Vermicomposting of citronella bagasse and paper mill sludge mixture employing Eisenia fetida

被引:83
作者
Boruah, T. [1 ]
Barman, A. [1 ]
Kalita, P. [1 ]
Lahkar, J. [2 ]
Deka, H. [1 ]
机构
[1] Gauhati Univ, Dept Bot, Environm Bot & Biotechnol Lab, Gauhati 14, Assam, India
[2] North East Inst Sci & Technol, CSIR, Jorhat, Assam, India
关键词
Vermicomposting; Eisenia fetida; Citronella bagasse; Paper mill sludge; Humification index; C/N ratio; TREATMENT-PLANT SLUDGE; SEWAGE-SLUDGE; HEAVY-METALS; NUTRIENT RECOVERY; WASTE; COMPOST; VERMIREMEDIATION; SPECTROSCOPY; FEASIBILITY; EARTHWORMS;
D O I
10.1016/j.biortech.2019.122147
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The vermicomposting potential of Eisenia fetida on citronella bagasse and paper mill sludge mixture was studied. The experiment was carried out in pots by taking a mixture of citronella bagasse and paper mill sludge in 3:2 ratios. The physico-chemical properties such as pH, conductivity, total organic carbon, nitrogen, phosphorus, potassium, calcium, trace elements and heavy metals were studied in the end products. The ash content, humification index, C/N ratio and scanning electron microscopic analysis were done to understand the maturity of the vermicompost. Results revealed that bioconversion of citronella bagasse and paper mill sludge mixture is accompanied with reduction of C/N ratio and humification index; enhancement of nutrients profile, nitrogen fixing, phosphate and potassium solubilizing bacterial population. SEM analysis showed that there was more disintegration in vermicompost samples than the initial raw materials and compost. Further, earthworm population and biomass has significantly increased by the end of the experimental trials.
引用
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页数:8
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