Characterization of cadmium removal from aqueous solution by biochar produced from Ipomoea fistulosa at different pyrolytic temperatures

Goswami, Ritusmita; Shim, Jaesool; Deka, Shantanu; Kumari, Deepa; Kataki, Rupam; Kumar, Manish

doi:10.1016/j.ecoleng.2016.10.007

Cited by 140 publications

(33 citation statements)

References 36 publications

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“… studied the competitive sorption of heavy metals (Pb, Cd, Cr, Cu and Zn) on sesame straw biochar (SSB), Goswami et al . found Ipomoea fistulosa biochar a potential adsorbent for cadmium removal form aqueous solution. Dong et al .…”

Section: Introductionmentioning

confidence: 97%

“…Various works have been published related to treatment of waste water using biochar. Kilic et al [21] used biochar produced from almond shell for Ni(II) and CO(II) removal, Park et al [22] studied the competitive sorption of heavy metals (Pb, Cd, Cr, Cu and Zn) on sesame straw biochar (SSB), Goswami et al [23] found Ipomoea fistulosa biochar a potential adsorbent for cadmium removal form aqueous solution. Dong et al [24] and Kahraman and Pehlivan [25] used sugar beet tailing biochar and Olester seed biochar, respectively, for Cr(VI) removal from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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Pyrolysis of chemically treated corncob for biochar production and its application in Cr(VI) removal

Gupta

Ram

Bala

et al. 2017

Env Prog and Sustain Energy

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In this study, corncob was used as raw material for biochar production. Slow pyrolysis of corncob was done at different temperatures (400–600°C) with a constant heating rate of 16°C/min in a quartz reactor with the aim to produce biochar. The physicochemical treatment of corncob was done to make it suitable for pyrolysis. Chemical treatment was done at different o‐phosphoric acid to corncob ratio (PA/CC) of 0.5, 1.0 and 1.2 for improvement of quality and yield of produced biochar. With increasing temperature biochar yield decreased but pretreatment showed an increase in the yield. Biochar yield was found optimum at PA/CC of 1.0. The FTIR, SEM, TGA and XRF analysis of corncob and biochar were done to see the changes before and after pyrolysis. Presence of different inorganic elements along with lesser H/C and O/C ratios makes biochar as additive for soil amendment. Also lesser H/C and O/C ratios and HHV of 19.97 MJ/kg confirms biochar suitable as solid fuel. Further application of biochar was examined for Cr(VI) removal from aqueous solution as innovative adsorbent in batch process with varying parameters such as pH, initial concentration of Cr(VI) solution, contact time and adsorbent dose. Maximum removal of Cr(VI) was found to be 93% at pH 2.01, initial Cr(VI) concentration 50 mg/L, adsorbent dose 10 g/L and equilibrium time of 90 min. Langmuir isotherm showed a better fitting model and maximum adsorption capacity was 25.69 mg/g. Biochar showed good repeatability by reusing it twice as adsorbent for Cr(VI) removal. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1606–1617, 2018

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Pyrolysis of chemically treated corncob for biochar production and its application in Cr(VI) removal

Gupta

Ram

Bala

et al. 2017

Env Prog and Sustain Energy

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“…While pre-pyrolysis modifications involve the treatment of feedstock, post-pyrolysis modifications are more common and involve the treatment of biochars. After chemical modification, the functional groups, micropores as well as surface area and cation exchange capacity (CEC) of biochars can be improved, thereby leading to an enhanced sorption capacity to various pollutants (Goswami et al 2016;Xue et al 2012;Zhang et al 2013). Physical modification alters their particular size and pore structure, and offers advantages over chemical modification since this modification is clean and easy to control with low cost (Shim et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Environmental behavior of engineered biochars and their aging processes in soil

Duan

Oleszczuk

Pan

et al. 2019

Biochar

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In recent years, due to the broad application of biochars, the preparation, environmental behavior and aging processes of biochars have attracted wide attention globally, especially the modification of biochars. However, most of the studies only consider the improvement of biochar properties right after the modification, but neglect a complete evaluation of the longterm stability and eco-toxicity of these newly developed materials after entering the environment. With the development and utilization of biochars, engineered biochars (EngBCs) will soon enter the market, but its environmental risk still remains unclear. The literature does not provide adequate information on how aging of EngBCs will affect their properties, and indirectly impact the properties of soils (cycle of elements and organic matter). Therefore, this review paper summarizes the aging process and environmental risk of biochars, aiming at better understanding the interactions between EngBCs and soil components or pollutants. More importantly, this review is to point out the contradictory speculations of environmental behavior of EngBCs studied at the present stage. Due to the modification, the EngBCs stability may be significantly reduced. However, the formation of functional group on EngBCs will enhance their interaction with soil minerals to form biocharsmineral complex, and thus EngBCs could be protected. The impacts of EngBCs after entering the environment are also ambiguous. Therefore, understanding EngBCs environmental behavior is critical, which is helpful to reduce the potential risk and to produce EngBCs following the rule of sustainable development and safety to the environment.

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“…25,26 XRD is a widely used technique for analyzing the crystallinity of biomass and the structure of biochar. 27 The XRD patterns of the CMB samples obtained at different pyrolytic temperatures in the 2q values of 10-90 are shown in Fig. 1b.…”

Section: Structural Characterization Of Cmbmentioning

confidence: 99%

“…The pore diameter broadened with increasing pyrolytic temperature, which suggests that surface thermal decomposition gradually strengthened the CMB samples during pyrolysis, probably due to the organic matter decomposition of the biochar. The internal release of volatile gas and the formation of channel structures during pyrolysis have been reported to broaden the pore diameter, 27 which could facilitate the adsorption of heavy metal ions. Fig.…”

Section: 4mentioning

confidence: 99%

Effect of different pyrolysis temperatures on physico-chemical characteristics and lead(ii) removal of biochar derived from chicken manure

et al. 2020

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Characterization of cadmium removal from aqueous solution by biochar produced from Ipomoea fistulosa at different pyrolytic temperatures

Cited by 140 publications

References 36 publications

Pyrolysis of chemically treated corncob for biochar production and its application in Cr(VI) removal

Pyrolysis of chemically treated corncob for biochar production and its application in Cr(VI) removal

Environmental behavior of engineered biochars and their aging processes in soil

Effect of different pyrolysis temperatures on physico-chemical characteristics and lead(ii) removal of biochar derived from chicken manure

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