Effect of corn pre-puffing on the efficiency of MgO-engineered biochar for phosphorus recovery from livestock wastewater:mechanistic investigations and cost benefit analyses  

作　　者：Yaru Peng Yuan Luo Yimeng Li Muhammad Azeem Ronghua Li Chuchu Feng Guangzhou Qu Esmat F.Ali Mohamed A.Hamouda Peter S.Hooda Jörg Rinklebe Ken Smith Zengqiang Zhang Sabry M.Shaheen 

机构地区：[1]College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,Shaanxi Province,China [2]Key Laboratory of Urban Environment and Health,Ningbo Observation and Research Station,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China [3]Institute of Soil and Environmental Sciences,Pir Mehr Ali Shah Arid Agriculture University Rawalpindi,Rawalpindi 46300,Punjab,Pakistan [4]Department of Biology,College of Science,Taif University,P.O.Box 11099,Taif 21944,Saudi Arabia [5]Department of Civil and Environmental Engineering,Faculty of Engineering,United Arab Emirates University,Al Ain,Abu Dhabi,United Arab Emirates [6]School of Engineering and the Environments,Kingston University London,Kingston University London,Kingston Upon Thames KT12EE,London,UK [7]University of Wuppertal,School of Architecture and Civil Engineering,Laboratory of Soil and Groundwater Management,Institute of Foundation Engineering,Water-and Waste-Management,Pauluskirchstraße 7,42285 Wuppertal,Germany [8]The Department of Environmental Science,The University of Arizona,Shantz Building Rm 4291177 E 4Th St.Tucson,Tucson,Arizona 85721,USA [9]Department of Arid Land Agriculture,Faculty of Meteorology,Environment,and Arid Land Agriculture,King Abdulaziz University,Jeddah 21589,Saudi Arabia [10]Department of Soil and Water Sciences,Faculty of Agriculture,University of Kafrelsheikh,Kafr El-Sheikh 33516,Egypt

出　　处：《Biochar》2023年第1期462-478,共17页生物炭（英文）

基　　金：The National Natural Science Foundation of China(32172679);Open Research Project of Ningxia Key Laboratory for the Development and Application of Microbial Resources in Extreme Environments,China(NXTS05)financially supported this work.

摘　　要：To improve the phosphorus(P)recovery efficiency from livestock wastewater,a novel MgO doped mildewed corn biochar with thermal pre-puffing treatment(Mg-PBC)and without pre-puffing(Mg-BC)was synthesized and tested.The thermal-puffing pretreatment improved the effectiveness of metal soaking and MgO dispersion.P recovery time with Mg-PBC(7 h)was significantly shorter than that with Mg-BC(12 h).Moreover,Mg-PBC showed significantly higher P recovery capacity(241 mg g^(−1))than Mg-BC(96.6 mg g^(−1)).P recovery capacity of the Mg-PBC fitted to the Thomas model was 90.7 mg g^(−1),which was 4 times higher than that of Mg-BC(22.9 mg g^(−1))under column test conditions.The mechanisms involved in P recovery included precipitation,surface complexation,and electrostatic interaction.After adsorption,both Mg-BC and Mg-PBC showed relatively low regeneration abilities.The P loaded Mg-BC(Mg-BC-P)and Mg-PBC(Mg-PBC-P),the later particularly,obviously increased the available P content and promoted plant growth.The release of P increased with time in the Mg-PBC-P treated soil,while it decreased with time in the P fertilizer treated soil.A cost-benefit analysis revealed that thermal-puffing pretreatment greatly increased the profit of MgO doped biochar from−0.66 to 5.90 US$kg^(−1).These findings highlight that biomass pre-puffing is a feasible treatment to produce MgO modified biochar and to recover P from livestock wastewater,and that the Mg-PBC-P can be used as a slow-release P fertilizer.

关 键 词：Engineered biochar Biomass pre-puffing Nutrient recovery Wastewater engineering Cost-benefit analysis 

分 类 号：X703[环境科学与工程—环境工程]