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Rice straw was applied often as a carbon source to improve nitrogen removal; however, few studies have considered the effect of rice straw on nitrous oxide (NO) emission during nitrogen removal in constructed wetlands (CWs). We constructed eighteen combined systems, consisting of rice straw ponds and surface flow CWs to investigate the effect of rice straw application on NO emission in three strengths of swine wastewater treatments. The results showed rice straw (RS) treatment increased 131.5% of NO emission factor from low strength CWs, but decreased 37.2-43.7% of NO emission factors for medium and high strengths compared with no rice straw (NRS) treatment. The RS application led to an average 10.7% increase in the potential denitrification rate, and simultaneously enhanced gene abundances of the total bacteria (16S rRNA), ammonia-oxidising archaea, ammonia-oxidising bacteria, nitrate reductase, and NO reductase (nosZ) for all strengths CWs. The multiple regression model revealed NO emissions were strongly related to water temperature, nitrate, chemical oxygen demand, and denitrification genes. The proportion of nosZ gene abundance in 16S rRNA was higher in RS (0.7-1.3%) than NRS (0.4-0.9%) for medium and high strengths, while an opposite trend was observed for low strength. The discrepancy was responsible for increasing or decreasing NO emission by RS application among different strengths. These findings indicated the effectiveness of RS application to control NO emissions from the surface flow CWs was related to the pollution level of wastewater.
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Greenhouse gas and ammonia emissions during composting with different biochar types and particle sizes were investigated. Compared with powder-biochar, granular-biochar improved pore connectivity and ...
Due to the large area of Cd-contaminated paddy soils worldwide, low-cost measures to reduce the accumulation of Cd in rice plant are necessary. A field experiment was therefore conducted to investigat...
Rice is a staple food for nearly half of the world's population, but rice paddies constitute a major source of anthropogenic CH emissions. Root exudates from growing rice plants are an important subst...
An efficient analytical method was developed and validated using a modified QuEChERS method and LC-MS/MS for the detection and quantification of neonicotinoid insecticide residues in rice whole grain ...
Agricultural residues have high potential for biogas production, complex lignocellulosic structure is however the main hindrance in their bioconversion. This research focuses on combined effect of alk...
The primary objective of this study is to compare iron absorption of high surface area ferric phosphate with that of ferrous sulfate and bulk ferric phosphate in a rice-based meal in non-p...
The purpose is to assess feasibility of rice bran consumption in weaning children and collect pilot data on gut microbiome and metabolome modulation with rice bran intake for diarrheal pre...
The purpose of this research was to investigate 5 different formulations of whole grain barley and refined white rice against a control of white bread on post-prandial glycemic response, a...
Glycemic carbohydrates are associated with metabolic disturbances, such as type II diabetes, due to rapid digestion of starch into glucose. The specific properties of starch within these f...
This investigation protocol uses an isotope reference method to evaluate bioavailability of ß-C in rice and its bioconversion to vitamin A. A well-nourished population will be fed hydrop...
The anamorphic form of the fungus MAGNAPORTHE GRISEA and the most important pathogen of rice worldwide. It causes rice blast which prevents maturation of the rice grains.
OIL extracted from the hard outer brown layer of rice bran after the husk has been removed.
The application of repeated, brief periods of vascular occlusion at the onset of REPERFUSION to reduce REPERFUSION INJURY that follows a prolonged ischemic event. The techniques are similar to ISCHEMIC PRECONDITIONING but the time of application is after the ischemic event instead of before.
Self-generated faint acoustic signals from the inner ear (COCHLEA) without external stimulation. These faint signals can be recorded in the EAR CANAL and are indications of active OUTER AUDITORY HAIR CELLS. Spontaneous otoacoustic emissions are found in all classes of land vertebrates.
A genus of DNA plant viruses in the family CAULIMOVIRIDAE. The sole species, Rice tungro bacilliform virus, shows 25% identity with BADNAVIRUS. It is transmitted by leafhoppers with the assistance of RICE TUNGRO SPHERICAL VIRUS.
Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...