BAIHua-qing,WEIYe-xiang,ZENGZheng-ren,et al.Preparation of FeCl3 Modified Sludge Hydrothermal Carbon and Its Adsorption of Vanadium in Water[J].China Water & Wastewater,2025,41(9):81-87.
FeCl3改性污泥水热炭的制备及对水中钒的吸附
- Title:
- Preparation of FeCl3 Modified Sludge Hydrothermal Carbon and Its Adsorption of Vanadium in Water
- Keywords:
- sludge; hydrothermal carbon; modification; vanadium; adsorption
- 摘要:
- 钒矿开采和加工过程中会产生大量废水，其中钒元素具有潜在毒性和环境风险。水热炭作为一种新兴吸附剂，在水处理领域显示出了巨大的应用潜力。以脱水污泥为原料制备污泥水热炭（HTC），再用FeCl3改性后得到改性水热炭（MBC）。对HTC和MBC进行比表面积和孔径、SEM、FT-IR、Zeta电位表征分析，并探究它们对水中钒的吸附效果和重复利用性。结果表明，经改性后污泥水热炭成功负载了铁氧化物，对阴离子型污染物的吸附能力增强。HTC和MBC吸附含钒废水的最佳pH分别为3和4，最佳投加量为12 g/L，MBC抗阴离子干扰能力优于HTC。HTC和MBC对钒的吸附与Langmuir方程和准二级动力学方程的拟合效果更好。经过4次吸附-脱附后，MBC对初始浓度为50 mg/L的钒溶液的吸附率仍高达98.42%，说明MBC在处理含钒废水中具有较大的应用潜力。
- Abstract:
- During the mining and processing of vanadium ore, large amounts of wastewater are generated, and the vanadium element poses potential toxicity and environmental risks. Hydrothermal carbon (HTC), as an emerging adsorbent, has shown great potential in the field of water treatment. Using dewatered sludge as the raw material, HTC was prepared, and then modified with FeCl3 to obtain modified biochar (MBC). Characterization analysis, including specific surface area and pore size, SEM, FT-IR, and Zeta potential, were conducted on both HTC and MBC to investigate their adsorption performance and reusability for vanadium in water. The results indicated that the modified hydrothermal carbon successfully loaded iron oxides, enhancing its adsorption capacity for anionic pollutants. The optimal pH for vanadium adsorption in wastewater by HTC and MBC was 3 and 4, respectively, with an optimal dosage of 12 g/L. MBC exhibited better resistance to anion interference compared to HTC. The adsorption of vanadium by both HTC and MBC fitted well with the Langmuir isotherm and pseudo-second-order kinetic models. After four adsorption-desorption cycles, the adsorption rate of MBC for a vanadium solution with an initial concentration of 50 mg/L remained at 98.42%, demonstrating that MBC has great potential for the treatment of vanadium-containing wastewater.
相似文献/References:
[1]刘常青,陈琬,曾艺芳,等.SARD与CSTR反应器半连续发酵产氢能力对比[J].中国给水排水,2018,34(21):7.
LIU Chang qing,CHEN Wan,ZENG Yi fang,et al.Hydrogen Production Capacity of Semi continuous Fermentation of SARD and CSTR Bio hydrogen Production Reactor[J].China Water & Wastewater,2018,34(9):7.
[2]颜莹莹,梁远,沙雪华,等.新冠肺炎疫情下关于减少污泥中病原体的思考[J].中国给水排水,2020,36(6):22.
[3]郭波,田瑜,范晨,等.绿色纳米铁/H2O2联用两性脱水剂调理污泥研究[J].中国给水排水,2020,36(13):62.
GUO Bo,TIAN Yu,FAN Chen,et al. Sludge Conditioning by Green Iron Nanoparticles/H2O2 Combined with Amphoteric Dewatering Agent [J].China Water & Wastewater,2020,36(9):62.
[4]许劲,范准,吕秋颖,等.山地城市污泥水热炭化产物特性研究[J].中国给水排水,2020,36(21):21.
XU Jin,FAN Zhun,L Qiu-ying,et al.Characteristics of Hydrothermal Carbonization Products of Municipal Sludge in Mountainous Cities[J].China Water & Wastewater,2020,36(9):21.
[5]李金河,张波涛,刘宝玉,等.污泥中温厌氧消化最佳温度及改善机理分析[J].中国给水排水,2021,37(3):9.
LI Jin-he,ZHANG Bo-tao,LIU Bao-yu,et al.Optimal Reaction Temperature in Mesophilic Anaerobic Digestion of Waste Activated Sludge and Its Promotion Mechanism[J].China Water & Wastewater,2021,37(9):9.
[6]王丽花,吕国钧,王飞,等.污泥干化焚烧系统的节能降耗研究[J].中国给水排水,2021,37(4):29.
WANG Li-hua,Lü Guo-jun,WANG Fei,et al.Research on Energy Saving and Consumption Reduction of Sludge Drying and Incineration System[J].China Water & Wastewater,2021,37(9):29.
[7]纪莎莎,黄瑾.污泥焚烧工程中的磷形态分布与磷迁移研究[J].中国给水排水,2021,37(5):26.
JI Sha-sha,HUANG Jin.Phosphorus Forms Distribution and Migration in Sludge Incineration Project[J].China Water & Wastewater,2021,37(9):26.
[8]马彩霞,刘蕾,李碧清,等.强化化学淋滤对污泥重金属溶出及磷释放的影响[J].中国给水排水,2021,37(5):66.
MA Cai-xia,LIU Lei,LI Bi-qing,et al.Effect of Enhanced Chemical Leaching on Heavy Metal Dissolution and Phosphorus Release from Sludge[J].China Water & Wastewater,2021,37(9):66.
[9]李伟,常菁,王佳伟,等.热水解高级厌氧消化系统的污泥消毒、减量与能量回收[J].中国给水排水,2021,37(16):19.
LI Wei,CHANG Jing,WANG Jia-wei,et al.Sludge Disinfection, Reduction and Energy Recovery by Anaerobic Digestion with Thermal Hydrolysis Pretreatment[J].China Water & Wastewater,2021,37(9):19.
[10]胡佩佩,侯锋,范莹,等.深度脱水污泥好氧发酵工艺研究[J].中国给水排水,2021,37(17):74.
HU Pei-pei,HOU Feng,FAN Ying,et al.Aerobic Fermentation Process of Deep Dewatering Sludge[J].China Water & Wastewater,2021,37(9):74.