Assessment of Remediation of MunicipalWastewater Using Activated Carbon Produced from Sewage Sludge

This study evaluates the potential to synthesize an adsorbent for wastewater remediation applications from an anaerobic digestion by-product synthesized using biomaterials and a less energyintensive process. The synthesized sludge-based granular activated carbon (GAC) was used to adsorb Cr(VI) and Cd(II) in a batch reactor stirred for 24 h at 25 degrees C. The surface chemistry of the material was assessed porosity with BET, SEM for morphology, EDS-XRF for elemental analysis, and functional groups on these materials using FTIR and TGA for thermal profile. SBET of the SAC was discovered to be 481.370 m(2)/g with a VT of 0.337 cm(3)/g, respectively 9.02 and 2.23 times greater than raw sludge. The modification to SAC shows a dramatic increase in performance from 40% to 98.9% equilibrium adsorption rate. The maximum or equilibrium removal (99.99%) of Cr(VI) and Cd(II) was achieved by 0.8 and 1.4 g SAC dosage, respectively. Thus, it can be concluded that activation of sewage sludge was effective in enhancing the surface area and pore volume which made it suitable for AMD remediation application.

Automated summary

This study evaluates the synthesis of sludge-based granular activated carbon (GAC) for wastewater remediation by utilizing biomaterials and a less energy-intensive process. The modified GAC showed a significant increase in adsorption performance for Cr(VI) and Cd(II), with an equilibrium adsorption rate reaching 98.9%. The maximum removal of Cr(VI) and Cd(II) (99.99%) was achieved at 0.8 and 1.4 g SAC dosage, respectively. The activation of sewage sludge effectively enhanced the surface area and pore volume, making it suitable for AMD remediation application.