Basic studies on the dual-polymer flocculation of iron hydroxide / Adegbite Adeleke Adesipo.

Includes bibliographical references.

The efficiency of synthetic flocculants in flocculation processes has been identified by several authors over the years, and this makes it applicable in the industry. Nowadays, studies are focused on the combination of polymers for optimal performance. In this study, the physicochemical conditioning of iron hydroxide suspension (obtained sludge from the lignite mined sites in the Lusatia region of Germany) was investigated with flocculants of different properties as single polymer conditioning (C492 and A130) and as dual-polymer conditioning (C492+N300, A130+N300 and C492+A130) using Jar test. C492 is a cationic flocculant, A130 is an anionic flocculant, and N300 is a non-ionic flocculant. Turbidity of the supernatant and the sludge volume index were the assessing parameters considered under dosage range of 0.4, 0.8, 1.2, 2.0, 2.8 and 3.6 mg/gTS. The obtained optimization results were compared to the actual separation with respect to specific filtration resistance from pressure filtration. The obtained results show some interesting differences which are discussed in this book.

Online resource; title from PDF title page (EBSCO, viewed March 29, 2019).

Basic Studies on the Dual-Polymer Flocculation of the Iron Hydroxide; Abstract; Table of Contents; List of Figures; List of Tables; 1. Introduction; 1.1 Study Objectives; 2. Literature Review; 2.1 Solid Liquid Separation; 2.2 Theory of Flocculation; 2.2.1 Flocculation and Energy Barrier; 2.2.2 Flocculants; 2.2.3 Flocculation Mechanisms; 2.2.4 Factors Affecting Flocculation; 2.3 Flocculation Assessment; 2.4 Charge Characterization; 2.5 Filtration Technique; 2.5.1 Pressure Filtration; 2.5.2 Specific Filtration Resistance; 2.5.3 Tendency of Deviation; 3. Materials and Methods; 3.1 Materials

3.2 Method3.2.1 Charge Quantification; 3.2.2 Flocculation Tests (Jar Test); 3.2.3 Pressure Filtration; 4. Result and Discussion; 4.1 Physicochemical Optimization Process Results; 4.1.1 Optimum Dosage for Single Polymer Conditioning; 4.1.2 Optimum Dosage for Dual Polymer Conditoning; 4.2 Comparison of the Physicochemical Results; 4.3 Pressure Filtration Process; 4.3.1 Single Polymer Filtration Result; 4.3.2 Dual poylmer Filtration Result; 4.4 Comparison of the Specific Filtration Resistance; 5. Conclusions and Further Studies; References; Appendix

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