Continuous fixed bed adsorption of ammonium ion on carbon black modified with sodium dodecylbenzene sulfonate beads

IF 4.3 2区工程技术 Q2 ENGINEERING, CHEMICAL Chemical Engineering Science Pub Date : 2025-06-01 Epub Date: 2025-03-22 DOI:10.1016/j.ces.2025.121571

Nurul Balqis Mohamed , Norzita Ngadi , Ahmad Ilyas Rushdan , Ya Mohammad Nazir Syah Ismail

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Abstract

This study demonstrates the high efficiency of sodium dodecylbenzene sulfonate-modified carbon black (CBp-SDBS) beads for ammonium (NH₄⁺) removal in a continuous fixed-bed column system. The beads achieved a maximum adsorption capacity of 87.15 mg/g, surpassing conventional adsorbents. Increasing bed length (9 cm) and decreasing influent concentration (0.2 mmol/L) significantly enhanced adsorption efficiency, while higher flow rates (5 mL/s) reduced contact time, lowering removal efficiency. The Thomas and Yoon-Nelson models accurately predicted adsorption behavior, confirming their suitability for column design. Regeneration studies showed CBp-SDBS beads retained adsorption efficiency over five cycles, with NaCl demonstrating superior desorption performance compared to distilled water. These findings highlight CBp-SDBS beads as a cost-effective and sustainable alternative for ammonium removal, contributing to wastewater treatment and circular economy applications.

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十二烷基苯磺酸钠改性炭黑连续固定床吸附铵离子的研究

本研究证明了十二烷基苯磺酸钠改性炭黑（CBp-SDBS）微球在连续固定床柱系统中对铵（NH4+）的高效去除。该微球的最大吸附容量为87.15 mg/g，优于传统吸附剂。增加床长（9 cm）和降低进水浓度（0.2 mmol/L）可显著提高吸附效率，而增大流量（5 mL/s）可缩短接触时间，降低去除效率。Thomas和Yoon-Nelson模型准确地预测了吸附行为，证实了它们在色谱柱设计中的适用性。再生研究表明，CBp-SDBS微珠在5个循环中保持了吸附效率，与蒸馏水相比，NaCl的脱附性能更好。这些发现强调了CBp-SDBS珠作为一种具有成本效益和可持续的氨去除替代品，有助于废水处理和循环经济应用。

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来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.