Adsorption at the liquid–solid interface has numerous applications in the removal of toxic materials and organic pollutants from water. The present work reports the adsorption of maleic acid onto activated carbon obtained from coconut (Cocos nucifera) leaves. Three types of activated carbons were synthesized by different methods: physical, chemical and microwave activation. In this work, we characterized these methods by XRD, SEM, TGA and FTIR spectroscopic analysis. Activated carbons were subjected to adsorption of maleic acid and the process of adsorption was studied as a function of concentration of acid, contact time and temperature. The polar C–O functional group of the carbon surface attracts H+ ions from the acid solution. This interaction is responsible for the adsorption process. The adsorption data were fitted to Freundlich and Langmuir isotherms. The process of adsorption was found to follow second order kinetics. The effect of temperature on adsorption was also studied and the activation energy, change in enthalpy and entropy were calculated based on the theory of absolute reaction rate expressions.
Research on Chemical Intermediates – Springer Journals
Published: Feb 11, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera