Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Fachini, Jóisman; Figueiredo, Cícero Célio de

doi:10.1590/1678-4324-2022210592

Cited by 7 publications

(3 citation statements)

References 32 publications

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“…Zamotaev et al (2022) presented an overview of contemporary concepts of technogenesis and soil formation in liquidated wastewater treatment plants of former sugar plants, as well as trends in changes in soil properties under the influence of the use of waste in agriculture as organic fertilisers in various natural areas. Raček et al (2022) and Fachini and de Figueiredo (2022) presented the results of the preparation and characterisation of the dried municipal sewage sludge and the so-called solid carbonaceous product, the outcome of its further processing by slow microwave pyrolysis/torrefaction. The research aims to determine the possibility of using these products for combustion in energy production, agriculture, and blue-green infrastructure.…”

Section: Literature Reviewmentioning

confidence: 99%

Critical assessment and recommendations for sewage sludge management in Poland

Wisniewski,

Kuczmaszewski,

Halicka

et al. 2024

EiS

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The purpose of the article is to demonstrate practices used to supervise the use of sewage sludge for agricultural purposes. The presented research and conclusions are a trend analysis and are not to be used to penalise entities. Sewage sludge, which comes from the illegal dumping of wastewater into municipal wastewater by industrial plants, contains large amounts of heavy metals. Treatment plants transfer the sludge for agricultural use. Regulations specifically restrict the mode and conditions for such use of sludge. Methods: the research was carried out using a proprietary questionnaire, which is a supplement to the reporting questionnaire of the National Urban Wastewater Treatment Program implemented by the State Water Company "Wody Polskie". Results: The survey was conducted at 208 wastewater treatment plants in Poland. The results show that the majority of wastewater treatment plants do not properly supervise the process of introducing sewage sludge into the soil. They also lack supervision of how much heavy metals from wastewater are introduced into the soil. This means that there is a very high risk of contamination of agricultural soils. The results obtained could initiate a detailed analysis of this phenomenon in Poland. A comprehensive study of the scale of the practice and its current effects is required to determine the actual condition of soil treated with sewage sludge.

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Section: Literature Reviewmentioning

confidence: 99%

Critical assessment and recommendations for sewage sludge management in Poland

Wisniewski,

Kuczmaszewski,

Halicka

et al. 2024

EiS

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“…The antibiotics (sulfamethazine, tetracycline, and chloramphenicol) can be removed from the aqueous solution with original steel chips and nitrogen plasma-modified steel chips . However, through literature comparison, it was found that the metal active species in the waste slag-based adsorbent and their content had a great impact on the removal of pollutants, and the effect was not consistent. − Unlike pure synthetic adsorbents, solid waste-based adsorbents contain multiple active adsorption sites that can act simultaneously in practical applications. In addition, the competitive synergy of composite pollutants also deepens the complexity of the adsorption mechanism path.…”

Section: Introductionmentioning

confidence: 99%

Efficient Anchoring of Cu(II)–Tetracycline Complex in Paper Mill Sludge Biochar-Limited Nanospace

Zhu,

Guo,

Guan

et al. 2023

ACS EST Water

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Efficient electron transfer between pollutants and the adsorbent is the key to low-cost purification of complex water. In this work, a paper mill sludge-based porous biochar (PSC) containing many intrinsic metal active sites, carbon defects, and oxygen vacancies can accelerate the electron-transfer process and act as a trap to efficiently remove heavy metals Cu and tetracyclines in complex water bodies. The results show that in a single Cu(II)/tetracycline hydrochloride (TC) system, Fe sites had greater electronegativity and thus were easier to exchange with Cu(II). Furthermore, the presence of Ca species caused lots of carbon defects, which accelerated the surface functional group formation of PSC and thus makes TC be quickly anchored. Notably, in the Cu(II)−TC complex system, the removal efficiency of Cu(II) and TC was significantly increased. XRD confirmed that the increased Ca−O was the primary cause of carbon defects. Therefore, the presence of carbon defects and the fast electron transfer were the essential reasons for the removal of complex Cu(II)−TC by PSC. This study rationally clarified the inherent mechanism and the potential or enhancement orientation for removing Cu(II)−TC pollutants by low-cost paper mill sludge biochar.

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“…Dessa forma, a transformação desse resíduo em biocarvão, subproduto rico em carbono, através do processo térmico, pirólise, torna-se uma boa opção. Pois, esse processo transforma o biossólido em um material livre de organismos patogênicos e ricos em nutrientes como nitrogênio, fósforo, cálcio e zinco (PAZ-FERREIRO et al, 2018;FACHINI;FIGUEIREDO, 2022).…”

Section: Introductionunclassified

Caracterização Química De Biocarvões Produzidos a Partir De Biossólido E Bagaço De Cana-De-Açúcar

Souza

Alves

2023

COLLOQ EXACTARUM

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The adequate characterization of solid residues is important, as it makes it possible to estimate the variability of its composition, helping to define its use in the soil. The objective of the presente study was to characterize raw materials and biochars produced under laboratory conditions, in order to analyze their feasibiity for use in the soil. Thus, the biochars were produced from the dry sample of biosolid and, from a dry sample of sugarcane bagasse, separately, by means of slow pyrolysis at a temperature of 350°C. A design with five replications was used, where the treatments were constituted by: pure biosolid (BP); pure sugarcane bagasse (BCP); biosolid biochar (BB); sugarcane bagasse biochar (BBC). The evaluation of raw materials and biochars was through immediate analysis, hydrogenion potential, electrical conductivity, organic matter, total nitrogen, cátion Exchange capacity, and X-ray fluorescence spectrometry. The data obtained in the characterization of the materials were submited to analysis of variance by the SISVAR program. To compare the means, the Tukey test was used program. To compare the means, the Tukey test was used at 5% probability (p<0.05). BP and BB had more alcaline pH, higher ash contente, higher nitrogen content and cátion Exchange capacity. While the BCP nd BBC showed higher values for organic matter and carbono. The raw materials and their respective biochars showed characteristics suitable for agricultural use, mainly BP and BB, and BP and BB can be used as soil correctors, as They have na alcaline pH of 12.02 and 9.64.

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Pyrolysis of Sewage Sludge: Physical, Chemical, Morphological and Mineralogical Transformations

Cited by 7 publications

References 32 publications

Critical assessment and recommendations for sewage sludge management in Poland

Critical assessment and recommendations for sewage sludge management in Poland

Efficient Anchoring of Cu(II)–Tetracycline Complex in Paper Mill Sludge Biochar-Limited Nanospace

Caracterização Química De Biocarvões Produzidos a Partir De Biossólido E Bagaço De Cana-De-Açúcar

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