Laboratory tests were carried out on the effectiveness as natural coagulants of seeds from ten common Indian plants.
| Title | Relative evaluation of a few natural coagulants |
| Publication Type | Journal Article |
| Year of Publication | 1995 |
| Authors | Bhole, AG |
| Pagination | p. 284-290: 10 fig., 2 tab. |
| Date Published | 1995-01-01 |
| Keywords | alum, coagulant aids, coagulants/flocculants, india, laboratory testing, local materials, ph, turbidity removal |
| Abstract | Laboratory tests were carried out on the effectiveness as natural coagulants of seeds from ten common Indian plants. These were: soyabean, cowpea, kidney bean, rice, tamarind, maize, manila tamarind, horse gram, tinospora, and elephant apple (or wood apple). Turbidities of 25, 100, 200, 400, 800 and 1600 NTU were prepared out of bentonite clay. Maize was the most effective natural coagulant (68.6 per cent turbidity removal) while manila tamarind was the least effective (39.4 per cent). All were less effective when compared directly to alum. Used as a coagulant aid with alum, rice gave the best result (2.7 per cent improvement) and kidney bean the worst (1.7 per cent). The natural coagulants were effective in a pH range of 6.5-8.0 except for manila tamarind which was effective at pH 6.5. In all but one case (tinospora) the addition of the coagulant aid followed by alum gave the best results. |
| Notes | 10 ref. |
| Custom 1 | 253 |
