We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Co-composting of sewage sludge as an effective technology for the production of substrates with reduced content of pharmaceutical residues
AI summary Read the abstract
Researchers found that co-composting sewage sludge with other materials effectively reduced pharmaceutical residues and made the resulting product safer for agricultural use. While primarily about drug contamination, this is relevant to microplastics because sewage sludge is a major source of microplastics that enter farmland when used as fertilizer. Understanding how composting changes pollutant levels in sludge could help develop treatment methods that reduce both pharmaceutical and microplastic contamination in agricultural soil.
Sewage sludge is a valuable source of elements such as phosphorus and nitrogen. At the same time, heavy metals, emerging organic compounds, micropollutants (pharmaceuticals, pesticides, PCPs, microplastics), or some potentially dangerous bacteria can be present. In this study, the sewage sludge was aerobically treated by composting with other materials (co-composted), and the resulting substrate was tested for suitability of its use in agriculture. Closer attention was focused on the pharmaceuticals (non-steroidal antiphlogistics, sartanes, antiepileptics, caffeine, and nicotine metabolites) content and ecotoxicity of the resulting substrates in the individual phases of sludge co-composting. It has been verified that during co-composting there is a potential for reduction of the content of pharmaceutical in the substrates up to 90 %. The course of the temperature in the thermophilic phase is decisive. Growth and ecotoxicity experiments demonstrated that with a suitable co-composting procedure, the resulting stabilized matter is suitable as a substrate for use in plant production, and the risk of using sewage sludge on agricultural land is substantially reduced.
More Papers Like This
Degradation mechanism of microplastics and potential risks during sewage sludge co-composting: A comprehensive review
AI summary Read the abstract
This review examines how aerobic composting of sewage sludge can break down microplastics, but also identifies risks in the process. While composting shows promise as a green method for degrading microplastics, it can also release plastic additives and change the types of microplastics present. The study highlights that compost made from sewage sludge may inadvertently spread microplastics and their associated chemicals into agricultural soil.
Source, occurrence, migration and potential environmental risk of microplastics in sewage sludge and during sludge amendment to soil
AI summary Read the abstract
This review examines microplastics in sewage sludge and the risks of applying sludge as agricultural fertilizer, finding that sludge acts as both a sink for sewage microplastics and a source when spread on fields. Co-accumulated heavy metals, antibiotics, and antibiotic resistance genes on microplastics further complicate the environmental risks of sludge amendment to soils.
Assessing emerging and priority micropollutants in sewage sludge: environmental insights and analytical approaches
AI summary Read the abstract
Researchers reviewed the presence of emerging pollutants, including microplastics, pharmaceuticals, and industrial chemicals, in sewage sludge that is commonly applied to agricultural land. They found that current analytical methods are improving but still face challenges in detecting these contaminants at low concentrations in complex sludge samples. The study highlights the environmental risks of spreading pollutant-laden sludge on farmland and calls for better monitoring standards.
Microplastic contamination in sewage sludge: Abundance, characteristics, and impacts on the environment and human health
AI summary Read the abstract
This review focuses on microplastics found in sewage sludge, which is often spread on agricultural land as fertilizer. The practice introduces microplastics directly into farm soil, where they can be taken up by crops or leach into groundwater. This creates a pathway for microplastics to reach human food and drinking water, raising concerns about the safety of using sewage sludge in agriculture.
Extent and effects of microplastic pollution in soil with focus on recycling of sewage sludge and composted household waste and experiences from the long-term field experiment CRUCIAL
AI summary Read the abstract
Researchers reviewed microplastic contamination in agricultural soils amended with sewage sludge and compost, finding that current microplastic levels in farm fields remain below those shown to harm soil organisms in lab studies, though they caution that more long-term research is needed to confirm safety.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.