以从造纸黑液中提取的麦草碱木质素为原料,通过曼尼希反应合成麦草碱木质素三甲基季铵盐,以脱色率为指标检测其对酸性黑ATT、酸性橙GG和酸性红B的絮凝性能。实验结果表明:对于0.1 g/l酸性黑ATT溶液,pH为2,麦草碱木质素三甲基季铵盐使用浓度在0～3 500 mg/l范围内时,脱色率随浓度增大而升高;麦草碱木质素三甲基季铵盐使用浓度为2 884 mg/l时,在pH为1～4范围内,脱色率随pH降低而增加。酸性橙GG和酸性红B也有类似的规律。由上述结论结合麦草碱木质素三甲基季铵盐和酸性染料的结构特点,认为絮凝过程先是麦草碱木质素三甲基季铵盐中的铵离子与酸性染料中的磺酸根之间氢键吸引,然后染料间产生"架桥"现象,具有三维网状结构的碱木质素分子继续网捕和卷扫脱除染料。

The trimethyl quaternary ammonium salt of wheat-alkali-lignin was synthesized in the Mannich reaction using wheat straw alkali lignin as raw material which is extracted from black liquo of paper and pulp industry. The decolorization rate of the trimethy quaternary ammonium salt of wheat-alkali-lignin was detected by Acid Black ATr dye, Acid red B, and Orange G in aqueous solu- tion to evaluate flocculation function. The results showed that decolorization rate of 0. 15g/L Acid Black ATY dye with pH values of 2 in aqueous solution increased with increasing concentration of the trimethyl quaternary ammonium salt of wheat-alkali-lignin between 0 -3500 mg/L; the decolorization rate of 0. 15g/L Acid Black ATr dye increased with decreasing pH value between 1 -4 when the concentration is 2884 mg/L. There were similar results for Orange GG and Acid Red B dye. According to the above conclusions and the structure of the trimethyl quaternary ammonium salt of wheat-alkali-lignin and the acid dye, t

酸性媒介染料黑PV用低温促染剂在90℃进行染色,后媒染阶段加入除铬剂;与常规沸染工艺相比,降低了羊毛损伤,提高得色率和色牢度,同时降低了废水中铬离子含量。

With the low temperature promoter , acid mordant dye black PV dyed in 90℃and chrome-re-moval agent was added in the latter mordanting step .Compared with traditional boiled dyeing technique , this technique lowered the wool damage , enhanced the color rate and color fastness and reduced the chromium ion content in the waste water .

以环氧氯丙烷、二乙醇胺、己二胺(作为交联剂)为原料,制备高分子阳离子絮凝剂.研究了原料物质的量比、反应时间和反应温度对酸性黑染料脱色率的影响.利用红外光谱对絮凝剂聚合物的结构进行了表征分析,并将其应用于酸性黑染料絮凝处理.在染料质量浓度100 mg/L下,考察絮凝剂投加量、染液pH和静置时间对脱色效果的影响,确定了最佳脱色工艺：絮凝剂投加量为350 mg/L,染液废水pH为6~7,静置时间为25 min.在此条件下,脱色率达到95.1%.与市场上的聚丙烯酰胺和聚合氯化铝絮凝剂进行比较,在相同条件下,高分子阳离子絮凝剂的脱色率和COD去除率有显著的提高.

Cationic polymer flocculant was synthesized using epichlorohydrin, diethanolamine and cross?linking agent hexamethylendiamine as materials. The effects of molar ratio, reaction time and temperature on decolorization rate of acid black dye were discussed. Meanwhile, the structure of polymer flocculant was char?acterized by FT- IR, and the flocculant was used for treatment of acid black dye flocculation. Under 100 mg/L of dye mass concentration, the effect of flocculant dosing amount, pH of dyeing wastewater and standing time on decoloration of dye were studied. The optimal decoloration process was determined: the dosage of flocculant was 350 mg/L, pH was control ed at 6~7, and maintaining the standing time for 25 min. The rate of decoloration could reach 95.1%. Compared with polyacrylamide and poly aluminium chloride flocculant on the market, under the same conditions, the decolorization rate and COD removal efficiency of cationic polymer floc?culant increased notably.

本文采用回流法制备酸性水钠锰矿,利用该材料对甲基橙(MO)染料模拟废水进行降解处理。分别采用X射线衍射(XRD)、电感耦合等离子体光谱仪(ICP-AES)和BET氮气吸附法对合成酸性水钠锰矿的晶体结构、化学组成以及比表面积进行了表征。分别考察了pH值、锰氧化物质量浓度、染料质量浓度及温度对MO去除的影响规律。研究结果表明,低pH时酸性水钠锰矿对甲基橙的去除效果显著;矿物浓度升高及染料浓度降低都可以促进甲基橙的降解,但反应温度升高不利于甲基橙的降解。

Acidic birnessite was prpared , and applied in degradation of methyl orange ( MO ) .The struc-ture,composition and surface area were studied in detail by using XRD ( X-ray diffraction) ,ICP-AES ( in-ductively coupled plasma-atomic emission spectroscopy ) , and N2 physisorption at 77 K.The effects of pH , concentration of Bir-H, concentration of MO and reaction temperature on degradation rate of MO were ex-plored.The results revealed that low pH ,high concentration of Bir-H and low concentration of MO increased the degradation rate of MO ,but the higher reaction temperature decreased the degradation rate of MO .

该文使用了介质阻挡放电低温等离子体对蒽醌染料废水进行脱色,采用酸性艳蓝和酸性紫红作为研究对象,探讨放电功率、电介质间距、放电时间、浓度和p H等因素对脱色性能的影响。结果表明当染料初始浓度为100 mg/L、放电功率为4 k W/L、电介质间距为6 mm时,放电9 min可使蒽醌染料获得98%以上的脱色率。在工程应用中一般要求脱色率达90%左右,此前提下理论能耗为19 k J左右。

Dielectric barrier discharge low temperature plasma was used to decolorize anthraquinone dyes wastewater in this paper. The acid blue and acid amaranthine were used to represent anthraquinone dyes effluent discoloring performance. Factors such as discharge power,air gaps,discharge time,concentration,and pH value were studied. The results show that when solution concentration is 100 mg/L,discharge power is 4 kW/L,air gaps is 6 mm,decolonization rate of anthraquinone dye wastewater is more than 98% after 9 min. Engineering applications generally requiring decolorization rate of 90%,theoretical energy consumption is about 19 kJ.