Metal ion removal from water by sorption on paper mill sludge

Calace, N.; Nardi, Elisa; Petronio, B.M.; Pietroletti, Marco; Tosti, Giulia

doi:10.1016/s0045-6535(02)00864-0

Cited by 52 publications

(28 citation statements)

References 19 publications

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“…The results of research studies have shown that PMS can be indirectly used as an active absorbent by converting it into activated carbon (Ben-Reuven, 2007). It can be used as binding material for the removal of heavy metals ions from water (Battaglia et al, 2003;Calace et al, 2003, Hea et al, 2010Ahmaruzzaman, 2011), removal of phenols (Calace et al, 2002) and as an absorbent for hard surfaces cleaning (Lowe et al, 1988;Eifling and Ebbers, 2006). A variety of the processes and different absorbent products have been developed for commercial purposes.…”

Section: Utilisation Pms For Sorbent Productionmentioning

confidence: 99%

Recent Advances in Paper Mill Sludge Management

Likon¹,

Trebše²

2012

Industrial Waste

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Section: Utilisation Pms For Sorbent Productionmentioning

confidence: 99%

Recent Advances in Paper Mill Sludge Management

Likon¹,

Trebše²

2012

Industrial Waste

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“…On the other hand, chemical activation by ZnCl2 contributes to pore structure more than activation by KOH. Finally, although sources of paper mill sludge are different, great difference of surface area between processed sludge samples and unprocessed ones [14,23] is indicative of chemical and physical activation effect on porosity of the adsorbent. J a n u a r y 0 9 , 2 0 1 5…”

Section: Comparative Studiesmentioning

confidence: 99%

Removal of BTEX from aqueous solutions by paper mill sludge-based activated carbon

Aghdam

Baghdadi

Fard

2015

JAC

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The removal of BTEX (benzene, toluene, ethyl-benzene and p-xylene) from contaminated groundwater was evaluated by paper mill sludge-based activated carbon, prepared by chemical activation and pyrolysis.The effects of pH, time, adsorbent dosage and adsorbate concentration were studied through batch adsorption experiments. Selected physical and chemical characteristics of the adsorbents, such as specific surface area (613m 2 /g), pore volume distribution (micropore: 277cm 3 /g, mesopore: 365cm 3 /g) and surface functional groups (carboxylic, alkyl and aliphatic groups) were determined by N2 adsorption-desorption diagram and FTIR, respectively. The removal efficiency of the four target compounds would be more than 92 %, which the initial concentrations of BTEX and the adsorbent dosage were 40 mg/l and 1000 mg/l, respectively. It was proved that pH and ionic strength have insignificant effects on the adsorption efficiency. The order of adsorption amount in all experiments was > ethyl-benzene > toluene > benzene. The kinetic data proved a closer fit to the pseudo-first-order model. The isotherm experimental data showed a better fit to either Freundlich or Langmuir model. In addition, a series of experiments was conducted to evaluate the capacity of the adsorbent in adsorbing the BTEX from a groundwater sample contaminated with gasoline.

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“…The MRH column cannot be reused, probably due to the saturation of the binding sites with H + ions during the desorption process. Calace et al (2003) found that HCl can be used in the recovery of Cu 2+ and Cd 2+ from paper mill sludge column but the eluting process caused the sorbing sites to be saturated with hydrogen ions, thus hindered it from repeated usage.…”

Section: Sorption and Desorptionmentioning

confidence: 99%

Basic and Reactive Dyes Sorption Enhancement of Rice Hull through Chemical Modification

Ong¹

2010

American Journal of Applied Sciences

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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 nonporous 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 H 2 SO 4 and HCl but the desorption experiments of RO16 using NH 3 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).

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Metal ion removal from water by sorption on paper mill sludge

Cited by 52 publications

References 19 publications

Recent Advances in Paper Mill Sludge Management

Recent Advances in Paper Mill Sludge Management

Removal of BTEX from aqueous solutions by paper mill sludge-based activated carbon

Basic and Reactive Dyes Sorption Enhancement of Rice Hull through Chemical Modification

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