Coconut shell-based heavy metal adsorbent and preparation method thereof
A heavy metal and adsorbent technology, applied in the field of environmental governance, can solve problems such as secondary pollution, high energy consumption, and large investment, and achieve the effect of strong adsorption capacity and large adsorption capacity
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Embodiment 1
[0019] Embodiment 1: the preparation of coconut shell-based heavy metal adsorbent
[0020] A coconut shell-based heavy metal adsorbent prepared from the following components by weight (kg):
[0021] Coconut shell 25, plant ash 8, peanut shell 4, xanthan gum 4, maltodextrin 1.5, malic acid 1.5, xylitol 1.5, sodium polyacrylate 0.8, sodium humate 0.15, sodium stearoyl lactylate 1.5, additives 7 , water 70;
[0022] Wherein, the auxiliary agent is made of the following raw materials in parts by weight:
[0023] Fresh tea leaves 25, fresh pine needles 4, fresh mulberry leaves 4, citric acid 3, oxalic acid 0.8, sodium citrate 1.5, sodium lauroyl sarcosinate 0.8, water 90;
[0024] The preparation method of auxiliary agent is:
[0025] Clean and crush fresh tea leaves, fresh pine needles and fresh mulberry leaves, mix them with sodium citrate, and grind them evenly, first add citric acid, oxalic acid and water and stir for 6 hours at 90°C and 400r / min, then add sodium lauroyl sar...
Embodiment 2
[0029] Embodiment 2: to the adsorption effect of heavy metal lead and copper
[0030] Take by weighing sorbent material 0.5g among the embodiment 1, join 1L heavy metal lead ion concentration in the water of 0.1g / L, absorb 1h at room temperature, detect the concentration of remaining lead ion in the solution, record adsorption capacity and be 37.2mg / L g.
[0031] Take by weighing sorbent material 0.5g among the embodiment 1, join 1L heavy metal copper ion concentration in the water of 0.1g / L, absorb 1h at room temperature, detect the concentration of residual copper ion in the solution, record the adsorption capacity to be 44.5mg / L g.
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