Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Santana, José Marcos; Fraga, Sheila Vilas Boas; Zanatta, Maraline Conservani Klingohr; Martins, Mirian Franzoloso Santos; Pìres, Marta Siviero Guilherme

doi:10.1016/j.heliyon.2021.e06771

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…In this study, the compost-based biosolid significantly impacted the micronutrient content (Cu, Fe, Mn, and Zn) in basil leaves in plants grown in coloso and voladora soils. Santana et al [32] stated that tropical agricultural soils amended with biosolids increased their nutri-tional potential. In the coloso soil (Figure 9), a mixture of 25 comp/75 soil increased the Mn and Zn uptake, indicating the positive impact of compost on micronutrients' availability.…”

Section: Effects Of Biosolid (Compost and Sludge) Incorporation Into ...mentioning

confidence: 99%

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Biosolid Mixtures Applied in Tropical Soils and Their Effect on Coriandrum sativum and Ocimum basilicum Nutritional Uptake

Lugo-Avilés,

López-Moreno,

Roman-Velazquez

et al. 2024

Agriculture

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Agricultural soils are degraded worldwide as result of anthropogenic activities; environmental contamination; and excessive use of chemicals, fertilizers, and pesticides. Scientists are concerned about this problem; during the past few years sewage compost and sludge have been used as alternatives to improve the soil’s physical and chemical characteristics. Recycling solid waste residues can be a cost-effective way to reduce landfill material disposal and improve macro and micronutrients’ availability in agricultural soils. In this study, two types of biosolids (compost and sludge) were added to tropical soils (coloso and voladora series) to improve the nutritional content in two edible herbs (basil and coriander). Soil mixtures were made by volume percentage; compost was constant, at 25%, and soil and sludge were incorporated in different proportions to complete the 100% (25 comp/75 soil, 25 comp/62.5 soil/12.5 sludge, 25 comp/50 soil/25 sludge and 25 comp/37.5 soil/37.5 sludge). pH and electrical conductivity were measured in soil mixtures. Basil and coriander were cultivated in pots for 30 days at an open greenhouse (5 replicates per soil mixtures). Germination percentage, stems’ length, total chlorophyll (SPAD 502), acid digestions of plant tissues and an ICP-OES analysis were performed for both plants cultivated in all the soil mixtures. In voladora soil, the pH increased from 4.55 ± 0.10 to 5.64 ± 0.22 and EC from 0.0563 ± 0.0003 dS/m to 1.39 ± 0.01 dS/m in a 25% comp/37.5% soil/37.5% sludge mixture. In the coloso soil, the pH increased from 6.38 ± 0.13 to 6.82 ± 0.07 and electrical conductivity from 0.117 ± 0.001 to 1.310 ± 0.009 dS/m in 25% compost/37.5% soil/37.5% sludge mixture. Significant differences (p < 0.05) were found in the chlorophyll content and stem length for both plants. The highest chlorophyll value was in basil leaves from a 25% compost/50% soil/25% sludge mixture (43.20 ± 074) compared to the coloso soil (26.99 ± 0.43). In the voladora soil, the highest chlorophyll content was in a 25% compost/37.5% soil/37.5% sludge mixture (39.97 ± 0.83). In coriander leaves, the highest chlorophyll content was 33.01 ± 0.84 in the 25% compost/62.5% coloso/12.5% sludge mixture. In the voladora soil, chlorophyll content in leaves did not show a significant difference between treatments. Larger basil stems were found at 25% compost/75% voladora mixture (17.50 ± 2.39 cm) and in a 25% compost/62.5% coloso/12.5% sludge mixture (9.95 ± 0.71 cm) compared to control plants (3.45 ± 0.18 cm). Greater coriander stems were observed in a 25% compost/50% voladora/25% sludge mixture (2.43 ± 0.11 cm) and in a 25% compost/50% coloso/25% sludge mixture (2.17 ± 0.10 cm) compared to control plants (2.05 ± 0.07 cm). Macro and micronutrient content in plants increased with biosolids’ incorporation to soils. Mg content in basil leaves increased from 8.61 ± 0.70 mg/g in the voladora soil to 10.31 ± 0.60 mg/g in a 25% compost/37.5% soil/37.5% sludge mixture. In coriander leaves, Mg increased from 6.91 ± 0.06 mg/g in a 25% compost/75% soil mixture to 9.63 ± 0.02 mg/g in a 25% compost/50% soil/25% sludge mixture. The Mn uptake by basil leaves increased from 0.076 ± 0.005 mg/g in the coloso soil to 0.152 ± 0.019 mg/g in a 25% compost/75% soil mixture. In coriander leaves, Mn increased from 0.357 ± 0.002 mg/g in a 25% compost/75% soil mixture to 0.651 ± 0.006 mg/g in a 25% compost/37.5% soil/37.5% sludge mixture.

