Palm Oil Bleaching Using Activated Carbon Prepared from Neem Leaves and Waste Tea

Abstract

Activated carbon is prepared from neem leaves (NLAC) and waste tea (WTAC). Iodine number, surface area, and methylene blue number of NLAC is higher than WTAC. The surface morphology of NLAC through scanning electron microscopy (SEM) confirms the presence of significant pores on its surface. Response surface methodology (RSM) is used to optimize the parameters. Adsorbent dosage influenced the reduction of acid value (AV) at higher temperatures. The effect of contact time is very marginal. NLAC performed better than WTAC in bleaching of palm oil at optimum parameters. 86.7% and 62.3% reduction in the acid value (AV) was observed using low cost adsorbents NALC and WTAC, respectively.

Treatment of Industrial Saline Wastewater Using Eco-Friendly Adsorbents

“…Gravity separation [5], dissolved air fotation [5], membrane fltration [2], ion exchange, electrocoagulation [3], adsorption [6][7][8], advanced oxidation processes [9,10], electrodialysis [11], chemical oxidation [12], biological aerated flters [13] and so on were some of the technologies used to treat the pollutants present in OPW. Enormous eforts have been made to develop cost-efective technologies for the treatment of OPW.…”

“…In the reference cited, the percentage removal of oil droplets was linearly changed with adsorbent dosage, contact time, and pH [6]. In other work, activated carbon prepared from waste neem leaves and waste tea powder was employed to bleach the oil [7]. Black walnut media flters were used in a 48-in packed bed system for the removal of oil from OPW.…”