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首页> 外文会议>International Conference on "Multidimensional Role of Basic Science in Advanced Technology" >Optimization Study of Defluoridation from Water Using Seashell Powder
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Optimization Study of Defluoridation from Water Using Seashell Powder

机译：贝壳粉偏氟化焊剂的优化研究

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摘要

World wide it has been observed that higher fluoride concentration in water can lead endemic diseases. In many parts of rural area, the ground water is the main source of drinking water. In the present study main objective of is to check feasibility of removal of fluoride from groundwater by solid waste adsorbents Seashell powder (SSP). The raw material were collected and physicochemical characterization of the adsorbent has been done by using standard methods e.g. sieving, proximate analysis, pHpzc, SEM, XRD. Different dose of adsorbent were used ranging from 0.5 to 5.5 gm/L of fluoride aqueous solution. Equilibrium sorption studies were conducted at room temperature (i.e 30°C) with varying fluoride concentrations (2 to 16 mg/L). Sorption experiments were also carried out at various pH (2- 14) to understand the effect of pH on removal was studied for 15- 1440 minute. The temperature range for the study was taken from 293K to 313K. All the batch study was performed at the orbital shaking incubator. The optimum dose & equilibrium time was found 4mg/L & 480 min respectively. Various kinetic models and equilibrium study is done have been study for the present work to investigate the adsorption process of fluoride onto SSP. The value of thermodynamic parameter ?H indicated an exothermic adsorption process and the negative value of ?G show the feasibility and spontaneity of material-anion interaction.
机译：世界宽的是，已经观察到水中氟化物浓度较高可以引领流动性疾病。在农村地区的许多地方，地面水是饮用水的主要来源。在本研究中，主要目的是通过固体废物吸附剂贝壳粉（SSP）检查从地下水中除去氟化物的可行性。收集原料，并通过使用标准方法进行吸附剂的物理化学表征。筛分，近分析，PHPZC，SEM，XRD。使用不同剂量的吸附剂从0.5-5.5GM / L的氟化物水溶液中使用。平衡吸附研究在室温（即30℃）下，具有不同的氟化物浓度（2至16mg / L）。在各种pH（2-14）中也进行吸附实验以了解pH对去除的影响15-1440分钟。该研究的温度范围从293K〜313K中取出。所有批次研究都在轨道摇动培养箱进行。最佳剂量和平衡时间分别为4mg / L＆480分钟。完成了各种动力学模型和均衡研究，已经研究了本作研究氟化物的吸附过程在SSP上。热力学参数的值表示放热吸附过程，αg的负值表明了材料 - 阴离子相互作用的可行性和自发性。

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