1Department of Microbiology, PSG College of Arts and Science, Coimbatore-641 014, Tamil Nadu, India
Department of Microbiology, Nehru Arts and Science College, Coimbatore-641 105, Tamil Nadu, India
*Corresponding Author: Gayathri Unnikrishnan, Department of Microbiology, Nehru Arts and Science College, Coimbatore-641 105, Tamil Nadu, India. Email: gay3avittam2012@gmail.com
Online published on 16 September, 2022.
Pineapple peel wastes was seasonal which comprised of peels and rags. Their disposal posed a serious environmental pollution. Since pineapple peel was rich in cellulose, hemicellulose and other carbohydrates it was found to be a potential substrate for methane generation by anaerobic digestion.
Here pineapple peel and pulp wastes were collected. The hydraulic retention time of biogas (HRT) was monitored regularly for nine days and at three days intervals in gas collection bladders (Hans Seamless latex valve bladders). The slurry collected was periodically treated with phosphate solubilizers- Providencia rettgeri, a bacterial solubilizer and Meyerozyma gullerimondi, an yeast solubilizer. The biometric parameters of Ananas comosus was tested after slurry application. The germination per cent of Passiflora edulis were also calculated.
The best combination of biogas slurry with maximum manorial content for phosphate solubilizers were treatment with cow dung and fruit waste in the ratio 1:2 with high amount of magnesium: 0.0037%, followed by 0.075 N and 0.00054% P which was selected for biometric observations for plants. Pineapple waste were good source for making biogas and slurry obtained could be utilized as carriers for phosphate solubilising liquid fertilizers.
Biogas, Liquid fertilizer, Phosphate solubilizer, Pineapple waste
