Removal of caffeine from industrial wastewater using Trichosporon asahii

被引：0
|
作者：
Lakshmi, V. [1 ]
Das, Nilanjana [1 ]
机构：
[1] VIT Univ, Sch Bio Sci & Technol, Environm Biotechnol Div, Vellore 632014, Tamil Nadu, India
来源：
JOURNAL OF ENVIRONMENTAL BIOLOGY | 2013年 / 34卷 / 04期
关键词：
Biofilm; Caffeine removal; Trichosporon asahii; Immobilization; Entrapment; BIOFILM FORMATION; CELLS; BIODEGRADATION; DEGRADATION; EXTRACTION; PH;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Caffeine (1,3,7-trimethylxanthine), a natural alkaloid present mainly in tea and coffee products has been suggested as an environmental pollutant. Decaffeination is an important process for the removal of caffeine from coffee industrial wastes. In the present study, caffeine removal (through degradation) by yeast isolate, Trichosporon asahii immobilized on various conventional matrices (sodium alginate, carboxymethyl cellulose, chitosan, agar and agarose) was investigated using the method of entrapment. The biofilm forming ability of T. asahii was monitored by atomic force microscopy and scanning electron microscopy. Exopolysaccharide produced by T asahii biofilm was characterized by FT-IR spectroscopy and HPLC analysis. Caffeine removal from coffee processing industrial effluent was found to be 75 and 80 % by alginate immobilized yeast and yeast biofilm formed on gravels over a period of 48 hr in batch mode. Effectiveness of the process was also tested involving the continuous - flow column studies.
引用
收藏
页码：701 / 708
页数：8
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