Reduction of bioavailability of heavy metals during vermicomposting of phumdi biomass of Loktak Lake (India) using <i>Eisenia fetida</i>

Singh, Waikhom Roshan; Pankaj, Shashi Kumar; Singh, Jiwan; Kalamdhad, Ajay S.

doi:10.3184/095422914x14043211756226

Cited by 5 publications

(2 citation statements)

References 22 publications

(55 reference statements)

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“…One of the methods is the usage of earthworms to clean up the soil from various pollutants, such as heavy metals, by the process of vermicomposting (Bianchin, 2009;Cheng-Kima et al, 2016). The term vermicomposting represents the process where earthworms ingest, grind and digest organic waste and finally convert it into a much finer, humified, microbially active material by the cooperative action of earthworms and microorganisms (Roshan Singh et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

HEAVY METAL CONTENT IN SOIL AND THEIR BIOACCUMULATION IN EARTHWORMS (Lumbricus terrestris L.)

Latifi¹,

Musa²,

Musa³

2020

AgricultForest

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The aim of this study was to determine the concentrations of heavy metals (Cu, Fe, Zn, Pb, and Cd) in the soil and earthworm body (Lumbricus terrestris), as well to estimate Bioaccumulation Factor (BAF) in earthworm body. The soil and earthworm samples were taken three times, from March to June 2018, in six different locations in Kosovo (Mitrovicë, Kishnicë, Kastriot, Barilevë, Drenas and Lipjan) and were brought to the laboratory for heavy metal analysis. Concentrations of heavy metals in soil and earthworm samples were determined by an Atomic Absorption Spectrophotometer (AAS) Perkin-Elmer brand model 1100 (Boston, MA, USA). Mean heavy metal concentration in soils were, 0.03-0.78mg/kg, 70.62-264.29mg/kg, 18.96-82.24mg/kg, 0.11-0.52 and 0.03-0.42mg/kg for Cu, Fe, Zn, Pb, and Cd respectively. The mean concentration range recorded in earthworms (Lumbricus terrestris) were 0.02-0.42mg/kg for Cu, 53.11-205.31mg/kg for Fe, 15.74-53.15mg/kg for Zn, 0.07-0.43mg/kg for Pb, and 0.01-0.37mg/kg for Cd. Based on the results obtained it was shown that there are statistically significant differences of different levels of significance regarding the content of heavy metals according to locality (Factor A), substrate (Factor B), heavy metal (Factor C) and factor interactions (A*B), (A*C), (B*C), and (A*B*C). The accumulation of heavy metals in earthworm samples maintains the same profile as mean heavy metal concentration of the soil Fe>Zn>Pb>Cu>Cd. Since some organisms like reptiles, birds and some other vertebrates feed on earthworms, transfer of these metals across the food chain is most likely, and therefore this research will be useful for risk assessment by relevant institutions responsible for the monitoring and surveying of environmental pollution and food security and safety in Kosovo.

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Section: Introductionmentioning

confidence: 99%

HEAVY METAL CONTENT IN SOIL AND THEIR BIOACCUMULATION IN EARTHWORMS (Lumbricus terrestris L.)

Latifi¹,

Musa²,

Musa³

2020

AgricultForest

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“…The highest reduction of 50% in VS at day 56 corresponded to PHA-treated product, while the smallest percent ash increase of (35%) occurred in control. Reduction in volatile solids content during vermicomposting of the waste mixtures could be as a result of the disintegration process by microbial activity and loss of carbon in the form of CO 2 (Khwairakpam and Bhargava 2009;Singh and Kalamdhad 2013b). Utilization of carbon by microorganism as a primary energy source for their growth during the vermicomposting process might also cause the reduction of volatile solids (Khwairakpam and Bhargava 2009;Levanon and Pluda 2002).…”

Section: Effect Of P and Ca Bearing Sources On The Percentage Ash And Vsmentioning

confidence: 99%

Enhancing organic waste decomposition with addition of phosphorus and calcium through different sources

Unuofin

Siswana

2018

Int J Recycl Org Waste Agricult

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Purpose This study assessed the constituent element in rock phosphate (RP) that is responsible for enhancing quick decomposition of cow dung-waste paper mixtures during vermicomposting. Method Feedstock weighing 5 kg was achieved by mixing 2.16 kg shredded waste paper together with 2.84 kg cow dung sprinkled with water and then enriched with (1% P) as RP from triple superphosphate (TSP), phosphoric acid (PHA) and Ca in the form of CaCl 2 at the level supplied by RP. After mixing, they were loaded into vermireactors and inoculated with matured earthworms at a stocking density of 12.5 g worms/kg feed for the entire 56 days. The decomposition of the mixtures was then monitored by measuring maturity parameters, a germination test for phyto-toxicity and morphological properties was assessed using scanning electron microscopy (SEM). Result Results revealed that rapid decomposition of waste was recorded where TSP was applied than RP whereas Ca-source had the least effect. A C:N ratio of 12 was achieved within 28 days where TSP was added, while RP, PHA and CaCl 2 needed 42, 56 and more than 56 days, respectively. Conclusion It was evidently revealed from the results that P was basically the cause of the improved decomposition of the waste mixtures. To achieve quicker and well-humified enriched vermicompost with a C:N ratio of 10 within 20 days of vermicomposting, add water-soluble P sources.

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Bioconversion of lawn waste amended with kitchen waste and buffalo dung in to value-added vermicompost using Eisenia foetida to alleviate landfill burden

Karwal

Kaushik

2020

J Mater Cycles Waste Manag

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Reduction of bioavailability of heavy metals during vermicomposting of phumdi biomass of Loktak Lake (India) using Eisenia fetida

Cited by 5 publications

References 22 publications

HEAVY METAL CONTENT IN SOIL AND THEIR BIOACCUMULATION IN EARTHWORMS (Lumbricus terrestris L.)

HEAVY METAL CONTENT IN SOIL AND THEIR BIOACCUMULATION IN EARTHWORMS (Lumbricus terrestris L.)

Enhancing organic waste decomposition with addition of phosphorus and calcium through different sources

Bioconversion of lawn waste amended with kitchen waste and buffalo dung in to value-added vermicompost using Eisenia foetida to alleviate landfill burden

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