Knowledge Agora



Similar Articles

Title High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge
ID_Doc 7354
Authors Ho, SH; Chen, YD; Yang, ZK; Nagarajan, D; Chang, JS; Ren, NQ
Title High-efficiency removal of lead from wastewater by biochar derived from anaerobic digestion sludge
Year 2017
Published
Abstract The properties of biochar derived from waste activated sludge and anaerobic digestion sludge under pyrolysis temperature varying from 400 degrees C to 800 degrees C were investigated. The heavy metals adsorption efficiency of the sludge-derived biochar was also examined. Among the biochar samples tested, ADSBC600 possessing highly porous structure, special surface chemical behaviors and high thermal stability was found to remove Pb2+ from aqueous solutions efficiently with an adsorption capacity of 51.20 mg/g. The Pb2+ adsorption kinetics and isotherm for ADSBC600 can be described using the pseudo second-order model and Langmuir isotherm, respectively. Analysis of the characteristics of biochar before and after metal treatment suggests that electrostatic attraction, precipitation, surface complexation and ion exchange are the possible Pb2+ removal mechanisms. This study demonstrates a successful example of waste refinery by converting anaerobic digestion sludge to feasible heavy metal adsorbents to implement the concept of circular economy.
PDF

Similar Articles

ID Score Article
28814 Pap, S; Boyd, KG; Taggart, MA; Sekulic, MT Circular economy based landfill leachate treatment with sulphur-doped microporous biochar(2021)
6368 Hu, JW; Zhao, L; Luo, JM; Gong, HB; Zhu, NW A sustainable reuse strategy of converting waste activated sludge into biochar for contaminants removal from water: Modifications, applications and perspectives(2022)
24478 Biswal, BK; Balasubramanian, R Use of biochar as a low-cost adsorbent for removal of heavy metals from water and wastewater: A review(2023)Journal Of Environmental Chemical Engineering, 11, 5
13773 Nardis, BO; Franca, JR; Carneiro, JSD; Soares, JR; Guilherme, LRG; Silva, CA; Melo, LCA Production of engineered-biochar under different pyrolysis conditions for phosphorus removal from aqueous solution(2022)
30025 Gopinath, A; Divyapriya, G; Srivastava, V; Laiju, AR; Nidheesh, P; Kumar, MS Conversion of sewage sludge into biochar: A potential resource in water and wastewater treatment(2021)
5579 Jellali, S; Khiari, B; Al-Harrasi, M; Charabi, Y; Al-Sabahi, J; Al-Abri, M; Usman, M; Al-Raeesi, A; Jeguirim, M Industrial sludge conversion into biochar and reuse in the context of circular economy: Impact of pre-modification processes on pharmaceuticals removal from aqueous solutions(2023)
13509 Mayilswamy, N; Nighojkar, A; Edirisinghe, M; Sundaram, S; Kandasubramanian, B Sludge-derived biochar: Physicochemical characteristics for environmental remediation(2023)Applied Physics Reviews, 10, 3
26585 Harripersadth, C; Musonge, P The Dynamic Behaviour of a Binary Adsorbent in a Fixed Bed Column for the Removal of Pb2+ Ions from Contaminated Water Bodies(2022)Sustainability, 14, 13
14799 Medeiros, DCCD; Chelme-Ayala, P; El-Din, MG Sludge-based activated biochar for adsorption treatment of real oil sands process water: Selectivity of naphthenic acids, reusability of spent biochar, leaching potential, and acute toxicity removal(2023)
21118 Viotti, P; Marzeddu, S; Antonucci, A; Decima, MA; Lovascio, P; Tatti, F; Boni, MR Biochar as Alternative Material for Heavy Metal Adsorption from Groundwaters: Lab-Scale (Column) Experiment Review(2024)Materials, 17.0, 4
Scroll