Publications by authors named "Changqi Yu"
Simulated landfill bioreactors were established and operated for 635 days to investigate the dynamic release of seven siloxanes in landfill biogas (denoted by octamethyltrisiloxane (L3), decamethyltetrasiloxane (L4), dodecamethylpentasiloxane (L5), hexamethylcyclotrisiloxane (D3), octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) and dodecamethylcyclohexasiloxane (D6)). In total, 259.45, 252.
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- - The study examines the harmful effects of co-disposing industrial waste with municipal solid waste (MSW) at open dumping sites, highlighting the potential for increased groundwater pollution, particularly from industries such as rubber and leather production.
- - Groundwater samples collected from five dumping sites revealed severe contamination, with the co-disposal sites showing significantly more pollutants than those with only MSW, particularly biological and chemical contaminants like total coliforms and heavy metals.
- - Key findings included the identification of pollutants such as PAHs and high levels of di(2-ethylhexyl)phthalate, raising concerns about groundwater quality, especially at the downstream areas of these dumping sites where concentrations of harmful pollutants were notably high.
The effects of magnetite on anammox performance: Phenomena to mechanisms.
Bioresour Technol
October 2021
Article Synopsis
- Low temperatures hinder the anammox reaction, but adding the right form of iron (Fe) can boost its effectiveness.
- Batch experiments tested different sizes of magnetite (100 μm, 20 μm, and 200 nm) on anammox processes at 10-25 °C.
- Results showed that nano-scale magnetite significantly enhanced nitrogen elimination, achieving the highest specific anammox activity (18.0 mgTN/(gVSS·h)) compared to larger sizes.
- X-ray analyses revealed that nano-magnetite better adhered to granule surfaces, potentially speeding up the release of beneficial iron for improved anammox performance.