{'fraction_non_alphanumeric': 0.029393370856785492, 'fraction_numerical': 0.01813633520950594, 'mean_word_length': 5.2015503875969, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Efficient phase separation in metalworking emulsions due to pH-induced destabilization and addition of aluminosilicates specialized demulsifiers

In this study, effect of pH adjustment and addition of specialized aluminosilicates on the effectiveness of destabilization of metalworking fluids emulsion, in relation to turbidity, as well as chemical oxygen demand (COD) of obtained water phase was investigated. The two different aluminosilicates from C.H. Erbslöh (Germany) were used for the adsorption of oil on silicate structure. The silicates showed different effectiveness, depending on the product, pH of emulsion, and quantity of powder adsorbent used for the same emulsion system. The results of experiments indicated that cutting oil emulsions based on Emulgol ES-12 were stable in pH range from 3.5 to 12.5, in an ambient temperature of 25°C. Below and above-mentioned pH levels, the dispersion started to break. Moreover, the emulsion degradation process was studied with advanced light scattering techniques – with Turbiscan Lab® Expert apparatus, and with photometer PCE-TUM-20. The addition of the specialized silicate based chemicals resulted in excellent separation of phases of an emulsion. The obtained nephelometric turbidity unit dropped by 99.7% from ca. 750 to 2.3 NTU, while COD decreased by 88.5% from ca. 4,760 to ca. 550 mg/L. In this article, the mechanism of oil droplets interactions with aluminosilicates particles was also described. The experiments allowed the estimation of optimal conditions for phase separation with the usage of aluminosilicates as oil adsorbents