Feasibility analysis of color removal from textile dyeing wastewater in a fixed-bed column system by surfactant-modified zeolite (SMZ)

Özdemir, Özgür; Turan, Mustafa; Turan, Abdullah Zahid; Fakı, Ayşegül; Engin, A. Baki

doi:10.1016/j.jhazmat.2008.11.123

Cited by 89 publications

(43 citation statements)

References 38 publications

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“…At higher flow rates the lead ions did not have enough time to diffuse into the pores of the red mud and they exited the column before equilibrium occurred. Similar results have been found for As (III) removal in a fixed-bed system using modified calcined bauxite and for color removal in a fixed-bed column system using surfactant-modified zeolite [29,30].…”

Section: Column Adsorption Experiments 321 Effect Of Flow Ratesupporting

confidence: 84%

“…The temperature of the suspension was maintained at 20 ±1 ° C. The initial pH of the solution was adjusted to the value 7.5 by adding NH 3 and HCl. Samples were taken after mixing the adsorbent and Pb 2+ ion bearing solution at pre determined time intervals (5,10,20,30,60, and 120 min) for the measurement of residual metal ion concentration in the solution and to ensure equilibrium was reached. After specified time the sorbents were separated from the solution by centrifuge and filtration through the filter paper (Whatman grade6).…”

Section: Experimental 21 Preparation Of Adsorbentmentioning

confidence: 99%

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Research on the Batch and Fixed-Bed Column Performance of Red Mud Adsorbents for Lead Removal

2014

Can Chem Trans

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Abstract:The removal of lead from water by red mud using batch and fixed-bed column adsorption techniques was investigated. In a batch study, experiments indicated that the time to attain equilibrium was 2h. The experimental data fitted well to a Langmuir adsorption isotherm and the adsorption capacity was 18.87 mg/g. Fixed-bed column experiments were carried out for different influent lead concentrations, bed depths, and various flow rates. The breakthrough time and exhaustion time decreased with increasing flow rate, decreasing bed depth and increasing influent lead concentration. The bed depth service time model and the Thomas model were applied to the experimental results. Both model predictions were in good agreement with the experimental data for all the process parameters studied, indicating that the models were suitable for red mud fix-bed column design.

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Section: Column Adsorption Experiments 321 Effect Of Flow Ratesupporting

confidence: 84%

Section: Experimental 21 Preparation Of Adsorbentmentioning

confidence: 99%

Research on the Batch and Fixed-Bed Column Performance of Red Mud Adsorbents for Lead Removal

2014

Can Chem Trans

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“…The system uses the Microsoft SQL Server database management system as its back-end database and C# as its development language. The above computer software can be developed and run on all operating systems like Windows XP, Window 7 and Window 10, and the requirements of hardware are also low [14], so the computer hardware facilities in normal colleges and universities and students' PCs can meet the operating requirements.…”

Section: System Feasibility Analysismentioning

confidence: 99%

English Learning System Design for College Students Personalized English Grammar Check and Diagnosis

Dan-dan

Zhou

2018

Int. J. Emerg. Technol. Learn.

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Abstract-The development of computer technologies help enrich the content of English education and provide more convenience for English learning. English grammar is one of the basic elements and affects the expression and reception in English listening, speaking, reading and writing directly. How a student masters English grammar has a critical impact on his or her overall English level. This paper attempts to achieve personalized check and diagnosis of college students' English grammar. by integrating relevant computer theories and learning theories. With the help of Visual Studio and SQL computer technology, we can achieve functional design and database design for personalized grammar check and diagnosis for both learning and teaching. The paper also completes the design of the question bank, learning feature database and user feature database Computer-technology-based personalized English grammar check and diagnosis system for college students designed and implemented in this paper can help students grasp English grammatical rules better, improve their grammar test and application abilities and increase their interest in English learning, thus, it has a certain practical value in the college English grammar teaching and learning.

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“…The presence of OH -ions as the pH increases contributes to dissolution of metal ions and precipitation was observed begin at pH more than 6 (Gaikwad, 2004). Apart from that, the negatively charge clinoptilolite exists in the CSAC/Cl composite adsorbent which embody some exchangeable cations allowed the dissolution of Pb 2+ in adsorbate being neutralized by the presence of H + (Ozdemir et al, 2009). Lower adsorption of color and Pb at acidid condition was due to the comptetitiveness adsorption between H+ ions and cations.…”

Section: Effect Of Ph Solutionmentioning

confidence: 99%

Preparation and Characterization of Composite Embedded Clinoptilolite for the Removal of Color and Lead from Textile Waste Water

Kamaruddin¹,

Yusoff

Aziz³

et al. 2013

IJSRIN

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Abstract.A new composite adsorbent synthesized from coconut shell activated carbon (CSAC) and clinoptilolite (Cl) for the removal of color and heavy metals from real textile waste water was investigated. OPC as the binder agent held the advantages of CSAC and CL which improved the adsorption capacities of color and lead (Pb). The prepared composite adsorbent with interfacial pores show better mass transfer activity proven by its mechanical properties and stability. The surface area of the CSAC/Cl composite adsorbent was observed at 39.32 m 2 /g having pore diameter of 3.38 nm which in the mesoporous class. The equilibrium data was best fitted to Langmuir. Meanwhile, the kinetics model of pseudo-second-order was favorable with high correlation coefficient more than 0.98 for both color and Pb adsorption. The characterization of the CSAC/Cl composite adsorbent indicates that the presence of SiO 2 (clinoptilolite) in the mixtures influenced the adsorption properties and chemical functional group whereas OPC played a significant role in strength development of the adsorbent. The abstract should be informative and completely self-explanatory, briefly present the topic, state the scope of the experiments, indicate significant data, and point out major findings and conclusions.

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Feasibility analysis of color removal from textile dyeing wastewater in a fixed-bed column system by surfactant-modified zeolite (SMZ)

Cited by 89 publications

References 38 publications

Research on the Batch and Fixed-Bed Column Performance of Red Mud Adsorbents for Lead Removal

Research on the Batch and Fixed-Bed Column Performance of Red Mud Adsorbents for Lead Removal

English Learning System Design for College Students Personalized English Grammar Check and Diagnosis

Preparation and Characterization of Composite Embedded Clinoptilolite for the Removal of Color and Lead from Textile Waste Water

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