Abstract: n this article, the multifaceted linkages between environmental disasters, poverty and vulnerability is investigated through a case study carried out in one of the most remote areas of Bangladesh. Because of its geographical location, Bangladesh is dreadfully susceptible to disasters, such as cycles of flash floods, storm surges and cyclones. Afforestation is recommended as a means of embankment in the floodprone area. The authors therefore place conducted literature review on coastal afforestation as a sustainable option for protection against the natural hazards. Also, qualitative approaches, such as in-depth interviews, focus group discussions and observations were held for understanding people‟s responses to and the impact of a disaster in vulnerable sites. The field research compared a combination of participant observations and nonparticipant external interactions with coastal communities. The study shows afforestation as having great promise to not only be an effective method of

• Publication Date: 24-Sep-2017
• DOI: 10.15224/978-1-63248-136-8-24
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Abstract: Hydrocyclones are compact devices employed mainly for solid-liquid separation. CaCO3 separation from a 1% v/v aqueous suspension using a 15 mm diameter Bradley mini-hydrocyclone was studied both numerically and experimentally. The aim of this study was to compare experimental data with those obtained numerically, using three different approaches: stationary, pseudo transient and transient. Pressure and tangential velocity profiles, pressure drops, flow ratios, reduced grade efficiency curves, reduced cut sizes and reduced total efficiencies were compared. The simulated results agree for transient and pseudo transient regimes, and there is a reasonable agreement when comparing numerical and experimental data.

• Publication Date: 24-Sep-2017
• DOI: 10.15224/978-1-63248-136-8-25
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