Transition metal modified montmorillonite phosphorus removing adsorbent prepared based on cross precipitation method

Abstract

The invention discloses a transition metal modified montmorillonite phosphorus removing adsorbent prepared based on a cross precipitation method. The transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method is prepared by the following steps of cleaning montmorillonite with acetone, ethanol, tap water and deionized water to obtain a substance A, and modifying the substance A with a mixed liquid prepared from ammonium paratungstate, lanthanum nitrate, lithium niobate, cerous nitrate, sodium aluminate, aluminum nitrate, ammonium molybdate and ferric nitrate to prepare a substance J; and modifying the substance J with a mixed liquid prepared from aluminum nitrate, ferric nitrate, lanthanum nitrate and cerous nitrate to obtain a substance, i.e. the transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method. The transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method has the beneficial benefits that the transition metal modified montmorillonite phosphorus removing adsorbent prepared based on the cross precipitation method has the characteristics of high adsorption efficiency to phosphorus, rapidness in speed, large adsorption capacity, capability of regeneration and reuse and the like.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a transition metal modified montmorillonite phosphorus removal adsorbent prepared based on a cross deposition method. Background technique [0002] Phosphorus (P) is an active element that widely exists in animal and plant tissues. It is the basic nutrient for the growth of plants and animals and one of the most abundant elements in the human body. It not only constitutes the composition of the human body, but also participates in vital activities. Metabolic processes, the balance of which depends primarily on the exchange of phosphorus between the in vivo and in vitro environments. The abundance and deficiency of phosphorus element and the quality of phosphorus environment will directly reflect the quality of the environment and ecosystem, and its morphological characteristics and dynamic changes in the environment (soil and water) will directly affect t...

AI Technical Summary

Problems solved by technology

However, the general adsorbent is expensive and the regeneration rate is not high.

Therefore, seeking an adsorbent with high efficiency, large adsorption capacity and high regeneration rate is the focus of the adsorption research field. At present, there is still a lack of efficient phosphorus removal adsorbents.