Biogas production from various plant wastes [water hyacinth; Marila grass; Casuarina junghuhniana Miq; paragrass mixed with pig manure]
1984
Phet Katanyukun | Saithip Pathomrat
To study the production of biogas using various kinds of plants, as well as the study of nutrient content from their slurry, the experiment was arranged in a completely randomized design with 4 treatments and replicated 4 times. The plants were water hyacinth, marila grass, Casuarina junghuhniana Miq, and paragrass. Pig manure was mixed to these plants at ratio 5:1 by weight. Casuarina junghuhniana yielded the highest amount of biogas and lasted longer than the others. The determination of the nutrients in every slurry was made, showing that marila grass gave 3.16% nitrogen which was greater than the others. Water hyacinth yielded the highest amount of phosphorus, 6,97 percent whereas Casuarina junghuhniana gave the highest percentage of potassium, 1.94% but gave the lowest percentage of nitrogen and phosphorus
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