysis temperature, biochar/soil ratio, and time of incubation in the experimental design. The incubation time is the most effective parameter in the stabilization of both metals and shows a direct effect on the responses. However, the pyrolysis temperature has the lowest effect among the investigated parameters. The optimum conditions from RSM shows that biochar is able to stabilize each metal up to 70%, which presents the high potential of produced biochar to be used in the remediation of soils polluted with PTEs. Figure 5. Response surface and contour plot for interactive factors for Pb stabilization. a) Temperature and biochar/soil ratio (incubation time ¼ 60 days), b) biochar/soil ratio and incubation time (temperature ¼ 400 C).

show abstract

Section: Resultsmentioning

confidence: 81%

“…On the other hand, by increasing the incubation time up to 60 days, the minimum pyrolysis temperature (i.e., 300 °C) showed the highest Zn stabilization. Consequently, the risk of metals mobility and uptake by plants could be reduced as mentioned by other researchers …”

Section: Resultsmentioning

confidence: 90%

Lead and Zinc Stabilization of Soil Using Sewage Sludge Biochar: Optimization through Response Surface Methodology

Fathianpour

Taheriyoun

Soleimani

2018

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…the disposal of crop residue (Jeffery et al, 2015;Van Zwieten et al, 2010;Woolf, Amonette, Street-Perrott, Lehmann, & Joseph, 2010) and the sequestration of OC to mitigate climate change (Lehmann, 2007;Lehmann et al, 2006;Schlesinger & Amundson, 2019;Weng et al, 2017). Besides, biochar application does not only lead to increase soil pH and nutrient retention (Chan & Xu, 2009;Laird et al, 2010;Sohi, Krull, Lopez-Capel, & Bol, 2010;Van Zwieten et al, 2010) but also decreases the toxicity of contaminants in soil (Houben, Evrard, & Sonnet, 2013;Lu et al, 2017;Nie et al, 2018;O'Connor et al, 2018;, thus promoting crop biomass and yield (Biederman & Harpole, 2013;Crane-Droesch et al, 2013;Jeffery et al, 2011;Liu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Phytolith‐rich biochar: A potential Si fertilizer in desilicated soils

Delvaux

2019

GCB Bioenergy

105

View full text Add to dashboard Cite

Silicon (Si) is beneficial to plants since it increases photosynthetic efficiency, and alleviates biotic and abiotic stresses. In the most highly weathered and desilicated soils, plant phytoliths make up the reservoir of bioavailable Si. The regular removal of crop residues, however, substantially decreases this pool. Si supply may therefore be required to sustain continuous cropping. Available Si fertilizers are costly and usually poor in soluble Si. Biochar produced from the pyrolysis of phytolith‐rich biomass is thus a promising alternative Si source for plants. Taking into account the challenges of increasing food demand and environmental concerns, we evaluate the global potential of biochar produced from major crop residues and manures in terms of phytogenic Si (PhSi) supply. Crop residues contribute to 80% of the global production of biomass dry matter (8,201 Tg/year) of which 3,137 Tg/year are potentially available after pyrolysis, giving a potential application rate of 1.7 T ha−1 year−1 for highly weathered soils in the tropics. The potential PhSi supply from crop biochar amounts to 102 Tg Si/year. On its own, rice straws produce 57.7 Tg PhSi/year, accounting for 56.6% of the potential annual PhSi production. The Si release from crop biochar depends on inter altere feedstock type, pyrolysis temperature, soil pH, and buffer capacity. Furthermore, the amplitude of plant Si uptake and mineralomass depends on plant species, soil properties, and processes. These factors interact and can exert a decisive influence on the effectiveness of phytolithic biochar in releasing Si into highly weathered soils. We conclude that the use of phytolithic biochar as a Si fertilizer offers undeniable potential to mitigate desilication and to enhance Si ecological services due to soil weathering and biomass removal. This potential must be explored, as well as the conditions for using biochar in the field.

show abstract

“…Immobilization may involve the addition to soil of solid adsorbents such as biochar (Yang et al, 2016;Lu et al, 2017;Wu et al, 2017), while mobilization is often achieved by washing soil with one or more of the following chemicals: metal chelating agents (e.g., EDTA), salts (e.g., CaCl 2 , FeCl 3 ), strong acids (e.g., HCl, CH 3 COOH), or surfactants (e.g., 1-dodecylpyridinium chloride) (Mulligan et al, 2001;Conte et al, 2005;Zeng et al, 2005;Makino et al, 2007Makino et al, , 2008Makino et al, , 2016Kulikowska et al, 2015a,b;Guo et al, 2016).…”

Section: Introductionmentioning

confidence: 99%