Papers by Author: Fei Huang

Abstract: In this study, the adsorption of Cu²⁺ and Cd²⁺ in wastewater by modified bentonite was investigated. The effect of adsorption adsorbent dosage, pH, time and temperature conditions, etc. on the adsorption was also studied. The results showed that adsorption of Cu²⁺ and Cd²⁺ in wastewater by modified bentonite increased with the increase of the adsorbent. When dosing quantity was 0.6g, the adsorption rate on Cu²⁺ and Cd²⁺ can reach respectively 92.4% and 87.3%. In 30 minutes, the adsorption rate on Cu²⁺ and Cd²⁺ can achieve above 93.3% and above 91.8% respectively closing to adsorption balance. When pH of the system is between 6-7, adsorption is to equal balance, the adsorption rate on Cu²⁺ and Cd²⁺ can reach above 92%. When the temperature is 30°C, absorption rate on Cu²⁺ and Cd²⁺ in wastewater by modified bentonite is 93.6% and 91.8%, the adsorption effect is the best.

Abstract: Morphology and micro-structure of the pyrite whiskers synthesized by hydrothermal process were systematically observed by using transmission electron microscope. The results indicated that whiskers revealed various morphologies, including smooth, rough and branched. Combined with the hydrothermal reaction conditions, the causes of whiskers morphology diversity is: straight smooth whiskers grow in the condition of stable concentration, temperature, and interface state; whiskers with rough surface and complex morphology grow in the condition of unstable concentration, temperature, and interface state; the same level branching structure rotation was the result of hydrothermal disturbance; nano-crystalline grains formed after the main growth of the whiskers.

Abstract: In this study an attempt has been made to find the suitability of the ceramic waste mud as a possible substitute for conventional concrete. Experiments were carried out to determine the flexural and compressive strengths of concrete and the modulus of elasticity of mortar with various activators. The result indicated that cement could be partly replaced by ceramic waste mud. The strength of concrete verious as the activator changed, so the key to increase the strength of concrete is to find the proper activor.