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Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles

Frontiers of Environmental Science & Engineering 2020年第1期14卷 175-184页

作者： Kanha Gupta nitin khandelwal Gopala Krishna Darbha Department of Chemical Sciences USER KolkataMohanpurWest BengalPincode 741246India Environmental Nanoscience Laboratory Department of Earth SciencesUSER KolkataMohanpurWest BengalPincode 741246India Center for Climate&Environmental Studies USER KolkataMohanpurWest BengalPincode 741246India

Increasing applications of metal oxide nanoparticles and their release in the natural environment is a serious concern due to their toxic ***,it is essential to have eco-friendly solutions for the remediation of toxic metal oxides in an aqueous *** the present study,eco-friendly Iron Oxide Nanoparticles(IONPs)are synthesized using solvothermal technique and successfully characterized using scanning and transmission electron microscopy(SEM and TEM respectively)and powder X-Ray diffraction(PXRD).These IONPs were further utilized for the remediation of toxic metal oxide nanoparticle,i.e.,*** experiments were also performed in complex aqueous solutions and real water samples to check its applicability in the natural *** study was performed to show *** show that these 200 nm-sized spherical IONPs,as revealed by SEM and TEM analysis,were magnetite(Fe3O4)and contained short-range crystallinity as confirmed from XRD *** experiments show that the composite follows the pseudosecond-order kinetic *** k>0.99 for Langmuir sorption isotherm suggests chemisorption as probable removal mechanism with monolayer sorption of Ce02 NPs on *** than 80%recovery of adsorbed Ce02 NPs through ultrasonication and magnetic separation of reaction precipitate confirms reusability of *** removal%of Ce02 in various synthetic and real water samples was>90%signifying that IONPs are candidate adsorbent for the removal and recovery of toxic metal oxide nanoparticles from contaminated environmental water samples.

关键词： Adsorption toxic metal oxide remediation eco-friendly IONP Iron oxide CeO2 removal

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Expert opinion on the preoperative medical optimization of adults with diabetes undergoing metabolic surgery

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World Journal of Diabetes 2021年第10期12卷 1587-1621页

作者： Saptarshi Bhattacharya Sanjay Kalra nitin Kapoor Rajiv Singla Deep Dutta Sameer Aggarwal Deepak khandelwal Vineet Surana Atul Dhingra Viny Kantroo Sachin Chittawar Nilakshi Deka Vivek Bindal Puja Dutta Endocrinology Max Superspeciality HospitalNew Delhi 110092India Endocrinology Bharti HospitalKarnal 132001HaryanaIndia Endocrinology Christian Medical CollegeVellore 632004Tamil NaduIndia Endocrinology Kalpavriksh Super Speciality CenterNew Delhi 110075India Endocrinology CEDAR Superspecialty ClinicNew Delhi 110075India Endocrinology Apex Plus Superspeciality HospitalRohtak 124001HaryanaIndia Endocrinology Maharaja Agrasen HospitalNew Delhi 110026India Endocrinology Manipal HospitalsNew Delhi 110075India Endocrinology Gangaram Bansal Super Speciality HospitalSri Ganganagar 335001RajasthanIndia Respiratory Medicine&Critical Care Indraprastha Apollo HospitalsSarita ViharNew Delhi 110076India Endocrinology Gandhi Medical CollegeBhopal 462001Madhya PardeshIndia Endocrinology Apollo HospitalsGuwahati 781005AssamIndia Minimal Access Metabolic and Bariatric surgeryMax Superspeciality HospitalPatparganjNew Delhi 110092India Nutrition Max Superspeciality HospitalPatparganjNew Delhi 110092India

Diabetes mellitus(DM)and obesity are interrelated in a complex manner,and their coexistence predisposes patients to a plethora of medical *** surgery has evolved as a promising therapeutic option for both *** is recommended that patients,particularly those of Asian origin,maintain a lower body mass index threshold in the presence of uncontrolled ***,several comorbidities often accompany these chronic diseases and need to be addressed for successful surgical *** Roux-en-Y gastric bypass(RYGB)and laparoscopic sleeve gastrectomy(LSG)are the most commonly used bariatric procedures *** bariatric benefits of RYGB and LSG are similar,but emerging evidence indicates that RYGB is more effective than LSG in improving glycemic control and induces higher rates of long-term DM *** scoring systems have been formulated that are utilized to predict the chances of remission.A glycemic target of glycated hemoglobin<7%is a reasonable goal before ***,pulmonary,gastrointestinal,hepatic,renal,endocrine,nutritional,and psychological optimization of surgical candidates improves perioperative and long-term *** guidelines for preoperative care of individuals with obesity have been formulated,but very few specifically focus on the concerns arising from the presence of concomitant *** is hoped that this statement will lead to the standardization of presurgical management of individuals with DM undergoing metabolic surgery.

关键词： Diabetes Obesity Metabolic surgery Bariatric surgery Remission of diabetes

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