<span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman";mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:FA" lang="EN-US">Adsorption potential of NH₄Br-soaked activated carbon for cyanide removal from wastewater</span>

183-193An adsorbent has been prepared <span style="mso-fareast-font-family: Calibri" lang="EN-GB">from Populus alba using the <span style="mso-fareast-font-family: Calibri" lang="EN-GB">NH4Br-soaked activated carbon (NBAC) for cyanide removal. <span style="mso-fareast-font-family: Calibri" lang="EN-GB">A series of tests have been conducted to evaluate the influence of the main parameters such as the wastewater pH, reaction time, cyanide concentration, and the <span style="mso-fareast-font-family: Calibri" lang="EN-GB">NBAC quantity obtained upon the adsorption of cyanide onto NBAC. At an optimum pH of 9, more than 97% of the 200 mg/L cyanide is removed by a low NBAC dose of 1.25 mg/L during a 40 min contact time. Kinetic and isotherm modeling studies demonstrate that the experimental data best fit a pseudo-second order and Langmuir model, respectively. The maximum Langmuir adsorption capacity has been attained 102.5 mg/g at 24°C. Thermodynamic study of cyanide adsorption by <span style="mso-fareast-font-family: Calibri" lang="EN-GB">NBAC has also been carried out. The efficacy of NBCA has been examined by analyzing the removal of cyanide from an industrial wastewater. Overall, <span style="mso-fareast-font-family: Calibri" lang="EN-GB">NBAC is an efficient and low-cost adsorbent for the removal of different concentrations of cyanide from wastewaters.