TY - JOUR IS - 8 N2 - Tamarind seed kernel powder (TSKP) is a cheap starchy biodegradable material that has not been tested before for its flocculating properties. Sedimentation of clay slurry has been studied using this material. We have also done experiments with chemical grade starch and its blends with TSKP and compared their performance with that of potash alum for sedimentation of the clay slurry. The sedimentation phenomenon showed constant and falling rate zones. Sedimentation velocity, mass flux and concentration have been calculated at different time intervals for all the flocculants. Among the three types of natural flocculants, starch showed the highest rate constant in the constant rate zone and TSKP offers faster sedimentation in the falling rate zone. Thus TSKP, starch and their blends are potentially attractive environmentally benign flocculants. A qualitative explanation of the flocculating property of TSKP has been given. © 2007. ID - scholars471 KW - Computation theory; Concentration (process); Flocculation; Sedimentation KW - Clay slurry; Natural flocculants; Sedimentation rate; Tamarind seed kernel powder (TSKP); Water clarification KW - Water treatment KW - aluminum potassium sulfate; amylopectin; amylose; polymer; starch KW - Computation theory; Concentration (process); Flocculation; Sedimentation; Water treatment KW - biodegradation; clay; comparative study; evergreen tree; flocculation; polymer; sedimentation; seed; slurry KW - article; biodegradability; clay; controlled study; flocculation; nonhuman; priority journal; protein structure; sedimentation rate; seed kernel; tamarind KW - Alum Compounds; Aluminum Silicates; Biocompatible Materials; Carbohydrates; Indicators and Reagents; Kinetics; Materials Testing; Powders; Seeds; Tamarindus KW - Tamarindus indica Y1 - 2008/// A1 - Chakrabarti, S. A1 - Banerjee, S. A1 - Chaudhuri, B. A1 - Bhattacharjee, S. A1 - Dutta, B.K. JF - Bioresource Technology UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-38849185437&doi=10.1016%2fj.biortech.2007.06.049&partnerID=40&md5=1503b38f152c058fbf953aae282230be VL - 99 AV - none N1 - cited By 23 TI - Application of biodegradable natural polymers for flocculated sedimentation of clay slurry SP - 3313 SN - 09608524 EP - 3317 ER -