Method for preparing washing-agent or soap-powder modification leersia hexandra heavy metal ion adsorbents

Abstract

The invention discloses a method for preparing washing-agent or soap-powder modification leersia hexandra heavy metal ion adsorbents. The method includes the steps that 1, leersia hexandra is collected, washed through tap water three times and then washed through ultrapure water three times; 2, the obtained leersia hexandra is placed into kraft archival bags to be placed into a 80-DEG-C air blowing drying box to be dried for 24 hours, and then the leersia hexandra is smashed through a high-speed smashing machine to pass through a 50-mesh sieve; 3, 0.5 g of washing agents or 0.5 g of soap powder and 100 ml of deionized water are mixed to obtain a modifying solution; 4, 1 g of the sieved leersia hexandra is added into the obtained modifying solution, a shaking table is adjusted to achieve the conditions of the constant temperature of 25 DEG C and the rotating speed of 125 r / min, after the reaction is carried out for 12 hours, the mixture is washed through deionized water till the pH is neutral, products obtained after filtering are dried in a 60-DEG-C drying box for 24 hours, and the washing-agent or soap-powder modification leersia hexandra heavy metal ion adsorbents are obtained. According to the method, raw material sources are wide, cost is low, the effect is remarkable, the operation process is simple, and secondary pollution can be avoided in the adsorption process; adsorbed Cu2+ is easy to desorb, further enrichment and resource recycling can be achieved, and cycle utilization of resources is achieved.

Description

technical field [0001] The invention relates to the field of heavy metal wastewater treatment, in particular to a preparation method of detergent or soap powder modified Lishihe heavy metal adsorbent. Background technique [0002] With the improvement of human science level, the treatment technology of heavy metal polluted wastewater has been continuously developed. Although there are many treatment methods for heavy metal wastewater, they can be roughly divided into three types according to the principle of treatment methods: chemical method, physical chemical method and biological method. Chemical method is to remove heavy metal ions in water through chemical reaction, including chemical precipitation method, redox method and electrolysis method; physical and chemical method is to make heavy metal ions in water adsorb without changing their chemical form. , concentration, and separation methods, including ion exchange, adsorption, reverse osmosis, electrodialysis, and evap...

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Problems solved by technology

The research on the mechanism of biosorption is still incomplete and lacks systematicness, which hinders the development and utilization of high-performance and high-selectivity adsorbents.

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