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A Systematic Study on the Effect of Crude Vermiculite on the Adsorption of NH_3-N

Fahui Nie

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Abstract

The result on NH_3-N saturated adsorption capacity of crude vermiculite and adsorption isotherm were studied by adding (vermiculite) to construted wastewater, and the influence of pH,temperature etc., on the removal rate of NH_3-N and regeneration of (saturated) vermiculite were discussed. The experimental results showed that saturated adsorption capacity of vermiculite is 20.8mg/g; At pH level:2.0～6.0, adsorption capacity of vermiculite increases with pH increases, and the optimal pH value is 4.0～6.0;At (temperature:) 15～35℃, absorption capacity of vermiculite inverses to temperature,and the removal rate of NH_3-N improves with dosage (increases.) The order of influencing factors is pHdosagetimetemperature.This confirms basic parameters of vermiculite as a (newtype) (adsorptive) material.

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What this paper is about

The result on NH_3-N saturated adsorption capacity of crude vermiculite and adsorption isotherm were studied by adding (vermiculite) to construted wastewater, and the influence of pH,temperature etc., on the removal rate of NH_3-N and regeneration of (saturated) vermiculite were discussed. The experimental results showed that saturated adsorption capacity of vermiculite is 20.8mg/g; At pH level:2.0～6.0, adsorption capacity of vermiculite increases with pH increases, and the optimal pH value is 4.0～6.0;At (temperature:) 15～35℃, absorption capacity of vermiculite inverses to temperature,and the removal rate of NH_3-N improves with dosage (increases.) The order of influencing factors is pHdosagetimetemperature.This confirms basic parameters of vermiculite as a (newtype) (adsorptive) material.

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Available abstract

The result on NH_3-N saturated adsorption capacity of crude vermiculite and adsorption isotherm were studied by adding (vermiculite) to construted wastewater, and the influence of pH,temperature etc., on the removal rate of NH_3-N and regeneration of (saturated) vermiculite were discussed. The experimental results showed that saturated adsorption capacity of vermiculite is 20.8mg/g; At pH level:2.0～6.0, adsorption capacity of vermiculite increases with pH increases, and the optimal pH value is 4.0～6.0;At (temperature:) 15～35℃, absorption capacity of vermiculite inverses to temperature,and the removal rate of NH_3-N improves with dosage (increases.) The order of influencing factors is pHdosagetimetemperature.This confirms basic parameters of vermiculite as a (newtype) (adsorptive) material.

Key concepts: Vermiculite, Adsorption, Chemistry, Wastewater, Nuclear chemistry, Materials science, Environmental engineering, Organic chemistry

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