Combined chemical-templated activation of hydrolytic lignin for producing porous carbon

Ponomarev, Nikolai; Sillanpää, Mika

doi:10.1016/j.indcrop.2019.03.050

Cited by 43 publications

(18 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since NaOH was used in the synthesis, there are some changes in lignin groups, which can be assumed to be due to possible interaction in alkaline media used in the synthesis. In particular, reactions of destruction and condensation are intrinsic for lignin in the presence of alkali. , The peak of aromatic C–H n stretching at 1709 cm –1 is not observed for LH-MH compared to raw lignin . The peaks at 1150 and 1115 cm –1 , which are ascribed to guaiacylpropane unit, were also changed.…”

Section: Resultsmentioning

confidence: 96%

See 1 more Smart Citation

Lignin-Based Magnesium Hydroxide Nanocomposite. Synthesis and Application for the Removal of Potentially Toxic Metals from Aqueous Solution

Ponomarev

Pastushok

Repo

et al. 2019

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

The pollution of water by potentially toxic metals or socalled heavy metals is the most severe form of environmental impact. Nanocomposites are considered promising materials for the removal of potentially toxic metals from aqueous solution through adsorption or ion exchange. To produce high-performance adsorbent for the removal of Ni 2+ , Cd 2+ , and Pb 2+ , lignin−Mg(OH) 2 nanocomposite (LH-MH) was developed utilizing hydrolytic lignin waste with possible regeneration after metal uptake. The LH-MH was prepared using hydrolytic lignin, magnesium chloride, and NaOH solution by a thermally assisted method. The structure was studied using X-ray diffraction, transmission electron microscopy, and scanning electron microscopy, while chemical composition was evaluated by Fourier transform infrared spectroscopy, thermogravimetric analysis/differential thermogravimetry, and energy-dispersive X-ray spectroscopy mapping. Adsorption was described by the Langmuir and Sips models, whereas kinetics was elucidated by pseudo-first-order and pseudo-second-order models. The obtained material demonstrated a nanocomposite structure indicating well-distributed nano-Mg(OH) 2 onto the lignin polymer matrix. The nanocomposite demonstrated superior removal of Ni 2+ , Cd 2+ , and Pb 2+ . The mechanism of adsorption was investigated indicating ion exchange between toxic metals and Mg 2+ . The obtained adsorbent was successfully regenerated using combined treatment by HCl−MgCl 2 −NaOH.

show abstract

Section: Resultsmentioning

confidence: 96%

“…In particular, reactions of destruction and condensation are intrinsic for lignin in the presence of alkali. 30, 31 The peak of aromatic C−H n stretching at 1709 cm −1 is not observed for LH-MH compared to raw lignin. 32 The peaks at 1150 and 1115 cm −1 , which are ascribed to guaiacylpropane unit, were also changed.…”

Section: Characterization Studiesmentioning

confidence: 96%

Lignin-Based Magnesium Hydroxide Nanocomposite. Synthesis and Application for the Removal of Potentially Toxic Metals from Aqueous Solution

Ponomarev

Pastushok

Repo

et al. 2019

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Since the granular form is used in adsorption columns of water treatment plants and increases the specific weight, the powdered SAC is pelletized using a pelletizer (7) 46,57 . According to the literature and our previous studies, alkali‐activated carbons or alkali‐salt activated carbon can be produced in granular form 8,13,75 . The ash content of chemically activated carbon is low as well as being a soluble fraction since an additional washing stage is used 35,76,77 .…”

Section: Resultsmentioning

confidence: 99%

Techno‐Economic assessment for superactive carbon production from side stream lignin

Ponomarev

O'Shea

Nuortila‐Jokinen

et al. 2022

Biofuels Bioprod Bioref

View full text Add to dashboard Cite

Superactive carbon (SAC), having a high surface area of over 2500 m2/g, could be a superior choice for many applications. However, the manufacture of SAC in bulk quantities is challenging. To demonstrate the possibility of SAC manufacturing in large amounts, a techno‐economic assessment was performed. For that purpose, a new method utilizing a mixture of waste lignin, KOH and KCl was employed. The chemicals were recovered after use. The technical assessment was performed based on laboratory‐scale experimental findings, a simplified process diagram, and mass and heat balance calculations. The economic evaluation was assessed through the estimation of capital costs (CAPEX), operational costs (OPEX) and the minimum selling price (MSP). Moreover, to demonstrate the potential costs saving for the water treatment process, the performance of SAC for the removal of natural organic matter was compared with that of commercial active carbon. SAC was obtained at a minimized KOH amount (1 g/g) and chemicals were successfully recovered with a rate of 5–10% losses. The CAPEX, OPEX and MSP were found to be 4–21 million EUR, 1–9 million EUR/year and 4.4–2.9 kEUR/t for a 0.5–5.0 t/year production capacity, respectively, at a profitability requirement of 20% and a less than 5 year payback period. In addition, SAC demonstrated considerably higher adsorptive capacity for natural organic matter (600–900 mg total organic carbon/g) compared with commercial active carbon (40–50 mg total organic carbon/g), which could lead to substantial process savings. SAC manufacture through this method has been validated and the benefit for the potential application is sufficiently clear to promote the successful commercialization of SAC using lignin wastes. © 2022 The Authors. Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd.

show abstract

“…The abundant oxygen-containing groups in lignin, such as hydroxyl, methoxy, carbonyl, etc., show broad application prospects in terms of designability, adsorption performance, dispersibility and a nity for organic pollutants (Cedap et al, 2020;Zhao et al, 2021). Nevertheless, almost all lignin has been burnt as fuel, which not only wastes resources, but also leads to a large number of greenhouse gas emissions (Ponomarev and Sillanpää, 2019). Therefore, it is a promising alternative to make better use of lignin resources and convert them into lignin-based high-e ciency adsorbents.…”

Section: Introductionmentioning

confidence: 99%

One-pot preparation of magnetic nitrogen-doped porous carbon from lignin for efficient and selective adsorption of organic pollutants

Tian

Yin

Jia

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

E cient and rapid capture of organic pollutants from wastewater is an urgent problem to be solved by adsorbents. Nitrogen-doped magnetic porous carbon (M-PLAC) with three-dimensional porous structure was synthesized from lignin to adsorb MB and TC in wastewater. M-PLAC had high speci c surface area (1252.21 m 2 /g) and N element content (7.44%). The calculated equilibrium adsorption amount by M-PLAC for MB and TC was 645.52 and 1251.09 mg/g, respectively. The adsorption of MB and TC on M-PLAC conformed to the pseudo-second-order kinetic model, demonstrating that the adsorption process was attributed to chemisorption. The excellent adsorption performance was a synergistic effect among various adsorption mechanisms. The removal of MB and TC by M-PLAC showed fast and e cient characteristics, and exhibited high selectivity for TC in binary system. In addition, M-PLAC was suitable for a variety of complex water environments and had good regeneration performance, demonstrating potential advantages in practical wastewater treatment.

show abstract

Combined chemical-templated activation of hydrolytic lignin for producing porous carbon

Cited by 43 publications

References 28 publications

Lignin-Based Magnesium Hydroxide Nanocomposite. Synthesis and Application for the Removal of Potentially Toxic Metals from Aqueous Solution

Lignin-Based Magnesium Hydroxide Nanocomposite. Synthesis and Application for the Removal of Potentially Toxic Metals from Aqueous Solution

Techno‐Economic assessment for superactive carbon production from side stream lignin

One-pot preparation of magnetic nitrogen-doped porous carbon from lignin for efficient and selective adsorption of organic pollutants

Contact Info

Product

Resources

About