Çopur, MehmetŞenol, Ayşe MervePekdemir, TurgayOnganer, Yavuz2024-07-302024-07-302023Çopur, M., Şenol, A. M., Pekdemir, T., & Onganer, Y. (2023). Industrial Symbiosis: CO2 Utilization by Producing Disodium Octaborate Tetrahydrate and Baking Soda from Borax. Industrial & Engineering Chemistry Research, 62(34), 13340-13354.0888-58851520-5045http://dx.doi.org/10.1021/acs.iecr.3c01095https://hdl.handle.net/20.500.12491/12291This work was supportedby a grant from the Scientific Research Projects funding Scheme of Ataturk University, Erzurum, Turkiye [grant number: 2010/218].This paper proposesa novel method for CO2 capture,utilization, and sequestration (CCUS) with borax producing disodiumoctaborate tetrahydrate (Na2O & BULL;4(B2O3)& BULL;4H(2)O & EQUIV; Na2B8O13 & BULL;4H(2)O, DSOBTH) equivalent boron compoundsand sodium bicarbonate (NaHCO3). We tested the performanceof this method experimentally using aqueous ammonium (NH4 (+)) solutions in a pressurized reactor (1 L) continuouslypurged with pure (99.9%) CO2. Experimental parameters werechanged as temperature (T), 45-65 & DEG;C; solid-to-liquidratio (SLR), 0.69-0.92 g/mL; reaction time (t), 30-60 min; pressure (P), 5-30 bar;NH3 concentration (AC) 2.82-5.65 M; and steeringspeed (SS), 500 rpm. The results showed that P and T were highly influential on the performance. The best conditionsfor CO2 utilization were found as P =20 bar; T = 60 & DEG;C; SLR = 0.77 g/ml; t = 50 min; and AC = 4.76 M. Per ton of tincal, under theseconditions, produced were 0.274 ton of DSOBTH (& SIM;67% B2O3), 0.216 ton of NaHCO3 (& SIM;95% purity),0.386 ton of avoided boric acid, and 0.417 ton of avoided CO2. The total potential added value can be about $1100/ton of tincal.eninfo:eu-repo/semantics/openAccessBoric-AcidOptimum ConditionsCarbon-DioxideMineral CarbonationSodium PentaborateFlue-GasCaptureArticle10.1021/acs.iecr.3c010956213340133542-s2.0-85169311659Q1WOS:001051338400001Q2