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Sudip Kumar Das

Bio: Sudip Kumar Das is an academic researcher from University of Calcutta. The author has contributed to research in topics: Adsorption & Pressure drop. The author has an hindex of 31, co-authored 243 publications receiving 5112 citations. Previous affiliations of Sudip Kumar Das include Calcutta National Medical College & Butler University.


Papers
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TL;DR: In this article, the removal of Cr(VI) from aqueous solution by batch adsorption technique using different low-cost adsorbents was investigated, and the effect of pH, adsorbent type and concentration, initial Cr (VI) concentration and contact time on the selectivity and sensitivity of the removal process was investigated.

583 citations

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TL;DR: In this article, the removal of Zn(II) from aqueous solution by different adsorbents was investigated and the results showed that clarified sludge has the largest capacity and affinity for the removal compared to the other adsorbants used in the study.

439 citations

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TL;DR: The ability of activated alumina as synthetic adsorbent was investigated for adsorptive removal of Cd (II) and Pb(II) ions from aqueous solutions and showed the suitability ofactivated alumina in waste water treatment plant operation.

417 citations

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TL;DR: The present study deals with the adsorption of Pb(II) from aqueous solution on rice husk ash, a by-product generally obtained from rice mill, and the suitability of the process in waste water treatment operation.

326 citations

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TL;DR: In this paper, the ability of saw dust and neem bark as low-cost natural adsorbents was investigated for adsorptive removal of Zn(II) and Cd(II)- ions from aqueous solutions.

243 citations


Cited by
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01 Jan 2020
TL;DR: Prolonged viral shedding provides the rationale for a strategy of isolation of infected patients and optimal antiviral interventions in the future.
Abstract: Summary Background Since December, 2019, Wuhan, China, has experienced an outbreak of coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Epidemiological and clinical characteristics of patients with COVID-19 have been reported but risk factors for mortality and a detailed clinical course of illness, including viral shedding, have not been well described. Methods In this retrospective, multicentre cohort study, we included all adult inpatients (≥18 years old) with laboratory-confirmed COVID-19 from Jinyintan Hospital and Wuhan Pulmonary Hospital (Wuhan, China) who had been discharged or had died by Jan 31, 2020. Demographic, clinical, treatment, and laboratory data, including serial samples for viral RNA detection, were extracted from electronic medical records and compared between survivors and non-survivors. We used univariable and multivariable logistic regression methods to explore the risk factors associated with in-hospital death. Findings 191 patients (135 from Jinyintan Hospital and 56 from Wuhan Pulmonary Hospital) were included in this study, of whom 137 were discharged and 54 died in hospital. 91 (48%) patients had a comorbidity, with hypertension being the most common (58 [30%] patients), followed by diabetes (36 [19%] patients) and coronary heart disease (15 [8%] patients). Multivariable regression showed increasing odds of in-hospital death associated with older age (odds ratio 1·10, 95% CI 1·03–1·17, per year increase; p=0·0043), higher Sequential Organ Failure Assessment (SOFA) score (5·65, 2·61–12·23; p Interpretation The potential risk factors of older age, high SOFA score, and d-dimer greater than 1 μg/mL could help clinicians to identify patients with poor prognosis at an early stage. Prolonged viral shedding provides the rationale for a strategy of isolation of infected patients and optimal antiviral interventions in the future. Funding Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences; National Science Grant for Distinguished Young Scholars; National Key Research and Development Program of China; The Beijing Science and Technology Project; and Major Projects of National Science and Technology on New Drug Creation and Development.

4,408 citations

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TL;DR: In this article, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed.

2,117 citations

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TL;DR: In this review, an extensive list of plant wastes as adsorbents including rice husks, spent grain, sawdust, sugarcane bagasse, fruit wastes, weeds and others has been compiled and some of the treated adsorbent show good adsorption capacities.

1,663 citations

01 Jan 1912

1,225 citations