Preparation and Adsorption Properties of Biomass Activated Carbon from Ginger Stems

Biomass activated carbon(BAC) was produced from ginger stems by carbonization and activation presented high specific surface areas and mesoporous structures. The carbonization temperature of the ginger stems were controlled within 500～900℃. The optimal carbonization condition is as follows: carbonization temperature of 700℃, carbonization time of 6 h. The determined optimum activation condition is: temperature of 800℃, activator of KOH and carbonized product/alkali ratio of 1:4(w/w). The carbonization yield, BAC yield and Brunauer-Emmett-Teller(BET) surface area were measured and the adsorption performance of BAC to nitrogen was investigated. The results showed that the nitrogen adsorption isotherm curve was as type I isotherm. It was finally determined that the BET surface area was 660 m~2/g under the abovementioned optimal conditions of carbonization and activation. The FESEM analysis indicates that the obtained BAC is of micropore structure.     

海水制浆黑液制备液体防尘涂料及性能研究

为了解决造纸行业水资源短缺、原料短缺以及秸秆制浆黑液难以回收利用等问题,以海水秸秆制浆黑液为介质,以微晶纤维素为填料制备了液体防尘涂料,应用于码头、港口的防尘处理。研究了涂料的组分对涂料粘度、抗水性以及表面张力的影响。结果表明:以海水制浆黑液制备的液体防尘涂料的粒径为461.7nm;添加了2%的瓜尔胶增稠后,粘度达到6107mPa*s;当AKD乳液用量为40%,制浆黑液用量为35%,纤维用量为1%,PAE用量为5%时,制备的液体防尘涂料的表面张力可达30.5mN/m,涂料具有较佳的稳定性以及成膜性。