Banana Peduncle Biochar: Characteristics and Adsorption of Hexavalent Chromium from Aqueous Solution

Karim, Adnan Asad; Kumar, Manish; Mohapatra, Sanghamitra; Panda, C. S.; Singh, Ankit

doi:10.9734/irjpac/2015/16163

Cited by 25 publications

(12 citation statements)

References 29 publications

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“…Studies suggest that biochar is effective for the removal of heavy metals and other contaminants from municipal wastewater as well as from industrial wastewater (X. Han et al, 2013;Inyang et al, 2012Inyang et al, , 2011Jiang et al, 2012;Karim et al, 2015;Kılıç et al, 2013;Li et al, 2013;Liu and Zhang, 2009;Park et al, 2011;Pellera et al, 2012;Pérez-Marín et al, 2007;Regmi et al, 2012;Sun et al, 2011;Tong et al, 2011;Xu et al, 2011Xu et al, , 2013Yao et al, 2011b;P. Zhang et al, 2013;X.…”

Section: Introductionmentioning

confidence: 99%

Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis

Alhashimi

Aktaş

2017

Resources, Conservation and Recycling

392

100

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As the commercial production and distribution of biochar continues to grow internationally, and its applications diversifying from its early uses as soil amendment, it is important to study the environmental impacts and economic performance of biochar in comparison to activated carbon in order to assess its value. The goal of the study was to assess, through a meta-analysis, the environmental and economic performance of biochar in comparison to activated carbon under an equivalent functional unit to adsorb heavy metals. More than 80 data points on adsorption capacity of biochar and activated carbon were identified through literature, which were statistically analyzed as part of the study. Biochar was found to have lower energy demand and global warming potential impact than activated carbon, where average energy demands were calculated as 6.1 MJ/kg and 97 MJ/kg and average greenhouse gas emissions calculated as-0.9 kg CO 2 eq/kg and 6.6 kg CO 2 eq/kg for biochar and activated carbon, respectively. When adsorption of heavy metals were used as the functional unit during analysis, results indicate that there is typically an order of magnitude difference between the two materials, where biochar was found to have lower environmental 1 10 100 1000 10000 Cadmium Copper Zinc Lead Chromium Adsorption cost, US $/kg contaminant Biochar Activated carbon 2 impacts. The environmental impact resulting from long distance transportation of biochar would not overturn this conclusion. The adsorption cost of biochar was lower than activated carbon to remove chromium and zinc with a 95% confidence. Adsorption cost for lead and copper were found to be comparable, and therefore the specific type of biochar and its price could shift results both ways. There is evidence that biochar, if engineered correctly for the task, could be at least as effective as activated carbon and at a lower cost.

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Section: Introductionmentioning

confidence: 99%

Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis

Alhashimi

Aktaş

2017

Resources, Conservation and Recycling

392

100

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“…Langmuir and Freundlich isotherm models expound the formation of monolayer and multilayered structure respectively [17]. Langmuir isotherm [18] is represented by the following equation (2).…”

Section: Isotherm Studymentioning

confidence: 99%

Exploring the Potential of Biochar Activated with Phosphoric Acid towards Hexavalent Chromium Removal

Kalaiarasi

Parameswari

Davamani

2020

IRJPAC

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The biochar derived from the dreadful weed water hyacinth (Eichhornia crassipes) was activated with phosphoric acid was utilized for adsorption of hexavalent chromium (Cr (VI)) from the simulated solution. The characterization (Zeta potential, specific surface area, Scanning Electron Microscope analysis) of biochar was done to study the surface properties of the biochar. The modified biochar (379 m2g-1) recorded 49.80% greater surface area in comparison to the pristine biochar (253 m2g-1). Zeta potential of modified biochar is 4.2 mV and pristine biochar is -13.9 mV. Positively charged modified surface enhance the sorption of negatively charged Cr (VI) ions. Study on effect of pH and concentration revealed that maximum sorption occurred at pH 2 and the increasing trend of concentration resulted in the decreased sorption respectively. The isotherm study was well supported by Langmuir isotherm (R2 value=0.976) defining the monolayer adsorption. Maximum adsorption capacity was recorded for phosphoric acid modified biochar (50.0 mg g-1) than the pristine biochar (35.7 mg g-1). Pseudo second order kinetics (R2 value=0.998) sounds good in explaining the rate of reaction. The findings reflect the utility of acid modified Eichhornia crassipes for heavy metal removal from aqueous medium.

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“…O aumento da temperatura de pirólise pouco alterou os valores do pH dos biocarvões de BBL e não houve alteração no BCB. Valores semelhantes foram encontrados em outras pesquisas, 37 cujos valores de pH de biocarvões de casca de banana carbonizados a 300 e 500°C apresentaram valores de pH entre 8 e 10; neste estudo, houve um aumento dos valores com aumento da temperatura. [38][39][40][41] Os elevados valores de pH são devidos provavelmente a presença nas cinzas de carbonatos, sais alcalinos e cátions básicos nos biocarvões.…”

Section: -Ph E Condutividade Elétrica (Ce)unclassified

Characterization of Biochar Samples of Banana Peels and Orange Bagasse Carbonized at 400 and 600°C

Feitosa¹,

Teixeira²,

Ritter³

et al. 2020

Rev. Virtual Quim.

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Biochar is a product of the pyrolysis of organic waste with potential use in agriculture. Its use depends on its physico-chemical properties, which vary according to the biomass and the pyrolysis process. Agroindustry that processing oranges and bananas generate a large amount of residues. We produced biochars from banana peels and orange bagasse with pyrolysis at 400 and 600°C. The results showed a variation of properties as a function of the biomass and the pyrolysis temperature. All biochars showed alkaline pH. The banana peels biochars present high ash values and electrical conductivity. The carbon contents varies between 50-60%. The Cu contents limited the agricultural use, as well as the naphthalene content in the bagasse orange biochar at 600°C. Further studies on agronomic advantages and risks of the use of these biochars in tropical soils are needed. O biocarvão é um produto da pirólise de resíduos orgânicos com potencial uso na agricultura. A utilização depende de suas propriedades físico-químicas, que variam de acordo com a biomassa e o processo de pirólise utilizado. As agroindústrias de processamento de laranjas e bananas geram uma grande quantidade de resíduos. Foi produzido em reator biocarvão de cascas de banana e bagaços de laranja com nas temperaturas de 400°C e 600°C. Os resultados mostraram variação das características em função da biomassa e da temperatura de pirólise. Todos os biocarvões mostraram pH alcalino. Os biocarvões de casca de banana apresentam elevados valores de cinzas e condutividade elétrica. Os teores de carbono variaram 50-60%. Os teores de Cu limitam o uso agrícola, assim como o teor de naftaleno no biocarvão de bagaço de laranja carbonizado a 600°C. São necessários estudos complementares sobre vantagens agronômicas e riscos da utilização deste biocarvões nos solos tropicais.

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Banana Peduncle Biochar: Characteristics and Adsorption of Hexavalent Chromium from Aqueous Solution

Cited by 25 publications

References 29 publications

Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis

Life cycle environmental and economic performance of biochar compared with activated carbon: A meta-analysis

Exploring the Potential of Biochar Activated with Phosphoric Acid towards Hexavalent Chromium Removal

Characterization of Biochar Samples of Banana Peels and Orange Bagasse Carbonized at 400 and 600°C

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