(1. 安徽工業(yè)大學 冶金減排與資源綜合利用教育部重點實驗室，馬鞍山243000；
2. 安徽工業(yè)大學 化學與化工學院，馬鞍山243002)
摘 要: 以含鈦高爐渣(鈦渣)為原料，以KOH和Fe2O3為改性劑，采用高溫焙燒法進行礦物相重構(gòu)，得到一種具有土壤修復功能的緩釋肥料(重構(gòu)鈦渣)。結(jié)果表明：在模擬太陽光照150 min降解污染物的實驗中，重構(gòu)鈦渣在營養(yǎng)元素溶出后對10 mg/L鹽酸四環(huán)素溶液和10 mg/L亞甲基藍溶液的降解效率分別為39.36%和49.84%。在重構(gòu)鈦渣的水溶出實驗中，鉀、鈣、鎂、鋁和硅元素的溶出量分別為642、461.47、382.40、378.58和1165.18 mg/L，其硅溶出量超出國家硅肥標準量542.96 mg/L。植株的游離氨基酸含量由未施肥時的0.62%提高至0.65%，維生素含量由未施肥時的0.10%提高至0.22%。
關鍵字: 緩釋肥料；含鈦高爐渣；原位摻雜；礦物相重構(gòu)；有機污染物
（1. Key Laboratory of Metallurgical Emission Reduction and Comprehensive Utilization of Resources, Ministry of Education, Anhui University of Technology, Ma’anshan 243000, China;
2. College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma’anshan 243002, China）
Abstract:Using titania-containing blast furnace slag (Ti-slag) as raw material and using KOH and Fe2O3 as modifier, a kind of slow-release fertilizer with soil remediation function was obtained by high temperature roasting method via mineral phase reconstruction(refactoring Ti-slag). The results show that during the degradation experiment of organic pollutants after simulated sunlight irradiation for 150 min, the degradation rate of tetracycline hydrochloride solution (10 mg/L) by reconstruction of Ti-slag after leaching nutrient elements is 39.36%, the degradation rate of methylene blue solution (10 mg/L) is 49.84%. During the fertilizer efficiency test, the dissolved amount of potassium, calcium, magnesium, aluminum and silicon in the reconstructed Ti-slag are 642, 461.47, 382.40, 378.58 and 1165.18 mg/L, respectively, and the dissolved amount of silicon exceeds the national standard of silicon fertilizer by 542.96 mg/L. The content of free amino acids in chives increases from 0.62% without fertilization to 0.65% and the vitamin content increases from 0.10% without fertilization to 0.22%.
Key words: slow-release fertilizer; Ti-bearing blast-furnace slag; in situ doping; mineral phase reconstruction; organic pollutant
