Abstract
Problem statement: Many studies have been conducted on the removal of either anionic or cationic dyes. However, as a mixture of dyes does commonly exist together in wastewater, therefore it is of great interest to have a material that can remove both types of dyes. Approach: To prepare an inexpensive and efficient sorbent by chemically modifying rice hull for the removal of both basic and reactive dyes. Different chemical modifications were performed on rice hull and a comparison study on the uptake of dyes was carried out. Optimization study was carried out on most promising modified rice hull. Surface morphology of modified rice hull was examined and the functional groups present were determined using FTIR. Results: From the results, it appeared that by using EDA modified rice hull, an appreciable amount of both dyes could be sorbed. Varying the EDA/NRH ratios and heating temperatures affected the uptake of BB3 and RO16. The investigated sorbents were non-porous materials, due to the absence of pores and cavities. Sorption-desorption study showed that a complete recovery of BB3 can be obtained using high concentrations of H2SO4 and HCl but the desorption experiments of RO16 using NH3 and NaOH were not successful. Conclusion: The modification of rice hull with EDA under the optimum conditions (in a ratio of 1.00 g of NRH to 0.02 mole of EDA in a well stirred water bath at 80°C for 2 h) resulted in the formation of a sorbent (MRH) that could be used successfully to remove Both Basic (BB3) and Reactive dyes (RO16).
Highlights
Investigations have shown that low cost sorbents such as Neem leaf powder, hazelnut shells, rice hull and Removal of color from industrial effluents is a wood shavings have the potential of being used as challenging problem in controlling environmental alternative sorbent for the removal of dyes from pollution
Activated carbon used together in wastewater it is of great interest to have a as the adsorbent is costly and difficult to regenerate material that can remove both types of dyes
Nitrilotriacetic acid treated rice hull: Rice hull was modified in a ratio of 1.0 g of Natural Rice Hull (NRH) to 7 mL of Sorbents: For the present study, various sorbents are prepared as follows
Summary
Investigations have shown that low cost sorbents such as Neem leaf powder, hazelnut shells, rice hull and Removal of color from industrial effluents is a wood shavings have the potential of being used as challenging problem in controlling environmental alternative sorbent for the removal of dyes from pollution. Most of the materials that could remove dyes that are commonly used in the investigated are efficient in binding either cationic or industry. Adsorption is one of the noteworthy anionic dyes but not both. As they do commonly exist treatment processes. The present project aims to modify rice hull, an research exploring the potential of alternative low-cost agricultural by-product, to produce a material that could materials as sorbents for dyes.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
