环保科技
環保科技
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ENVIRONMENTAL PROTECTION AND TECHNOLOGY
2015年
4期
29-34
,共6页
生物阴极微生物燃料电池%脱氮除碳%产电性能%盐度%动力学
生物陰極微生物燃料電池%脫氮除碳%產電性能%鹽度%動力學
생물음겁미생물연료전지%탈담제탄%산전성능%염도%동역학
biocathode microbial fuel cell%carbon and nitrogen removal%electricity generation%salinity%kinetics
在不同盐度影响下，研究了生物阴极微生物燃料电池（ BCMFC ）的脱氮除碳及产电性能，分析了COD和NH4+-N的降解动力学以及硝化反硝化酶的活性。结果表明：盐度为10%海水比例的BCMFC性能最佳，TN去除率为86.99%，COD去除率为99%，最大输出功率为2520 mW/m3，内阻为151Ω；当盐度达到50%海水比例时，污染物去除率下降，输出功率减少至175 mW/m3，内阻增大了约9倍。10%海水比例时的COD降解和NH4+-N的去除动力学级数均为一级，且对应的反应速率常数最大，分别是盐度为70%海水比例的2.4倍和5倍；当盐度达到50%海水比例时，硝化反硝化酶的活性受到明显抑制。
在不同鹽度影響下，研究瞭生物陰極微生物燃料電池（ BCMFC ）的脫氮除碳及產電性能，分析瞭COD和NH4+-N的降解動力學以及硝化反硝化酶的活性。結果錶明：鹽度為10%海水比例的BCMFC性能最佳，TN去除率為86.99%，COD去除率為99%，最大輸齣功率為2520 mW/m3，內阻為151Ω；噹鹽度達到50%海水比例時，汙染物去除率下降，輸齣功率減少至175 mW/m3，內阻增大瞭約9倍。10%海水比例時的COD降解和NH4+-N的去除動力學級數均為一級，且對應的反應速率常數最大，分彆是鹽度為70%海水比例的2.4倍和5倍；噹鹽度達到50%海水比例時，硝化反硝化酶的活性受到明顯抑製。
재불동염도영향하，연구료생물음겁미생물연료전지（ BCMFC ）적탈담제탄급산전성능，분석료COD화NH4+-N적강해동역학이급초화반초화매적활성。결과표명：염도위10%해수비례적BCMFC성능최가，TN거제솔위86.99%，COD거제솔위99%，최대수출공솔위2520 mW/m3，내조위151Ω；당염도체도50%해수비례시，오염물거제솔하강，수출공솔감소지175 mW/m3，내조증대료약9배。10%해수비례시적COD강해화NH4+-N적거제동역학급수균위일급，차대응적반응속솔상수최대，분별시염도위70%해수비례적2.4배화5배；당염도체도50%해수비례시，초화반초화매적활성수도명현억제。
Under the influence of salinity,the carbon degradation,nitrogen removal and electricity generation were investigated in the biocathode microbial fuel cell( BCMFC ). And COD( chemical oxygen demand)degradation kinetics,NH4+ -N( ammonia)degradation kinetics and activities of nitrifying denitrifying enzyme were analyzed. The results showed the performance of BCMFC was op-timized at the 10% seawater proportion. TN( total nitrogen)and COD removal efficiency were 86. 99% and 99%,respectively. The maximum power density was 2 520 mW/m3 and the resistance was 151 Ω. When the seawater proportion reached 50%,the contaminant removal efficiency de-clined,the maximum power density decreased to 175 mW/m3 and the resistance increased by 9 times approximately. The degradation process of COD and NH4+ -N conformed to first-order reaction at 10% seawater proportion. The corresponding reaction rate constants were the maximum which were 2. 4 times and 5 times that of BCMFC at 70% seawater proportion. The activities of nitrifying denitri-fying enzyme were inhibited obviously when the salinity reached 50% seawater proportion.
