Circular economy aims to eliminate organic waste through its transformation, composting and processing into other products or energy. The main aim of the study was determine specific methane yield (SMY) anaerobic digestion (AD) four different fruit vegetable residues (FVR). In addition, reduction in greenhouse gas (GHG) emissions calculated based on assumption that maize will be replaced by FVR...

to evaluate the effect of application of municipal solid waste compost (mswc) on the accumulation of heavy metals of lead, nickel and cadmium in the soil under maize cultivation, a factorial experiment in base randomized complete block design (rcbd) with four different amounts of municipal solid waste compost (zero, 15, 30 and 60 tons ha-1) and time (compost applied once or twice) was performed...

This study elucidated the impact of sewage-sludge (SS) and olive-mill-waste (OMW) biochar amendments to soil using tomatoes as a test crop. Four treatments were evaluated: “control” with no amendment, two SS addition 10 t/ha 25 t/ha, respectively, an OMW treatment t/ha. Higher yields observed in both treatments, providing evidence that acts plant bio-stimulant. Biochar application had positive ...

in this study chemical method of dissolution-precipitation was applied to produce amorphous silica nanoparticles from rice straw ash (rsa), the waste material of rice cultivation. the morphology, particle size, structure and area of specific surface of synthesized amorphous silica nanoparticles were evaluated using transmission electron microscopy (tem), x-ray diffraction analysis (xrd) and bet...

background: dental wastes are one of the environmental issues due to toxic and pathogenic agents such as pathological wastes, pharmaceutical and chemical etc have particular sensitivity. the aim of this study was to determine the dental waste management and related factors in the city of ilam. methods: in this cross-sectional study, the studied community was all the sixteen dental clinics in il...

Innovative and decentralized biorefineries are needed in urban areas to contribute local resource efficiency. In this case study a biorefinery (waste-to-resource-unit, W2RU) is introduced for bioconversion of food waste using heterotrophic microalgae protein-rich biomass, simultaneous extraction high-value chemicals pigments (e.g., astaxanthin, β-carotene, lycopene, lutein, or riboflavin), vita...