TY - JOUR
T1 - Vermicomposting of Tea Factory Coal Ash
T2 - Metal accumulation and metallothionein response in Eisenia fetida (Savigny) and Lampito mauritii (Kinberg)
AU - Goswami, L.
AU - Sarkar, S.
AU - Mukherjee, S.
AU - Das, S.
AU - Barman, S.
AU - Raul, P.
AU - Bhattacharyya, P.
AU - Mandal, N. C.
AU - Bhattacharya, S.
AU - Bhattacharya, S. S.
PY - 2014/8
Y1 - 2014/8
N2 - Earthworms can accumulate heavy metals in their intestines to a great extent. Impact of feed materials and duration of metal exposure on natural activity of earthworms are rather unclear; this investigation therefore addresses the impact of metal rich Tea Factory Coal Ash (TFCA) on reproduction, composting and metal accumulation ability of Eisenia fetida and Lampito mauritii. Earthworm count and cocoon production increased significantly during vermicomposting. pH of the vermicomposted mixtures shifted toward neutrality, total organic C decreased substantially and total N enhanced significantly compared to composting. High heavy metal (Mn, Zn, Cu, As) accumulation was recorded in the intestine of both the earthworm species. Moreover, gradual increase in the metal-inducible metallothionein concentration indicated the causal mechanism of metal accumulation in these species. TFCA. +. cow dung (CD) (1:1) were most favorable feed mixture for E. fetida and TFCA. +. CD (1:2) were good for L. mauritii in regard to metal accumulation and compost quality.
AB - Earthworms can accumulate heavy metals in their intestines to a great extent. Impact of feed materials and duration of metal exposure on natural activity of earthworms are rather unclear; this investigation therefore addresses the impact of metal rich Tea Factory Coal Ash (TFCA) on reproduction, composting and metal accumulation ability of Eisenia fetida and Lampito mauritii. Earthworm count and cocoon production increased significantly during vermicomposting. pH of the vermicomposted mixtures shifted toward neutrality, total organic C decreased substantially and total N enhanced significantly compared to composting. High heavy metal (Mn, Zn, Cu, As) accumulation was recorded in the intestine of both the earthworm species. Moreover, gradual increase in the metal-inducible metallothionein concentration indicated the causal mechanism of metal accumulation in these species. TFCA. +. cow dung (CD) (1:1) were most favorable feed mixture for E. fetida and TFCA. +. CD (1:2) were good for L. mauritii in regard to metal accumulation and compost quality.
KW - Eisenia fetida
KW - Heavy metal
KW - Lampito mauritii
KW - Metallothionein
KW - Tea Factory Coal Ash
UR - http://www.scopus.com/inward/record.url?scp=84901939407&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2014.05.032
DO - 10.1016/j.biortech.2014.05.032
M3 - Article
C2 - 24907568
AN - SCOPUS:84901939407
SN - 0960-8524
VL - 166
SP - 96
EP - 102
JO - Bioresource Technology
JF - Bioresource Technology
ER -