scholarly journals PENGARUH JUMLAH CACING TANAH (LUMBRICUS RUBELLUS) DAN WAKTU PENGOMPOSAN TERHADAP C/N RASIO VERMIKOMPOSTING DARI SLUDGE IPAL PT SURABAYA INDUSTRIAL ESTATE RUNGKUT (SIER)

EnviroUS ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 123-128
Author(s):  
Naniek Ratni J.A.R ◽  
Faisal Aziz Faisal
Keyword(s):  
Lumbricus Rubellus ◽  
Industrial Estate

Proses pengolahan limbah PT SIER, menghasilkan buangan sampingan berupa lumpur yang berasal dari proses pengolahan  lumpur aktif. Diperlukan pengolahan tambahan untuk mereduksi bahan organik, salah satunya dengan proses pengomposan dengan metode vermikomposting dengan bantuan cacing tanah (Lumbricus rubellus). Penelitian ini bertujuan untuk mengetahui pengaruh jumlah cacing tanah (Lumbricus rubellus) terhadap C/N Rasio vermikomposting dari sludge IPAL PT. Surabaya Industrial Estate Rungkut (SIER) dan mengetahui pengaruh waktu pengomposan terhadap C/N Rasio vermikomposting dari sludge IPAL PT. Surabaya Industrial Estate Rungkut (SIER). Penelitian ini menggunakan ukuran reaktor dengan tinggi 20cm, jenis cacing tanah (Lumbricus rubellus) dengan panjang 7-10cm, serbuk gergaji kayu sebanyak 1,5kg dan sludge sebanyak 5kg dengan waktu sampling 7 hari, 14 hari, 21 hari, 28 hari, dan 32 hari. Hasil dari penelitian ini didapatkan bahwa pengomposan dengan menggunakan cacing tanah (Lumbricus rubellus) dapat menurunkan kandungan rasio C/N sebesar 14,89 pada reaktor 5 dengan jumlah cacing 30 ekor pada pengomposan hari ke 32 dan penurunan terendah 23,51 pada reaktor 1 dengan jumlah cacing 10 ekor dengan waktu pengomposan 32 hari.

TẠO DÒNG VÀ PHÂN TÍCH TRÌNH TỰ GEN SERINE PROTEASE THỦY PHÂN FIBRIN TỪ GIUN QUẾ (Perionyx excavatus)

2013 ◽  
Vol 75 (6) ◽  
Author(s):  
Trần Quốc Dung ◽  
Đặng Phước Hải
Keyword(s):  
Serine Protease ◽  
Eisenia Fetida ◽  
Lumbricus Rubellus ◽  
Perionyx Excavatus

Lumbrokinase của giun quế (Perionyx excavatus) là một enzyme thủy phân fibrin. Trong nghiên cứu này, cDNA mã hóa gen lumbrokinase được khuếch đại với cặp mồi đặc hiệu được thiết kế dựa vào trình tự gen mã hóa lumbrokinase trên GenBank với mã số DQ234061. Đoạn cDNA có kích thước 726 bp được tạo dòng với vector pCR®2.1. Trình tự nucleotide của cDNA được so sánh với trình tự của gen lumbrokinase của các loài giun đất Eisenia fetida (mã số DQ234061), Lumbricus bimastus (mã số AY187629) và Lumbricus rubellus (mã số U25644) trên GenBank và có độ tương đồng lần lượt là 52,02%; 50,06% và 48,03%. Từ khóa: cDNA, lumbrokinase, giun quế (Perionyx excavatus).

Determination of perfluorooctane sulphonate and perfluorooctanoic acid in seafood and water from Map Ta Phut Industrial Estate area, Thailand

2021 ◽  
pp. 1-16
Author(s):  
Teerapong Lertassavakorn ◽  
Nanthanit Pholphana ◽  
Nuchanart Rangkadilok ◽  
Tawit Suriyo ◽  
Jutamaad Satayavivad
Keyword(s):  
Perfluorooctanoic Acid ◽  
Industrial Estate

Seasonal activity and estivation of lumbricid earthworms in the midlands of Tasmania

Soil Research ◽  
1994 ◽  
Vol 32 (6) ◽  
pp. 1355 ◽  
Author(s):  
RB Garnsey
Keyword(s):  
Soil Moisture ◽  
Adult Development ◽  
Survival Rates ◽  
Soil Surface ◽  
Early Spring ◽  
Lumbricus Rubellus ◽  
Late Winter ◽  
Cocoon Production ◽  
Density And Biomass ◽  
Earthworm Activity

Earthworms have the ability to alleviate many soil degradational problems in Australia. An attempt to optimize this resource requires fundamental understanding of earthworm ecology. This study reports the seasonal changes in earthworm populations in the Midlands of Tasmania (<600 mm rainfall p.a.), and examines, for the first time in Australia, the behaviour and survival rates of aestivating earthworms. Earthworms were sampled from 14 permanent pastures in the Midlands from May 1992 to February 1994. Earthworm activity was significantly correlated with soil moisture; maximum earthworm activity in the surface soil was evident during the wetter months of winter and early spring, followed by aestivation in the surface and subsoils during the drier summer months. The two most abundant earthworm species found in the Midlands were Aporrectodea caliginosa (maximum of 174.8 m-2 or 55.06 g m-2) and A. trapezoides (86 m-2 or 52.03 g m-2), with low numbers of Octolasion cyaneum, Lumbricus rubellus and A. rosea. The phenology of A. caliginosa relating to rainfall contrasted with that of A. trapezoides in this study. A caliginosa was particularly dependent upon rainfall in the Midlands: population density, cocoon production and adult development of A. caliginosa were reduced as rainfall reduced from 600 to 425 mm p.a. In contrast, the density and biomass of A. trapezoides were unaffected by rainfall over the same range: cocoon production and adult development continued regardless of rainfall. The depth of earthworm aestivation during the summers of 1992-94 was similar in each year. Most individuals were in aestivation at a depth of 150-200 mm, regardless of species, soil moisture or texture. Smaller aestivating individuals were located nearer the soil surface, as was shown by an increase in mean mass of aestivating individuals with depth. There was a high mortality associated with summer aestivation of up to 60% for juvenile, and 63% for adult earthworms in 1993 in the Midlands. Cocoons did not survive during the summers of 1992 or 1994, but were recovered in 1993, possibly due to the influence of rainfall during late winter and early spring.

Effects of heavy metals on the litter consumption by the earthworm Lumbricus rubellus in field soils

Pedobiologia ◽  
2006 ◽  
Vol 50 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Peter H.F. Hobbelen ◽  
Josée E. Koolhaas ◽  
Cornelis A.M. van Gestel
Keyword(s):  
Heavy Metals ◽  
Lumbricus Rubellus ◽  
Field Soils ◽  
Litter Consumption ◽  
Earthworm Lumbricus
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