Thesis Archive
COMPARISON OF COMMERCIALLY AVAILABLE MUSHROOM CHITOSAN AND LABORATORY PREPARED COMMON MUSHROOM (AGARICUS BISPORUS) CHITOSAN IN POST TREATING ACID MINE DRAINAGE (AMD)
Lintag, Nazario Emil S.
Ngan, Charles Ivan L.
Soriano, Elijah Jeremie D.
Abstract:
Mining greatly contributes to the gross domestic product and economy of a country. However, one of the most severe environmental issues of mining activity is the production of mine impacted water also referred to as acid mine drainage (AMD). Due to its devastating impact onto aquatic and terrestrial ecosystems, several treatment methods, both passive and active, have been proposed and used for abating AMD. Yet, most of these methods has largely been limited by factors such as cost and generation of excessive secondary sludge, and deterioration of water quality due to AMD has been reported, hence indicating a need for post treatment. Therefore, this study proposes a post treatment approach using chitosan to further treat and purify the simulated pretreated AMD results from previous studies to a level appropriate for the intended reuse. In this study, the performance of commercial chitosan is used as a natural coagulant for post treatment of AMD. The treatment underwent a jar test considering the mixing speed, contact time, and chitosan concentration. The removal of the heavy metals focused on copper, iron, and nickel. The laboratory prepared chitosan was then compared with the commercially available chitosan. Therefore, studies have been carried out for evaluation of using cheaper yet effective methods in post treating the wastewater containing heavy metals in acid mine drainage (AMD).
Adviser:
Orbecido, Aileen H.