Abstract：
The current study evaluated the effectiveness of Tamarindus indica L. seed polysaccharides in removing fluoride from potable water collected from Sivakasi,Viruthunagar district, Tamil Nadu, India. The physiochemical properties of the water samples were examined, and each parameter was compared to the standard prescribed by Bureau of Indian standards. Most of the parameters were within the permissible limit except for fluoride levels in the Sivakasi water sample. Polysaccharides were isolated from Tamarindus indica L. seeds and the fluoride removal efficacy of the polysaccharides was evaluated. The optimum treatment dosage of the isolated seed polysaccharides was determined using aqueous fluoride solutions of various ppm concentrations (1, 2, 3, 4, and 5 ppm). Tamarindus polysaccharides were added to the aqueous solutions in varying doses (0.02, 0.04, 0.06, 0.08, 1.0, and 1.2 g), and 0.04 g was observed to be the most effective at removing fluoride (by 60%). It was selected as the optimum dose for treating the fluoride-contaminated water sample. Following the treatment, fluoride concentration in the water sample dropped from 1.8 mg/L to 0.91 mg/L, falling below the BIS standard limit. The findings from the study demonstrated the use of T. indica L. seed polysaccharides as an effective natural coagulant for removing fluoride from potable water. GC-MS and FTIR analysis of the isolated polysaccharide samples were performed. The FTIR results revealed the functional groups that might attribute to the fluoride removal activity of the isolated polysaccharides. The observations from the study suggested that Tamarindus polysaccharides might be used as an alternative to chemical agent used for fluoride removal in order to preserve the environment and human welfare.
摘要：
当前的研究评估了TamarindusindicaL.种子多糖在从Sivakasi收集的饮用水中去除氟化物的有效性，Viruthunagar区,泰米尔纳德邦,印度。检查了水样的理化性质，并将每个参数与印度标准局规定的标准进行比较。除Sivakasi水样品中的氟化物含量外，大多数参数都在允许的范围内。实施例2从罗马因种子中分离多糖,并评价多糖的除氟功效。使用各种ppm浓度（1、2、3、4和5ppm）的氟化物水溶液确定分离的种子多糖的最佳处理剂量。以不同的剂量(0.02、0.04、0.06、0.08、1.0和1.2g)向水溶液中加入罗马因多糖。并且观察到0.04g在去除氟化物方面是最有效的(60%)。选择其作为处理氟化物污染水样的最佳剂量。治疗后,水样品中的氟化物浓度从1.8mg/L降至0.91mg/L，低于BIS标准限值。该研究的结果表明，使用T.indicaL.种子多糖作为有效的天然凝结剂从饮用水中去除氟化物。对分离的多糖样品进行GC-MS和FTIR分析。FTIR结果揭示了可能归因于分离的多糖的除氟活性的官能团。该研究的观察结果表明，塔玛星多糖可能被用作用于去除氟化物的化学试剂的替代品，以保护环境和人类福祉。
