Adsorption of hexavalent chromium from aqueous solution by modified corn stalk: A fixed-bed column study

Chen, Suhong; Yue, Qinyan; Li, Qian; Fu, Kang

doi:10.1016/j.biortech.2011.11.110

Cited by 456 publications

(209 citation statements)

References 34 publications

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“…According to Table 2, as flow rate increased from 4.5 to 7.5 ml/min, the value of the total mass of CFX adsorbed dropped from 81.9 to 47.3 mg/g. The results are entirely in agreement with the results of other studies given elsewhere [21,22]. …”

Section: Batch Studysupporting

confidence: 93%

“…Despite this, the maximum capacity q eq of CFX on the walnut shell AC adsorption sites was low because not all the surface walnut shell AC were accessible to CFX molecules [25]. Accordingly, a relatively low mass of the adsorbent was beneficial to antibiotics adsorption, which agrees with the result obtained by Chen et al [21].…”

Section: Fixed-bed Breakthrough Curves At Different Mass Of the Adsorsupporting

confidence: 88%

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Fixed-Bed Adsorption of Cephalexin Onto Walnut Shell-Based Activated Carbon

Nazari¹,

Abolghasemi²,

Esmaieli³

2017

ChChT

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Section: Batch Studysupporting

confidence: 93%

Section: Fixed-bed Breakthrough Curves At Different Mass Of the Adsorsupporting

confidence: 88%

Fixed-Bed Adsorption of Cephalexin Onto Walnut Shell-Based Activated Carbon

Nazari¹,

Abolghasemi²,

Esmaieli³

2017

ChChT

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“…Relationship between the contact time and removal efficiency of phosphate ions is shown in Figure 3b at a constant bed depth (2 cm and 2.5 cm). It is demonstrated that as time increases, concentration of effluent decreases, and removal efficiency increases [14]. This may be due to the increase in surface area, which provides more binding sites for column adsorption [11].…”

Section: Effect Of Bed Depth On % Removal Efficiency Of Phosphorusmentioning

confidence: 99%

“…Total amount of metal ion entering column (m total ) is calculated using the following equation: m total =C 0 Qt total /1000 [14] eq. 4…”

Section: Breakthrough Curvesmentioning

confidence: 99%

Eco-friendly and Cost-effective Use of Rice Straw in the Form of Fixed Bed Column to Remove Water Pollutants

Singh¹,

Thakur²

2016

J Bioremediat Biodegrad

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We investigated the removal of three pollutants: methylene blue (MB), phosphorus, and nickel (Ni [II]) from water by using modified rice straw powder (RSP) and fixed-bed column adsorption technique. The experiments were conducted in single and binary solutions to study the effects of initial pollutant concentration and column bed depth on adsorption. It was observed that the maximum adsorption capacity of RSP for MB, phosphorus, and Ni (II) was 21.99, 4.22, and 4 mg/g, respectively. In the MB-phosphorus binary solution, the presence of one pollutant did not affect the adsorption of other pollutants. In the Ni (II)-MB binary solution, exhaustion time significantly decreased for Ni (II) adsorption; however, it increased for MB adsorption. The adsorption mechanism was analysed by using the Adams-Bohart, Thomas, and Yoon and Nelson models for describing the column's dynamic behaviour. The results indicated that the Thomas model was very suitable for RSP column design.

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“…Cr(VI) can be present as chromate (CrO 4 2− ), hydrogen chromate (HCrO 4 − ) or dichromate (Cr 2 O 7 2− ) in aqueous solutions [2]. Cr(VI) is known to be carcinogenic and mutagenic and it is also reported to pose skin ulceration, nausea, liver damage, and pulmonary congestion, vomiting, and severe diarrhea [1], [6]. These facts make it necessary to restrict Cr(VI) from entering wastewaters and finally the aquatic sources.…”

mentioning

confidence: 99%