Publications by authors named "Ratnajit Saha"

Article Synopsis
  • Organic waste management is crucial for reducing environmental impact and reusing waste, leading researchers to assess wood ash (WA) and paper sludge (PS) from a paper mill as effective potting media for soil enhancement.
  • Various combinations of WA, PS, and biochar (BC) were tested with sandy loam podzolic soil, revealing significant changes in soil properties including pH levels, bulk density, and water retention capabilities.
  • The study indicates that while WA, PS, and BC can improve potting media quality, further research is necessary to understand their influence on plant growth and nutrient absorption.
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This study, conducted in 40 selected upazilas covering four hydrological regions of Bangladesh, aimed at determining the risk of selected shallow tubewells (depth<30m) used for drinking purpose (n=26,229). This was based on WHO's sanitary inspection guidelines and identifying the association of sanitary inspection indicators and risk scores with microbiological contamination of shallow tubewells. The main objective of the study was to observe the seasonal and regional differences of microbial contamination and finally reaching a conclusion about safe distance between tubewells and latrines by comparing the contamination of two tubewell categories (category-1: distance ≤10m from nearest latrine; n=80 and category 2: distances 11-20m from nearest latrine; n=80) in different geographical contexts.

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