An eastern Iowa mobile home park has failed for more than a year to ensure its drinking water is safe, and state regulators recently ordered it to provide bottled water
According to a review in Respiratory Medicine, dietary supplementation with nitrate-rich beetroot juice could be used to support lung health and function in patients with Chronic Obstructive Pulmonary Disease (COPD).
According to a review in Respiratory Medicine, dietary supplementation with nitrate-rich beetroot juice could be used to support lung health and function in patients with Chronic Obstructive Pulmonary Disease (COPD).
Nitrate has been used for nearly 80 years as a chemical to control problematic gases in the sewer system. However, few studies have explored simultaneous control in biofilm and sediment using different strategies. Here, we introduced a nitrate dosing method involving an initial high shock followed by low level dosing, tested at two distinct frequencies in a lab-scale sewer reactor <110 days. Long-term investigation revealed that the more frequent 20 min interval dosing slightly surpassed the 1 h interval method when applying the same hourly dose of 30 mg N>/L (sulfide control: 98.3 ± 1.7 % vs 97.9 ± 1.5 %; methane control: 89.8 ± 4.5 % vs 83.4 ± 6.7 %). 16 s rRNA gene amplicon sequencing revealed biofilm detachment and sediment stratification, which can be attributed to the differing effects of nitrate dosing on biofilm and sedimentary microbial interactions. Dominant bacteria such as Thauera and Thiobacillus performed autotrophic denitrification and nitrate-reducing sulfide-
Some Costa Rican water sources have increased nitrate concentrations. Click to read more. Water contamination has been reported in some Costa Rican water sources.