The sludge was characterized according to ABNT NBR /, following the procedures for obtaining leached extract (ABNT NBR /), to classify . Brazilian Association of Technical Norms, in ABNT NBR Procedure for obtention leaching extract of solid wastes (Rio de Janeiro, ), p. 16 8. Brazilian Association of Technical Regulation. Procedures for obtainment of leaching extract from solid residues. Rio de Janeiro: ABNT (NBR ).
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Figure 2 presents the visual aspects of the compositions utilized. Revista Escola de Minas, 68 3 Rio de Janeiro, b. Thus, alternatives for disposal and application of sludge as agricultural inputs should be investigated to mitigate these issues.
The annual global of ceramic for masonry production is currently around billion and abnf demand is expected to grow steadily.
American Public Health Association,p. Seven CRTs monitors were submitted to the Brazilian standard leaching procedure to evaluate their hazard potential. MedCrave Group Danforth Rd. The results expressed in Figure 1 indicate that samples containing approximately Improper WEEE handling and recycling may lead bbr health problems as these equipment contain harmful substances such as toxic metals and flame retardants Lecler et al.
Results and Discussion 3. Services abmt Demand Journal. The waste was classified based on the American methodology SW B, 29 and the Brazilian technical references: Table 2 shows the chemical composition of the raw materials obtained by X-ray fluorescence spectrometry FRXwhere it is possible to verify the predominance of silica SiO 2 and alumina Al 2 O 3 in all samples.
Figure 2 Linear thermal retraction of the formulations studied.
In this study, we focused on characterizing sludge and evaluating its use in paving, which showed satisfactory results for use in base and sub-base floors. Standard methods for the examination of water and wastewater.
Chemically, the residue showed larger amounts than those found in the literature of both aluminum and iron oxides, indicating that the use of coagulants exceeded the values of other WTPs, due to impurities present in these waters. This statement encourages researches that aim to remove the lead from the waste CRT.
After sintering, the samples were submitted to tests to determine water absorption WAbs.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 100005, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. In this scenario of great immediacy, new studies on sludge management are being developed; among them, there is its use as a power source, which despite being promising has not demonstrated viability yet.
Adapted from ABNT b. The most acceptable technologies are those that provide reincorporation of wastes into nature, with no harmful properties to the local flora and fauna. Comparing the values of the physical-mechanical properties with the ABNT NBR specifications previously abnh in Table 3it was verified that: Cathode ray tube CRT monitors are electronic equipment mainly made of glass, polymers and metals.
The results were obtained from the arithmetic averages of three replicates nr their respective standard deviations. Sample F displayed the best results as it was able to reduce the 1005 in the glass to a minimum in comparison to the other 5 samples.
Rotator for non volatile substances TE-743
Table 3 shows the parameters tested for toxicity in the leaching test. In this work, three types of residues as an additive to ceramic mass were investigated for the production of ceramic coating. Study for vitreous waste recovery in the formulation of heavy clay ceramics.
The samples are press with diameters of 73 mm and thickness of annt mm identified, weighed, and measured. The model bnr faithfully describe the resilient behavior of the material, assessing its deformation, accurately. Among the main waste destinations in use nowadays, we may cite storage in large tanks method that requires large areasdisposal into landfills process considered uneconomic and launching into waterways and the ground environmentally incorrect.
The next step was intended to evaluate whether the lead removal had been able to convert the CRT from a hazardous waste to a non-hazardous waste according to the Brazilian regulation.
Study for vitreous waste recovery in the formulation of heavy clay ceramics
The STP sludge residue has high organic matter content, which was confirmed by chemical analysis that found different oxides within the sample.
Differential Thermal Analysis and thermogravimetry The Figures 3 and 4 show the results of differential thermal analysis and thermogravimetry for the sludge from STP and WTP, respectively. Wastes that are not bant in the NBR should be classified according to their leaching potential, which is evaluated ngr the NBR The parameters of the compound models referring to the mixtures are shown abjt Table 6. Their results were obtained from the arithmetic averages of three replicates with their respective deviation standards.
In compliance with the TRB rating, an A soil type is regarded as good to excellent for paving uses. In order to open 100005 vacuum sealed tubes, the monitors were placed behind a wooden shield and the metallic threads were removed using a set of pliers. The following properties were determined: This study ranks waste of CRT monitors according to Brazilian NBR ABNT, a norm and performs different detoxification methods to evaluate their efficiency in downgrading a hazardous waste to a non-hazardous waste.
Sampling occurred in Februarycollecting about 90 kg sludge and packaging in 30 kg nbt barrels. The SWTS was also classified as Class IIa not inertwith the iron, chromium, cadmium and manganese and lead values above the maximum limit.
Collection was performed in Februaryis collecting around 90 kg sludge that was packed in plastic drums of 30 kg. Effect on aesthetic quality and physical properties.