[논문]수용액으로부터 질산성질소 제거를 위한 기술

서양곤; 정세영

doi:10.7464/ksct.2017.23.1.001

수용액으로부터 질산성질소 제거를 위한 기술
Separation Technologies for the Removal of Nitrate-Nitrogen from Aqueous Solution 원문보기

청정기술 = Clean technology, v.23 no.1, 2017년, pp.1 - 14

초록
AI-Helper

높은 농도의 질산염을 포함하는 물은 인간의 건강을 위협하고 부영양화의 원인이 되기 때문에 제한 농도 이하로 처리되어야 한다. 그러나 질산염은 수용액에서의 높은 용해도로 인해 응집, 여과 및 침전과 같은 일반적인 처리공정으로는 제거가 거의 불가능하다. 따라서 흡착, 이온교환, 역삼투, 탈질과 전기투석과 같은 다른 기술이 질산염의 효과적인 제거를 위해 요구된다. 이들 각 기술은 비용, 수질 개선 정도, 잔류물 처리와 전처리 요구와 같은 인자의 비중에 따라 장점과 단점과 가능성을 가지고 있다. 흡착은 가격 효율성, 운전의 용이성과 설계의 간편성으로 가장 보편적으로 사용되는 공정이다. 흡착제의 표면개질은 질산이온 흡착능력을 개선하였다. 역전 전기투석과 역삼투의 질산-선택 멤브레인 공정은 수용액 중의 질산이온 제거에 오랜 동안 많은 지역에서 효과적임이 증명되었다. 두 기술은 높은 농도의 폐기물을 생성하고 이것의 신중한 처분이 필요하다.

Abstract ▼ AI-Helper

At high nitrate concentrations, water must be treated to meet regulated concentrations because it results in threat to human health and eutrophication of natural water. However, it is almost impossible to remove nitrate by conventional water treatment methods such as coagulation, filtration and precipitation, due to its high water solubility. Therefore, other technologies including adsorption, ion exchange, reverse osmosis, denitrification, and electrodialysis are required to effectively remove nitrate. Each of these technologies has their own strengths and drawbacks and their feasibility is weighted against factors such as cost, water quality improvement, residuals handling, and pre-treatment requirements. An adsorption technique is the most popular and common process because of its cost effectiveness, ease of operation, and simplicity of design. Surface modifications of adsorbents have been enhanced their adsorption of nitrate. The nitrate-selective membrane process of electrodialysis reversal and reverse osmosis have proven over time and at many locations to be highly effective in removing nitrate contaminating problems in aqueous solutions. Both electrodiaysis and reverse osmosis methods generate highly concentrated wastes and need careful consideration with respect to disposal.

주제어

질의응답

핵심어	질문	논문에서 추출한 답변
	질산염은 무엇인가?	질산염(nitrate)은 식물 성장에 필요한 주요 영양물질이며, 농작물의 생산성 향상을 위해 질소비료에 널리 사용된다. 그러나 질소비료의 과잉 사용과 고도처리되지 않은 하수와 산업폐수의 방류는 필연적으로 지표수 또는 지하수에서 질산염의 농도를 증가시키고, 이로 인해 심각한 환경 문제를 일으키는 원인이 된다.
	녹조 및 적조현상이 미치는 영향은 무엇인가?	즉 질산성 질소(nitrate-nitrogen) 오염물질들은 하천이나 바다로 유입되어 부영양화(eutrophication)를 일으키거나 녹조 및 적조현상의 원인이 된다. 이들은 물고기와 수생 식물을 위협할 뿐만 아니라 수질을 저하시키게 된다[1]. 음용수에 존재하는 고농도의 질산성 질소는 유아기 때 산소전달을 방해하여 청색증(blue-baby syndrome)을 유발하며, 발암물질로 알려진 니트로사민(nitrosamine)이란 화합물을 형성할 수 있는 잠재력을 가지고 있다[2,3].
	고농도의 질산성 질소의 악영향에는 무엇이 있는가?	이들은 물고기와 수생 식물을 위협할 뿐만 아니라 수질을 저하시키게 된다[1]. 음용수에 존재하는 고농도의 질산성 질소는 유아기 때 산소전달을 방해하여 청색증(blue-baby syndrome)을 유발하며, 발암물질로 알려진 니트로사민(nitrosamine)이란 화합물을 형성할 수 있는 잠재력을 가지고 있다[2,3]. 이에 따라 미국 환경청(United States Environmental Protection Agency, USEPA)은 음용수의 질산성 질소 농도기준을 10 mg NO3- - N L-1 (질산이온 기준: 44.

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저자의 다른 논문 :

표제어: PCR

동의어: Packet Collision Rate

용어 설명 출처 목록 (6)

용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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저장형식	Text(ASCII format) Excel format RefWorks Direct Export RIS format (for Reference Manager, ProCite, EndNote), Scholar's Aids, Mendeley
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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