The present lab-scale research reveals the enrichment of anaerobic ammonium oxidation microorganism from methanogenic anaerobic granular sludge and the effect of inorganic carbon(sodium bicarbonate)on anaerobic ammoni...The present lab-scale research reveals the enrichment of anaerobic ammonium oxidation microorganism from methanogenic anaerobic granular sludge and the effect of inorganic carbon(sodium bicarbonate)on anaerobic ammonium oxidation.The enrichment of anammox bacteria was carried out in a 7.0-L sequencing batch reactor(SBR)and the effect of bicarbonate on anammox was conducted in a 3.0-L SBR.Research results,especially the biomass,showed first signs of anammox activity after 54 d cultivation with synthetic wast...展开更多
以城市污水处理厂污泥为原料,采用磷酸活化-微波热解法制备得到污泥活性炭,并将其用于吸附水溶液中的Cr(VI)。分别采用元素分析仪(Vario EL cube)、比表面积孔径分布测定仪(ASAP2020)、扫描电镜(SEM)和傅里叶红外光谱(FT-IR)等仪器对原...以城市污水处理厂污泥为原料,采用磷酸活化-微波热解法制备得到污泥活性炭,并将其用于吸附水溶液中的Cr(VI)。分别采用元素分析仪(Vario EL cube)、比表面积孔径分布测定仪(ASAP2020)、扫描电镜(SEM)和傅里叶红外光谱(FT-IR)等仪器对原污泥及污泥活性炭的表面组成和结构进行表征,探讨污泥活性炭的孔隙结构参数和表面化学性能。通过静态吸附实验,考察了溶液初始pH,接触时间,初始Cr(VI)浓度对污泥活性炭吸附Cr(VI)效果的影响,并探讨了污泥活性炭去除Cr(VI)的机理。实验结果表明,pH越低吸附效果越好,吸附平衡时间为100 h。不同温度下吸附过程均符合Langmuir等温吸附模型,30℃时最大吸附容量为27.55 mg/g;吸附动力学过程符合准二级速率方程(R2>0.99);污泥活性炭对Cr(VI)的去除是一个吸附-还原耦合的过程。展开更多
文摘The present lab-scale research reveals the enrichment of anaerobic ammonium oxidation microorganism from methanogenic anaerobic granular sludge and the effect of inorganic carbon(sodium bicarbonate)on anaerobic ammonium oxidation.The enrichment of anammox bacteria was carried out in a 7.0-L sequencing batch reactor(SBR)and the effect of bicarbonate on anammox was conducted in a 3.0-L SBR.Research results,especially the biomass,showed first signs of anammox activity after 54 d cultivation with synthetic wast...
文摘以城市污水处理厂污泥为原料,采用磷酸活化-微波热解法制备得到污泥活性炭,并将其用于吸附水溶液中的Cr(VI)。分别采用元素分析仪(Vario EL cube)、比表面积孔径分布测定仪(ASAP2020)、扫描电镜(SEM)和傅里叶红外光谱(FT-IR)等仪器对原污泥及污泥活性炭的表面组成和结构进行表征,探讨污泥活性炭的孔隙结构参数和表面化学性能。通过静态吸附实验,考察了溶液初始pH,接触时间,初始Cr(VI)浓度对污泥活性炭吸附Cr(VI)效果的影响,并探讨了污泥活性炭去除Cr(VI)的机理。实验结果表明,pH越低吸附效果越好,吸附平衡时间为100 h。不同温度下吸附过程均符合Langmuir等温吸附模型,30℃时最大吸附容量为27.55 mg/g;吸附动力学过程符合准二级速率方程(R2>0.99);污泥活性炭对Cr(VI)的去除是一个吸附-还原耦合的过程。
