TOPRAKLARIN ANAEROBiK KOŞULLARDAKİ REDOKS POTANSİYELİ ÜZERİNE BİR ARAŞTIRMA

Kemal GÜR; Nazmi ORUÇ

Article Details

TOPRAKLARIN ANAEROBiK KOŞULLARDAKİ REDOKS POTANSİYELİ ÜZERİNE BİR ARAŞTIRMA

Authors:

Kemal GÜR | Nazmi ORUÇ

Publisher:

Ataturk University

Journal:

Atatürk University Journal of Agricultural Faculty 1982 Vol.13 Issue 3-4

Document Type:

Article

Publication Date:

12/2010

Document Language:

Turkish

Document ID (Org No.):

2000690539

Frequency:

Tri-annual

eISSN:

2651-5016

pISSN:

1300-9036

Abstract:

 

ÖZETBu çalr.şma anaerobik koşullarda kum kültürüne ilave edilen organik madde,NO], Mn02 ve FeıO J gibi bileşiklerin sistemin redoks potansiyeline etki durumunuııe ayflra bazı örneklerin pH değeri, Fe++, Mn-;-'~ konsatrasyonlanna göre hesaplananve ölçülen redaks potansiyeliller; arasındaki ilişkileri araştırmak amacıile yapılmıştır. Lahoratouvarda yürütüle~ bu çalışmada, deneme başında ve 35 günsonra dokuz örnekte pH ve Eh değerlerl ölçülmüştür. Deneme sonunda ayrıca topoiraklarda ve Fe203 ilave edilmiş örnekte fe++, mangan dioksit ilave edilmiş örnekteise Mn+ 1- tayinleri yapılmıştır. Deneme ~aşmda 4.18 ile 7.00 arasında değişen pHdeğerleri arasında deneme sonunda (5 örryekte azalma, 4 örnekte artış) 5.05 ile (i.58arasında, deneme başında 0.265 yolı ile O~470 volt arasında değişen redaks potansiyeNeri(tüm örneklerde azalma) ise deneme Sonunda 0.020 Volt ile 0.400 Volt arasmda bulunmuş/ur. Kum + su, kum -+ .~u + kuru ot, kum + KNO 3 kuru or, .kum-:- su MnO 2 +kuru ot ve kum + su + JieıO 3 + kuru ot ilave edilen 5farklı kumkültüründe deneme sonunda ölçülen Eh deterleri sırasıyla 0.400, 0.260, 0.220, 0.180ve 0,175 Volt olarak tesbit edilmiştir. Elde edileıı bu değerler literaıiirde bu konuda.verilen sınırların içerisindedir.SUMMARYA STUDY ON REDOX POTENTlAL OF THE SOIL SAMPLES UNDERANAEROBIC CONDITIONSlihe objective of this study was· to determine the effects of the additions ofdried grass, KNO3, MnO2' and Fe 20 3 on the oxidation-reduction patentiols ofthe sand culture kept under submerged eonditions for 35 days. Four soil samples120were also included in the study. Eh and pH values ot' the five sand eultures andfOUf soil samples were determined in the begiııing, and at the eııd of the 35 daysof submergence. In addition to the determination of FeF contents of thesoil samples, Fe++ and Mn-! + analysis were also made on the sand cutures which,received Fe203 and Mn02'In the begining of the experiment pH and Eh values of the nine samplesvaried from 4.18 ,to 7.00 and, from 0.265 to 0.470 Volts resp~ctively. At the end ofthe experiment pH values was found between 4.05 and 6.58, while five samples \.showed slight decreases and fOUf samples showed Increases. All of the samples,showed decreases in Eh values, and at the end of experiment they changed from0.20 to 0.500 Volts. Sand -I-water, Sand-water, sand+water-dried grass, sand·!...KN03 solution + dried grass, sand +- water -1 Nn02 -i- dried grass, and sand+water + Fe 20 3 -:-- dried grass samples h<!d Eh vel~es, as 0.500, 0.260, 0.2000.180 and 0.175 volts, 'respcctiveHy. The observed Ehvalue was much lower thanthe calculated Eh value, developed for pure Mn02+ Mn-+ systems. In some ofthe samples observed 'redox potentials determined with platinum electrode were'found to be different than the Eh values cakulated according to. equations developedfor the pure iron (III) and irom. (Il) hydroxictessystems.

Article Details

TOPRAKLARIN ANAEROBiK KOŞULLARDAKİ REDOKS POTANSİYELİ ÜZERİNE BİR ARAŞTIRMA

Authors: Kemal GÜR | Nazmi ORUÇ

Publisher: Ataturk University

Journal: Atatürk University Journal of Agricultural Faculty 1982 Vol.13 Issue 3-4

Document Type: Article

Publication Date: 12/2010

Document Language: Turkish

Document ID (Org No.): 2000690539

Frequency: Tri-annual

eISSN: 2651-5016

pISSN: 1300-9036

Issues

Authors:

Kemal GÜR | Nazmi ORUÇ

Publisher:

Ataturk University

Journal:

Atatürk University Journal of Agricultural Faculty 1982 Vol.13 Issue 3-4

Document Type:

Article

Publication Date:

12/2010

Document Language:

Turkish

Document ID (Org No.):

2000690539

Frequency:

Tri-annual

eISSN:

2651-5016

pISSN:

1300-9036