Properties improvement of paper mill sludge-based granular activated carbon fillers for fluidized-bed bioreactor by bentonite (Na) added and acid washing

被引：12

作者：

Li, Yanjie ^{[1
]}

Yue, Qinyan ^{[1
]}

Li, Wenhong ^{[1
]}

Gao, Baoyu ^{[1
]}

Li, Jinze ^{[1
]}

Du, Jiadan ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, Jinan 250100, Shandong, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2011年 / 197卷

关键词：

Properties improvement; Granular activated carbon; Filler; Acid washing; PHENOL DEGRADATION; DRAFT-TUBE; ADSORBENTS; WATER; PYROLYSIS; BIODEGRADATION; DYNAMICS; REMOVAL; REACTOR; STEAM;

D O I：

10.1016/j.jhazmat.2011.09.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Properties improvement of paper mill sludge (PMS) based granular activated carbon fillers for fluidized-bed bioreactor (FBBR) was investigated in this study. Bentonite (Na) powders were blended in the dewatered paper mill sludge powders to strengthen the abrasion resistance strength of the fillers. Different acid washing treatments were studied to produce FBBR fillers with optimum performance. The results indicated that granulation was easy and the abrasion resistance strength of the fillers increased by 15% with 8 wt% of bentonite (Na) added. Acid washing treatment prior to activation had a better effect on the removal of Fe than post-activation acid washing treatment. HCl was the most appropriate acid during the acid washing treatment. The optimum acid washing treatment was carried out prior to activation with 2 M HCl soaking for 6 h. After acid washing treatment, the fillers with grain density of 1170 kg/m(3), specific surface area of 176 m(2)/g were obtained. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：33 / 39

页数：7