摘要
目的研究太西煤做为吸附剂用于苯酚废水的处理。方法采用吸附法处理50.0 ml浓度为100 mg/L的模拟苯酚废水,分别考察了太西煤吸附剂的制备方式[破碎处理、球磨处理及化学处理(丙酮、30%双氧水、65%浓硝酸)]、灰分(6%~20%)、粒度(60~200目)及实验条件[搅拌时间(30~360 h)、太西煤吸附剂用量(0.5~5 g)、p H值(1~10)、温度(25~60℃)、苯酚浓度(50~250 mg/L)]对废水中苯酚的去除效果。结果在室温下处理时间180 min,太西煤粉末(10%灰分,粒度为200目)用量3 g,p H为2~8时,对废水中苯酚的去除率达到97%以上。结论太西煤经过球磨机加工成粉末后具有良好的去除苯酚的能力,成本低,后续处理简单,可做为工业苯酚废水的去除剂。
Objective To explore the removal of phenol in wastewater with Taixi coal adsorbent. Methods The experiment was performed in 50.0 ml simulated wastewater sample with 100 mg/L phenol,the properity of Taixi coal adsorbent and the reaction factors, such as preparation way [crushing processing, ball mill and chemical processing(acetone, 30% hydrogen peroxide solution, 30% nitric acid)], ash(6%-20%), particle size(60-200 mesh), stirring time(30-360 h), dosage(0.5-5 g), p H(1-10),temperature(25-60 ℃), concentration of phenol(50-250 mg/L), were researched. Results Under the condition,such as 180min-treatment at room temperature,10% ash and 200 mesh Taixi coal powder dosage for 3.0 g and p H 2-8, removal rate could reach more than 97%. Conclusion Taixi coal after ball mill processing has good ability to remove phenol, which presents low cost and easy subsequent processing, suitable for treatment of industrial phenolic wastewater.
引文
[1]Morimoto K,Wolff S.Increase of sister chromatic exchanges and perturbations of cell division kinetics in human lymphocytes by benzene metabolites[J].Cancer Res,1980,40:140-189.
[2]奚旦立,孙裕生.环境监测[M].3版.北京:高等教育出版社,l994:572-574.
[3]Agarry SE,Durojaiye AO,Solomon BO.Microbial degradation of phenols:a review[J].Int J Environ Pollut,2008,32:12-28.
[4]Li XY,Cui YH,Feng YJ,et al.Reaction pathways and mechanisms of the electrochemical degradation of phenol on different electrodes[J].Water Res,2005,39:1972-1981.
[5]杨岳主,李玉平,杨道武.铁铜催化剂非均相Fenton降解苯酚及机制研究[J].环境科学,2013,34(7):2658-2664.
[6]方嘉声,于光认,陈晓春,等.墨烯掺杂分子筛负载氧化铁芬顿催化降解苯酚影响因素的研究[J].环境科学学报,2015,35(11):3529-3536.
[7]吕江维,冯玉杰,曲有鹏,等.BDD电极电催化降解苯酚废水的研究[J].水处理技术,2013,39(10):53-58.
[8]陆纳新,袁君,高乃云,等.臭氧-生物活性炭联用工艺去除苯酚的影响因素研究[J].净水技术,2014,33(2):105-108.
[9]吴云海,杨凤,吴云影.生物颗粒活性炭处理苯酚废水[J].水资源保护,2008,24(4):67-69.
[10]李哲,王百年.改性硅藻土对苯酚废水的吸附性能研究[J].无机盐工业,2015,47(12):56-59.
[11]李媚,唐梅,王克之,等.颗粒活性炭吸附苯酚模拟废水的热力学和动力学研究[J].食品科技,2013,38(1):126-131.
[12]刘咏,李妍,赵仕林,等.锰-稀土/Y分子筛复合电催化处理含酚模拟废水[J].中国环境科学2011,31(5):740-747.
[13]王秀兰,徐岩,任瑞晨.粉煤灰合成沸石基吸附剂的应用研究[J].硅酸盐通报,2012,31(3):679-682.
[14]王亚民.太西煤开采现状和资源保护的探讨[J].煤炭加工与综合利用,1988,19(4):13-16.