effect of gypsum and polyacrylamide application at thailand

effect of gypsum and polyacrylamide application at thailand
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  • Does anionic polyacrylamide reduce soil erosion?
  • Anionic polyacrylamide (PAM) has the potential to reduce soil erosion through soil conditioning. However, a comprehensive study about its effectiveness especially when applied combined with other amendments have rarely been conducted in the tropical highland climatic conditions, such as in Ethiopia.
  • Does gypsum improve soil aggregation?
  • Hence, applying PAM in mixture with sources of calcium electrolyte (Ca 2+ ), such as gypsum or lime, enhances its effectiveness in reducing runoff and soil loss, consequently improving soil aggregation ( Lee et al., 2010 ).
  • Can gypsum remove Al compounds from acidic soil?
  • Treating acidic soils with medium to high rates of gypsum, which has high solubility (∼2 g L −1) and mobility, could remove Al compounds (which act as binding agents) in the soil solution by forming the ion pair Al 2 (SO 4) 3 ( Ernani et al., 2006 ), which would enhance dispersion and thus increase runoff and soil loss ( Nishimura et al., 2005 ).
  • What is polyacrylamide (PAM) used for?
  • npj Clean Water 1, Article number: 17 ( 2018 ) Cite this article High molecular weight (10 6 –3 × 10 7 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.