Vermiconversion of industrial sludge for recycling the nutrients

Sangwan, Pritam; Kaushik, C. P.; Garg, V.K.

doi:10.1016/j.biortech.2008.04.022

Cited by 52 publications

(27 citation statements)

References 23 publications

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“…Adequate nutrition is required to support growth and reproduction in earthworms (Sangwan et al, 2008) and the cocoon density found here can be interpreted as an indicator of adequate nutrition and affirmation of the vermicomposting process in the treatment jars (Dominguez & Edwards, 2011). Nevertheless, being a closed experiment, the process was far from optimized; Eisenia sp.…”

Section: Resultsmentioning

confidence: 82%

The Effectiveness and Safety of Vermi- Versus Conventional Composting of Human Feces with Ascaris suum Ova as Model Helminthic Parasites

Hill¹,

Lalander²,

Baldwin³

2013

JSD

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Composting toilets have been promoted for management of human waste at remote sites in parks and alpine areas of recreation, but they may not be effective for producing a stable and safe end product. Vermicomposting has been shown to result in a more degraded final product but its effectiveness for pathogen destruction was unclear due to conflicting information in the literature. This study sought to resolve the debate on whether or not vermicomposting could produce a hygenic end product that would be safe for disposal locally. Vermicomposting was tested for destruction of the model pathogens, helminthic parasites, in an experiment with highly concentrated and viable Ascaris suum (2626±1306 ova/g, 61.6±8.7% viable) inoculated into fecal matter and coir (30:70 ratio) with and without Eisenia fetida worms. After 90 days at 19±3 ºC six, eight, and 12 worms were found alive with no significant difference between treatments or through time found in TS% (12-15%), ova concentration and ova viability. A 100 times reduction in the concentration of Escherichia coli resulted from the worm treatment versus the control. Significantly higher nitrate (22 735±4 741 mg/kg NO 3 -) and lower pH (pH 4.60±0.01) were found in the treatment as compared to the control (5 078±2 167 mg/kg NO 3 -) (pH 6.56±0.30). Despite these improvements in fecal matter processing, vermicomposting was found ineffective at reducing Ascaris suum ova concentration and viability. Decentralized vermicomposting can efficiently stabilize and mature fecal matter; however prior to unrestricted end product use, an additional sanitation step is necessary.

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Section: Resultsmentioning

confidence: 82%

The Effectiveness and Safety of Vermi- Versus Conventional Composting of Human Feces with Ascaris suum Ova as Model Helminthic Parasites

Hill¹,

Lalander²,

Baldwin³

2013

JSD

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“…The nutrient content (nitrogen, phosphorus, potassium) was more in final products of vermicomposting as compared to initial raw material and concluded that pressmud can be managed into useful fertilizing product, if mixed at maximum 50% with horse dung. Sangwan et al [19] also reported vermicomposting of sugar mill sludge mixed with biogas plant slurry using earthworm E. fetida. The results also showed reduction in pH, total organic carbon, carbon to nitrogen ratio and total potassium, but increase in total nitrogen and total phosphorus was observed in the final feed mixtures.…”

Section: Nutrients/chemical Changes Of Wastesmentioning

confidence: 99%

“…However increasing concentrations of pressmud sludge affected growth and reproduction of earthworms. Sangwan et al [19] observed that the earthworm E. fetida grow and reproduce in 20% pressmud + 80% biogas plant slurry feed mixture which was higher from other feed mixtures. Suthar [35] compared pilot scale vermicomposting and small scale vermicomposting reactors in terms of nutrient content and earthworm growth parameters during vermicomposting of sewage sludge amended with sugarcane trash.…”

Section: Growth Studiesmentioning

confidence: 99%

Management of Sugar Industrial Wastes through Vermitechnology

Bhat

Singh

2016

ILNS

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Abstract. The present paper discusses the role of earthworms in recycling of sugar industrial wastes. The wastes generated from sugar industry are pressmud, bagasse, bagasse fly ash, sugar cane trash, sugar beet mud, sugar beet pulp, molasses etc. These wastes when mixed with other organic substrates become ideal mixtures for growth of earthworms. These wastes if stored in open field's causes contamination in the environment and may cause several diseases in public health. But the governments have been unable to tackle the menace of solid waste pollution due to dearth of appropriate technologies, finance and space. Therefore, environment friendly and cost effective technologies for nutrient recycling or remediation of wastes are being advocated as an alternative means for conserving and replenishing natural resources of the ecosystems. Vermicomposting is one such technology that synergises microbial degradation with earthworm's activity for reducing, reusing and recycling waste materials in a shorter span of time. Earthworm technology can convert sugar industrial wastes into valuable fertilizing material. The final product (vermicompost) produced during the process of vermicomposting is nutrient rich organic fertilizer with plant available nutrients such as nitrogen, potassium, calcium and phosphorus. In the present study an attempt has been made to document the role of earthworms in reuse of sugar industry waste.

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“…The decrease of potassium in soil in the presence of earthworms was previously found in fi eld literature [32][33][34], and this aspect necessitates further investigation. The fi ndings of Sangwan et al (2008) [35] [38] studied the potential of Eisenia fetida to improve the fertility of soil by comparing sewage sludge with and without earthworm treatment, and their results showed that earthworm activity had no signifi cant effect on the contents of total and available potassium.…”

Section: Resultsmentioning

confidence: 99%

Survival, Weight, and Prolificacy of Eisenia fetida (Savigny 1826) in Relation to Food Type and Several Soil Parameters

Iordache¹

2018

Pol. J. Environ. Stud.

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Vermiconversion of industrial sludge for recycling the nutrients

Cited by 52 publications

References 23 publications

The Effectiveness and Safety of Vermi- Versus Conventional Composting of Human Feces with Ascaris suum Ova as Model Helminthic Parasites

The Effectiveness and Safety of Vermi- Versus Conventional Composting of Human Feces with Ascaris suum Ova as Model Helminthic Parasites

Management of Sugar Industrial Wastes through Vermitechnology

Survival, Weight, and Prolificacy of Eisenia fetida (Savigny 1826) in Relation to Food Type and Several Soil Parameters

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