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Membrane Water Treatment Volume 14, Number 4, July 2023 , pages 163-173 DOI: https://doi.org/10.12989/mwt.2023.14.4.163 |
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Adsorption process efficiency of activated carbon from date pits in removing pollutants from dye wastewater |
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A. Ahsan, I.K. Erabee, F.B. Nazrul, M. Imteaz, M.M. El-Sergany, S. Shams and Md. Shafiquzzaman
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| Abstract | ||
| The presence of high amounts of organic and inorganic contaminants in textile wastewater is a major environmental concern. Therefore, the treatment of textile wastewater is an urgent issue to save the aquatic environment. The disposal of large quantities of untreated textile wastewater into inland water bodies can cause serious water pollution. In this study, synthetic dye wastewater samples were prepared using orange dye in the laboratory. The synthetic samples were then treated by a batch adsorption process using the prepared activated carbon (AC) from date pits. The wastewater parameters studied were the pH, total dissolved solids (TDS), total suspended solids (TSS), electrical conductivity (EC) and salinity. The activated adsorption process showed that the maximum removal efficiencies of electric conductivity (EC), salinity, TDS and TSS were 65%, 92%, 89% and 90%, respectively. The removal efficiencies were proportional to the increase in contact time (30-120 min) and AC adsorbent dose (1, 3 and 5 g/L). The adsorption profile indicates that 5 g/L of adsorbent delivers better results for TDS, EC, TSS and salinity at contact time of 120 min. The adsorption characteristics are better suited to the pseudo-second-order kinetic model than to the pseudo-first-order kinetic model. The Langmuir and Freundlich isotherms were well suited for describing the adsorption or contact behavior of EC and TSS within the studied system. | ||
| Key Words | ||
| activated carbon (AC); adsorption; dye; isotherms; kinetic model; textile wastewater | ||
| Address | ||
| A. Ahsan: Department of Civil and Environmental Engineering, Islamic University of Technology, Gazipur 1704, Bangladesh/ Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, Australia I.K. Erabee: Department of Civil Engineering, College of Engineering, University of Thi-Qar, Iraq F.B. Nazrul: Department of Civil and Environmental Engineering, Islamic University of Technology, Gazipur 1704, Bangladesh M. Imteaz: Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, Australia M.M. El-Sergany: School of Health and Environmental Studies, Hamdan Bin Mohammed Smart University, Dubai 71400, UAE S. Shams: Civil Engineering Programme Area, Universiti Teknologi Brunei, Jalan Tungku Link, Gadong BE1410, Brunei Darussalam Md. Shafiquzzaman: Department of Civil Engineering, College of Engineering, Qassim University, Buraidah 51452, Saudi Arabia | ||
