Dragon Fruit Plant As Coagulants In Latex Concentrated Waste Water

    Project Code: 139
    This innovation presents an effective plant based natural coagulant utilizing dragon fruit foliage for the treatment of concentrated latex effluent. This method offer an eco friendly option compared with ferric sulfate, a chemical coagulant.
Project Overview

This innovation presents an effective plant based natural coagulant utilizing dragon fruit foliage for the treatment of concentrated latex effluent. This method offer an eco friendly option compared with ferric sulfate, a chemical coagulant.

Dragon fruit is a round and often red-colored fruit with scales-like texture and is native to South American countries, which is also cultivated and heavily marketed in Southeast Asian countries. Its foliage represents a part of its overall plant system. It can be found abundantly but of no particular usage. In commercial production of the fruits, proper foliage thinning is important in achieving a good fruit size and yield

Latex effluent is one of the main byproduct from rubber processing factories in Malaysia. Currently, Malaysia is the third largest natural rubber (NR) producer in the world with total productions of natural rubber in 2011 is 996,210 tonnes for both dry and latex amounted to almost RM 13,278 million. It is estimated that in average, 20 tonnes of rubber and 410 thousand litres of effluent per day are produced by rubber factory and some reported 80 million litres of untreated rubber effluent are discharged daily into streams and rivers from the rubber processing factories in Malaysia. Untreated latex concentrate effluent comprises a large quantity of water for washing and cleaning of raw materials, small amount of uncoagulated latex, and serum (protein, carbohydrate, lipid, carotenoids, and salt). Highly contaminated water with high BOD depletes dissolved oxygen present in the water and eventually affects aquatic life.

Three main parameters were investigated, namely chemical oxygen demand (COD), suspended solids (SS), and turbidity of effluent. It is concluded that the foliage showed tremendous potential as a natural coagulant for water treatment purposes. The foliage could be used in the pretreatment stage of Malaysian latex effluent prior to secondary treatment.