Effect of Magnetic Chitosan Hydrogel Beads with Immobilized Feammox Bacteria on the Removal of Ammonium from Wastewater

被引：3

作者：

Liu Z.-W. ^{[1
,2
]}

Chen C. ^{[2
]}

Peng X.-C. ^{[2
]}

Xie W.-M. ^{[1
]}

Huang Z.-Y. ^{[2
,3
]}

Han Q.-J. ^{[2
,4
]}

机构：

[1] School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou

[2] South China Institute of Environmental Science, Ministry of Environmental Protection, Guangzhou

[3] Guangdong Province Vocational School of Oceanographic Engineering, Guangzhou

[4] College of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an

来源：

Peng, Xiao-Chun (pengxiaochun@scies.org) | 2018年 / Science Press卷 / 39期

关键词：

Ammonium oxidation coupling with iron reduction (Feammox); Ammonium removal; Immobilization; Iron reduction; Magnetic chitosan hydrogel beads(MCHBs);

D O I：

10.13227/j.hjkx.201801156

中图分类号：

学科分类号：

摘要：

The bacterial reaction of ammonium oxidation coupling with iron reduction (Feammox) has been discovered recently. To improve the ammonium removal efficiency from wastewater of Feammox bacteria, magnetic chitosan hydrogel beads (MCHBs) were prepared via sodium hydroxide co-precipitating-sol-gel method, Feammox bacteria were immobilized to 1-5 mm MCHBs, and the ammonium removal efficiency by MCHBs-Feammox bacteria was compared to free-Feammox bacteria. In addition, the influences of initial ammonium concentration, pH and temperature were assessed. The results showed that the MCHBs were ferromagnetic and exhibited high crystallinity, with the magnetization of saturation of 29.46 emu•g -1 . The average rates of ammonia oxidation and iron reduction increased by 42.96% and 20.75% after Feammox bacteria immobilization, respectively, and the most significant effect was observed on 1-2 mm MCHBs-Feammox bacteria (P<0.05). Furthermore, 1-2 mm MCHBs immobilized bacteria worked in less favorable matrix concentrations, temperatures, and pH. Particularly, it could maintain high ammonium removal efficiency with 60.00 mg•L -1 initial ammonium concentration, 25℃ temperature and 4.50 pH. In addition, nitrate and ferrous ions were detected in the system. The highest ammonium removal rate occurred on day 16, reaching 53.62%. These results indicated that MCHBs immobilization can improve the ammonium removal efficiency of Feammox. © 2018, Science Press. All right reserved.

引用

页码：4601 / 4611

页数：10

共 51 条

[21] Wen Y.Z., Liang Y., Shen C.S., Et al., Synergistic removal of dyes by Myrothecium verrucaria immobilization on a chitosan-Fe membrane, RSC Advances, 5, 83, pp. 68200-68208, (2015)
[22] Helander I.M., Nurmiaho-Lassila E.L., Ahvenainen R., Et al., Chitosan disrupts the barrier properties of the outer membrane of Gram-negative bacteria, International Journal of Food Microbiology, 71, 2-3, pp. 235-244, (2001)
[23] Ariyavongvivat E., Suraraksa B., Chaiprasert P., Physicochemical and biological characteristics of enhanced anaerobic microbial granulation by synthetic and natural cationic polymers, Energy Procedia, 79, pp. 851-858, (2015)
[24] Jing G.H., Zhou J., Zhou Z.M., Et al., Reduction of Fe(Ⅲ)EDTA - in a NO x scrubbing solution by magnetic Fe 3 O 4 -chitosan micr
[25] Huang S., Jaffe P.R., Characterization of incubation experiments and development of an enrichment culture capable of ammonium oxidation under iron-reducing conditions, Biogeosciences, 12, 3, pp. 769-779, (2015)
[26] Van De Graaf A.A., De Bruijn P., Robertson L.A., Et al., Autotrophic growth of anaerobic ammonium-oxidizing micro-organisms in a fluidized bed reactor, Microbiology, 142, 8, pp. 2187-2196, (1996)
[27] Viollier E., Inglett P.W., Hunter K., Et al., The ferrozine method revisited: Fe(Ⅱ)/Fe(Ⅲ) determination in natural waters, Applied Geochemistry, 15, 6, pp. 785-790, (2000)
[28] Donadel K., Felisberto M.D.V., Favere V.T., Et al., Synthesis and characterization of the iron oxide magnetic particles coated with chitosan biopolymer, Materials Science and Engineering: C, 28, 4, pp. 509-514, (2008)
[29] Manju N.J., Deepesh V., Achuthan C., Et al., Immobilization of nitrifying bacterial consortia on wood particles for bioaugmenting nitrification in shrimp culture systems, Aquaculture, 294, 1-2, pp. 65-75, (2009)
[30] Lertsutthiwong P., Boonpuak D., Pungrasmi W., Et al., Immobilization of nitrite oxidizing bacteria using biopolymeric chitosan media, Journal of Environmental Sciences, 25, 2, pp. 262-267, (2013)

← 1 2 3 4 5 6 →