Development of Newer Adsorbents: Activated Carbons Derived from Carbonized <i>Cassia fistula</i>

Sorokhaibam, Laxmi Gayatri; Bhandari, Vinay M.; Salvi, Monal S.; Jain, Saijal; Hadawale, Snehal D.; Ranade, Vivek V.

doi:10.1021/acs.iecr.5b02945

Cited by 39 publications

(24 citation statements)

References 34 publications

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“…Recently, Zhao et al [3] reported ceramic adsorbent for treating high concentration ammonium contaminated wastewaters; Kim et al [14] suggested amine-grafted adsorbent for recovery of nitrates and phosphates from wastewaters. Newer adsorbents in the form of activated carbons derived from Cassia Fistula were also reported for industrial wastewater treatment [15]. Various researchers have also studied the effectiveness of a variety of low cost materials for ammonia removal such as clay and zeolites, limestone [16][17][18][19][20];…”

Section: Adsorption and Hydrodynamic Cavitationmentioning

confidence: 99%

Industrial wastewater treatment for fertilizer industry—A case study

Bhandari

Sorokhaibam

Ranade

2016

Desalination and Water Treatment

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Wastewaters from chemical fertilizer industry mainly contain organics, alcohols, ammonia, nitrates, phosphorous, heavy metals such as cadmium and suspended solids. The nature of effluent streams varies in terms of its constituents and complexity. The present work attempts to fill the void in the literature that mostly reports synthetic wastewater treatment studies; by evaluating effluent treatment solutions and comparison of different methods for real wastewaters from the fertilizer industry. An attempt has been made to devise suitable methodology mainly using a new device in the form of vortex diode for hydrodynamic cavitation and also using adsorption, for several real wastewater streams from different locations in one major fertilizer industry of Maharashtra, India. The strategy involved characterization of wastewaters, studies on the effective removal of Chemical Oxygen Demand(COD) and devising solutions for effective reduction in ammoniacal nitrogen-a more serious issue in the fertilizer industry. The characterization of wastewaters from different streams revealed huge variation in COD from 50 to 140,000 ppm and ammoniacal nitrogen from 6 to 1700 ppm. Some effluent streams contained alcohol up to 5 %. Hydrodynamic cavitation using vortex diode and adsorption with modified carbons were used to treat these streams. Cavitation studies were carried out on a pilot plant and the effect of pressure drop, cavitating device and process intensification were studied. It was observed that the effluent treatment strategy requires careful identification and application of suitable treatment method on the basis of the nature of the effluent. Also, hydrodynamic cavitation, using vortex diode appears to be techno-economically attractive option in treating fertilizer wastewaters giving a very high reduction in COD and ammoniacal nitrogen (up to 85%), similar to adsorption. The results clearly identify potential of newer methodologies in the treatment of effluents in the fertilizer industry.

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Section: Adsorption and Hydrodynamic Cavitationmentioning

confidence: 99%

Industrial wastewater treatment for fertilizer industry—A case study

Bhandari

Sorokhaibam

Ranade

2016

Desalination and Water Treatment

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“…On the other hand, the isotherm shape of CB[6]@AC composite could be categorized as type IV, indicating the presence of micro and mesopores. The microporous behaviour has been assigned to CB[6] inside of pore of the AC, however, the BET model has less applicability to micropores materials [37], leading to small value of surface area (196 m 2 g -1 ) and pore volume (0.17 cm³ g -1 ) displayed for CB[6]@AC in detriment to AC and EuBDC@AC (S1 Table). …”

Section: Resultsmentioning

confidence: 99%

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

et al. 2017

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New porous composites LnBDC@AC (AC = Activated carbon, Ln = Eu and Gd and BDC = 1,4-benzenedicaboxylate) and CB[6]@AC (CB[6] = Cucurbit[6]uril) were obtained using hydrothermal route. The LnBDC and CB[B] are located inside the pore of the carbon materials as was observed in SEM-EDS, XRPD and FT-IR analysis. Porosimetry analysis showed values typically between AC and LnBDC material, with pore size and surface area, respectively, 29,56 Å and 353.98 m2g-1 for LnBDC@AC and 35,53 Å and 353.98 m2g-1 for CB[6]@AC. Both materials showed good absorptive capacity of metil orange (MO) and methylene blue (MB) with selectivity as a function of pH. For acid pH, both materials present selectivity by MB and alkaline pH for MO, with notable performance for CB[6]@AC. Additionally, europium luminescence was used as structural probe to investigate the coordination environment of Eu3+ ions in the EuBDC@AC composite after adsorption experiment.

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“…The pods of Pongamia pinnata were collected from the local area of Nagpur, India, and washed thoroughly with tap water to remove all the impurities and sun-dried for 12 h. The dried shells were ground to fine powder of uniform size through sieving (60/ASTM 30, the width of aperture: 0.592 mm). The next step consisted of chemically activating the samples with orthophosphoric acid (1:1; w/v) at 60 °C for 1 h [26]. Acid-treated paste was then placed inside a muffle furnace maintained at 500 °C for 1 h at a heating rate of 10 °C per hour.…”

Section: Preparation Of Pp and Ni@pp Adsorbentmentioning

confidence: 99%

Desulfurization studies of liquid fuels through nickel-modified porous materials from Pongamia pinnata

Zaidi

Sorokhaibam

2020

Appl Petrochem Res

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A new biomass-based carbonaceous adsorbent has been developed from Pongamia pinnata and its effect upon nickel modification- and adsorption-coupled ultrasonication was investigated. Adsorption experiment of the model oil constituting 50 ppm dibenzothiophene in cyclohexane showed the maximum capacity as 8.11, 13.36, and 17.15 mg·g−1 for the commercial carbon DARCO, virgin bio-adsorbent PP, and nickel-modified adsorbent Ni@PP, respectively, with the time required for attaining equilibrium being the fastest in Ni@PP (120 min). The significant effect of ultrasonication was in attaining faster kinetics where ~ 96–98% removal was achieved in only 30 min. Also, the developed adsorbents had a very good specific surface area of 915 and 677 m2·g−1, respectively, for PP and Ni@PP. Investigation of the effect of higher initial sulfur concentration (200 ppm) indicated the significance of Ni modification, where a very high capacity of 66.18 mg·g−1 for Ni@PP was attained against 30.90 mg·g−1 for PP and 13.18 mg·g−1 for DARCO. Ni@ PP was also effective for the simultaneous removal of more refractory sulfur fractions from multicomponent model fuel systems and exhibited good regeneration ability till the fourth cycles or more. Cost estimation showed that the developed adsorbents are relatively ten times cheaper than commercial carbon, while the fixed-bed study indicated a breakthrough time of 250 min and 270 min for PP and Ni@PP, respectively. Graphic abstract

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Development of Newer Adsorbents: Activated Carbons Derived from Carbonized Cassia fistula

Cited by 39 publications

References 34 publications

Industrial wastewater treatment for fertilizer industry—A case study

Industrial wastewater treatment for fertilizer industry—A case study

New Composites LnBDC@AC and CB[6]@AC: From Design toward Selective Adsorption of Methylene Blue or Methyl Orange

Desulfurization studies of liquid fuels through nickel-modified porous materials from Pongamia pinnata

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