Contribution of agro‐waste material main components (hemicelluloses, cellulose, and lignin) to the removal of chromium (III) from aqueous solution

García-Reyes, Refugio Bernardo; Rangel-Mendez, J. Rene

doi:10.1002/jctb.2215

Cited by 41 publications

(18 citation statements)

References 19 publications

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“…A small amount of carboxylic functional groups introduced during pulping process are usually pointed out as adsorption sites for MB 48 . Cationic dye and cations show a greater affinity towards hemicellulose and lignin 45,49,50 . After delignification process, hemicellulose and a small amount of lignin remained in holocellulose as evidenced by the compositional analysis.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

et al. 2015

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Cellulose nanofibrils (CNF) were prepared from kenaf core (KC) using acidified-chlorite bleaching method and followed by disintegration using high speed blender. The effects of disintegration time and acid treatment on the defibrillation of holocellulose were studied. Hemicellulose was found to facilitate defibrillation, as CNF without any acid treatment was fully defibrillated after 30 min. The adsorption kinetics of CNF toward cationic dye cannot be accurately determined due to its quick adsorption performance, in which the equilibrium is achieved immediately after 1 min of contact time. The effects of acid treatment on holocellulose, pH, adsorbent dosage, temperature and dye concentration were studied and optimized. Adsorption data were fitted to both Langmuir and Freundlich models where Langmuir model was found to be the better model to describe the adsorption process. Maximum adsorption capacity was found to be 122.2 mg/g at pH 9, 20 °C for the non-acid treated CNF. The CNF can be regenerated by desorption at low pH where, as much as 70 % of dye adsorbed can be desorbed after 6 cycles of adsorptiondesorption cycle.

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Section: Adsorption Isothermsmentioning

confidence: 99%

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

et al. 2015

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“…Based on only the area of abandoned land previously used to grow Agave for fiber (FAO, 2010), there is an opportunity to reinstate Agave agriculture on 1.87 Â 10 5 ha in Mexico, 3.43 Â 10 5 ha in Africa, and 0.67 Â 10 5 ha in other parts of the world. The Agave plantations in Australia pre-date FAO records, but there -Mendez (2009) are regions on the continent that could be allocated to Agave feedstock crops (Holtum et al, 2011). Conversion of abandoned plantations back to Agave would result in minimal indirect land use change because of the low productivity that occurs in these regions.…”

Section: Land Available For Agave Bioenergymentioning

confidence: 99%

The global potential for Agave as a biofuel feedstock

2010

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Large areas of the tropics and subtropics are too arid or degraded to support food crops, but Agave species may be suitable for biofuel production in these regions. We review the potential of Agave species as biofuel feedstocks in the context of ecophysiology, agronomy, and land availability for this genus globally. Reported dry biomass yields of Agave spp., when annualized, range from o1 to 34Mg ha À1 yr À1 without irrigation, depending on species and location. Some of the most productive species have not yet been evaluated at a commercial scale. Approximately 0.6 Mha of land previously used to grow Agave for coarse fibers have fallen out of production, largely as a result of competition with synthetic fibers. Theoretically, this crop area alone could provide 6.1 billion L of ethanol if Agave were reestablished as a bioenergy feedstock without causing indirect land use change. Almost one-fifth of the global land surface is semiarid, suggesting there may be large opportunities for expansion of Agave crops for feedstock, but more field trials are needed to determine tolerance boundaries for different Agave species.

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“…Among these methods, adsorption appears to be the most effective. Many adsorbents including cellulosic materials have been used for the removal of heavy metals including pentavalent arsenic from aqueous solution . But cellulose as such has low adsorption capacity and poor physical stability; so some modification is necessary to improve its performance.…”

Section: Introductionmentioning

confidence: 99%

Arsenic adsorption from contaminated water on Fe(III)‐coordinated amino‐functionalized poly(glycidylmethacrylate)‐grafted TiO₂‐densified cellulose

Anirudhan

Divya

Parvathy

2012

J of Chemical Tech & Biotech

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BACKGROUND: The main aim of this study is to determine the sorptive potential of a novel anion exchanger, Fe(III)‐coordinated amino‐functionalized poly(glycidylmethacrylate)‐grafted TiO2‐densified cellulose (AM‐Fe‐PGDC) for arsenic(V) removal from aqueous solutions by batch technique. RESULTS: The adsorbent was characterized using infrared spectroscopy, powder X‐ray diffraction, scanning electron microscopy, thermogravimetry and potentiometric titrations. The effective pH for removal was 6.0. The adsorption rate was influenced by initial metal ion concentration and contact time. The equilibrium was achieved within 1.5 h and follows a pseudo‐second‐order kinetic model. The adsorption capacity for As(V) calculated using the Langmuir isotherm equation was 105.47 mg g−1. The AM‐Fe‐PGDC developed was used to remove As(V) from simulated groundwater. Regeneration experiments were attempted for four cycles using 0.1 mol L−1 NaCl solution. CONCLUSION: It was found that AM‐Fe‐PGDC is very efficient for the removal of As(V) from aqueous solutions. © 2012 Society of Chemical Industry

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Contribution of agro‐waste material main components (hemicelluloses, cellulose, and lignin) to the removal of chromium (III) from aqueous solution

Cited by 41 publications

References 19 publications

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

The global potential for Agave as a biofuel feedstock

Arsenic adsorption from contaminated water on Fe(III)‐coordinated amino‐functionalized poly(glycidylmethacrylate)‐grafted TiO₂‐densified cellulose

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Contribution of agro‐waste material main components (hemicelluloses, cellulose, and lignin) to the removal of chromium (III) from aqueous solution

Cited by 41 publications

References 19 publications

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

Cellulose nanofibrils: a rapid adsorbent for the removal of methylene blue

The global potential for Agave as a biofuel feedstock

Arsenic adsorption from contaminated water on Fe(III)‐coordinated amino‐functionalized poly(glycidylmethacrylate)‐grafted TiO2‐densified cellulose

Contact Info

Product

Resources

About

Arsenic adsorption from contaminated water on Fe(III)‐coordinated amino‐functionalized poly(glycidylmethacrylate)‐grafted TiO₂‐densified cellulose