title: The effect of carbon sources on nitrogen removal performance in bioelectrochemical systems.
abstract: In order to ascertain the effects of different carbon sources (methanol, glucose, starch and NaHCO(3)) on denitrification in BESs, the experiment was conducted in a constant current, 3.5 of chemical oxygen demand to nitrate ratio in a greenhouse. Among the four carbon sources investigated in BESs, NaHCO(3) showed the highest nitrite accumulation and the ratio of soluble microbial products to soluble chemical oxygen demand (SMP/SCOD) with a value of 3.68 ± 0.68 mg/L and 94%, respectively. And the addition of organic substrates could reduce SMP production and enhance the denitrification process. In the constant voltage experiment, it was observed that the organics could be used by microbes to generate electrons at the anode. And a maximal current value of 11.0 mA in the BESs fed with starch indicated that the complex carbon source was easier to be used by microorganisms to generate electricity than the simple carbon source.
authors.affiliation: College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
authors.forename: Huajun
authors.initials: H
authors.lastname: Feng
authors.forename: Baocheng
authors.initials: B
authors.lastname: Huang
authors.forename: Yuqin
authors.initials: Y
authors.lastname: Zou
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.forename: Meizhen
authors.initials: M
authors.lastname: Wang
authors.forename: Ju
authors.initials: J
authors.lastname: Yin
authors.forename: Yanqing
authors.initials: Y
authors.lastname: Cong
authors.forename: Dongsheng
authors.initials: D
authors.lastname: Shen
mesh_terms: D001420:Bacteria, Aerobic / Q000502:physiology*; D001673:Biodegradation, Environmental; D001674:Bioelectric Energy Sources / Q000382:microbiology*; D002244:Carbon / Q000737:chemistry / Q000378:metabolism*; D004563:Electrochemistry / Q000295:instrumentation; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009566:Nitrates / Q000302:isolation & purification / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000295:instrumentation*
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical; D002244:Carbon