Metal remediation and biodegradation potential of earthworm species on municipal solid waste: A parallel analysis between Metaphire posthuma and Eisenia fetida

Exploring metal detoxification and accumulation potential during vermicomposting of Tea factory coal ash: sequential extraction and fluorescence probe analysis

“…Nonetheless, no valid rationale has been supported by experimental evidence. On the other hand, many studies have reported significant reduction in heavy metal concentrations during vermicomposting 2 5 23 . There are two probable reasons behind such phenomena.…”

“…Firstly, the earthworm mediated biodegradation process increases the levels of humic fractions, which can strongly immobilize metals by the formation of stable metal-humus complexes 4 ; secondly, the earthworms bind metals through the well-known pathway discussed earlier 11 . Nevertheless, a lot of ambiguities still persist because the metal binding ability of earthworms is often inconsistent 2 9 23 . The differential nature of metal solubility may be an important factor in this regard.…”

“…To compare the potential removal efficiency (RE) of the metals between three bio-composting systems [(1) Eisenia vermicompost, (2) Lampito vermicompost, and (3) aerobic compost], the total metal concentrations were computed as shown above at the start (t = 0 day) and the end (t = 60 days) for each experiment and the RE values were computed using the following equation 23 :…”

Vermicomposting of coal fly ash using epigeic and epi-endogeic earthworm species: nutrient dynamics and metal remediation

“…70 The signicant reduction in metal concentration of the compost during vermicomposting has also been reported by. 71,72 Goswami et al (2016) 73 reported a steady decline in the total metal content in the vermicomposted products suggesting that, a considerable amount of metals may be accumulated by the earthworms. Earthworms play a vital role in immobilization of metals by the process of metal detoxication via vermiremediation technology.…”

Natural Organic Compounds for Application in Organic Farming

“…Thus, vermicomposting can biodegrade organic matter and recover valuable nutrients from diverse organic wastes [77,78]. In addition, it serves to reduce the concentrations and availability of heavy metals [79][80][81][82][83]. On the other hand, certain organic pollutants can be accumulated in the body of worms, so their content in vermicompost is significantly reduced [83].…”