Treatment of wastewater from food waste hydrothermal carbonization via Fenton oxidization combined activated carbon adsorption  

作　　者：Tianchi Shen Mi Yan Yuhao Xia Ruixiong Hu Yayong Yang Cheng Chen Feng Chen Dwi Hantoko 

机构地区：[1]Institute of Energy and Power Engineering,College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,310014,China

出　　处：《Waste Disposal and Sustainable Energy》2022年第3期205-218,共14页废弃物处置与可持续能源（英文）

基　　金：the financial support from the National Natural Science Foundation,China(No.51976196,No.52150410422).

摘　　要：Hydrothermal carbonization(HTC)of food waste can produce hydrochar for further utilization as high-quality fuel or carbon materials,but the by-product of liquid effluent,named HTC wastewater,has a high chemical oxygen demand(COD)content and other organic pollutants.This study focused on the feasibility of Fenton oxidation combined with activated carbon(AC)to reduce COD in HTC wastewater.The effects of different parameters including pH,dosage of hydrogen peroxide,molar ratio of Fe^(2+)/H_(2)O_(2),and reaction time were tested and discussed.Eventually,through the optimized Fenton oxidation(pH=3,H_(2)O_(2)dosage=1.5 mol/L,Fe^(2+)/H_(2)O_(2)=1:15,reaction time=60 min)combined optimized AC adsorption process(AC dosage=30 g/L),the COD value reduced from 42,000 mg/L to 3075 mg/L,indicating a COD removal efficiency of 92.7%and a color removal ratio of 91.9%,respectively.The comparison of GC/MS(gas chromatography mass spectrometer)and FTIR(Fourier transform infrared spectrometer)of liquid residual from different treatment methods also indicated that the types of organic substances in HTC wastewater were significantly reduced through Fenton oxidation and AC adsorption.

关 键 词：Food waste Hydrothermal carbonization FENTON ADSORPTION WASTEWATER 

分 类 号：X703[环境科学与工程—环境工程]