Biodegradation and kinetic analysis of phenol using low-density polyethylene immobilized Bacillus flexus GS1 IIT (BHU) in a packed bed bioreactor

被引：0

作者：

Swain, Ganesh ^{[1
]}

Sonwani, R. K. ^{[1
]}

Nagar, Pankaj ^{[1
]}

Giri, B. S. ^{[1
]}

Jaiswal, R. P. ^{[1
]}

Singh, R. S. ^{[1
]}

Rai, B. N. ^{[1
]}

机构：

[1] Indian Inst Technol BHU, Dept Chem Engn & Technol, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF THE INDIAN CHEMICAL SOCIETY | 2020年 / 97卷 / 03期

关键词：

PBBR; phenol; kinetic variables; Bacillus flexus; COD removal; CEREUS; BATCH;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Phenol is considered as a precarious pollutant due to its carcinogenic, mutagenic nature even at low concentration. The present study emphasizes the degradation kinetics and behavior of a packed bed bioreactor (PBBR) for biodegradation of phenol using bacterial strain Bacillus flexus GS1 IIT (BHU). Low density polyethylene (LDPE) was used as packing material in a laboratory scale PBBR. Process variables such as pH, temperature were optimized and found to be 7.0 and 30 degrees C, respectively. Phenol biodegradation efficiency in PBBR was analyzed at optimum condition by varying substrate concentration between 25-700 mg/L. At optimum conditions, the maximum removal of phenol was observed to be 99.45% at 300 mg/L of initial phenol concentration. The kinetic constants were calculated from Monod and Andrew-Haldane model and found to be mu(max): 0.215 h(-1); K-s: 80 mg/L and mu(max): 0.27 h(-1); K-s: 66 mg/L; Ki: 300 mg/L, respectively.

引用

页码：332 / 338

页数：7