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A study of external mass transfer effect on biodegradation of phenol using low‐density polyethylene immobilized Bacillus flexus GS1 IIT (BHU) in a packed bed bioreactor
Water and Environment Journal ( IF 1.7 ) Pub Date : 2020-07-06 , DOI: 10.1111/wej.12626 Ganesh Swain 1 , Ravi Kumar Sonwani 1 , Balendu Shekhar Giri 1 , Ram Sharan Singh 1 , Ravi Prakash Jaiswal 1 , Birendra Nath Rai 1
Water and Environment Journal ( IF 1.7 ) Pub Date : 2020-07-06 , DOI: 10.1111/wej.12626 Ganesh Swain 1 , Ravi Kumar Sonwani 1 , Balendu Shekhar Giri 1 , Ram Sharan Singh 1 , Ravi Prakash Jaiswal 1 , Birendra Nath Rai 1
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The impact of external mass transport on the biodegradation rate of phenol in a packed bed bioreactor (PBBR) was studied. A potential bacterial species, Bacillus flexus GS1 IIT (BHU), was isolated from the petroleum‐contaminated soil. Low‐density polyethylene (LDPE) immobilized with the B. flexus GS1 IIT (BHU) was used as packing material in the PBBR. The PBBR was operated by varying the inlet feed flow rate from 4 to 10 mL/min, and the corresponding degradation rate coefficients were found to be in the range of 0.119–0.157 L/g h. In addition, the highest removal rate of phenol was obtained to be 1.305 mg/g h at an inlet feed rate of 10 mL/min. The external mass transfer was studied using the model 
. A new empirical correlation 
for the biodegradation of phenol in the PBBR was developed after the evaluation at various values of K and n.
中文翻译：
低密度聚乙烯固定化弯曲芽孢杆菌GS1 IIT（BHU）在填充床生物反应器中对外传质对苯酚生物降解作用的研究
研究了外部传质对填充床生物反应器（PBBR）中苯酚生物降解率的影响。从石油污染的土壤中分离出了潜在的细菌种，弯曲芽孢杆菌GS1 IIT（BHU）。固定有弯曲双歧杆菌GS1 IIT（BHU）的低密度聚乙烯（LDPE）被用作PBBR中的包装材料。通过将入口进料流速从4 mL / min更改为PBBR，可以运行PBBR，相应的降解速率系数在0.119-0.157 L / g h的范围内。此外，在进料速度为10 mL / min时，苯酚的最高去除速率为1.305 mg / gh。使用该模型研究了外部传质。新的经验相关在K和n的不同值下进行评估后，建立了PBBR中苯酚生物降解的苯酚。
更新日期：2020-07-06
. A new empirical correlation for the biodegradation of phenol in the PBBR was developed after the evaluation at various values of K and n.
中文翻译：
低密度聚乙烯固定化弯曲芽孢杆菌GS1 IIT（BHU）在填充床生物反应器中对外传质对苯酚生物降解作用的研究
研究了外部传质对填充床生物反应器（PBBR）中苯酚生物降解率的影响。从石油污染的土壤中分离出了潜在的细菌种，弯曲芽孢杆菌GS1 IIT（BHU）。固定有弯曲双歧杆菌GS1 IIT（BHU）的低密度聚乙烯（LDPE）被用作PBBR中的包装材料。通过将入口进料流速从4 mL / min更改为PBBR，可以运行PBBR，相应的降解速率系数在0.119-0.157 L / g h的范围内。此外，在进料速度为10 mL / min时，苯酚的最高去除速率为1.305 mg / gh。使用该模型研究了外部传质
。新的经验相关在K和n的不同值下进行评估后，建立了PBBR中苯酚生物降解的苯酚。
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