RECOVERY OF AMMONIUM AND PHOSPHATE FROM CORN PROCESSING WASTEWATER USING MAGNETIC MgO-BIOCHAR

LIANG Jia-qi; LV Yuan; LU Yin; WANG Xiang-hui; ZHENG min; XU Kang-ning

doi:10.13205/j.hjgc.202009015

Volume 38 Issue 9

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(9): 89-94

LIANG Jia-qi, LV Yuan, LU Yin, WANG Xiang-hui, ZHENG min, XU Kang-ning. RECOVERY OF AMMONIUM AND PHOSPHATE FROM CORN PROCESSING WASTEWATER USING MAGNETIC MgO-BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 89-94. doi: 10.13205/j.hjgc.202009015

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LIANG Jia-qi, LV Yuan, LU Yin, WANG Xiang-hui, ZHENG min, XU Kang-ning. RECOVERY OF AMMONIUM AND PHOSPHATE FROM CORN PROCESSING WASTEWATER USING MAGNETIC MgO-BIOCHAR[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 89-94. doi: 10.13205/j.hjgc.202009015

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RECOVERY OF AMMONIUM AND PHOSPHATE FROM CORN PROCESSING WASTEWATER USING MAGNETIC MgO-BIOCHAR

doi: 10.13205/j.hjgc.202009015

1. Beijing Key Lab for Source Control Technology of Water Pollution, Beijing Forestry University, Beijing 100083, China;
2. Beijing Guohuan Environmental Engineering Design & Research Institute Co., Ltd, Beijing 100084, China;
3. Shanghai SUS Environment Co., Ltd, Shanghai 201703, China;
4. Advanced Water Management Centre, the University of Queensland, St Lucia 4072, Australia

Received Date: 2019-08-12

Abstract

Abstract

This study investigated the recovery of ammonium and phosphate from corn processing wastewater using magnetic MgO-biochar yielded from wood waste. Kinetics property was studied and the process reached equilibrium within 120 h. The maximum adsorption capacities of ammonium-nitrogen and phosphorus by the magnetic MgO-biochar reached 50.4 mg/g and 338.9 mg/g, respectively. According to the characterization, magnesium and iron oxides formed on the biochar surface. Chemisorption was the dominating mechanism for the recovery of ammonium, while chemisorption and chemical precipitation both responded for the recovery of phosphate using the magnetic MgO-biochar. The magnetic MgO-biochar enriched with ammonium and phosphate was a slow release fertilizer of ammonium and phosphate, while no obvious release of ferric ions was observed.
- magnetic,
- MgO-biochar,
- ammonium,
- phosphate,
- pyrolysis

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References(12)

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