CAJ | 학술논문

针对传统化学活化法制备污泥吸附剂存在的问题，提出了采用化学干法热解技术制备污泥吸附剂工艺；以氯化锌为活化剂，以碘吸附值为工艺评价指标，采用响应面分析法研究了干法热解技术制备污泥吸附剂的工艺条件，结果表明：在热解时间和热解温度之间存在交互作用，当热解温度增加的时候，热解时间可以适当缩短，获得了污泥吸附剂的最佳制备工艺条件。即：热解温度为389.40℃，热解时间为83.64 min，氯化锌含量为21.40%；进行比较研究后发现，与传统化学活化法相比，化学干法热解技术制备污泥吸附剂的热解温度较低，热解时间较短，在此条件下制备的污泥吸附剂的比表面积增加了20.13%；污泥吸附剂的分析结果表明污泥吸附剂以中孔吸附为主，BJH孔径分布较宽，最高峰在4.2 nm左右，SBET为135.74 m2/g。
침대전통화학활화법제비오니흡부제존재적문제，제출료채용화학간법열해기술제비오니흡부제공예；이록화자위활화제，이전흡부치위공예평개지표，채용향응면분석법연구료간법열해기술제비오니흡부제적공예조건，결과표명：재열해시간화열해온도지간존재교호작용，당열해온도증가적시후，열해시간가이괄당축단，획득료오니흡부제적최가제비공예조건。즉：열해온도위389.40℃，열해시간위83.64 min，록화자함량위21.40%；진행비교연구후발현，여전통화학활화법상비，화학간법열해기술제비오니흡부제적열해온도교저，열해시간교단，재차조건하제비적오니흡부제적비표면적증가료20.13%；오니흡부제적분석결과표명오니흡부제이중공흡부위주，BJH공경분포교관，최고봉재4.2 nm좌우，SBET위135.74 m2/g。
The dry pyrolysis technology was proposed to prepare sludge-derived adsorbent based on existing problems of conventional chemical activation method. With zinc chloride as activator,the iodine value as evaluation index , the dry process was optimized by using response surface methodology,the results showed that there was significant interaction between the pyrolysis time and the pyrolysis temperature , when the pyrolysis temperature increased , the pyrolysis time can be shortened,the optimum technology parameters were obtained as follows:the pyrolysis temperature of 389.40 ℃,the pyrolysis time of 83.64 min and the concentration of zinc chloride of 21.40%(by mass). Comparative studies between conventional chemical activation method and dry pyrolysis method revealed that dry pyrolysis method needs lower pyrolysis temperature and shorter pyrolysis time than conventional chemical activation method. Under the optimum conditions,the surface area of sludge-derived adsorbent increased by 20.13%. The analysis results of sludge-derived adsorbent showed that mesoporous adsorption was dominant,the curve of BJH showed a wider pore size distribution,the peak at about 4.2nm,the BET surface area was 135.74 m2/g.