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Preparation of modified rice straw-based bio-adsorbents for the improved removal of heavy metals from wastewater 1 1 Introduction 1 2 Materials and methods 2 2.1 Chemicals and reagents 2 2.2 Sample collection 2 2.3 Preparation of rice straw adsorbent 3 2.3.1 Raw Rice Straw Adsorbent (RRS) 3 2.3.2 Alkali Treated Rice Straw Adsorbent (ARS) 3 2.3.3 Rice Straw Biochar (BRS) 3 2.4 Characterization of bio-adsorbent 3 2.4.1 Fourier-Transform Infrared Spectroscopy (FTIR) 3 2.4.2 Scanning Electron Microscopy (SEM) 3 2.4.3 Bulk density analysis 3 2.4.4 Cation-Exchange Capacity (CEC) 3 2.4.5 Total Carbon (TC) 3 2.4.6 pH of the sample 3 2.4.7 Metal estimation 3 2.5 Optimization of metal adsorption by using rice straw-based adsorbents 4 2.5.1 Preparation of metal ion solution 4 2.5.2 Optimization of batch experiment adsorption process using response surface methodology (RSM) 4 2.6 Column study 5 2.7 Adsorption dynamics 5 2.8 Statistical analysis 6 3 Results and discussions 6 3.1 Characteristics of the prepared adsorbents 6 3.2 Effect of different factors on metal adsorption 7 3.2.1 Fitting the model 7 3.2.2 Effect of pH (X1) 7 3.2.3 Effect of contact time (X2) 8 3.2.4 Effect of initial metal co

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It is typically read by self-directed learners exploring a subject in depth.

Common subject areas: history, science, philosophy, social sciences.

Language
UND
Category
nonfiction

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