Co-composting and vermicomposting of coal fly-ash with press mud: Changes in nutrients, micro-nutrients and enzyme activities

Karwal, Minakshi; Kaushik, Anubha

doi:10.1016/j.eti.2020.100708

Cited by 55 publications

(19 citation statements)

References 66 publications

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“…The increase in TN in vermicomposts is also due to inclusion of mucus, body uid of earthworms, their excretory products and dead earthworm tissues (Bhat et al, 2015). The results of this study are similar to Karwal and Kaushik (2020) who reported maximum increase in TN content in 3:1 combination (Buffalo Dung + Pressmud: Fly ash) after vermicomposting for 90 days.…”

Section: Changes In Total Nitrogen (Tn) Total Phosphorus (Tp) and Total Potassium (Tk) Contentsupporting

confidence: 86%

Cow dung and tea waste amendments enhance the biotransformation of textile mill sludge into vermicomposts using Eisenia fetida

Badhwar

Singh

2021

Preprint

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Vermicomposting of textile mill sludge (TMS) with cow dung (CD) and tea waste (TW) as amendments was done in seven different combinations using Eisenia fetida for 90 days. Results revealed that pH decreased from 7.68–8.63 to 7.09–7.59. TOC content and C/N ratio reductions were in range of 15.71–20.08% and 39.33–50.05% respectively (P < 0.05). The macronutrients in the form of TN, TP and TK increased 0.38–0.64 folds, 1.07–2.27 folds and 0.56–1.98 folds respectively after the end of bioconversion process (P < 0.05), among increases in ash content and EC. The biomass and cocoon production of E.fetida increased significantly (P < 0.05), while increasing mortality rate of earthworms was observed in treatments containing 50% or more TMS content. The bacterial population beneficial for degradation of organic matter increased significantly over initial substrates (P < 0.05). Increased humification index in the end product indicated better maturity of vermicompost as observed in treatments containing higher proportions of amendments. The addition of amendments favored earthworm activity which significantly decreased the heavy metal concentration (Fe, Cu, Pb, Zn) in the end product. The study concluded that sustainable utilization of TMS could be achieved for the cleaner and enriched vermicompost production by addition of amendments CD and TW in proportions of 50% and above.

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Section: Changes In Total Nitrogen (Tn) Total Phosphorus (Tp) and Total Potassium (Tk) Contentsupporting

confidence: 86%

Cow dung and tea waste amendments enhance the biotransformation of textile mill sludge into vermicomposts using Eisenia fetida

Badhwar

Singh

2021

Preprint

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“…Sugarcane press mud increases soil pH and nutrient availability due to the presence of calcium oxide (CaO) and base cations which reduces the Cd toxicity in plants [80]. Because of the alkaline nature of SPM, OH-ions are released into the soil solution, which increases the soil pH and creates binding sites for Cd adsorption and complexation, consequently reduced Cd uptake by plants [81][82][83][84] Moreover, the presence of organic matter present in SPM reduces the Cd uptake and availability by forming organic complexes with Cd [84]; therefore, PMS decreased the Cd accumulation in plant roots and above ground parts (Table 3). The precipitation is considered to be a main mechanism of Cd immobilization as metal-phosphate, owing to the presence of phosphate in OA [32].…”

Section: Discussionmentioning

confidence: 99%

Mitigation of Cadmium Induced Oxidative Stress by Using Organic Amendments to Improve the Growth and Yield of Mash Beans [Vigna mungo (L.)]

et al. 2021

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Cadmium (Cd) stress is a serious environmental hazard that has devastating impacts on plant growth and productivity. Moreover, the entrance of Cd into the human food chain by eating Cd-contaminated food also poses serious health issues. Organic amendments (OA) possess an excellent potential to reduce the adverse impacts of Cd stress. Therefore, the aim of this study was to determine the potential of different OA in improving the mash beans growth and yield grown under Cd-contaminated soil. The soil was spiked with different concentrations of Cd (0, 10 and 20 mg/kg) and subjected to different OA, i.e., control, cow manure (5%), sugarcane press mud (5%) and a combination of cow manure (2.5%) and sugarcane press mud (2.5%). Results indicated that Cd stress induced a significant reduction in growth and yield traits, leaf water status, photosynthetic pigments, protein accumulation and anti-oxidant activities. However, the application of OA appreciably reduced the Cd-induced toxic effects and caused a significant increase in growth and yield. The application of 5% sugarcane press mud remained the top performer and it increased the mash bean growth and yield through improved photosynthetic pigments, leaf water status (56%) and reduced Cd uptake (18%), hydrogen peroxide (H2O2) production (38.52%), electrolyte leakage (EL) (42.13%) malondialdehyde (MDA) accumulation (55.88%) and increased accumulation of soluble protein (60.15%) and free amino acids (54%) through improved activities of anti-oxidant enzymes. Therefore, these findings suggested that the application of sugarcane press mud enhanced the growth and yield through reduced Cd accumulation, enhanced photosynthetic pigments, leaf water status, protein and amino accumulation and reduced H2O2, EL and MDA accumulation through a stronger anti-oxidant defense system.

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“…Thenceforth, the utilization of earthworms in waste management practices has been widespread and well documented in published scientific literature on wastes from several and diverse industries. For instance, the latest studies reported have been rice straw [19] or fly ash [20], to point a couple of examples out.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Vermicomposting of Spent Coffee Grounds and Silverskin from Coffee Industries: A Laboratory Study

et al. 2020

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In the coffee industry, several by-products are generated during the production and consumption of coffee and represent an important waste from an environmental viewpoint. For improving the knowledge about this issue, a laboratory vermicomposting study of coffee silverskin (CS) and spent coffee grounds (SCG) spiked with mature horse manure (HM) in different proportions and using earthworm Eisenia andrei was carried out. The 60-day study focused on biological parameters such as total biomass gain, growth rate, cocoon production, and mortality. This study also investigated whether the vermicompost obtained could be useful and lacked toxicity through a seed germination test using hybrid wheat seeds. Results showed a disparity depending on the type of residue and the mixture used. Best options were those treatments with a medium–low amount of residue; 25% for SCG and 25% or 50% for CS. In addition, lack of toxicity was confirmed in all treatments. In conclusion, it is possible to carry out a vermicomposting of SCG and CS with some specific features.

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Co-composting and vermicomposting of coal fly-ash with press mud: Changes in nutrients, micro-nutrients and enzyme activities

Cited by 55 publications

References 66 publications

Cow dung and tea waste amendments enhance the biotransformation of textile mill sludge into vermicomposts using Eisenia fetida

Cow dung and tea waste amendments enhance the biotransformation of textile mill sludge into vermicomposts using Eisenia fetida

Mitigation of Cadmium Induced Oxidative Stress by Using Organic Amendments to Improve the Growth and Yield of Mash Beans [Vigna mungo (L.)]

Feasibility of Vermicomposting of Spent Coffee Grounds and Silverskin from Coffee Industries: A Laboratory Study

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