IJE TRANSACTIONS A: Basics Vol. 31, No. 4 (April 2018) 622-628    Article in Press

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T. E. Agustina, I. Rizky, M. E. W. Utama and M. I. Amal
( Received: March 17, 2017 – Accepted in Revised Form: January 04, 2018 )

Abstract    Based on various characteristics of zeolite, its utilization in the manufacture of fertilizers with slow-release properties is possible. The objectives of this study are to characterize and utilized nitrogen, phosphorus and potassium (NPK) slow release fertilizer by using natural zeolite in Indonesia. In this research, zeolite was utilized as a mixture of Slow Release Fertilizer (SRF). Effect of zeolite addition to single/multi-nutrients NPK fertilizer, compacting process, and applied medium on the average rate of fertilizer solubility was investigated. Fertilizer compaction results of NPK, NPK + zeolite, and (N-P-K) + zeolite were characterized by SEM EDS to examine the surface morphology and chemical composition of the fertilizer samples. Nutrients content in soil, domestic water, and demineralized water medium were analyzed by AAS. Base on the experimental results, it was found that addition of zeolite in the single (N-P-K) or multi-nutrients (NPK) fertilizer reduced the average rate of solubility of nutrients in the leaching medium. The results of this study showed that (N-P-K) + zeolite fertilizer has the lowest average rate of solubility than the other samples, it was proved by its average rate of solubility in soil, domestic water, and demineralized water medium, i.e. 9.63 ppm/h, 23.97 ppm/h, and 14.68 ppm/h, respectively.


Keywords    Nitrogen, Phosphorus and Potassium; Slow Release Fertilizer; Total Dissolved Solid; Zeolite


چکیده    بر اساس ویژگیهای متنوع زئولیت، استفاده از آن در تولید کودهایی با خواص رهایش آهسته امکانپذیر است. اهداف این مطالعه توصیف و تولید کود با رهایش آهسته NPK با استفاده از زئولیت طبیعی در اندونزی است. در این تحقیق، زئولیت بعنوان مخلوطی از کود با رهایش آهسته (SRF) مورد استفاده قرار گرفت. اثر افزودن زئولیت بر کود NPK تک یا چند عنصری، فرایند تراکم و محیط کشت بر میانگین میزان حلالیت کود مورد بررسی قرار گرفت. نتایج تراکم کود برای NPK، زئولیت + NPKو زئولیت + (N-P-K) توسط EDS SEM مشخص شد تا ریخت شناسی سطح و ترکیب شیمیایی نمونه های کود مورد بررسی قرار گیرد. محتوای مواد مغذی درخاک، آب شهری و محیط آب کانی زدایی شده بوسیله AAS آنالیز شد. بر اساس نتایج تجربی، مشخص شد که افزودن زئولیت در کود تک عنصری ( (N-P-Kیا چند عنصری ((NPK میزان متوسط حلالیت مواد مغذی را در محیط اشباع کاهش داد. نتایج این مطالعه نشان داد که کود زئولیت + (N-P-K) کمترین میزان متوسط حلالیت را نسبت به نمونه های دیگر دارد که با میزان متوسط حلالیت آن در خاک، آب شهری، محیط آب کانی زدایی شده یعنی بترتیب h/ppm 63/9 ،h / ppm97/23، ppm/h68/14 ثابت شده است.


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