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Section: Effects Of Biosolid (Compost and Sludge) Incorporation Into ...mentioning

confidence: 99%

mentioning

confidence: 99%

Biosolid Mixtures Applied in Tropical Soils and Their Effect on Coriandrum sativum and Ocimum basilicum Nutritional Uptake

Lugo-Avilés,

López-Moreno,

Roman-Velazquez

et al. 2024

Agriculture

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“…At present in Morocco, the country has over 131 WWTPs using a variety of wastewater treatment processes, including natural lagooning, activated sludge [6] and aerated lagooning [7]. Dewatered sludge is a great advantage for agricultural soils, because it is rich in nutrients such as phosphorus and nitrogen, which are essential for plant growth [8].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal characterization of dewatered sludge from the Kenitra wastewater treatment plant (Morocco) for agricultural use

Sahraoui,

Mekaoui

et al. 2024

E3S Web Conf.

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The wastewater treatment plant (WWTP) of the city of Kenitra treats urban wastewater, this said treatment produces significant quantities of dehydrated sludge which are then placed in the public dump. The valorization of the dehydrated sludge of the WWTP-Kenitra became a priority, seen the enormous quantities produced of their complex and heterogeneous composition. Objective: It is in this present work which aims at following the fate of the dehydrated sludge of the WWTP-Kenitra after their dehydration as well as their characterization by the analysis of the heavy metals in order to study the possibility of their valorization with one of the dies answering the protection of the environment. Results: The results of the analyses of the composition of the dehydrated sludge in Metallic Traces Element is in conformity with the standards AFNOR and the directive 86/278/CEE of the European Commission and does not reflect any danger in their use for the agriculture. Conclusion: The valorization of the sludge of the WWTP of the city of Kenitra is encouraged.

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“…Animal-based organic fertilizers and sewage sludge are characterized by a large diversity in the content of basic mineral components, which are important in terms of fertilization usefulness. Comparing sewage sludge to slurry (bovine and pig) or manure (chicken, turkey and cattle) [21][22][23][24][25][26][27][28][29][30], the highest contents for N, P and Ca are found in sewage sediments.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals in Fly Ash as a Factor Limiting Its Use in Fertilizing Composts

Malarski

Wichowski

Czajkowska

2023

Water

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Composting enables the recycling of significant amounts of biodegradable waste, while ensuring its disposal. The addition of fly ash increases the concentration of fertilizing substances in the compost. Compost is a source of many nutrients for plants. The addition of fly ash might also cause a slower release of these nutrients into an aqueous solution, meeting the fertilization needs of plants over a longer period of time. Tests were carried out using sewage sludge (WWTP Piaseczno, 163,500 P.E.), straw as a structure-forming material and fly ash (WWTP Krakow, 780,000 P.E.). The compost obtained in the research was analyzed in terms of environmental conditions specified in legal regulations. The most favorable compost mass density (520 kg/L) and the amount of air supplied to the process (5.0 L/(h∙kg d.m.)) were determined. The addition of fly ash to the compost mass did not significantly affect the temperature distribution obtained in the process. The increase in fly ash content increased the pH of the compost mass and was associated with higher nitrogen losses. It was found that the factor which may limit the possibility of using fly ash as a compost substrate is the presence of higher concentrations of heavy metals, especially chromium. It was determined that the maximum addition of fly ash to the compost mass was 154 kg d.m.ash/(ton d.m.straw+sludge).

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Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Cited by 9 publications

References 39 publications

Biosolid Mixtures Applied in Tropical Soils and Their Effect on Coriandrum sativum and Ocimum basilicum Nutritional Uptake

Biosolid Mixtures Applied in Tropical Soils and Their Effect on Coriandrum sativum and Ocimum basilicum Nutritional Uptake

Heavy metal characterization of dewatered sludge from the Kenitra wastewater treatment plant (Morocco) for agricultural use

Heavy Metals in Fly Ash as a Factor Limiting Its Use in Fertilizing Composts

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