LIUXin-xin,PANGMin,LIHui-dong,et al.Preparation of Sludge-based Magnetic Adsorbent and Its Removal of Copper from Wastewater[J].China Water & Wastewater,2023,39(21):99-103.
污泥基磁性吸附剂制备及其去除废水中铜的研究
- Title:
- Preparation of Sludge-based Magnetic Adsorbent and Its Removal of Copper from Wastewater
- 摘要:
- 为探究污泥基吸附剂材料对铜离子的去除效果，将市政污泥、山竹果皮废弃物、四氧化三铁和碳酸钾按4∶1∶2.5∶0.5的质量比相结合，在400 ℃条件下炭化1 h后制得高效磁性污泥基吸附剂，进一步化学改性后得到羧基化磁性污泥基吸附剂。将其用于含铜废水的处理，并通过扫描电镜等进行表征。结果表明，对于50 mL铜离子溶液（50 mg/L），温度为25 ℃、pH为5.0、吸附剂投加量为25 mg是最优吸附条件。准二级动力学模型和 Langmuir 吸附等温线模型可以很好地描述吸附过程，对铜的最大吸附量为142.65 mg/g。同等条件下，相较于未改性前，羧基化改性磁性污泥基吸附剂的吸附容量提高约10%，平衡时间缩短约120 min。
- Abstract:
- A high-efficiency sludge-based magnetic adsorbent was prepared under the following parameters: mass ratio of municipal sludge, mangosteen peel waste, ferric oxide and potassium carbonate of 4∶1∶2.5∶0.5, and carbonization at 400 ℃ for 1 h. After further chemical modification, a carboxylated sludge-based magnetic adsorbent was prepared for adsorption of copper-containing wastewater and characterized by scanning electron microscopy, so as to explore the performance of the sludge-based adsorbent materials for the removal of copper ions. For 50 mL of copper ion solution (50 mg/L), the optimal adsorption conditions were as follows: temperature of 25 ℃, pH of 5.0 and adsorbent dosage of 25 mg. The pseudo-second order kinetic and Langmuir isotherm model could fit the adsorption experiment well, and the maximum adsorption capacity was 142.65 mg/g. Under the same conditions, the adsorptive capacity of the modified carboxylated sludge-based magnetic adsorbent was increased by approximately 10% and the equilibrium time was shortened by approximately 120 min compared with those of the unmodified adsorbent.
相似文献/References:
[1]鲁涛,朱宝飞,石春梅,等.污泥碳化系统试运行及污泥炭回归土壤可行性分析[J].中国给水排水,2018,34(21):108.
LU Tao,ZHU Bao fei,SHI Chun mei,et al.Test Run of Sewage Sludge Carbonization System and Feasibility Analysis of Sludge Carbon Land Use[J].China Water & Wastewater,2018,34(21):108.
[2]李慧莉,何芙蓉,刘鹏程,等.外源酶强化秸秆污泥混合厌氧消化条件优化[J].中国给水排水,2020,36(15):6.
LI Hui-li,HE Fu-rong,LIU Peng-cheng,et al.Optimization of Anaerobic Co-digestion Conditions of Straw and Sludge Enhanced by Exogenous Enzymes[J].China Water & Wastewater,2020,36(21):6.
[3]孙建升,叶雅丽,郑兴灿,等.昆明市污水处理厂污泥处理工艺的研究与探讨[J].中国给水排水,2020,36(18):108.
SUN Jian-sheng,YE Ya-li,ZHENG Xing-can,et al.Research and Discussion on the Sludge Disposal Technology of Kunming WWTPs[J].China Water & Wastewater,2020,36(21):108.
[4]张会文,代晓炫,姜伟,等.市政污泥的水热反应减量化及水分赋存形态研究[J].中国给水排水,2021,37(7):96.
ZHANG Hui-wen,DAI Xiao-xuan,JIANG Wei,et al.Reduction and Water Forms of Municipal Sludge Treated by Hydrothermal Reaction[J].China Water & Wastewater,2021,37(21):96.
[5]吕开雷,杨淘,陈紫君,等.电解铝烟气余热低温干化处理市政污泥工程应用[J].中国给水排水,2021,37(12):120.
Lü Kai-lei,YANG Tao,CHEN Zi-jun,et al.Application of Low Temperature Drying in Municipal Sludge Treatment with Waste Heat of Electrolytic Aluminum Flue Gas[J].China Water & Wastewater,2021,37(21):120.
[6]李义烁,梁远,颜莹莹,等.餐厨垃圾/市政污泥/城市粪便联合厌氧消化沼液处理设计[J].中国给水排水,2021,37(14):56.
LI Yi-shuo,LIANG Yuan,YAN Ying-ying,et al.Design of Treatment Process of Biogas Slurry from Anaerobic Co-digestion of Kitchen Waste/Municipal Sludge/Urban Excrement[J].China Water & Wastewater,2021,37(21):56.
[7]李彪,周欣,高波,等.顺义区污泥干化焚烧处理工程工艺设计[J].中国给水排水,2021,37(14):63.
LI Biao,ZHOU Xin,GAO Bo,et al.Design of Sludge Drying Incineration Treatment Process in Shunyi District[J].China Water & Wastewater,2021,37(21):63.
[8]东东,赵珊,郭学彬,等.典型污泥高级厌氧消化工艺中恶臭物质的分布特征[J].中国给水排水,2021,37(21):7.
DONG Dong,ZHAO Shan,GUO Xue-bin,et al.Distribution Characteristics of Odorants in Typical Sludge Advanced Anaerobic Digestion Process[J].China Water & Wastewater,2021,37(21):7.
[9]程文,蒋岚岚,耿震,等.太原市城市污水厂污泥资源化利用工程设计[J].中国给水排水,2022,38(24):72.
CHENGWen,JIANGLan-lan,GENGZhen,et al.Engineering Design of Sludge Resource Utilization in Taiyuan Municipal Wastewater Treatment Plant[J].China Water & Wastewater,2022,38(21):72.
[10]李思敏,李思雨,唐锋兵,等.通风速率对市政污泥好氧堆肥氮素转化的影响[J].中国给水排水,2023,39(5):121.
LISi-min,LISi-yu,TANGFeng-bing,et al.Effect of Ventilation Rate on Nitrogen Transformation of Municipal Sludge in Aerobic Composting[J].China Water & Wastewater,2023,39(21):121.