Removal of hexavalent chromium from electroplating wastewater by ammoniated distilled grain-based adsorbent
-
摘要: 以酿酒过程中产生的酒糟为原料,制备得到氨化酒糟吸附剂,用于去除电镀废水中的六价铬〔Cr(Ⅵ)〕,利用FTIR、EDS、BET和SEM等对吸附剂组成和结构进行分析和表征,在不同的pH及吸附剂投加量条件下研究其对Cr(Ⅵ)吸附性能的影响。结果表明:氨化酒糟吸附剂表面引入了大量的氨基,氮元素占比达到4.40%,其比表面积增至25.67 m 2/g;当平衡pH为2.7时,Cr(Ⅵ)的饱和吸附量达到150.45 mg/g,平均吸附速率达到1 791.90 mg/(g·h);经过5次再生循环后,氨化酒糟吸附剂对Cr(Ⅵ)的吸附量达到98.44 mg/g,吸附性能损失率仅为19.60%。Abstract: To remove hexavalent chromium (Cr(Ⅵ)) from electroplating wastewater, the ammoniated distilled grain-based adsorbent was prepared using the fermentation residue as the raw material by means of ammonia modification. The composition and structure of the adsorbent was analyzed and characterized by FTIR, EDS, BET and SEM, and its effect on Cr(Ⅵ) adsorption was studied under different pH and adsorbent dosage. The results showed that the amounts of amino groups were introduced into the surface of the ammoniated distilled grain-based adsorbent, and the contents of nitrogen element reached 4.40%. At equilibrium pH is 2.7, the saturated adsorption capacity of Cr(Ⅵ) reached maximum value 150.45 mg/g, and the average adsorption rate reached 1 791.90 mg/(g·h). In addition, the regeneration performance of the adsorbent was evaluated. After five regeneration cycles, the adsorption performance of the adsorbent to Cr(Ⅵ) reached 98.44 mg/g, and the adsorption performance loss rate was 19.60%.
-
Key words:
- distilled grain /
- adsorbent /
- electroplating wastewater /
- hexavalent chromium
-
[1] MA H F, YANG J J, GAO X , et al. Removal of chromium(Ⅵ) from water by porous carbon derived from corn straw:influencing factors,regeneration and mechanism[J]. Journal of Hazardous Materials, 2019,369:550-560. [2] NAG S, MONDAL A, BAR N , et al. Biosorption of chromium(Ⅵ) from aqueous solutions and ANN modelling[J]. Environmental Science and Pollution Research, 2017,24(23):18817-18835. [3] 田渭花, 王蕾, 关建玲 , 等. 渭河陕西段水体重金属污染现状及其来源探析[J]. 环境工程技术学报, 2017,7(6):684-690.TIAN W H, WANG L, GUAN J L , et al. Heavy metal pollution and source analysis of Weihe River in Shaanxi Province[J]. Journal of Environmental Engineering Technology, 2017,7(6):684-690. [4] AUGUSTYNOWICZ J, LEKKA M B, WROBEL P M . Mechanical properties of callitriche cophocarpa leaves under Cr(Ⅵ)/Cr(Ⅲ) influence[J]. Acta Physiologiae Plantarum, 2014,36(8):2025-2032. [5] SHAKER M A, ALBISHIR H M . Dynamics and thermodynamics of toxic metals adsorption onto soil-extracted humic acid[J]. Chemosphere, 2014,111:587-595. [6] 陈志良, 周建民, 蒋晓璐 , 等. 典型电镀污染场地重金属污染特征与环境风险评价[J]. 环境工程技术学报, 2014,4(1):80-85.CHEN Z L, ZHOU J M, JIANG X L , et al. Pollution characteristics and environmental risk assessment of heavy metals in typical electroplating contaminated site[J]. Journal of Environmental Engineering Technology, 2014,4(1):80-85. [7] YAO X L, DENG S B, WU R , et al. Highly efficient removal of hexavalent chromium from electroplating wastewater using aminated wheat straw[J]. Rsc Advances, 2016,6(11):8797-8805. [8] ARAVINDHAN R, MAHARSHI B, SREERAM K J , et al. Biosorption of cadmium metal ion from simulated wastewaters using hypnea valentiae biomass:a kinetic and thermodynamic study[J]. Bioresource Technology, 2010,101(5):1466-1470. [9] HEMAVATHY R R V, KUMAR P S, SUGANYA S , et al. Modelling on the removal of toxic metal ions from aquatic system by different surface modified Cassia fistula seeds[J]. Bioresource Technology, 2019,281:1-9. [10] VIDHYA L, DHANDAPANI M, SHANTHI K , et al. Removal of Cr(Ⅵ) from aqueous solution using coir pith biochar:an eco-friendly approach[J]. Indian Journal of Chemical Technology, 2018,25(3):266-273. [11] RENU, M A, SINGH K . Heavy metal removal from wastewater using various adsorbents:a review[J]. Journal of Water Reuse and Desalination, 2017,7(4):387-419. [12] PANDA M, BHOWAL A, DATTA S . Removal of hexavalent chromium by biosorption process in rotating packed bed[J]. Environmental Science & Technology, 2011,45(19):8460-8466. [13] WAND X J, ULLAH N, SUN X C , et al. Development and characterization of bacterial cellulose reinforced biocomposite films based on protein from buckwheat distiller’s dried grains[J]. International Journal of Biological Macromolecules, 2017,96:353-360. [14] ZUO S C, YANG H Q, ZOU W . Recent progress on the utilization of distiller’s grains:a review[J]. Food Industry, 2016,37(1):246-249. [15] BRUNAUER S, EMMETT P H, TELLER E . Adsorption of gases in multimolecular layers[J]. Journal of the American Chemical Society, 1938,60(2):11. [16] REN J, LI N, ZHAO L . Adsorptive removal of Cr(Ⅵ)from water by anion exchanger based nanosized ferric oxyhydroxide hybrid adsorbent[J]. Chemical and Biochemical Engineering Quarterly, 2012,26(2):111-118. [17] KABEL M A, BOS G, ZEEVALKING J , et al. Effect of pretreatment severity on xylan solubility and enzymatic breakdown of the remaining cellulose from wheat straw[J]. Bioresource Technology, 2007,98(10):2034-2042. [18] GREEN J W, CARD R J, COFFEY R , et al. Committee report summary:selection and installation of buried stainless-steel pipe[J]. Journal American Water Works Association, 2012,104(2):56-60. [19] YACKEL E C, KENYON W O . The oxidation of cellulose by nitrogen dioxide[J]. Journal of the American Chemical Society, 1942,64:121-127. [20] ORLANDO U S, BAES A U, NISHIJIMA W , et al. Preparation of agricultural residue anion exchangers and its nitrate maximum adsorption capacity[J]. Chemosphere, 2002,48(10):1041-1046. [21] CABATINGAN L K, AGAPAY R C, RAKELS J L L ,et al.Potential of biosorption for the recovery of chromate in industrial wastewaters[J]. Industrial & Engineering Chemistry Research, 2001,40(10):2302-2309.
点击查看大图
计量
- 文章访问数: 402
- HTML全文浏览量: 140
- PDF下载量: 114
- 被引次数: 0