Determination of Point Zero Charge (PZC) of Homemade Charcoals Of Shorea Robusta (Sakhuwa) and Pinus Roxburghii (Salla)
Ajaya Bhattarai, Manoj Khanal, Debendra Rai, Rajendra Khanal
Abstract
The point of zero charge (PZC) values of adsorbents predicts the ease of substrate to adsorb potentially harmful ions like those of pesticides, dyes, etc. Charcoals of locally available woods of Shorea robusta (Local name: Sakhuwa) and Pinus roxburghii (Local name: Salla) possess at home. For reference, commercial activated charcoal was also taken. The points of zero charge of charcoals of all adsorbents under study were determined by a well-known pH drift method. The PZC of Sakhuwa, Salla and commercial charcoals were 2.9, 4.1 and 5.0 respectively. The analyzed PZC values predict that the charcoals of Sakhuwa and Salla have adsorption capacity in the acidic region and attract anions towards them.