Engineering a lignocellulosic biosorbent – Coir pith for removal of cesium from aqueous solutions: Equilibrium and kinetic studies

Removal of Radioactive Cesium (134Cs plus 137Cs) from Low-Level Contaminated Water by Charcoal and Broiler Litter Biochar

“…The K d value of BLB for low-level radioactive cesium at 23℃ was lower than that of zeolite (2 _ 5 L/g at 25℃) (Borai et al, 2009) and higher than that of nickel hexacyanoferrate incorporated into walnut shell (0.066 L/g at 27℃) and coir pith (0.17 L/g at 25℃) (Parab andSudersanan, 2010, Ding et al, 2013). The modified coir pith biosorbent showed higher K d values of 7.57 and 22.6 at 35℃…”

“…and 45℃, respectively (Parab and Sudersanan, 2010). We did not perform experiments at 35℃ or higher temperatures because the polluted area around Fukushima Prefecture is not a tropical area such as India, where the coir pith biosorbent was examined.…”

“…Biochars are known to have the ability to adsorb organic and inorganic compounds, including heavy metals, and have been used for remediation of polluted soil (Beesley et al, 2011;Dias et al, 2007;Uchimiya et al, 2012). Adsorption of cesium by agricultural residues (coir pith and walnut shell), which were modified by incorporating nickel hexaxyanoferrate, was reported recently (Parab and Sudersanan, 2010;Ding et al, 2013), but to the best of our knowledge, cesium adsorption by biochar made of broiler litter has not been examined.…”

Comparison of Absorbents and Drugs for Internal Decorporation of Radiocesium: Advances of Polyvinyl Alcohol Hydrogel Microsphere Preparations Containing Magnetite and Prussian Blue

“…After binding with the carrier to prevent dissolution of the constituent in the GI tract, 24) these ferrocyanides were examined for decorporation of radiocesium in livestocks in the 1970s. 25,26) Currently, ferrocyanide is applied for the removal of radiocesium from animals 27) or the environment 28,29) by binding with insoluble carriers. Unfortunately, the recent trends of emphasizing the adverse effects 30,31) or allergenic effects 32) of the transition metals have hampered their medical application.…”

Hypothesising that salts of iodine, strontium and caesium reverse ageing induced by nuclear radiation

“…Strontium-90 (half life of 30 years) is another radioactive element that can be found in certain radiotherapies used to treat bone cancers. It has also been observed to have similar properties to that of calcium in bones (Parab and Sudersanan, 2010). Although exposure to these radioactive species can be detrimental to one's health, small doses of these elements can be used prophylactically to reduce the uptake and retention in one's body as well as excrete larger amounts of these radioactive species out of the body (Radiochemistry Society, 2003).…”