Microorganisms in Waste Management

Adebayo, Fagbenro Oluwafemi; Obiekezie, SO

doi:10.5958/2349-2988.2018.00005.0

Cited by 34 publications

(19 citation statements)

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“…3 show that neat PVA is characterized by a flexural modulus comparable to values typically reported in literature for thin films [24]; on the other hand, the lower values for flexural strength and strain at break are due to the incomplete densification of PVA during the compression molding; in facts, as observed in Tab. 3, the density attained at the end of the process is lower than the theoretical value for PVA, which is 1.26 g/cm 3 , and allows to estimate a void fraction of 0.18 for W50_P50. The flexural modulus of compression molded samples is not significantly modified upon addition of dSOW, as evidenced by the results of Fig.…”

Section: Resultsmentioning

confidence: 78%

“…where ρ is the measured density, and the theoretical density, estimated from the rule of mixtures, by considering a PVA density of 1.26 g/cm 3 , from the materials technical data sheet, and a measured density for dSOW of 0.99 g/cm 3 . The results reported in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…These features make SOW quite complex to be managed. It is therefore essential to develop processes which allow a decrease in the bacteriological content and a longer storage of the waste [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Biocompatible Blends Based on Poly (Vinyl Alcohol) and Solid Organic Waste

Greco¹,

Ferrari²,

Striani³

et al. 2019

Journal of Renewable Materials

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This work is aimed at the development of new green composite materials through the incorporation of the solid organic waste (SOW) in a thermoplastic matrix. After being ground, the organic waste was exposed to a sterilization process, though an autoclave cycle, in order to obtain a complete removal of the bacterial activity. The SOW was found to have a high amount of water, about 65-70%, which made uneconomical its further treatment to reduce the water amount. Therefore, a water soluble polymer, poly (vinyl alcohol) (PVA) was chosen in order to produce SOW based blends. However, in order to reduce the viscosity of the PVA/SOW slurry, further amount of water was added. The very low viscosity attained by the water suspension allowed to process the PVA/SOW blends by a pressure-free process, for the production of samples, which were afterwards subjected to physical and mechanical characterization. Flexural tests showed the promising properties of the developed blends. In particular, the relevance of porosity was assessed. Increasing the water amount involved a signification increase of porosity, due to a faster water evaporation during processing. On the other hand, compared to neat PVA, addition of SOW allowed to significantly decrease the porosity of the produced samples. Despite this, the mechanical properties of the PVA/ SOW blends were shown to be lower than those of neat PVA processed analogously.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

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Biocompatible Blends Based on Poly (Vinyl Alcohol) and Solid Organic Waste

Greco¹,

Ferrari²,

Striani³

et al. 2019

Journal of Renewable Materials

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show abstract

“…In addition, E. coli can contaminate the environment caused by untreated abattoir effluent [12]. Adebayo et al [13] stated that microorganisms in the environment have different roles such as in sewage, oil treatment, energy generation, oil spillage, and radioactive contamination. Kafle, et al [14] found in absence of predation and competition, E. coli may be a soil commensal as long as it maintains as stable populations in soil.…”

Section: Environmental Contaminationmentioning

confidence: 99%

Reducing Escherichia Coli Contamination on Dringking Water Stations in Pasuruan, East Java, Indonesia.

Winarningsih¹

2019

IJAR

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“…The most troubled waste class to be treated is surely the organic fraction of the municipal solid waste (OFMSW), due to its high-water content, that causes a rapid degradation and bacterial proliferation during its storage [5,6]. OFMSW represents more than 40% by the weight of the municipal waste [7].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Green Process for the Stabilization and Valorization of Organic Fraction of Municipal Solid Waste (OFMSW): Optimization of the Curing Process II Part

et al. 2019

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This work is focused on the optimization of an innovative and cheap process for the valorization of the organic fraction of municipal solid waste (OFMSW), through its transformation into an odorless and environmentally compatible material to be employed for building applications or as a thermal and acoustic insulator. The process starts with the grinding of OFMSW, followed by its sterilization in order to obtain a complete removal of the bacterial activity. Afterwards, the incorporation in a catalysed thermosetting matrix is carried out by mixing the OFMSW to a water soluble urea formaldehyde based resin (UF), characterized by a formaldehyde content lower than 1% wt. The OFMSW/UF blends were firstly analysed by the dynamic rheological analyses, as a function of the content of a proper catalyst, that is able to decrease the curing temperature and time. Rheological analyses results allowed the selection of times and temperatures necessary for the polymerization (T = 60 °C, t = 1 h). The effect of the presence of different additives on both the cure process and the mechanical properties of the cured samples was finally analysed, evidencing that the OFMSW/UF composites possess improved mechanical properties in comparison to that of the neat resin.

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Microorganisms in Waste Management

Cited by 34 publications

References 0 publications

Biocompatible Blends Based on Poly (Vinyl Alcohol) and Solid Organic Waste

Biocompatible Blends Based on Poly (Vinyl Alcohol) and Solid Organic Waste

Reducing Escherichia Coli Contamination on Dringking Water Stations in Pasuruan, East Java, Indonesia.

An Innovative Green Process for the Stabilization and Valorization of Organic Fraction of Municipal Solid Waste (OFMSW): Optimization of the Curing Process II Part

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