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KH?O ST HI?N TR?NG V TI?M N?NG ?NG D?NG H?M ? BIOGAS ? M?T S? X THU?C T?NH TI?N GIANG

T?p ch Khoa h?c Tr??ng ??i h?c C?n Th? s? 28 (2013): 80-85 Tc gi?: ?o Mai Trc Qu?nh, Nguy?n V Chu Ngn, Jan B...

Factors Influencing the Adoption of small-scale biogas digesters in developing countries - Empirical

The use of small-scale biogas digesters among farmers and households in rural areas of developing co...

?ng d?ng m hnh ti ? HDPE c?i ti?n v?i nguyn li?u n?p r?m v l?c bnh

Vi?c ?ng d?ng m hnh kh sinh h?c trong x? l ch?t th?i ch?n nui ?? cung c?p n?ng l??ng ? ???c p d?ng kh ph? bi?...

Cc xu?t b?n trong n?m 2016 - 2017

STT Tn bi bo Abstract -E Abstract -VN 1 Ngo Thi Thanh Truc, Tran...

S?n xu?t biogas t? thn b?p - ?nh h??ng c?a kch c?

Study on size effects of corn stalks for biogas production was evaluated for three differe...

  • KH?O ST HI?N TR?NG V TI?M N?NG ?NG D?NG H?M ? BIOGAS ? M?T S? X THU?C T?NH TI?N GIANG

  • Factors Influencing the Adoption of small-scale biogas digesters in developing countries - Empirical

  • ?ng d?ng m hnh ti ? HDPE c?i ti?n v?i nguyn li?u n?p r?m v l?c bnh

  • Cc xu?t b?n trong n?m 2016 - 2017

  • S?n xu?t biogas t? thn b?p - ?nh h??ng c?a kch c?

Hnh ?nh Tiu Bi?u

 
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poster chi - eng
poster hong - eng

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a. Tr??ng h?p v?n hnh hon ton b?ng phn heo

S?n l??ng kh sinh h?c n?p vo ti ? ???c tnh ton d?a trn hm l??ng ch?t r?n bay h?i, v?i l??ng nguyn li?u n?p cho h?m ? khng c gi bm dao ??ng t? 1 4 kg VS.m-3.ngy-1 (Eder and Schulz, 2007). Phn heo t??i c hm l??ng TS v VS l?n l??t l 65,3 v 54,6% (Tr?n S? Nam et al., 2015), t??ng ?ng 1 kg phn heo t??i c hm l??ng VS l 0,3 kg. V?i th? tch c?a ti ? HDPE c?i ti?n l 6,8 m3, l??ng n?p VS c th? ti?p nh?n c?a ti t?i ?a l 91 kg phn/ngy (kho?ng 40 ??u heo). V?i l??ng VS n?p l 1 kg VS.m-3.ngy-1, th?i gian l?u ch?t th?i trong h? th?ng 30 ngy, n?ng su?t sinh kh c?a phn heo l 254 lt/kgVSn?p (Tr?n S? Nam et al., 2015).

Theo Rajendran et al. (2012) nhu c?u s? d?ng kh sinh h?c cho m?i nng h? trong ngy dao ??ng t? 1 1,5 m3. T??ng ?ng, c?n l??ng phn heo t??i cho ti ? t? 13 20 kg/ngy, t??ng ???ng 5 8 ??u heo (v?i l??ng th?i trung bnh 2,5kg phn/ngy cho heo t? 45 100 kg).

b. Tr??ng h?p v?n hnh hon ton b?ng r?m v l?c bnh

R?m v l?c bnh l nguyn li?u kh phn h?y sinh h?c so v?i phn heo nn l??ng nguyn li?u n?p ??i v?i ??i v?i ch?t th?i r?n ???c ?? ngh? trong kho?ng t? 0,64 1,6 kg VS.m-3.ngy-1 (Appels et al., 2008). Nn ch?n l??ng nguyn li?u n?p cho ti ? l 1 kg VS.m-3.ngy-1, l??ng nguyn li?u n?p qu cao s? d?n ??n s? tch l?y cc a-xt v gy ?c ch? s? ho?t ??ng c?a vi sinh v?t, l??ng n?p qu th?p s?n l??ng kh sinh ra t, khng ?p ?ng ???c nhu c?u s? d?ng n?ng l??ng c?a nng h?.

N?p 100% nguyn li?u n?p r?m c n?ng su?t sinh kh 195 lt/kgVSn?p (Tr?n S? Nam et al., 2015). R?m c hm l??ng TS v VS l?n l??t l 87,7% va 83,7%, t??ng ?ng 1 kg r?m kh khng kh c 0,72 kg VS. V?i th? tch ti ? l 6,8 m3 l??ng VS b? sung vo ti ? l 6,8 kgVS/ngy, t??ng ?ng v?i l??ng r?m b? sung cho ti ? l 9,4 kg/ngy, s?n l??ng kh sinh ra dao ??ng t? 1,3 m3/ngy. ?? ??m b?o nhu c?u s? d?ng cho nng h? t? 1,0 1,5 m3 th l??ng r?m c?n b? sung hng ngy cho ti ? dao ??ng t? 7,7 10,7 kg r?m/ngy.

N?p 100% nguyn li?u n?p l?c bnh c n?ng su?t sinh kh 353 lt/kgVSn?p (Tr?n S? Nam et al., 2015). L?c bnh c hm l??ng TS v VS/TS l?n l??t l 5,5% va 81,2%, t??ng ?ng 1 kg l?c bnh t??i c 44,7 gVS. V?i th? tch ti ? l 6,8 m3 l??ng VS b? sung vo ti ? l 6,8 kgVS/ngy, t??ng ?ng v?i l??ng l?c bnh t??i b? sung cho ti ? l 152 kg/ngy, s?n l??ng kh sinh ra dao ??ng t? 2,4 m3/ngy. ?? ??m b?o nhu c?u s? d?ng cho nng h? t? 1,0 1,5 m3 th l??ng l?c bnh c?n b? sung hng ngy cho ti ? dao ??ng t? 60 90 kg l?c bnh/ngy.

c. Tr??ng h?p v?n hnh v?i h?n h?p nguyn li?u n?p

S?n l??ng v thnh ph?n kh sinh h?c sinh ra ph? thu?c vo t?ng t? l? ph?i tr?n nguyn li?u r?m v?i phn heo. ?? duy tr s?n l??ng kh sinh h?c c?n thi?t cho s? d?ng th c?n n?p b? sung r?m ho?c l?c bnh v?i phn heo v?i t? l? t? 20 80% v?i s? l??ng heo t? 1 5 con theo B?ng 8.6 l??ng heo cng t th l??ng r?m/l?c bnh c?n b? sung cho m?i ti ? t?ng ln v ng??c l?i.