Optimal conditions to produce extracts of compost and vermicompost from oil palm and coffee pulp wastes

Flores-Solórzano, Samia B.; Huerta-Lwanga, Esperanza; Cuevas-González, Raúl; Guillén-Navarro, Karina

doi:10.1007/s10163-022-01365-1

Cited by 6 publications

(1 citation statement)

References 32 publications

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“…In this way, those materials should be considered as new resources and not as useless materials [6]. This would contribute to reducing the economic and the environmental concerns of this industry and to the valorization of these organic valuable resources, in breach of the waste hierarchy in force in the EU Waste Framework legislation and in accordance with the basic principles of the circular economy, as well as contributing towards sustainable and climate-smart agriculture and reducing the global warming due to greenhouse gas emissions [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Vermicomposting of Lavender Waste: A Biological Laboratory Investigation

et al. 2022

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In the present work, lavender waste, a residue of the essential oil extract industry, was used to feed Eisenia andrei with mature horse manure at ratios of 0:100, 25:75, 50:50, 75:25 and 100:0 on dry weight basis. Vermicomposting was carried out for 70 days in laboratory conditions. Biological parameters such as population build-up, total biomass, mortality and cocoon production were observed and measured. Increasing concentrations of waste affected positively the growth and reproduction of worms in a significant way. The 100% lavender waste combination showed the best cocoon production and even tripled their biomass in the first week. A seed germination test was also made, where no evidence of toxicity was found. The germination index range was, in general terms, above 100. The results indicated that the earthworm E. andrei was able to transform lavender waste into compost and thus play a major role in industrial waste management and apply circular economy.

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Section: Introductionmentioning

confidence: 99%

Vermicomposting of Lavender Waste: A Biological Laboratory Investigation

et al. 2022

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Effect of the mixing ratio on the composting of OFMSW digestate: assessment of compost quality

Núñez

Pérez

Leon-Fernández

et al. 2022

J Mater Cycles Waste Manag

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This study presents the results obtained in compostability tests of organic fraction of municipal solid waste (OFMSW) digestate. The final aim was to obtain mature compost without phytotoxic effects. For the evaluation of the composting process, a novel parameter describing the performance of the composting process, the relative heat generation standardized with the initial volatile solid content (RHGVS0), was defined and evaluated at laboratory-scale. From these laboratory-scale test, the optimum operational conditions were obtained, a mixing ratio (v/v) of 1:1:0 (bulking agent:digestate:co-substrate) and with 15% of mature compost as inoculum. Subsequently, these optimum operational conditions were applied in the active phase of the composting pilot-scale reactor. The active composting stage took 7 days, subsequently a curing phase of 60 days was carried out at ambient conditions. After 30 days of curing, the mature compost showed a specific oxygen uptake rate (SOUR) of 0.14 mg O2/g VS·h, a germination index (GI) of 99.63% and a low volatile fatty acids (VFA) concentration (41.3 AcH mg/kgdm), being indicative of the good compost stability and maturity of the compost. The very good quality of the final compost obtained indicated that the RHGVS0 accurately describes the performance of the composting process.

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The impact of the pyroligneous acid-assisted biomass ash vermicompost on dry beans through climatic and agroecosystem changes

Özdemir

Turp

2022

J Mater Cycles Waste Manag

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Optimal conditions to produce extracts of compost and vermicompost from oil palm and coffee pulp wastes

Cited by 6 publications

References 32 publications

Vermicomposting of Lavender Waste: A Biological Laboratory Investigation

Vermicomposting of Lavender Waste: A Biological Laboratory Investigation

Effect of the mixing ratio on the composting of OFMSW digestate: assessment of compost quality

The impact of the pyroligneous acid-assisted biomass ash vermicompost on dry beans through climatic and agroecosystem changes

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