Abstract
The preparation of activated carbon (AC) from sago industry waste is a promising way to produce a useful adsorbent for Cu(II) removal, as well as dispose of sago industry waste. The AC was prepared using sago industry waste with H2SO4and (NH4)2S2O8and physico-chemical properties of AC were investigated. The specific surface area of the activated carbon was determined and its properties studied by scanning electron microscopy (SEM). Adsorptive removal of Cu(II) from aqueous solution onto AC prepared from sago industry waste has been studied under varying conditions of agitation time, metal ion concentration, adsorbent dose and pH to assess the kinetic and equilibrium parameters. Adsorption equilibrium was obtained in 60min for 20 to 50mg/L of Cu(II) concentrations. The Langmuir and Freundlich equilibrium isotherm models were found to provide an excellent fitting of the adsorption data. In Freundlich equilibrium isotherm, the RL values obtained were in the range of 0 to 1 (0.043 to 0.31) for Cu(II) concentration of 10 to 100mg/L, which indicates favorable adsorption of Cu(II) onto Sago waste carbon. The adsorption capacity of Cu(II) (Qo) obtained from the Langmuir equilibrium isotherm model was found to be 32.467 mg/g at pH 4 ± 0.2 for the particle size range of 125–250u. The percent removal increased with an increase in pH from 2 to 4. This adsorbent was found to be effective and economically attractive.
Highlights
The BET surface area was higher (625m2/g) than those of some other carbons prepared from agricultural wastes such as peanut hull (208m2/g), coir pith (595m2/g), eichhornia (266m2/g) cassava peel (200m2/g) and coconut tree saw dust carbon (325m2/g) which is more important for adsorption processes8,10,11
Activated carbon prepared from sago waste can be used as an adsorbent for the effective removal of Cu(II) from aqueous solution
Analysis of scanning electron microscopy (SEM) images showed that the sago waste surface was rough and possessed micropores
Summary
Heavy metal is important role of water pollution. The heavy metal contamination of the water system is responsible for serious diseases and death. Copper is a trace element that is drinking water essential for most animals, including humans of that iron metabolism and maintenance of blood vessels. It is essential to remove Cu from industrial wastewater before discharging in to natural water sources to meet National Regulatory Standards as well as to protect public health. Conventional treatment methods for heavy metals containing waste water, chemical precipitation, Ferrite treatment system, sulphate precipitation, solvent extraction, evaporation, xanthate process etc., but due to operational demerits and the treatment cost is high .The need for cost effective and economic removal of toxic heavy metals from waste water resulted in a research for non-conventional materials and methods. Several low cost adsorbents include sawdust, orange peel, almond husk, parthenium etc
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
