The impact of the particle size of meat and bone meal (MBM) incineration ash on phosphate precipitation and phosphorus recovery
The impact of the particle size of meat and bone meal (MBM) incineration ash on phosphate precipitation and phosphorus recovery
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肉骨粉（MBM）焚烧灰粒径对磷酸盐沉淀和磷回收的影响
DOI：
10.1016/j.jece.2021.105247
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发表时间：
2021-06
影响因子：
7.7
通讯作者：
Huang Huajun
中科院分区：
文献类型：
--
作者：
Leng Lijian;Zhang Weijin;Li Hailong;Bogush Anna A.;Stegemann Julia A.;Huang Huajun
对肉骨粉灰进行了表征，并将其用于含磷废水的处理和磷的回收。粒径>250 µm的底灰（MBM-BA）约占80%，均匀分布在>1000 µm、500-1000 µm和250-500 µm的部分中，而空气污染控制残留物（MBM-APCr）均匀分布在250-500 µm、125-250 µm和<125 µm的部分中。灰分中的磷含量范围为7.9-15.6%，这取决于颗粒大小，MBM-BA中的磷含量（14.33%）高于MBM-APCr（9.28%）。X射线粉末衍射（XRD）分析表明，MBM-BA和MBM-APCr中的P主要以羟基磷灰石（HAP）为主。随着MBM-BA粒径的减小，HAP降低，Ca（OH）2增加。NaCl和Na_2SO_4·3K_2SO_4在MBM-APCr中的含量较高，且随粒径减小而增加。灰的种类、pH值和粒径对合成废水中磷酸盐的去除有显著影响。MBM-BA和MBM-APCr的除磷能力分别为13.5-279和13.5- 36.6mgPO43-/g灰分。磷酸盐去除能力与颗粒尺寸有关;尺寸越小，能力越高：尺寸>1000 µm和<63 µm的MBM-BA的去除能力分别为13.5和279 mg/g。平衡pH > 8有利于磷的去除。根据固相组成、处理前后的萃取物组成以及Ca/P比为1.22-1.73，HAP的除磷机理以结晶/沉淀为主。用MBM-BA处理废水，使其含磷量提高到16.30%。根据颗粒大小，从MBM-BA中回收84%的P的酸消耗为2.6-3.0 mM H+/mM P。根据这些发现提出了管理和利用MBMA的策略。
Meat and bone meal (MBM) ash was characterized and used for phosphate wastewater treatment and phosphorus recovery. The bottom ash (MBM-BA) with size >250 µm accounted for ~80% and distributed evenly in the >1000 µm, 500–1000 µm, and 250–500 µm fractions, while air pollution control residue (MBM-APCr) distributed evenly among the 250–500 µm, 125–250 µm, and <125 µm fractions. The P content in ash ranged 7.9–15.6% depending on particle size, and P content in MBM-BA (14.33%) was higher than MBM-APCr (9.28%). P in both MBM-BA and MBM-APCr was mainly hydroxyapatite (HAP) as analysed by X-ray powder diffraction (XRD). Decreased HAP and increased Ca(OH)2were observed with decreasing particle size of MBM-BA. NaCl and Na2SO4·3K2SO4were found with high content in the MBM-APCr, and increased as decreasing size. Ash type, pH, and particle size had significant effects on phosphate removal from synthetic wastewater. Phosphate removal capacities of 13.5–279 and 13.5–36.6 mg PO43–/g ash were obtained using MBM-BA and MBM-APCr, respectively. Phosphate removal capacities were particle size-dependent; the smaller the size, the higher the capacity: those for MBM-BA of size >1000 µm and <63 µm were 13.5 and 279 mg/g, respectively. Equilibrium pH > 8 was favorable to P removal. Based on the compositions of the solid phases, extracts before and after treatment, and Ca/P ratio 1.22–1.73, the phosphate removal mechanisms were dominated by HAP crystallization/precipitation. Using MBM-BA for wastewater treatment increased its P content to 16.30%. Depending on particle size, the acid consumption for P recovery of 84% from MBM-BA was 2.6–3.0 mM H+/mM P. Strategies for management and utilization of MBMA according to these findings were proposed.
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影响因子：
12.8
作者：
Hoon Jang;Seon-Hong Kang
通讯作者：
Hoon Jang;Seon-Hong Kang
DOI：
10.1016/j.proeng.2016.02.069
发表时间：
2016
期刊：
Procedia Engineering
影响因子：
--
作者：
S. Troesch;D. Esser;P. Molle
通讯作者：
S. Troesch;D. Esser;P. Molle
影响因子：
--
作者：
L. Chow
通讯作者：
L. Chow
影响因子：
7.4
作者：
Bogush, Anna A.;Stegemann, Julia A.;Wood, Ian G.
通讯作者：
Wood, Ian G.
DOI：
--
发表时间：
2010
期刊：
--
影响因子：
--
作者：
D. Cordell
通讯作者：
D. Cordell