Sulfate removal effect of molasses alcohol wastewater pretreated by physical and chemical methods and its biogas production performance

doi:10.11975/j.issn.1002-6819.2016.05.036

CORC > 兰州理工大学 > 兰州理工大学

	Sulfate removal effect of molasses alcohol wastewater pretreated by physical and chemical methods and its biogas production performance
	Ren, Shoujun 1,2; Sun, Yongming 2; Kong, Xiaoying 2; Wang, Yao 2; Yuan, Zhenhong 2
刊名	Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
	2016-03-01
卷号	32 期号:5 页码:251-256
关键词	Activated carbon Activated carbon treatment Adsorption Barium sulfate Biogas Chlorine compounds Fermentation Gases Hydrated lime Miniature batteries Sulfur compounds Sulfuric acid Wastewater Wastewater treatment Activated carbon adsorption Anaerobic fermentation Chemical method Cumulative gas productions Experimental groups Gas productions Sulfate radicals Sulfate removal rate
ISSN号	10026819
DOI	10.11975/j.issn.1002-6819.2016.05.036
英文摘要	Molasses alcohol wastewater normarlly contains high quantity of SO42- which can restrain the production of the biogas. In this paper, we used the activated carbon, BaCl22H2O, Ca(OH)2 and iron carbon micro cell to pretreat the molasses alcohol wastewater. Results showed that addition of 8.0 g activated carbon in 500.0 g molasses alcohol wastewater, the sulfate removal rate reached 80% and the gas production was the best which reached 437.3 mL/g. Activated carbon adsorption of sulfate can reach more than 80%, with a small amount of adsorption COD (4 molecules, in the 500 g molasses alcohol wastewater, addition of 70% of BaCl22H2O removed all sulfuric acid. The cumulative gas production rate reached 483.2 mL/g. In the same way, addition of 70% of Ca(OH)2 removed all the sulfuric acid, the cumulative gas production rate reached 436.6 mL/g, which is the relatively best. The removal rate of chemical reagents sulfate can reach 100%, and there was no effect on the COD. But the introduction of new ion could have a potential impact on the anaerobic fermentation. Calcium sulfate is slightly soluble in water, so the removal effects of sulfate is not better than that with BaCl22H2O pretreatment, though low Ca2+ concentrations can accelerate the formation of biofilm. Using the Iron carbon micro cell method to handle the molasses alcohol wastewater can effectively suppress the influence of sulfate and improve the wastewater treatment. For daily gas production rate, gas production cycle was shorter in the experimental group than the control group for 2 to 3 d. The first small peak gas production of molasses alcohol wastewater treated with iron-carbon micro-battery appeared in the first 12 d. The cumulative gas production rate with iron carbon micro cell addition can reach 451.0 mL/g which was 1.5 times of the control group. Iron-carbon micro-cell affected sulfate removal by producing iron sulfide and sulfate-reducing product FeS which precipitated in the wastewater. As such, the addition can improve the wastewater treatment. Although BaCl22H2O could improve sulfur removal and increase gas production in treating molasses alcohol wastewater, its high cost limited its application. The iron-carbon micro battery in the gas production, although slightly lower than BaCl22H2O had a low cost. The treatment effect of gas production performance was: 70% BaCl22H2O> iron carbon micro cell > 8.0 g activated carbon adsorption > 70% Ca (OH)2 > the control group. © 2016, Editorial Department of the Transactions of the Chinese Society of Agricultural Engineering. All right reserved.
语种	中文
出版者	Chinese Society of Agricultural Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112894]
专题	兰州理工大学
作者单位	1.Gansu Key Laboratory of Complementary Energy System of Biomass and Solar Energy, Lanzhou University of Technology, Lanzhou; 730050, China 2.CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou; 510640, China;
推荐引用方式 GB/T 7714	Ren, Shoujun,Sun, Yongming,Kong, Xiaoying,et al. Sulfate removal effect of molasses alcohol wastewater pretreated by physical and chemical methods and its biogas production performance[J]. Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,2016,32(5):251-256.
APA	Ren, Shoujun,Sun, Yongming,Kong, Xiaoying,Wang, Yao,&Yuan, Zhenhong.(2016).Sulfate removal effect of molasses alcohol wastewater pretreated by physical and chemical methods and its biogas production performance.Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering,32(5),251-256.
MLA	Ren, Shoujun,et al."Sulfate removal effect of molasses alcohol wastewater pretreated by physical and chemical methods and its biogas production performance".Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering 32.5(2016):251-256.