Influence of<i> Gliricidia sepium</i> Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil

Kumarathilaka, Prasanna; Vithanage, Meththika

doi:10.1155/2017/6180636

Cited by 15 publications

(5 citation statements)

References 43 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(SP, incubated at saturated point; FC, incubated at field capacity; SP-PW, incubated at saturated point followed by permanent wilting point; and FC-PW, incubated at field capacity followed by permanent wilting point) were 2.007, 7.581, 0.005, and 5.900% of the total metal concentration, respectively. The findings of Kumarathilaka and Vithanage (2017) reflect a similar tendency as bioavailable Ni and Mn concentrations of serpentine soils were 0.30 and 0.25%, respectively, of total concentrations. Moreover, 33-323 and 11-76 mg kg −1 of Ni and Mn, respectively, were found as bioavailable fractions from four serpentine localities in Sri Lanka (Vithanage et al 2014).…”

Section: Discussionsupporting

confidence: 69%

“…Biochar, a type of black carbon resulting from pyrolysis of biomass under no/limited oxygen conditions, has been proven to be an effective and low-cost organic amendment for trace metal-contaminated sites (Inyang et al 2016). Previous research of our group has revealed strong immobilization capacity of 2.5% dendro-biochar (Gliricidia sepium biochar) on trace metals released from serpentine soils (Herath et al 2015; Kumarathilaka and Vithanage 2017). Herath et al (2015) found that dendro-biochar reduces bioavailable Cr, Ni, and Mn in serpentine soil by 96, 36, and 21%, respectively.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

et al. 2019

Self Cite

View full text Add to dashboard Cite

Purpose This study was conducted to evaluate the synergistic effects of organic amendments and soil water status on trace metal release from serpentine soil. Materials and methods Two organic amendments, dendro-biochar (BC) and municipal solid waste compost (CM), were added to serpentine soil at four different ratios, specifically 2.5:0.0, 2.5:1.0, 2.5:2.5, and 2.5:5.0% (w/w). Along with the control (with no organic amendments), each soil treatment was incubated separately under saturated point (SP) and field capacity (FC) water content for 10 days. Subsamples were obtained from each treatment to analyze the bioavailable trace metal concentration and related edaphic parameters, namely total organic carbon (TOC), nitrate (NO 3 −), phosphate (PO 4 3−), and cation exchange capacity (CEC). Then, the soil solution was eluded from each treatment and incubated for 10 days under permanent wilting point (PW). Furthermore, a seed germination test was performed under the different treatments. Results and discussion Significant reductions (p < 0.05) in bioavailable concentration of all four trace metals were observed in all the amendment ratios under all water status treatments (SP, FC, SP-PW, and FC-PW), compared with the control. Furthermore, FC-PW with the highest amendment ratio (2.5% BC:5.0% CM) reduced Ni by 67.6%; FC-PW with 2.5% BC + 2.5% CM immobilized Mn and Co by 92.1 and 96.9%, respectively, and SP water status with all four amendment ratios immobilized 100% of bioavailable Cr. Maximum amendment ratio under all four water status enhanced %TOC and significantly increased PO 4 3− concentration in SP-PW. However, FC showed comparatively high NO 3 − concentration than other treatments. Germination index (GI) for mung beans and tomato did not show a significant difference in response to amendment ratios or soil water status; however, SP treatment expressed significantly high seedling vigor (SVI) for mung beans. Conclusions Treatments of BC and CM effectively immobilize the bioavailable fraction of trace metals in serpentine soils. Increasing amendment ratio increases the %TOC regardless of the soil water status, whereas SP-PW is favorable for the availability of PO 4 3− , and FC is favorable for availability of NO 3 −. The GI for mung beans and tomato seed was not influenced by the soil water status nor by the amendment ratios. However, the SVI of mung bean seedlings was controlled by the soil water status.

show abstract

Section: Discussionsupporting

confidence: 69%

Section: Discussionmentioning

confidence: 99%

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Immobilisation was attributed to the higher oak biochar pH and lower DOC concentrations (due to biochar surface sorption). Similarly, bioenergy waste biochar reduced bioavailability of Ni (68-92%) and Mn (76-93%) (Kumarathilaka and Vithanage 2017). The immobilisation of these HMs was due to surface diffusion and electrostatic attractions.…”

Section: Soil Physicochemical Propertiesmentioning

confidence: 97%

Biochar remediation of soil: linking biochar production with function in heavy metal contaminated soils

Taraqqi-A-Kamal¹,

Atkinson²,

Khan³

et al. 2021

Plant Soil Environ.

View full text Add to dashboard Cite

The focus of this study is on the soil physicochemical, biological, and microbiological processes altered by biochar application to heavy metal (HM) contaminated soils. The aim is to highlight agronomical and environmental issues by which the restorative capacity of biochar might be developed. Literature shows biochar can induce soil remediation, however, it is unclear how soil processes are linked mechanistically to biochar production and if these processes can be manipulated to enhance soil remediation. The literature often fails to contribute to an improved understanding of the mechanisms by which biochar alters soil function. It is clear that factors such as biochar feedstock, pyrolysis conditions, application rate, and soil type are determinants in biochar soil functionality. These factors are developed to enhance our insight into production routes and the benefits of biochar in HM soil remediation. Despite a large number of studies of biochar in soils, there is little understanding of long-term effects, this is particularly true with respect to the use and need for reapplication in soil remediation.

show abstract

“…Char derived from the paper and plastic waste mixture showed the highest capacity of 172 µg g −1 [37]. The impact of char on the release rate of certain trace metals in soils contaminated with organic and inorganic acids was assessed in two studies [72,73]. The addition of woodchips GC to the contaminated soil reduced the bioavailability of Ni and Mn, and reduced the Pb and Cu release rate to the soil.…”

Section: Gas Adsorption and Soil Remediationmentioning

confidence: 99%

Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

et al. 2023

View full text Add to dashboard Cite

The thermochemical process of gasification is widely utilized for bioenergy production and is particularly attractive due to its high conversion efficiency. However, a gasification byproduct, known as char, is commonly treated as industrial waste despite its attractive qualities. Indeed, due to its high carbon content (up to 91%) and well-developed porosity (specific surface areas up to 1253 m2 g−1), gasification char could be considered a cost-effective substitute for activated carbon in various applications, such as catalysis and adsorption. However, its properties are highly dependent on the gasification parameters and the initial feedstock selected, and thus a careful characterization of the material is needed to find the most suitable applications. This review can act as a preliminary assessment of the gasification along with the expected char properties, aiding in the selection of the most appropriate valorization pathways. In particular, different application areas, their relation to the gasification process, and the char properties are extensively discussed.

show abstract

Influence of Gliricidia sepium Biochar on Attenuate Perchlorate-Induced Heavy Metal Release in Serpentine Soil

Cited by 15 publications

References 43 publications

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

Influence of soil water content and soil amendments on trace metal release and seedling growth in serpentine soil

Biochar remediation of soil: linking biochar production with function in heavy metal contaminated soils

Innovative Pathways for the Valorization of Biomass Gasification Char: A Systematic Review

Contact Info

Product

Resources

About