Russian Federation
Voronezh State University (Kafedra materialovedeniya i industrii nanosistem, associate professor)
Russian Federation
Russian Federation
The paper shows the possibility of using waste from the wood processing industry and wastewater treatment plants as sorbents. Biochars based on poplar sawdust and sewage sludge were obtained by carbonization at 5000C, the practical yield of the product was established, and alkaline modification was carried out to improve the sorption capacity. The elemental composition of the original biochars and the physicochemical characteristics of the samples before and after modification were determined. It was found that alkaline treatment increases the moisture content, bulk density, and sorption capacity of the samples. The isotherm shapes for two types of coals of different nature have a comparable shape, which indicates the identity of the sorption mechanism.
sewage sludge, poplar wood, sorption, methylene blue dye, biochar
1. Sahu J., Karri R.R., Zabed H.M., Shams S., Qi. X. Current perspectives and future prospects of nano- biotechnology in wastewater treatment // Separation & Purification Reviews. 2021. v.50. p.139-158. DOI:https://doi.org/10.1080/15422119.2019.1630430
2. Khodosova N.A., Tomina E.V., Manukovskaya V.E., Baranova P.E. The influence of the nature of raw materials on the biochars characteristics // BIO Web of Conferences. 2024.145.03004. DOIhttps://doi.org/10.1051/bioconf/202414503004
3. M. Lundin. et al.Environmental and economic assessment of sewage sludge handling options // Resources Conservation and Recycling.2004.v.41 p.255–278
4. Babatunde AO, Zhao YQ. Constructive approaches toward water treatment works sludge management: an international review of beneficial Reuses // Critical Reviews In Environmental Science and Technology. 2007. v.37. p.129–64.
5. Hodosova N.A., Tomina E.V., Manukovskaya V.E., Ischenko T.L. Primenenie biouglya na osnove osadka stochnyh vod v prirodoohrannyh celyah // Materialy mezhdunarodnoy nauchnoy konferencii uchenyh i studentov «energosberegayuschie i ekologicheski chistye tehnologii v lesnoy promyshlennosti». 2024. DOIhttps://doi.org/10.58168/E-SEFTFI2024_203-207
6. Song Cheng, Mingliang Meng, Baolin Xing, Changliang Shi, Yanhe Nie, Daping Xia, Guiyun Yi , Chuanxiang Zhang, Hongying Xia. Preparation of valuable pyrolysis products from poplar waste under different temperatures by pyrolysis: Evaluation of pyrolysis products // Bioresource Technology. 2022. v. 364. p. 128011. DOI:https://doi.org/10.1016/j.biortech.2022.128011
7. A. Kumar, T. Bhattacharya, W. A. Shaikh, S. Chakraborty, D. Sarkar and J. K. Biswas. Biochar Modification methods for augmenting sorption of contaminants // Current Pollution Reports. 2022. t. 8. p. 519–555. DOIhttps://doi.org/10.1007/s40726-022-00238-3
8. Junna Sun, Fuhong He, Yinghua Pan, Zhenhua Zhang. Effects of pyrolysis temperature and residence time on physicochemical properties of different biochar types // Acta Agriculturae Scandinavica, Section B — Soil & Plant Science. 2016. t. 67. v. 1 .p. 12-22. DOIhttps://doi.org/10.1080/09064710.2016.1214745
9. Gherghel A., Teodosiu C., De Gisi S. A review on wastewater sludge valorisation and its challenges in the context of circular economy // Journal of Cleaner Production. 2019. v. 228. p. 244–263. DOI:https://doi.org/10.1016/j.jclepro.2019.04.240
10. Carrot P.J.M., Ribeiro Carrot M.M.L., Mourao P.A.M. Pore size control in activated carbons obtained by pirolysis under different conditions of chemically impregnated corc. // Journal of Analytical and Applied Pyrolysis. 2006. v.73. p. 120-127.
