The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Natrayasamy Viswanathan - One of the best experts on this subject based on the ideXlab platform.
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identification of selective ion Exchange Resin for fluoride sorption
Journal of Colloid and Interface Science, 2007Co-Authors: Sankaran Meenakshi, Natrayasamy ViswanathanAbstract:The defluoridation capacity (DC) of a chelating Resin, namely Indion FR 10 (IND), and Ceralite IRA 400 (CER), an anion-Exchange Resin, were compared under various equilibrating conditions for the identification of selective sorbent. The results showed that chelating Resin is more selective than an anion-Exchange Resin for fluoride removal. The fluoride sorption was reasonably explained using Freundlich and Langmuir isotherms. The surface morphology of Resins before and after fluoride sorption was observed using scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) was used for the determination of functional groups responsible for fluoride sorption. Various thermodynamic parameters such as DeltaG0, DeltaH0, DeltaS0, and Ea have been calculated to understand the nature of sorption. The sorption kinetic mechanism was studied with reaction-based and diffusion-based models. The sorption process was found to be controlled by pseudo-second-order and particle diffusion models. The performance of the Resins studied has been tested with field samples collected from a fluoride-endemic area.
Sankaran Meenakshi - One of the best experts on this subject based on the ideXlab platform.
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identification of selective ion Exchange Resin for fluoride sorption
Journal of Colloid and Interface Science, 2007Co-Authors: Sankaran Meenakshi, Natrayasamy ViswanathanAbstract:The defluoridation capacity (DC) of a chelating Resin, namely Indion FR 10 (IND), and Ceralite IRA 400 (CER), an anion-Exchange Resin, were compared under various equilibrating conditions for the identification of selective sorbent. The results showed that chelating Resin is more selective than an anion-Exchange Resin for fluoride removal. The fluoride sorption was reasonably explained using Freundlich and Langmuir isotherms. The surface morphology of Resins before and after fluoride sorption was observed using scanning electron microscopy (SEM). Fourier transform infrared spectroscopy (FTIR) was used for the determination of functional groups responsible for fluoride sorption. Various thermodynamic parameters such as DeltaG0, DeltaH0, DeltaS0, and Ea have been calculated to understand the nature of sorption. The sorption kinetic mechanism was studied with reaction-based and diffusion-based models. The sorption process was found to be controlled by pseudo-second-order and particle diffusion models. The performance of the Resins studied has been tested with field samples collected from a fluoride-endemic area.
Sanjay M. Mahajani - One of the best experts on this subject based on the ideXlab platform.
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Hydration of dicyclopentadiene in the presence of cation Exchange Resin
Industrial & Engineering Chemistry Research, 2006Co-Authors: Sandip Talwalkar, Pramod Kumbhar, Sanjay M. MahajaniAbstract:In the present work the hydration of dicyclopentadiene (DCPD) has been studied in the presence of cation Exchange Resin catalyst. Ion Exchange Resin Amberlyst-15 was found to offer the best performance with more than 95% selectivity toward cydecanol and conversion as high as 15%. The literature suggests that the zeolites are more active than ion Exchange Resin catalysts for such reactions. However, this is one of those few liquid phase hydrations for which ion Exchange Resins offer much better performance in terms of both rate and selectivity toward alcohol. An important finding of our earlier study on this reaction is that the properties of the ion Exchange Resin catalyst are modified during the course of reaction, which helps in improving the reaction kinetics. In the present work, the kinetic studies have been discussed in detail and issues such as catalyst reusability and reasons for the rate enhancement have been addressed.
Jun Nan - One of the best experts on this subject based on the ideXlab platform.
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Enhancing volatile fatty acids production from waste activated sludge by a novel cation-Exchange Resin assistant strategy
Journal of Cleaner Production, 2021Co-Authors: Heliang Pang, Xinlei Pan, Yanshi Zheng, Zhongsen Yan, Jun NanAbstract:Abstract This study developed a novel strategy for enhancing volatile fatty acids production from waste activated sludge by cation-Exchange Resin assistant anaerobic fermentation. The process condition was optimized by response surface methodology. Considerable sludge disintegration degree (40.9%) and volatile fatty acids yield (4619.6 mg COD/L) were achievable at the proposed process conditions, i.e. cation-Exchange Resin dosage = 2.05 and 1.78 g/g SS, fermentation time = 4.97 and 6.46 d, and stirring strength = 246.9 and 261.2 rpm, respectively. Grey relational analysis revealed that cation-Exchange Resin dosage, fermentation time, and stirring strength presented similarly significant effects on sludge disintegration. The reusability tests showed that NaCl solution had the best effect on cation-Exchange Resin regeneration, and the performance of regenerated Resin was comparable with the original Resin on volatile fatty acids production. Compared with conventional pretreatment methods, the proposed cation-Exchange Resin assistant strategy revealed obvious advantages of saved pretreatment agents, easy operation, none chemical residual in sludge and small footprint. Total volatile fatty acids recovery can reach 1.46 × 108 tons chemical oxygen demand annually in terms of China’s context, which could offset one third of carbon gap in China’s wastewater treatment plants. The proposed cation-Exchange Resin assistant strategy indeed sheds lights on the direction for WAS treatment in a close alignment with process viability and engineering feasibility.
He Li-yuan - One of the best experts on this subject based on the ideXlab platform.
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Recent development in use of ion Exchange Resin in soil testing
Soil and Fertilizer Sciences in China, 2007Co-Authors: He Li-yuanAbstract:Recent research and progress of ion Exchange Resin in soil testing were summarized.It was introduced that a series of methods for the Resin pretreatment,using forms,essential manipulations and so on.Meanwhile,application prospect of ion Exchange Resin and some problems which exist in soil testing using ion Exchange Resin were put forward.
