{'fraction_non_alphanumeric': 0.012181616832779624, 'fraction_numerical': 0.0, 'mean_word_length': 5.647058823529412, '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}}
Study of the treated and magnetically modified bentonite as possible sorbents of heavy metals

Bentonite with its unique structural properties is a valuable material for environmental application. Its sorption properties are usually improved by the different ways of modification. In this work, the special sedimentation method was used for the treatment of the natural bentonite to obtain monomineral fraction of montmorillonite. The modification by iron oxide particles was used with the aim to prepare the magnetic sorbent with enhanced sorption properties of treated bentonite. The removal of nickel from aqueous solutions by the natural, treated and magnetically modified bentonite was studied in batch adsorption-equilibrium experiments. The experimental data were fitted with Langmuir and Freundlich isotherms. The sorption capacities of the natural, treated and modified bentonite were compared.