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Adsorption Pollution Leather Tanning Industry Wastewater by Chitosan Coated Coconut Shell Active Charcoal
Besides having advantages, Chitosan as biosorbent has also disadvantages. . Chitosan is very soluble in low pH so
it cannot adsorb Cr (total) at low pH. It is due to active site (amine group) of chitosan undergo protonation and its
adsorption capability is easily influenced by anions in waters. The research studied use of chitosan coating active
charcoal of coconut shell to increase adsorption capability of Cr (total), BOD, COD. This research was done to
evaluate characteristic of liquid waste quality with IPAL or without IPAL and compare with Regulation of DIY
Governor number 7/2010. It studied also effect of pH and Concentration of chitosan coating active charcoal as
adsorbent on decrease in Cr (total), BOD, and COD concentration on liquid waste of leather tanning. The results
indicate liquid waste of leather tanning industry with IPAL and without IPAL have exceeded quality standard of
liquid wast e of leather tanning industry. ANOVA statistical test indicated Cr (total), BOD, COD are significant at
5% (p
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