Toxicity Study of the Sanitary Wastewater Treatment Plant Sludge Aiming Its Reuse in Agriculture

França, Milena de; Emmerich, Mariana; Oliveira, Therezinha Maria Novais de; Franczack, Priscila; Maia, Bianca Goulart de Oliveira

doi:10.1007/s11270-021-05192-2

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…Some studies have shown benefits to the germination of different species by applying SAP (SU et al, 2017;CASSOL et al, 2020;ZHANG et al, 2020;JANG et al, 2021). Yonezawa et al (2017) verified a 20% increase in okra (Abelmoschus esculentus) germination with a SAP dose of 0.3%.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, before being applied in agriculture, sanitary sewage must be treated. However, studies prove minimal contaminants in sanitary sewage after treatment (BAETTKER et al, 2021;FRANÇA et al, 2021). However, research shows that this minimal load of contaminants has not harmed the performance of agricultural crops (AL-SUHAIBANI et al, 2021;KHAN et al, 2022;RAGONEZI et al, 2022;SOUZA et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Superabsorbent Polymers and Sanitary Sewage Change Water Availability During the Cowpea Emergence Phase

Araújo,

Assis,

Guimarães

et al. 2024

NAT

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Superabsorbent polymers (SAP) enhance water retention and facilitate seed emergence, though studies predominantly use high-quality water, neglecting SAP performance with alternative sources like sanitary sewage. Addressing the imperative to reduce fresh water demand, especially in water-scarce regions, SAP and sanitary sewage emerge as potential agricultural alternatives, partially fulfilling crop water and nutritional needs. This study assessed the impact of SAP and synthetic sanitary sewage (SSS) on substrate attributes and cowpea emergence in a randomized factorial design (8 x 2), incorporating varying SAP doses (0–0.14%) and hydration sources (SSS and distilled water). Cowpea was cultivated in polystyrene trays under controlled conditions. While SAP and SSS augmented water retention, total dissolved solids, pH, and electrical conductivity (ECse) also increased. Increased ECse negatively affected cowpea germination, emergence speed index (ESI), and time to 50% emergence. In conclusion, applying SAP near cowpea seeds impeded emergence, warranting the exploration of alternative strategies. Despite the rise in ECse, SSS demonstrated benefits for germination, establishing itself as a viable water source for cowpea emergence. This study underscores the necessity for further research into SAP applications and recognizes synthetic sanitary sewage as a promising, water-conserving source for sustainable cowpea growth. Keywords: available water; germination; hydrogel; sowing; wastewater. Polímeros superabsorventes e esgoto sanitário alteram a disponibilidade hídrica na fase de emergência do feijão-caupi RESUMO: Os polímeros superabsorventes (SAP) aumentam a retenção hídrica e emergência das sementes, embora estudos utilizem predominantemente água de boa qualidade, negligenciando o desempenho do SAP com fontes alternativas como o esgoto sanitário. Respondendo ao imperativo de reduzir o consumo de água doce, especialmente em regiões com escassez hídrica, SAP e esgoto sanitário surgem como potenciais alternativas agrícolas. Neste estudo avaliou-se SAP e esgoto sanitário sintético (SSS) nos atributos do substrato e na emergência do feijão-caupi em delineamento fatorial casualizado (8x2), incorporando diferentes doses de SAP (0–0,14%) e fontes hídricas (SSS e água destilada). Cultivou-se feijão-caupi em bandejas de poliestireno sob condições controladas. SAP e SSS aumentaram a retenção hídrica, total de sólidos dissolvidos, pH e condutividade elétrica (ECse). O aumento da ECse reduziu a germinação do feijão-caupi, velocidade de emergência e tempo para emergência de 50% das sementes. Conclui-se que o SAP aplicado próximo das sementes prejudica a emergência do feijão-caupi, justificando a exploração de estratégias alternativas. SSS demonstrou benefícios para a germinação, estabelecendo-se como fonte hídrica viável para emergência do feijão-caupi. Este estudo destaca a necessidade de maiores investigações sobre aplicações de SAP e reconhece SSS como fonte hídrica para o crescimento sustentável do feijão-caupi. Palavras-chave: água disponível; germinação; hidrogel; semeadura; águas residuárias.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Superabsorbent Polymers and Sanitary Sewage Change Water Availability During the Cowpea Emergence Phase

Araújo,

Assis,

Guimarães

et al. 2024

NAT

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Biodegradability of water treatment sludge influenced by sewage sludge, focusing its use in agriculture as soil conditioner

Franco

Leite

Yabuki

et al. 2021

Int. J. Environ. Sci. Technol.

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How agricultural practices affect the risk of human contamination by infectious pathogens: the need for a ‘One Health’ perspective

Ratnadass

Sarter

2023

CABI Reviews

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We conducted a comprehensive literature review with a global geographic scope, of interactions between agricultural crop production practices (excluding crop protection practices) and biological human health hazards. The majority of relevant references dealt with bacterial contaminations and infections, largely due to the important public health issue of antibiotic resistance. Indicator coliforms were particularly significant (only a minority mentioned harmful Escherichia coli strains), followed by species belonging to Salmonella , Campylobacter , Clostridia , Pseudomonas , and Listeria genera. Protozoan Cryptosporidium spp. and Giardia spp., and helminthic Ascaris spp. and Trichuris spp. dominated the references to parasites. Enteric viruses largely dominated the references to viruses (particularly noroviruses and rotaviruses). Very few references mentioned human fungal pathogens. Fresh vegetables were the most commonly mentioned crops, particularly leafy greens and those eaten raw, due to the use of wastewater for irrigation, and fertilization with livestock manure and human excreta/sewage sludge, potentially unsafe practices. While earlier literature reviews have shown that crop protection practices are central to the One Health concept, this review shows that other agricultural practices can also contribute to human and environmental health via different pathways, including better soil health, water quality, better food safety, and human nutrition. Our review underlines that besides tradeoffs, synergies should be sought, between, on the one hand, saving/preserving freshwater and organic waste recycling (affecting environmental health and some aspects of human health), and health hazards associated with the use of potentially contaminated waste on the other (affecting other aspects of human health), from both agroecological and One Health perspectives.

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Toxicity Study of the Sanitary Wastewater Treatment Plant Sludge Aiming Its Reuse in Agriculture

Cited by 3 publications

References 9 publications

Superabsorbent Polymers and Sanitary Sewage Change Water Availability During the Cowpea Emergence Phase

Superabsorbent Polymers and Sanitary Sewage Change Water Availability During the Cowpea Emergence Phase

Biodegradability of water treatment sludge influenced by sewage sludge, focusing its use in agriculture as soil conditioner

How agricultural practices affect the risk of human contamination by infectious pathogens: the need for a ‘One Health’ perspective

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