Abstract
Activated carbons were prepared by phosphoric acid activation of Canarium Schweinfurthii spent nutshell. The activation conditions for particles with average diameter of 2.36 mm, conducted in nitrogen chamber, were evaluated at 40 and 60% acid concentration, substrate/activating agent (impregnation) ratio of 1:1 to 1:4, activation time of 20 to 60 min and temperatures of 200 and 400°C. The results showed that the yield, BET surface area and adsorption capacities of activated carbon produced increased with impregnation ratio, activation time and temperatures. The activated carbon obtained using 1:4 impregnation ratios at 60 min with 40 wt% acid solution have BET surface area and adsorption capacity of 741 m2/g and 8.5 gMB/g Carbon while those for 60wt% acid solution were determined as 779 m2/g and 9.2 gMB/g Carbon, respectively. Key words: Canarium schweinfurthii, activated carbon, phosphoric acid, methylene blue, impregnation ratio, dyes.
Highlights
IntroductionPaper, dyeing, plastic, and textile industries use dyes for coloring their products
Paper, dyeing, plastic, and textile industries use dyes for coloring their products. These industries generate large quantity of waste water containing residual dyes, which are often discharged to the environment with or without treatment (Ehrampoush et al, 2011; Sreedhar and Kotaiah, 2006)
The present study shows that a viable adsorbent can be prepared from C. schweinfurthii nutshell through phosphoric acid activation with significant yield and good surface area
Summary
Paper, dyeing, plastic, and textile industries use dyes for coloring their products. These industries generate large quantity of waste water containing residual dyes, which are often discharged to the environment with or without treatment (Ehrampoush et al, 2011; Sreedhar and Kotaiah, 2006). The release of dyes into waters causes immediate visible pollution aside from contamination due to its organic and toxic nature. The presence of these dyes is objectionable because it interferes with light penetration and reduces photosynthetic activity (Weisburger, 2002).
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
