English
Русский 77-85 p.
The coagulation treatment method is widely used for the effluents of various origins treatment. Substances-coagulants disrupt colloidal formations and contribute to the small particles aggregation, which leads to their precipitation and, as a consequence, a decrease in the organic substances content and the solution turbidity. The most widely used for this purpose are coagulants based on iron and aluminum. The Hermetia illucens insect is increasingly used to obtain chemical raw materials and valuable feed products for the poultry and fish cultivation. Production processes generate effluents contaminated with biodegradable substances, including components of larval fat. In this work, it was studied the coagulation purification possibility of fat-containing effluents from the production of lipid concentrate from the Hermetia illucens fly larvae by a coagulating suspension obtained from the electric arc steel-making furnaces dust, together with a co-coagulant – chestnut leaves carbonized at 400° C, which were used to increase the number of coagulation centers in the system.
The use of a coagulating suspension in the purification of model emulsions gives a low clarification effect (49% with the addition of 0.2 cm3 per 100 cm3 of the emulsion). It was found that the addition of finely dispersed carbon-ized leaves can significantly increase the cleaning efficiency. The best result was obtained by adding the carbonized chestnut leaves in an amount of 0.3 g together with 0.2 cm3 of suspension per 100 cm3 of liquid, while the clarification efficiency of the lipid concentrate model emulsion was 98%, at a pH of 8.
The main stage of coagulation occurs in the first 40 minutes of interaction, after which no changes are observed in the state of the system under study.
The use of a coagulating suspension in the purification of model emulsions gives a low clarification effect (49% with the addition of 0.2 cm3 per 100 cm3 of the emulsion). It was found that the addition of finely dispersed carbon-ized leaves can significantly increase the cleaning efficiency. The best result was obtained by adding the carbonized chestnut leaves in an amount of 0.3 g together with 0.2 cm3 of suspension per 100 cm3 of liquid, while the clarification efficiency of the lipid concentrate model emulsion was 98%, at a pH of 8.
The main stage of coagulation occurs in the first 40 minutes of interaction, after which no changes are observed in the state of the system under study.
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13. Muller A., Wolf D., Gutzeit H.O., Naturforsch Z. The black soldier fly, Hermetia illucens – a promis-ing source for sustainable production of proteins, lipids and bioactive substances. 2017. Vol. 72. Is. 9-10. P. 351 – 363.
14. Surendra K.C. et al. Bioconversion of organic wastes into biodiesel and animal feed via insect farming. Re-newable energy. 2016. Vol. 98. P. 197 – 202.
15. Svergusova S.V., Sapronova Z.A., Svyatchenko A.V., Fomina E.V., Rymarov A.G. Iron-containing modeled waste as raw material for coagulant receiving. IOP Conference Series: Earth and Environmental Science. 2019. P. 032007.
16. Bojkova T.E. Primenenie metodov koagulyacii v vodopodgotovke na cellyulozno-bumazhnyh predpriyati-yah: dis. … kand. tekhn. nauk. Arhangel'sk, 2019. 135 s.
2. Lin J., Couperthwaite S.J., Millar G. J. Applicability of iron based coagulants for pre-treatment of coal seam water. Journal of Environmental Chemical Engineering. 2017. № 5. P. 1119 – 1132.
3. Yee Shak K.P., Ta Yeong Wu. Optimized use of alum together with unmodified Cassia obtusifolia seed gum as a coagulant aid in treatment of palm oil mill effluent under natural pH of wastewater. Industrial Crops and Prod-ucts. 2015. № 76. P. 1169 – 1178.
4. Vuppala S., Bavasso I., Stoller M., Di Palma L., Vilardi G. Olive mill wastewater integrated purification through pre-treatments using coagulants and biological methods: Experimental, modelling and scaleup. Journal of Cleaner Production. 2019. № 236 (117622). 11 p.
5. Domingues E., Fernandes E., Gomes J., Castro-Silva S., Martins R. C.. Olive oil extraction industry wastewater treatment by coagulation and Fenton’s process. Journal of Water Process Engineering. 2021. № 39 (101818). 8 r.
6. Jagaba A.H., Kutty S.R.M., Hayder G. [et al]. Sustainable use of natural and chemical coagulants for contam-inants removal from palm oil mill effluent: A comparative analysis. Ain Shams Engineering Journal. 2020. № 11. P. 951 – 960.
7. Svyatchenko A.V., Chetverikov A.V., Sapronova ZH.A., SHajhiev I.G. Issledovanie processa ochist-ki maslosoderzhashchej emul'sii s pomoshch'yu metoda planirovaniya eksperimenta. Chemical Bulletin. 2018. T. 1. № 4. S. 19 – 30.
8. Zahrim A.Y., Dexter Z.D., Joseph C.G., Hilal N. Effective coagulation-flocculation treatment of highly pol-luted palm oil mill biogas plant wastewater using dual coagulants: Decolourisation, kinetics and phytotox-icity studies. Journal of Water Process Engineering. 2017. № 16. P. 258 – 269.
9. Meyssami B., Kasaeian A.B. Use of coagulants in treatment of olive oil wastewater model solutions by in-duced air flotation. Bioresource Technology. 2005. 96. P. 303 – 307.
10. Dayarathne H.N.P., Angove M.J, Aryal R., Abuel-Naga H. Removal of natural organic matter from source water: Review on coagulants, dual coagulation, alternative coagulants, and mechanisms. Bandita Mainali a Journal of Water Process Engineering. 2021. Vol. 40 (10182).
11. Manda I.K.M., Chidya R.C.G., Sak J.D.K., Biswick T.T. Comparative assessment of water treatment using polymeric and inorganic coagulants. Physics and Chemistry of the Earth. 2016. 93. P. 119 – 129.
12. Nery J., Gasco L., DabbouS., Schiavone A. Protein composition and digestibility of black soldier fly larvae in broiler chickens revisited according to the recent nitrogen-protein conversion ratio. Journal of In-sects as Food and Feed. 2018. Vol. 4. № 3. P. 171 – 177.
13. Muller A., Wolf D., Gutzeit H.O., Naturforsch Z. The black soldier fly, Hermetia illucens – a promis-ing source for sustainable production of proteins, lipids and bioactive substances. 2017. Vol. 72. Is. 9-10. P. 351 – 363.
14. Surendra K.C. et al. Bioconversion of organic wastes into biodiesel and animal feed via insect farming. Re-newable energy. 2016. Vol. 98. P. 197 – 202.
15. Svergusova S.V., Sapronova Z.A., Svyatchenko A.V., Fomina E.V., Rymarov A.G. Iron-containing modeled waste as raw material for coagulant receiving. IOP Conference Series: Earth and Environmental Science. 2019. P. 032007.
16. Bojkova T.E. Primenenie metodov koagulyacii v vodopodgotovke na cellyulozno-bumazhnyh predpriyati-yah: dis. … kand. tekhn. nauk. Arhangel'sk, 2019. 135 s.