PURPOSE: Provided is additive composition for rapidly decomposing plastic products such as disposable plastic containers or vinyl package and for controlling time for the decomposition. CONSTITUTION: The composition comprises 70-80 parts by weight of calcium carbonate, 10-20 parts by weight of ...
This type of thermal decomposition is called pyrolysis.这种类型的热分解反应称做热解。 The sewage has been activated to aid with decomposition.为了帮助物质分解,污水已经用曝气处理法净化过了。 Warmer weather meant the decomposition of the corpse.天气变暖会使尸体腐烂。 A plastic sheet was pegged down ...
Estimated lifetime of plastic bags Equation (2) was used to calculate biodegradation weight loss per initial area per day (μg/cm2/day), and the data were standardized. This allows for data comparisons of biodegradation tests conducted in different marine environments. $$V(\mu g/c{m}^{2}...
Isoproturon, diuron, and parathion methyl were all eliminated 70% of the time, however atrazine was only removed 50% of the time. Atrazine clearance increased to 90% when ozonation was supplemented with activated carbon and 20 mg Al/L, while the remaining three pesticides were completely ...
Carcasses were placed into scavenger prevention enclosures (1.19 × 0.74 × 0.81 m) containing plastic trays to allow fluids to pool. Aliquots were collected using sterile 60-mL syringes, transferred to sterile Whirl–Pak bags, and frozen at – 20 °C until the start of the ...
(0–937 µg N g−1) tended to increase with incubation time in the lab (Supplementary Fig.1a). For the geochemical predictors, soil pH was 4.0–9.2, and soil particle size (silt+clay, 5–91%) and metals had at least one order of magnitude difference among sites (0–30...
where t is the time, T is the temperature, [Math Processing Error]α is the degree of transformation ([Math Processing Error]0≤α≤1), [Math Processing Error]EA and A are the activation energy and the pre-exponential term of the rate constant, respectively, [Math Processing Error]RG is...
Nanoplastic particles of 100 nm and 1000 nm polystyrene were used (Sigma-Aldrich; 100,000 mg L-1 aqueous suspensions); they were devoid of stabilizers or additives. NPPs have sulphate groups on their surface and have a zeta potential of − 50 to − 60 mV. Plastic aqueous suspensions we...
of postural and movement features, and ultimately into a time-resolved ethogram (Fig.1band “Methods”). The animals’ combined ethogram consisted of 44 independent modular actions (Fig.1cand Supplementary Figs.4and5)comprised of unique composites of rudimentary pose and movement features (...
During this time, prolonged periods of stagnant water were avoided by accelerating through flow using a soft vacuum of ~500 mbar for a maximum of five minutes. Immediately after the last leachate sampling, the sand and litter mixtures were sampled destructively into sterile falcon tubes for ...