a landfill contains leachate with a chloride concentration of 2135mg/l. the landfill has a clay liner that is 2m thick and has a tortuosity coefficient of 0.5. the diffusion coefficient for chloride is 2.3×10-⁹. after 50years what would be the chloride concentration just outside of the clay liner? assume theres no ground water gradient across the liner How long would it take for chloride to be detected just outside the clay liner at the secondary MCL of 250mg/L? Assume diffusion is the only mechanism

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Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.